tpm_crb: Use the common ACPI definition of struct acpi_tpm2
include/acpi/actbl2.h is the proper place for these definitions
and the needed TPM2 ones have been there since
commit 413d4a6defe0 ("ACPICA: Update TPM2 ACPI table")
This also drops a couple of le32_to_cpu's for members of this table,
the existing swapping was not done consistently, and the standard
used by other Linux callers of acpi_get_table is unswapped.
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Tested-by: Wilck, Martin <martin.wilck@ts.fujitsu.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Acked-by: Peter Huewe <peterhuewe@gmx.de>
diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c
index 8342cf5..8dd7069 100644
--- a/drivers/char/tpm/tpm_crb.c
+++ b/drivers/char/tpm/tpm_crb.c
@@ -34,14 +34,6 @@
CRB_ACPI_START_INDEX = 1,
};
-struct acpi_tpm2 {
- struct acpi_table_header hdr;
- u16 platform_class;
- u16 reserved;
- u64 control_area_pa;
- u32 start_method;
-} __packed;
-
enum crb_ca_request {
CRB_CA_REQ_GO_IDLE = BIT(0),
CRB_CA_REQ_CMD_READY = BIT(1),
@@ -207,7 +199,7 @@
static int crb_acpi_add(struct acpi_device *device)
{
struct tpm_chip *chip;
- struct acpi_tpm2 *buf;
+ struct acpi_table_tpm2 *buf;
struct crb_priv *priv;
struct device *dev = &device->dev;
acpi_status status;
@@ -217,13 +209,14 @@
status = acpi_get_table(ACPI_SIG_TPM2, 1,
(struct acpi_table_header **) &buf);
- if (ACPI_FAILURE(status)) {
- dev_err(dev, "failed to get TPM2 ACPI table\n");
+ if (ACPI_FAILURE(status) || buf->header.length < sizeof(*buf)) {
+ dev_err(dev, FW_BUG "failed to get TPM2 ACPI table\n");
return -ENODEV;
}
/* Should the FIFO driver handle this? */
- if (buf->start_method == TPM2_START_FIFO)
+ sm = buf->start_method;
+ if (sm == ACPI_TPM2_MEMORY_MAPPED)
return -ENODEV;
chip = tpmm_chip_alloc(dev, &tpm_crb);
@@ -232,11 +225,6 @@
chip->flags = TPM_CHIP_FLAG_TPM2;
- if (buf->hdr.length < sizeof(struct acpi_tpm2)) {
- dev_err(dev, "TPM2 ACPI table has wrong size");
- return -EINVAL;
- }
-
priv = (struct crb_priv *) devm_kzalloc(dev, sizeof(struct crb_priv),
GFP_KERNEL);
if (!priv) {
@@ -244,21 +232,20 @@
return -ENOMEM;
}
- sm = le32_to_cpu(buf->start_method);
-
/* The reason for the extra quirk is that the PTT in 4th Gen Core CPUs
* report only ACPI start but in practice seems to require both
* ACPI start and CRB start.
*/
- if (sm == TPM2_START_CRB || sm == TPM2_START_FIFO ||
+ if (sm == ACPI_TPM2_COMMAND_BUFFER || sm == ACPI_TPM2_MEMORY_MAPPED ||
!strcmp(acpi_device_hid(device), "MSFT0101"))
priv->flags |= CRB_FL_CRB_START;
- if (sm == TPM2_START_ACPI || sm == TPM2_START_CRB_WITH_ACPI)
+ if (sm == ACPI_TPM2_START_METHOD ||
+ sm == ACPI_TPM2_COMMAND_BUFFER_WITH_START_METHOD)
priv->flags |= CRB_FL_ACPI_START;
priv->cca = (struct crb_control_area __iomem *)
- devm_ioremap_nocache(dev, buf->control_area_pa, 0x1000);
+ devm_ioremap_nocache(dev, buf->control_address, 0x1000);
if (!priv->cca) {
dev_err(dev, "ioremap of the control area failed\n");
return -ENOMEM;