From patchwork Fri Oct 30 05:56:23 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Guangrong X-Patchwork-Id: 538162 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 44B7314110C for ; Fri, 30 Oct 2015 17:18:47 +1100 (AEDT) Received: from localhost ([::1]:48739 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zs31R-0007S0-7K for incoming@patchwork.ozlabs.org; Fri, 30 Oct 2015 02:18:45 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57154) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zs2mB-0005wH-9i for qemu-devel@nongnu.org; Fri, 30 Oct 2015 02:03:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zs2mA-0007nc-0s for qemu-devel@nongnu.org; Fri, 30 Oct 2015 02:02:59 -0400 Received: from mga11.intel.com ([192.55.52.93]:19647) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zs2m9-0007g3-OA for qemu-devel@nongnu.org; Fri, 30 Oct 2015 02:02:57 -0400 Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga102.fm.intel.com with ESMTP; 29 Oct 2015 23:02:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,217,1444719600"; d="scan'208";a="590814407" 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; 29 Oct 2015 23:02:55 -0700 From: Xiao Guangrong To: pbonzini@redhat.com, imammedo@redhat.com Date: Fri, 30 Oct 2015 13:56:23 +0800 Message-Id: <1446184587-142784-30-git-send-email-guangrong.xiao@linux.intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1446184587-142784-1-git-send-email-guangrong.xiao@linux.intel.com> References: <1446184587-142784-1-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: 192.55.52.93 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 v6 29/33] nvdimm acpi: support Get Namespace Label Data function 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 | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c index 67c4699..8c27b25 100644 --- a/hw/acpi/nvdimm.c +++ b/hw/acpi/nvdimm.c @@ -428,6 +428,7 @@ struct NvdimmDsmIn { union { uint8_t arg3[0]; NvdimmFuncInSetLabelData func_set_label_data; + NvdimmFuncInGetLabelData func_get_label_data; }; } QEMU_PACKED; typedef struct NvdimmDsmIn NvdimmDsmIn; @@ -527,6 +528,65 @@ static void nvdimm_dsm_func_label_size(NVDIMMDevice *nvdimm, GArray *out) g_array_append_vals(out, &func_label_size, sizeof(func_label_size)); } +static uint32_t nvdimm_rw_label_data_check(NVDIMMDevice *nvdimm, + uint32_t offset, uint32_t length) +{ + if (offset + length < offset) { + nvdimm_debug("offset %#x + length %#x is overflow.\n", offset, + length); + return NVDIMM_DSM_DEV_STATUS_INVALID_PARAS; + } + + if (nvdimm->label_size < offset + length) { + nvdimm_debug("position %#x is beyond label data (len = %#lx).\n", + offset + length, nvdimm->label_size); + return NVDIMM_DSM_DEV_STATUS_INVALID_PARAS; + } + + if (length > nvdimm_get_max_xfer_label_size()) { + nvdimm_debug("length (%#x) is larger than max_xfer (%#x).\n", + length, nvdimm_get_max_xfer_label_size()); + return NVDIMM_DSM_DEV_STATUS_INVALID_PARAS; + } + + return NVDIMM_DSM_STATUS_SUCCESS; +} + +/* + * DSM Spec Rev1 4.5 Get Namespace Label Data (Function Index 5). + */ +static void nvdimm_dsm_func_get_label_data(NVDIMMDevice *nvdimm, + NvdimmDsmIn *in, GArray *out) +{ + NVDIMMClass *nvc = NVDIMM_GET_CLASS(nvdimm); + NvdimmFuncInGetLabelData *get_label_data = &in->func_get_label_data; + void *buf; + uint32_t status; + + le32_to_cpus(&get_label_data->offset); + le32_to_cpus(&get_label_data->length); + + nvdimm_debug("Read Label Data: offset %#x length %#x.\n", + get_label_data->offset, get_label_data->length); + + status = nvdimm_rw_label_data_check(nvdimm, get_label_data->offset, + get_label_data->length); + if (status != NVDIMM_DSM_STATUS_SUCCESS) { + goto exit; + } + + /* write nvdimm_func_out_get_label_data.status. */ + nvdimm_dsm_write_status(out, status); + /* write nvdimm_func_out_get_label_data.out_buf. */ + buf = acpi_data_push(out, get_label_data->length); + nvc->read_label_data(nvdimm, buf, get_label_data->length, + get_label_data->offset); + return; + +exit: + nvdimm_dsm_write_status(out, status); +} + static void nvdimm_dsm_device(NvdimmDsmIn *in, GArray *out) { GSList *list = nvdimm_get_plugged_device_list(); @@ -554,6 +614,9 @@ static void nvdimm_dsm_device(NvdimmDsmIn *in, GArray *out) case 0x4 /* Get Namespace Label Size */: nvdimm_dsm_func_label_size(nvdimm, out); goto free; + case 0x5 /* Get Namespace Label Data */: + nvdimm_dsm_func_get_label_data(nvdimm, in, out); + goto free; default: status = NVDIMM_DSM_STATUS_NOT_SUPPORTED; };