Function 5 is used to get Namespace Label Data Signed-off-by: Xiao Guangrong <guangrong.xiao@xxxxxxxxxxxxxxx> --- hw/acpi/nvdimm.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c index 72203d2..5b621ed 100644 --- a/hw/acpi/nvdimm.c +++ b/hw/acpi/nvdimm.c @@ -428,6 +428,7 @@ struct nvdimm_dsm_in { union { uint8_t arg3[0]; nvdimm_func_in_set_label_data func_set_label_data; + nvdimm_func_in_get_label_data func_get_label_data; }; } QEMU_PACKED; typedef struct nvdimm_dsm_in nvdimm_dsm_in; @@ -527,6 +528,50 @@ static void nvdimm_dsm_func_label_size(NVDIMMDevice *nvdimm, GArray *out) g_array_append_vals(out, &func_label_size, sizeof(func_label_size)); } +/* + * DSM Spec Rev1 4.5 Get Namespace Label Data (Function Index 5). + */ +static void nvdimm_dsm_func_get_label_data(NVDIMMDevice *nvdimm, + nvdimm_dsm_in *in, GArray *out) +{ + NVDIMMClass *nvc = NVDIMM_GET_CLASS(nvdimm); + nvdimm_func_in_get_label_data *get_label_data = &in->func_get_label_data; + void *buf; + uint32_t status = NVDIMM_DSM_STATUS_SUCCESS; + + 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); + + if (nvdimm->label_size < get_label_data->offset + get_label_data->length) { + nvdimm_debug("position %#x is beyond label data (len = %#lx).\n", + get_label_data->offset + get_label_data->length, + nvdimm->label_size); + status = NVDIMM_DSM_DEV_STATUS_INVALID_PARAS; + goto exit; + } + + if (get_label_data->length > nvdimm_get_max_xfer_label_size()) { + nvdimm_debug("get length (%#x) is larger than max_xfer (%#x).\n", + get_label_data->length, nvdimm_get_max_xfer_label_size()); + status = NVDIMM_DSM_DEV_STATUS_INVALID_PARAS; + 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(nvdimm_dsm_in *in, GArray *out) { GSList *list = nvdimm_get_plugged_device_list(); @@ -554,6 +599,9 @@ static void nvdimm_dsm_device(nvdimm_dsm_in *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 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html