Differential D18937 Diff 53198 head/sys/dev/tpm/tpm_crb.c

Changeset View

Standalone View

head/sys/dev/tpm/tpm_crb.c

	Show First 20 Lines • Show All 98 Lines • ▼ Show 20 Lines
	static void tpmcrb_relinquish_locality(struct tpm_sc *sc);			static void tpmcrb_relinquish_locality(struct tpm_sc *sc);
	static bool tpmcrb_cancel_cmd(struct tpm_sc *sc);			static bool tpmcrb_cancel_cmd(struct tpm_sc *sc);

	char *tpmcrb_ids[] = {"MSFT0101", NULL};			char *tpmcrb_ids[] = {"MSFT0101", NULL};

	static int			static int
	tpmcrb_acpi_probe(device_t dev)			tpmcrb_acpi_probe(device_t dev)
	{			{
	struct resource *res;			int err;
	int err, rid = 0;			ACPI_TABLE_TPM23 *tbl;
	uint32_t caps;			ACPI_STATUS status;

	err = ACPI_ID_PROBE(device_get_parent(dev), dev, tpmcrb_ids, NULL);			err = ACPI_ID_PROBE(device_get_parent(dev), dev, tpmcrb_ids, NULL);
	if (err > 0)			if (err > 0)
	return (err);			return (err);
				/Find TPM2 Header/
				status = AcpiGetTable(ACPI_SIG_TPM2, 1, (ACPI_TABLE_HEADER **) &tbl);
				if(ACPI_FAILURE(status) \|\|
				tbl->StartMethod != TPM2_START_METHOD_CRB)
				err = ENXIO;

	/* Check if device is in CRB mode */
	res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
	if (res == NULL)
	return (ENXIO);

	caps = bus_read_4(res, TPM_CRB_INTF_ID);
	bus_release_resource(dev, SYS_RES_MEMORY, rid, res);

	if ((caps & TPM_CRB_INTF_ID_TYPE) != TPM_CRB_INTF_ID_TYPE_CRB)
	return (ENXIO);

	device_set_desc(dev, "Trusted Platform Module 2.0, CRB mode");			device_set_desc(dev, "Trusted Platform Module 2.0, CRB mode");
	return (BUS_PROBE_DEFAULT);			return (err);
	}			}

	static ACPI_STATUS			static ACPI_STATUS
	tpmcrb_fix_buff_offsets(ACPI_RESOURCE res, void arg)			tpmcrb_fix_buff_offsets(ACPI_RESOURCE res, void arg)
	{			{
	struct tpmcrb_sc *crb_sc;			struct tpmcrb_sc *crb_sc;
	size_t length;			size_t length;
	uint32_t base_addr;			uint32_t base_addr;
	▲ Show 20 Lines • Show All 291 Lines • Show Last 20 Lines