From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57485) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZtBHr-00086s-Oz for qemu-devel@nongnu.org; Mon, 02 Nov 2015 04:20:27 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZtBHq-00041g-NP for qemu-devel@nongnu.org; Mon, 02 Nov 2015 04:20:23 -0500 Received: from mga02.intel.com ([134.134.136.20]:52991) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZtBHq-0003zC-EI for qemu-devel@nongnu.org; Mon, 02 Nov 2015 04:20:22 -0500 From: Xiao Guangrong Date: Mon, 2 Nov 2015 17:13:33 +0800 Message-Id: <1446455617-129562-32-git-send-email-guangrong.xiao@linux.intel.com> In-Reply-To: <1446455617-129562-1-git-send-email-guangrong.xiao@linux.intel.com> References: <1446455617-129562-1-git-send-email-guangrong.xiao@linux.intel.com> Subject: [Qemu-devel] [PATCH v7 31/35] nvdimm acpi: support Get Namespace Label Data function List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: pbonzini@redhat.com, imammedo@redhat.com Cc: vsementsov@virtuozzo.com, 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 Function 5 is used to get Namespace Label Data Reviewed-by: Stefan Hajnoczi 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 cdc361c..f30e2ff 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; }; -- 1.8.3.1