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: 531972 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 D885D140307 for ; Mon, 19 Oct 2015 04:06:53 +1100 (AEDT) Received: from localhost ([::1]:34735 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZnrQ3-0002WF-Sg for incoming@patchwork.ozlabs.org; Sun, 18 Oct 2015 13:06:51 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42979) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZnrK4-0008Nu-HU for qemu-devel@nongnu.org; Sun, 18 Oct 2015 13:00:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZnrK3-0000QP-Jy for qemu-devel@nongnu.org; Sun, 18 Oct 2015 13:00:40 -0400 Received: from mga09.intel.com ([134.134.136.24]:58036) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZnrK3-0000CK-Et for qemu-devel@nongnu.org; Sun, 18 Oct 2015 13:00:39 -0400 Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga102.jf.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 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> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.24 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 Subject: [Qemu-devel] [PATCH v4 30/33] nvdimm acpi: support DSM_DEV_FUN_GET_NAMESPACE_LABEL_DATA X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org 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; };