@@ -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;
};
Function 5 is used to get Namespace Label Data Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> --- hw/acpi/nvdimm.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+)