From patchwork Mon Oct 19 00:54:16 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Guangrong X-Patchwork-Id: 7431301 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 996899F36A for ; Sun, 18 Oct 2015 17:01:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B16AA20145 for ; Sun, 18 Oct 2015 17:01:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BD46F200E7 for ; Sun, 18 Oct 2015 17:00:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932310AbbJRRAk (ORCPT ); Sun, 18 Oct 2015 13:00:40 -0400 Received: from mga11.intel.com ([192.55.52.93]:51171 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932308AbbJRRAj (ORCPT ); Sun, 18 Oct 2015 13:00:39 -0400 Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga102.fm.intel.com with ESMTP; 18 Oct 2015 10:00:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,698,1437462000"; d="scan'208";a="583276025" Received: from xiaoreal1.sh.intel.com (HELO xiaoreal1.sh.intel.com.sh.intel.com) ([10.239.48.79]) by FMSMGA003.fm.intel.com with ESMTP; 18 Oct 2015 10:00:36 -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 30/33] nvdimm acpi: support DSM_DEV_FUN_GET_NAMESPACE_LABEL_DATA Date: Mon, 19 Oct 2015 08:54:16 +0800 Message-Id: <1445216059-88521-31-git-send-email-guangrong.xiao@linux.intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1445216059-88521-1-git-send-email-guangrong.xiao@linux.intel.com> References: <1445216059-88521-1-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=-5.0 required=5.0 tests=BAYES_00, DATE_IN_FUTURE_06_12, 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 Function 5 is used to get Namespace Label Data Signed-off-by: Xiao Guangrong --- hw/acpi/nvdimm.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c index 1274d95..1683a82 100644 --- a/hw/acpi/nvdimm.c +++ b/hw/acpi/nvdimm.c @@ -501,6 +501,7 @@ struct dsm_in { /* the remaining size in the page is used by arg3. */ union { uint8_t arg3[0]; + cmd_in_get_label_data cmd_get_label_data; cmd_in_set_label_data cmd_set_label_data; }; } QEMU_PACKED; @@ -624,6 +625,47 @@ static void nvdimm_dsm_func_label_size(NVDIMMDevice *nvdimm, GArray *out) g_array_append_vals(out, &cmd_label_size, sizeof(cmd_label_size)); } +/* + * please refer to DSM specification 4.5 Get Namespace Label Data (Function + * Index 5). + */ +static void +nvdimm_dsm_cmd_get_label_data(NVDIMMDevice *nvdimm, dsm_in *in, GArray *out) +{ + cmd_in_get_label_data *cmd_in = &in->cmd_get_label_data; + uint32_t status = DSM_STATUS_SUCCESS; + + le32_to_cpus(&cmd_in->offset); + le32_to_cpus(&cmd_in->length); + + nvdimm_debug("Read Label Data: offset %#x length %#x.\n", + cmd_in->offset, cmd_in->length); + + if (nvdimm->label_size < cmd_in->offset + cmd_in->length) { + nvdimm_debug("position %#x is beyond label data (len = %#lx).\n", + cmd_in->offset + cmd_in->length, nvdimm->label_size); + status = DSM_DEV_STATUS_INVALID_PARAS; + goto exit; + } + + if (cmd_in->length > nvdimm_get_max_xfer_label_size()) { + nvdimm_debug("get length (%#x) is larger than max_xfer (%#x).\n", + cmd_in->length, nvdimm_get_max_xfer_label_size()); + status = DSM_DEV_STATUS_INVALID_PARAS; + goto exit; + } + + /* write cmd_out_get_label_data.status. */ + nvdimm_dsm_write_status(out, status); + /* write cmd_out_get_label_data.out_buf. */ + g_array_append_vals(out, nvdimm->label_data + cmd_in->offset, + cmd_in->length); + return; + +exit: + nvdimm_dsm_write_status(out, status); +} + static void nvdimm_dsm_write_nvdimm(dsm_in *in, GArray *out) { GSList *list = nvdimm_get_plugged_device_list(); @@ -644,6 +686,9 @@ static void nvdimm_dsm_write_nvdimm(dsm_in *in, GArray *out) case DSM_DEV_FUN_NAMESPACE_LABEL_SIZE: nvdimm_dsm_func_label_size(nvdimm, out); goto free; + case DSM_DEV_FUN_GET_NAMESPACE_LABEL_DATA: + nvdimm_dsm_cmd_get_label_data(nvdimm, in, out); + goto free; default: status = DSM_STATUS_NOT_SUPPORTED; };