From patchwork Thu Nov 3 03:51:30 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Guangrong X-Patchwork-Id: 9410137 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 53B8D60573 for ; Thu, 3 Nov 2016 04:06:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 094A92A7C8 for ; Thu, 3 Nov 2016 04:06:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F0F272A7CA; Thu, 3 Nov 2016 04:06:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 617F52A7C8 for ; Thu, 3 Nov 2016 04:06:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751496AbcKCEGv (ORCPT ); Thu, 3 Nov 2016 00:06:51 -0400 Received: from mga02.intel.com ([134.134.136.20]:46248 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751088AbcKCEGt (ORCPT ); Thu, 3 Nov 2016 00:06:49 -0400 Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga101.jf.intel.com with ESMTP; 02 Nov 2016 21:06:48 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,585,1473145200"; d="scan'208";a="26805932" Received: from xiaoreal1.sh.intel.com (HELO xiaoreal1.sh.intel.com.sh.intel.com) ([10.239.48.133]) by fmsmga006.fm.intel.com with ESMTP; 02 Nov 2016 21:06:46 -0700 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 v4 3/3] pc: memhp: enable nvdimm device hotplug Date: Thu, 3 Nov 2016 11:51:30 +0800 Message-Id: <1478145090-11987-4-git-send-email-guangrong.xiao@linux.intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1478145090-11987-1-git-send-email-guangrong.xiao@linux.intel.com> References: <1478145090-11987-1-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-Virus-Scanned: ClamAV using ClamSMTP _GPE.E04 is dedicated for nvdimm device hotplug Signed-off-by: Xiao Guangrong --- default-configs/mips-softmmu-common.mak | 1 + docs/specs/acpi_nvdimm.txt | 5 +++++ hw/acpi/ich9.c | 8 ++++++-- hw/acpi/nvdimm.c | 7 +++++++ hw/acpi/piix4.c | 7 ++++++- hw/i386/acpi-build.c | 7 +++++++ hw/i386/pc.c | 12 ++++++++++++ hw/mem/nvdimm.c | 4 ---- include/hw/acpi/acpi_dev_interface.h | 1 + include/hw/mem/nvdimm.h | 1 + 10 files changed, 46 insertions(+), 7 deletions(-) diff --git a/default-configs/mips-softmmu-common.mak b/default-configs/mips-softmmu-common.mak index 0394514..f0676f5 100644 --- a/default-configs/mips-softmmu-common.mak +++ b/default-configs/mips-softmmu-common.mak @@ -17,6 +17,7 @@ CONFIG_FDC=y CONFIG_ACPI=y CONFIG_ACPI_X86=y CONFIG_ACPI_MEMORY_HOTPLUG=y +CONFIG_ACPI_NVDIMM=y CONFIG_ACPI_CPU_HOTPLUG=y CONFIG_APM=y CONFIG_I8257=y diff --git a/docs/specs/acpi_nvdimm.txt b/docs/specs/acpi_nvdimm.txt index 364e832..7887e57 100644 --- a/docs/specs/acpi_nvdimm.txt +++ b/docs/specs/acpi_nvdimm.txt @@ -137,6 +137,11 @@ _DSM process diagram: | result from the page | | | +--------------------------+ +--------------+ +NVDIMM hotplug +-------------- +ACPI BIOS GPE.4 handler is dedicated for notifying OS about nvdimm device +hot-add and hot-remove events. + QEMU internal use only _DSM function ------------------------------------ There is the function introduced by QEMU and only used by QEMU internal. diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c index e5a3c18..830c475 100644 --- a/hw/acpi/ich9.c +++ b/hw/acpi/ich9.c @@ -490,8 +490,12 @@ void ich9_pm_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, if (lpc->pm.acpi_memory_hotplug.is_enabled && object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { - acpi_memory_plug_cb(hotplug_dev, &lpc->pm.acpi_memory_hotplug, - dev, errp); + if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) { + nvdimm_acpi_plug_cb(hotplug_dev, dev); + } else { + acpi_memory_plug_cb(hotplug_dev, &lpc->pm.acpi_memory_hotplug, + dev, errp); + } } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { if (lpc->pm.cpu_hotplug_legacy) { legacy_acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.gpe_cpu, dev, errp); diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c index 593ac0d..b8548cc 100644 --- a/hw/acpi/nvdimm.c +++ b/hw/acpi/nvdimm.c @@ -874,6 +874,13 @@ static const MemoryRegionOps nvdimm_dsm_ops = { }, }; +void nvdimm_acpi_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev) +{ + if (dev->hotplugged) { + acpi_send_event(DEVICE(hotplug_dev), ACPI_NVDIMM_HOTPLUG_STATUS); + } +} + void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io, FWCfgState *fw_cfg, Object *owner) { diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c index 2adc246..17d36bd 100644 --- a/hw/acpi/piix4.c +++ b/hw/acpi/piix4.c @@ -378,7 +378,12 @@ static void piix4_device_plug_cb(HotplugHandler *hotplug_dev, if (s->acpi_memory_hotplug.is_enabled && object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { - acpi_memory_plug_cb(hotplug_dev, &s->acpi_memory_hotplug, dev, errp); + if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) { + nvdimm_acpi_plug_cb(hotplug_dev, dev); + } else { + acpi_memory_plug_cb(hotplug_dev, &s->acpi_memory_hotplug, + dev, errp); + } } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { acpi_pcihp_device_plug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev, errp); } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index bc49958..32270c3 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -2039,6 +2039,13 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, method = aml_method("_E03", 0, AML_NOTSERIALIZED); aml_append(method, aml_call0(MEMORY_HOTPLUG_HANDLER_PATH)); aml_append(scope, method); + + if (pcms->acpi_nvdimm_state.is_enabled) { + method = aml_method("_E04", 0, AML_NOTSERIALIZED); + aml_append(method, aml_notify(aml_name("\\_SB.NVDR"), + aml_int(0x80))); + aml_append(scope, method); + } } aml_append(dsdt, scope); diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 77ca7f4..0403452 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1723,6 +1723,12 @@ static void pc_dimm_unplug_request(HotplugHandler *hotplug_dev, goto out; } + if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) { + error_setg(&local_err, + "nvdimm device hot unplug is not supported yet."); + goto out; + } + hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); hhc->unplug_request(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); @@ -1740,6 +1746,12 @@ static void pc_dimm_unplug(HotplugHandler *hotplug_dev, HotplugHandlerClass *hhc; Error *local_err = NULL; + if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) { + error_setg(&local_err, + "nvdimm device hot unplug is not supported yet."); + goto out; + } + hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); hhc->unplug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); diff --git a/hw/mem/nvdimm.c b/hw/mem/nvdimm.c index 7895805..db896b0 100644 --- a/hw/mem/nvdimm.c +++ b/hw/mem/nvdimm.c @@ -148,13 +148,9 @@ static MemoryRegion *nvdimm_get_vmstate_memory_region(PCDIMMDevice *dimm) static void nvdimm_class_init(ObjectClass *oc, void *data) { - DeviceClass *dc = DEVICE_CLASS(oc); PCDIMMDeviceClass *ddc = PC_DIMM_CLASS(oc); NVDIMMClass *nvc = NVDIMM_CLASS(oc); - /* nvdimm hotplug has not been supported yet. */ - dc->hotpluggable = false; - ddc->realize = nvdimm_realize; ddc->get_memory_region = nvdimm_get_memory_region; ddc->get_vmstate_memory_region = nvdimm_get_vmstate_memory_region; diff --git a/include/hw/acpi/acpi_dev_interface.h b/include/hw/acpi/acpi_dev_interface.h index da4ef7f..901a4ae 100644 --- a/include/hw/acpi/acpi_dev_interface.h +++ b/include/hw/acpi/acpi_dev_interface.h @@ -10,6 +10,7 @@ typedef enum { ACPI_PCI_HOTPLUG_STATUS = 2, ACPI_CPU_HOTPLUG_STATUS = 4, ACPI_MEMORY_HOTPLUG_STATUS = 8, + ACPI_NVDIMM_HOTPLUG_STATUS = 16, } AcpiEventStatusBits; #define TYPE_ACPI_DEVICE_IF "acpi-device-interface" diff --git a/include/hw/mem/nvdimm.h b/include/hw/mem/nvdimm.h index 232437c..4b90584 100644 --- a/include/hw/mem/nvdimm.h +++ b/include/hw/mem/nvdimm.h @@ -133,4 +133,5 @@ void nvdimm_build_acpi(GArray *table_offsets, GArray *table_data, BIOSLinker *linker, AcpiNVDIMMState *state, uint32_t ram_slots); void nvdimm_acpi_hotplug(AcpiNVDIMMState *state); +void nvdimm_acpi_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev); #endif