int cxl_dev_state_identify()

in core/mbox.c [678:711]

• 28 lines of code
• 2 McCabe index (conditional complexity)

int cxl_dev_state_identify(struct cxl_dev_state *cxlds)
{
	/* See CXL 2.0 Table 175 Identify Memory Device Output Payload */
	struct cxl_mbox_identify id;
	int rc;

	rc = cxl_mbox_send_cmd(cxlds, CXL_MBOX_OP_IDENTIFY, NULL, 0, &id,
			       sizeof(id));
	if (rc < 0)
		return rc;

	cxlds->total_bytes =
		le64_to_cpu(id.total_capacity) * CXL_CAPACITY_MULTIPLIER;
	cxlds->volatile_only_bytes =
		le64_to_cpu(id.volatile_capacity) * CXL_CAPACITY_MULTIPLIER;
	cxlds->persistent_only_bytes =
		le64_to_cpu(id.persistent_capacity) * CXL_CAPACITY_MULTIPLIER;
	cxlds->partition_align_bytes =
		le64_to_cpu(id.partition_align) * CXL_CAPACITY_MULTIPLIER;

	dev_dbg(cxlds->dev,
		"Identify Memory Device\n"
		"     total_bytes = %#llx\n"
		"     volatile_only_bytes = %#llx\n"
		"     persistent_only_bytes = %#llx\n"
		"     partition_align_bytes = %#llx\n",
		cxlds->total_bytes, cxlds->volatile_only_bytes,
		cxlds->persistent_only_bytes, cxlds->partition_align_bytes);

	cxlds->lsa_size = le32_to_cpu(id.lsa_size);
	memcpy(cxlds->firmware_version, id.fw_revision, sizeof(id.fw_revision));

	return 0;
}