diff options
Diffstat (limited to 'src/security/tpm/tis.h')
| -rw-r--r-- | src/security/tpm/tis.h | 34 |
1 files changed, 21 insertions, 13 deletions
diff --git a/src/security/tpm/tis.h b/src/security/tpm/tis.h index df39498462..9b343330e3 100644 --- a/src/security/tpm/tis.h +++ b/src/security/tpm/tis.h @@ -32,6 +32,25 @@ enum tis_status { }; /* + * tis_init() + * + * Initialize the TPM device. Returns 0 on success or -1 on + * failure (in case device probing did not succeed). + */ +int tis_init(void); + +/* + * tis_open() + * + * Requests access to locality 0 for the caller. + * + * Returns 0 on success, -1 on failure. + */ +int tis_open(void); + +/* + * tis_sendrecv() + * * Send the requested data to the TPM and then try to get its response * * @sendbuf - buffer of the data to send @@ -42,19 +61,8 @@ enum tis_status { * Returns 0 on success (and places the number of response bytes at recv_len) * or -1 on failure. */ -typedef int (*tis_sendrecv_fn)(const u8 *sendbuf, size_t send_size, u8 *recvbuf, - size_t *recv_len); - -/* - * tis_probe() - * - * Probe for the TPM device and set it up for use within locality 0. Returns - * pointer to send-receive function on success or NULL on failure. - * - * Do not call this explicitly, it's meant to be used exclusively by TSS - * implementation (tlcl_lib_init() function to be specific). - */ -tis_sendrecv_fn tis_probe(void); +int tis_sendrecv(const u8 *sendbuf, size_t send_size, u8 *recvbuf, + size_t *recv_len); /* TODO: This is supposed to be used only for Google TPM. Consider moving this to drivers/tpm/cr50.h. */ |