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nvdimm: implement NVDIMM device abstract 

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 <stefanha@redhat.com>
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Xiao Guangrong 2015-12-02 15:20:56 +08:00 committed by Michael S. Tsirkin
parent 40c520418b
commit 5c42eef243
6 changed files with 83 additions and 0 deletions
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1
default-configs/i386-softmmu.mak
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@ -51,6 +51,7 @@ 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

1
default-configs/x86_64-softmmu.mak
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@ -51,6 +51,7 @@ 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

5
hw/acpi/memory_hotplug.c
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@ -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) {

1
hw/mem/Makefile.objs
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@ -1 +1,2 @@
common-obj-$(CONFIG_MEM_HOTPLUG) += pc-dimm.o
common-obj-$(CONFIG_NVDIMM) += nvdimm.o

46
hw/mem/nvdimm.c Normal file
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@ -0,0 +1,46 @@
/*
* Non-Volatile Dual In-line Memory Module Virtualization Implementation
*
* Copyright(C) 2015 Intel Corporation.
*
* Author:
* Xiao Guangrong <guangrong.xiao@linux.intel.com>
*
* 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 <http://www.gnu.org/licenses/>
*/
#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)

29
include/hw/mem/nvdimm.h Normal file
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@ -0,0 +1,29 @@
/*
* Non-Volatile Dual In-line Memory Module Virtualization Implementation
*
* Copyright(C) 2015 Intel Corporation.
*
* Author:
* Xiao Guangrong <guangrong.xiao@linux.intel.com>
*
* 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