From patchwork Fri Jan 17 17:45:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shameerali Kolothum Thodi X-Patchwork-Id: 1224918 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=huawei.com 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 ozlabs.org (Postfix) with ESMTPS id 47zpY00q1jz9sPJ for ; Sat, 18 Jan 2020 04:52:04 +1100 (AEDT) Received: from localhost ([::1]:32916 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1isVmr-0007rf-W8 for incoming@patchwork.ozlabs.org; Fri, 17 Jan 2020 12:52:02 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:55891) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1isViA-0002Pv-FU for qemu-devel@nongnu.org; Fri, 17 Jan 2020 12:47:11 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1isVi9-0007p8-3R for qemu-devel@nongnu.org; Fri, 17 Jan 2020 12:47:10 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:47276 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1isVi3-0007hZ-MN; Fri, 17 Jan 2020 12:47:03 -0500 Received: from DGGEMS401-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id B9288ADAA69314790517; Sat, 18 Jan 2020 01:47:01 +0800 (CST) Received: from S00345302A-PC.china.huawei.com (10.202.227.237) by DGGEMS401-HUB.china.huawei.com (10.3.19.201) with Microsoft SMTP Server id 14.3.439.0; Sat, 18 Jan 2020 01:46:54 +0800 From: Shameer Kolothum To: , , , Subject: [PATCH v2 5/7] hw/arm/virt: Add nvdimm hotplug support Date: Fri, 17 Jan 2020 17:45:20 +0000 Message-ID: <20200117174522.22044-6-shameerali.kolothum.thodi@huawei.com> X-Mailer: git-send-email 2.12.0.windows.1 In-Reply-To: <20200117174522.22044-1-shameerali.kolothum.thodi@huawei.com> References: <20200117174522.22044-1-shameerali.kolothum.thodi@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.202.227.237] X-CFilter-Loop: Reflected X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 45.249.212.35 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: peter.maydell@linaro.org, xiaoguangrong.eric@gmail.com, mst@redhat.com, linuxarm@huawei.com, xuwei5@hisilicon.com, shannon.zhaosl@gmail.com, lersek@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This adds support for nvdimm hotplug events through GED and enables nvdimm for the arm/virt. Now Guests with ACPI can have both cold and hot plug of nvdimms. Hot removal functionality is not yet supported. Signed-off-by: Shameer Kolothum Reviewed-by: Igor Mammedov Reviewed-by: Eric Auger --- docs/specs/acpi_hw_reduced_hotplug.rst | 1 + hw/acpi/generic_event_device.c | 13 +++++++++++++ hw/arm/virt.c | 16 +++++++++++----- include/hw/acpi/generic_event_device.h | 1 + 4 files changed, 26 insertions(+), 5 deletions(-) diff --git a/docs/specs/acpi_hw_reduced_hotplug.rst b/docs/specs/acpi_hw_reduced_hotplug.rst index 911a98255b..e3abe975bf 100644 --- a/docs/specs/acpi_hw_reduced_hotplug.rst +++ b/docs/specs/acpi_hw_reduced_hotplug.rst @@ -63,6 +63,7 @@ GED IO interface (4 byte access) bits: 0: Memory hotplug event 1: System power down event + 2: NVDIMM hotplug event 2-31: Reserved **write_access:** diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c index 9cee90cc70..ad1b684304 100644 --- a/hw/acpi/generic_event_device.c +++ b/hw/acpi/generic_event_device.c @@ -16,6 +16,7 @@ #include "hw/acpi/generic_event_device.h" #include "hw/irq.h" #include "hw/mem/pc-dimm.h" +#include "hw/mem/nvdimm.h" #include "hw/qdev-properties.h" #include "migration/vmstate.h" #include "qemu/error-report.h" @@ -23,6 +24,7 @@ static const uint32_t ged_supported_events[] = { ACPI_GED_MEM_HOTPLUG_EVT, ACPI_GED_PWR_DOWN_EVT, + ACPI_GED_NVDIMM_HOTPLUG_EVT, }; /* @@ -110,6 +112,11 @@ void build_ged_aml(Aml *table, const char *name, HotplugHandler *hotplug_dev, aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE), aml_int(0x80))); break; + case ACPI_GED_NVDIMM_HOTPLUG_EVT: + aml_append(if_ctx, + aml_notify(aml_name("\\_SB.NVDR"), + aml_int(0x80))); + break; default: /* * Please make sure all the events in ged_supported_events[] @@ -175,7 +182,11 @@ static void acpi_ged_device_plug_cb(HotplugHandler *hotplug_dev, AcpiGedState *s = ACPI_GED(hotplug_dev); if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { + if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) { + nvdimm_acpi_plug_cb(hotplug_dev, dev); + } else { acpi_memory_plug_cb(hotplug_dev, &s->memhp_state, dev, errp); + } } else { error_setg(errp, "virt: device plug request for unsupported device" " type: %s", object_get_typename(OBJECT(dev))); @@ -192,6 +203,8 @@ static void acpi_ged_send_event(AcpiDeviceIf *adev, AcpiEventStatusBits ev) sel = ACPI_GED_MEM_HOTPLUG_EVT; } else if (ev & ACPI_POWER_DOWN_STATUS) { sel = ACPI_GED_PWR_DOWN_EVT; + } else if (ev & ACPI_NVDIMM_HOTPLUG_STATUS) { + sel = ACPI_GED_NVDIMM_HOTPLUG_EVT; } else { /* Unknown event. Return without generating interrupt. */ warn_report("GED: Unsupported event %d. No irq injected", ev); diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 7987c8f5b8..5ea2584491 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -543,6 +543,10 @@ static inline DeviceState *create_acpi_ged(VirtMachineState *vms) event |= ACPI_GED_MEM_HOTPLUG_EVT; } + if (ms->nvdimms_state->is_enabled) { + event |= ACPI_GED_NVDIMM_HOTPLUG_EVT; + } + dev = qdev_create(NULL, TYPE_ACPI_GED); qdev_prop_set_uint32(dev, "ged-event", event); @@ -1928,19 +1932,20 @@ static void virt_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { VirtMachineState *vms = VIRT_MACHINE(hotplug_dev); + const MachineState *ms = MACHINE(hotplug_dev); const bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); - if (is_nvdimm) { - error_setg(errp, "nvdimm is not yet supported"); - return; - } - if (!vms->acpi_dev) { error_setg(errp, "memory hotplug is not enabled: missing acpi-ged device"); return; } + if (is_nvdimm && !ms->nvdimms_state->is_enabled) { + error_setg(errp, "nvdimm is not enabled: missing 'nvdimm' in '-M'"); + return; + } + pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), NULL, errp); } @@ -2071,6 +2076,7 @@ static void virt_machine_class_init(ObjectClass *oc, void *data) hc->plug = virt_machine_device_plug_cb; hc->unplug_request = virt_machine_device_unplug_request_cb; mc->numa_mem_supported = true; + mc->nvdimm_supported = true; mc->auto_enable_numa_with_memhp = true; } diff --git a/include/hw/acpi/generic_event_device.h b/include/hw/acpi/generic_event_device.h index d157eac088..9eb86ca4fd 100644 --- a/include/hw/acpi/generic_event_device.h +++ b/include/hw/acpi/generic_event_device.h @@ -82,6 +82,7 @@ */ #define ACPI_GED_MEM_HOTPLUG_EVT 0x1 #define ACPI_GED_PWR_DOWN_EVT 0x2 +#define ACPI_GED_NVDIMM_HOTPLUG_EVT 0x4 typedef struct GEDState { MemoryRegion io;