+static int intel_security_disable(struct nvdimm *nvdimm,
+ const struct nvdimm_key_data *key_data)
+{
+ int rc;
+ struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
+ struct {
+ struct nd_cmd_pkg pkg;
+ struct nd_intel_disable_passphrase cmd;
+ } nd_cmd = {
+ .pkg = {
+ .nd_command = NVDIMM_INTEL_DISABLE_PASSPHRASE,
+ .nd_family = NVDIMM_FAMILY_INTEL,
+ .nd_size_in = ND_INTEL_PASSPHRASE_SIZE,
+ .nd_size_out = ND_INTEL_STATUS_SIZE,
+ .nd_fw_size = ND_INTEL_STATUS_SIZE,
+ },
+ };
+
+ if (!test_bit(NVDIMM_INTEL_DISABLE_PASSPHRASE, &nfit_mem->dsm_mask))
+ return -ENOTTY;
+
+ memcpy(nd_cmd.cmd.passphrase, key_data->data,
+ sizeof(nd_cmd.cmd.passphrase));
+ rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
+ if (rc < 0)
+ return rc;
+
+ switch (nd_cmd.cmd.status) {
+ case 0:
+ break;
+ case ND_INTEL_STATUS_INVALID_PASS:
+ return -EINVAL;
+ case ND_INTEL_STATUS_INVALID_STATE:
+ default:
+ return -ENXIO;
+ }
+
+ return 0;
+}
+