2 * Copyright (c) 2011 The Chromium OS Authors.
4 * SPDX-License-Identifier: GPL-2.0+
14 /* Low-level interface to access TPM */
19 * Initialize the TPM device. Returns 0 on success or -1 on
20 * failure (in case device probing did not succeed).
27 * Requests access to locality 0 for the caller. After all commands have been
28 * completed the caller is supposed to call tis_close().
30 * Returns 0 on success, -1 on failure.
37 * terminate the currect session with the TPM by releasing the locked
38 * locality. Returns 0 on success of -1 on failure (in case lock
39 * removal did not succeed).
46 * Send the requested data to the TPM and then try to get its response
48 * @sendbuf - buffer of the data to send
49 * @send_size size of the data to send
50 * @recvbuf - memory to save the response to
51 * @recv_len - pointer to the size of the response buffer
53 * Returns 0 on success (and places the number of response bytes at recv_len)
56 int tis_sendrecv(const uint8_t *sendbuf, size_t send_size, uint8_t *recvbuf,