Function 5 is used to get Namespace Label Data Signed-off-by: Xiao Guangrong <guangrong.x...@linux.intel.com> --- 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; }; -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html