From patchwork Fri Aug 12 06:54:09 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Guangrong X-Patchwork-Id: 658673 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3s9ndn6psWz9t0k for ; Sat, 13 Aug 2016 00:41:49 +1000 (AEST) Received: from localhost ([::1]:52507 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bYDee-0004p2-0L for incoming@patchwork.ozlabs.org; Fri, 12 Aug 2016 10:41:48 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33067) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bYDKd-0004Zs-3g for qemu-devel@nongnu.org; Fri, 12 Aug 2016 10:21:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bYDKR-0001jb-U8 for qemu-devel@nongnu.org; Fri, 12 Aug 2016 10:21:06 -0400 Received: from mga04.intel.com ([192.55.52.120]:16173) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bYDKR-0001hn-Lg for qemu-devel@nongnu.org; Fri, 12 Aug 2016 10:20:55 -0400 Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga104.fm.intel.com with ESMTP; 12 Aug 2016 00:07:31 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,509,1464678000"; d="scan'208";a="154662669" Received: from xiaoreal1.sh.intel.com (HELO xiaoreal1.sh.intel.com.sh.intel.com) ([10.239.48.133]) by fmsmga004.fm.intel.com with ESMTP; 12 Aug 2016 00:07:23 -0700 From: Xiao Guangrong To: pbonzini@redhat.com, imammedo@redhat.com Date: Fri, 12 Aug 2016 14:54:09 +0800 Message-Id: <1470984850-66891-8-git-send-email-guangrong.xiao@linux.intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1470984850-66891-1-git-send-email-guangrong.xiao@linux.intel.com> References: <1470984850-66891-1-git-send-email-guangrong.xiao@linux.intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.55.52.120 Subject: [Qemu-devel] [PATCH v2 7/8] pc: acpi: memhp: nvdimm hotplug support X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Xiao Guangrong , ehabkost@redhat.com, kvm@vger.kernel.org, mst@redhat.com, gleb@kernel.org, mtosatti@redhat.com, qemu-devel@nongnu.org, stefanha@redhat.com, dan.j.williams@intel.com, rth@twiddle.net Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" It notifies the nvdimm root device if there is a nvdimm device plugged/unplugged A new bit is used to indicates it is a nvdimm device Signed-off-by: Xiao Guangrong --- docs/specs/acpi_mem_hotplug.txt | 4 +++- hw/acpi/memory_hotplug.c | 5 ----- hw/i386/acpi-build.c | 26 ++++++++++++++++++++++---- hw/mem/nvdimm.c | 4 ---- include/hw/acpi/pc-hotplug.h | 1 + 5 files changed, 26 insertions(+), 14 deletions(-) diff --git a/docs/specs/acpi_mem_hotplug.txt b/docs/specs/acpi_mem_hotplug.txt index 3df3620..cd9e233 100644 --- a/docs/specs/acpi_mem_hotplug.txt +++ b/docs/specs/acpi_mem_hotplug.txt @@ -21,7 +21,9 @@ Memory hot-plug interface (IO port 0xa00-0xa17, 1-4 byte access): It's valid only when bit 1 is set. 2: Device remove event, used to distinguish device for which no device eject request to OSPM was issued. - 3-7: reserved and should be ignored by OSPM + 3: reserved and should be ignored by OSPM + 4: Device is a NVDIMM device. + 5-7: reserved and should be ignored by OSPM [0x15-0x17] reserved write access: diff --git a/hw/acpi/memory_hotplug.c b/hw/acpi/memory_hotplug.c index 73fa62d..d1c2e92 100644 --- a/hw/acpi/memory_hotplug.c +++ b/hw/acpi/memory_hotplug.c @@ -239,11 +239,6 @@ void acpi_memory_plug_cb(HotplugHandler *hotplug_dev, 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/i386/acpi-build.c b/hw/i386/acpi-build.c index b1d0ced..02cfc4d 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -1008,9 +1008,10 @@ static Aml *build_crs(PCIHostState *host, CrsRangeSet *range_set) return crs; } -static void build_memory_devices(Aml *sb_scope, int nr_mem, - uint16_t io_base, uint16_t io_len) +static void build_memory_devices(Aml *sb_scope, int nr_mem, uint16_t io_base, + uint16_t io_len, bool enable_nvdimm) { + #define BASEPATH "\\_SB.PCI0." MEMORY_HOTPLUG_DEVICE "." int i; Aml *scope; Aml *crs; @@ -1065,6 +1066,12 @@ static void build_memory_devices(Aml *sb_scope, int nr_mem, aml_append(field, /* initiates device eject, write only */ aml_named_field(MEMORY_SLOT_EJECT, 1)); + + if (enable_nvdimm) { + aml_append(field, + /* initiates nvdimm device, read only */ + aml_named_field(MEMORY_SLOT_NVDIMM, 1)); + } aml_append(scope, field); field = aml_field(MEMORY_HOTPLUG_IO_REGION, AML_DWORD_ACC, @@ -1079,7 +1086,6 @@ static void build_memory_devices(Aml *sb_scope, int nr_mem, aml_append(sb_scope, scope); for (i = 0; i < nr_mem; i++) { - #define BASEPATH "\\_SB.PCI0." MEMORY_HOTPLUG_DEVICE "." const char *s; dev = aml_device("MP%02X", i); @@ -1124,6 +1130,17 @@ static void build_memory_devices(Aml *sb_scope, int nr_mem, method = aml_method(MEMORY_SLOT_NOTIFY_METHOD, 2, AML_NOTSERIALIZED); for (i = 0; i < nr_mem; i++) { ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i))); + + if (enable_nvdimm) { + Aml *ifnvdimm; + + ifnvdimm = aml_if(aml_equal(aml_name(BASEPATH MEMORY_SLOT_NVDIMM), + aml_int(1))); + aml_append(ifnvdimm, aml_notify(aml_name("\\_SB.NVDR"), + aml_int(0x80))); + aml_append(ifctx, ifnvdimm); + } + aml_append(ifctx, aml_notify(aml_name("MP%.02X", i), aml_arg(1)) ); @@ -2285,7 +2302,8 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, sb_scope = aml_scope("\\_SB"); { build_memory_devices(sb_scope, nr_mem, pm->mem_hp_io_base, - pm->mem_hp_io_len); + pm->mem_hp_io_len, + pcms->acpi_nvdimm_state.is_enabled); { Object *pci_host; diff --git a/hw/mem/nvdimm.c b/hw/mem/nvdimm.c index 5bc81fe..af32508 100644 --- a/hw/mem/nvdimm.c +++ b/hw/mem/nvdimm.c @@ -155,13 +155,9 @@ static void nvdimm_prepare_unplug(DeviceState *dev) 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/pc-hotplug.h b/include/hw/acpi/pc-hotplug.h index 6a8d268..a14977d 100644 --- a/include/hw/acpi/pc-hotplug.h +++ b/include/hw/acpi/pc-hotplug.h @@ -43,6 +43,7 @@ #define MEMORY_SLOT_INSERT_EVENT "MINS" #define MEMORY_SLOT_REMOVE_EVENT "MRMV" #define MEMORY_SLOT_EJECT "MEJ" +#define MEMORY_SLOT_NVDIMM "NVDM" #define MEMORY_SLOT_SLECTOR "MSEL" #define MEMORY_SLOT_OST_EVENT "MOEV" #define MEMORY_SLOT_OST_STATUS "MOSC"