2013-02-27 18:47:53 +01:00
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/*
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* passthrough TPM driver
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*
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* Copyright (c) 2010 - 2013 IBM Corporation
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* Authors:
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* Stefan Berger <stefanb@us.ibm.com>
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*
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* Copyright (C) 2011 IAIK, Graz University of Technology
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* Author: Andreas Niederl
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>
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*/
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2013-02-27 18:47:54 +01:00
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#include <dirent.h>
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2013-02-27 18:47:53 +01:00
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#include "qemu-common.h"
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#include "qapi/error.h"
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2015-03-17 18:29:20 +01:00
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#include "qemu/error-report.h"
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2013-02-27 18:47:53 +01:00
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#include "qemu/sockets.h"
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2013-04-08 16:55:25 +02:00
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#include "sysemu/tpm_backend.h"
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2013-02-27 18:47:53 +01:00
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#include "tpm_int.h"
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#include "hw/hw.h"
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2013-02-05 17:06:20 +01:00
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#include "hw/i386/pc.h"
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2013-04-02 18:28:41 +02:00
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#include "sysemu/tpm_backend_int.h"
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2013-02-27 18:47:53 +01:00
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#include "tpm_tis.h"
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2015-05-26 22:51:06 +02:00
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#include "tpm_util.h"
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2013-02-27 18:47:53 +01:00
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2015-03-31 20:49:10 +02:00
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#define DEBUG_TPM 0
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#define DPRINTF(fmt, ...) do { \
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if (DEBUG_TPM) { \
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fprintf(stderr, fmt, ## __VA_ARGS__); \
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} \
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} while (0);
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2013-02-27 18:47:53 +01:00
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2013-03-28 12:26:21 +01:00
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#define TYPE_TPM_PASSTHROUGH "tpm-passthrough"
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#define TPM_PASSTHROUGH(obj) \
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OBJECT_CHECK(TPMPassthruState, (obj), TYPE_TPM_PASSTHROUGH)
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2013-02-27 18:47:53 +01:00
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2013-04-02 18:28:41 +02:00
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static const TPMDriverOps tpm_passthrough_driver;
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2013-03-28 12:26:21 +01:00
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/* data structures */
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2013-02-27 18:47:53 +01:00
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typedef struct TPMPassthruThreadParams {
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TPMState *tpm_state;
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TPMRecvDataCB *recv_data_callback;
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TPMBackend *tb;
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} TPMPassthruThreadParams;
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struct TPMPassthruState {
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2013-03-28 12:26:21 +01:00
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TPMBackend parent;
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2013-02-27 18:47:53 +01:00
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TPMBackendThread tbt;
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TPMPassthruThreadParams tpm_thread_params;
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char *tpm_dev;
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int tpm_fd;
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2013-02-27 18:47:54 +01:00
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bool tpm_executing;
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bool tpm_op_canceled;
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int cancel_fd;
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2013-02-27 18:47:53 +01:00
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bool had_startup_error;
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2015-05-26 22:51:06 +02:00
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TPMVersion tpm_version;
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2013-02-27 18:47:53 +01:00
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};
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2013-03-28 12:26:21 +01:00
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typedef struct TPMPassthruState TPMPassthruState;
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2013-02-27 18:47:53 +01:00
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#define TPM_PASSTHROUGH_DEFAULT_DEVICE "/dev/tpm0"
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2013-02-27 18:47:54 +01:00
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/* functions */
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static void tpm_passthrough_cancel_cmd(TPMBackend *tb);
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2013-02-27 18:47:53 +01:00
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static int tpm_passthrough_unix_write(int fd, const uint8_t *buf, uint32_t len)
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{
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return send_all(fd, buf, len);
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}
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static int tpm_passthrough_unix_read(int fd, uint8_t *buf, uint32_t len)
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{
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return recv_all(fd, buf, len, true);
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}
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static uint32_t tpm_passthrough_get_size_from_buffer(const uint8_t *buf)
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{
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struct tpm_resp_hdr *resp = (struct tpm_resp_hdr *)buf;
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return be32_to_cpu(resp->len);
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}
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2013-04-02 18:28:41 +02:00
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/*
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* Write an error message in the given output buffer.
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*/
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static void tpm_write_fatal_error_response(uint8_t *out, uint32_t out_len)
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{
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if (out_len >= sizeof(struct tpm_resp_hdr)) {
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struct tpm_resp_hdr *resp = (struct tpm_resp_hdr *)out;
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resp->tag = cpu_to_be16(TPM_TAG_RSP_COMMAND);
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resp->len = cpu_to_be32(sizeof(struct tpm_resp_hdr));
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resp->errcode = cpu_to_be32(TPM_FAIL);
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}
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}
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2015-02-23 15:27:19 +01:00
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static bool tpm_passthrough_is_selftest(const uint8_t *in, uint32_t in_len)
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{
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struct tpm_req_hdr *hdr = (struct tpm_req_hdr *)in;
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if (in_len >= sizeof(*hdr)) {
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return (be32_to_cpu(hdr->ordinal) == TPM_ORD_ContinueSelfTest);
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}
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return false;
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}
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2013-02-27 18:47:54 +01:00
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static int tpm_passthrough_unix_tx_bufs(TPMPassthruState *tpm_pt,
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2013-02-27 18:47:53 +01:00
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const uint8_t *in, uint32_t in_len,
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2015-02-23 15:27:19 +01:00
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uint8_t *out, uint32_t out_len,
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bool *selftest_done)
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2013-02-27 18:47:53 +01:00
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{
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int ret;
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2015-02-23 15:27:19 +01:00
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bool is_selftest;
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const struct tpm_resp_hdr *hdr;
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2013-02-27 18:47:53 +01:00
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2013-02-27 18:47:54 +01:00
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tpm_pt->tpm_op_canceled = false;
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tpm_pt->tpm_executing = true;
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2015-02-23 15:27:19 +01:00
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*selftest_done = false;
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is_selftest = tpm_passthrough_is_selftest(in, in_len);
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2013-02-27 18:47:54 +01:00
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ret = tpm_passthrough_unix_write(tpm_pt->tpm_fd, in, in_len);
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2013-02-27 18:47:53 +01:00
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if (ret != in_len) {
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2013-02-27 18:47:54 +01:00
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if (!tpm_pt->tpm_op_canceled ||
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(tpm_pt->tpm_op_canceled && errno != ECANCELED)) {
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error_report("tpm_passthrough: error while transmitting data "
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2015-02-25 05:22:35 +01:00
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"to TPM: %s (%i)",
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2013-02-27 18:47:54 +01:00
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strerror(errno), errno);
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}
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2013-02-27 18:47:53 +01:00
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goto err_exit;
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}
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2013-02-27 18:47:54 +01:00
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tpm_pt->tpm_executing = false;
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ret = tpm_passthrough_unix_read(tpm_pt->tpm_fd, out, out_len);
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2013-02-27 18:47:53 +01:00
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if (ret < 0) {
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2013-02-27 18:47:54 +01:00
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if (!tpm_pt->tpm_op_canceled ||
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(tpm_pt->tpm_op_canceled && errno != ECANCELED)) {
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error_report("tpm_passthrough: error while reading data from "
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2015-02-25 05:22:35 +01:00
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"TPM: %s (%i)",
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2013-02-27 18:47:54 +01:00
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strerror(errno), errno);
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}
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2013-02-27 18:47:53 +01:00
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} else if (ret < sizeof(struct tpm_resp_hdr) ||
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tpm_passthrough_get_size_from_buffer(out) != ret) {
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ret = -1;
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error_report("tpm_passthrough: received invalid response "
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2015-02-25 05:22:35 +01:00
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"packet from TPM");
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2013-02-27 18:47:53 +01:00
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}
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2015-02-23 15:27:19 +01:00
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if (is_selftest && (ret >= sizeof(struct tpm_resp_hdr))) {
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hdr = (struct tpm_resp_hdr *)out;
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*selftest_done = (be32_to_cpu(hdr->errcode) == 0);
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}
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2013-02-27 18:47:53 +01:00
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err_exit:
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if (ret < 0) {
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tpm_write_fatal_error_response(out, out_len);
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}
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2013-02-27 18:47:54 +01:00
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tpm_pt->tpm_executing = false;
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2013-02-27 18:47:53 +01:00
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return ret;
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}
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2013-02-27 18:47:54 +01:00
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static int tpm_passthrough_unix_transfer(TPMPassthruState *tpm_pt,
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2015-02-23 15:27:19 +01:00
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const TPMLocality *locty_data,
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bool *selftest_done)
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2013-02-27 18:47:53 +01:00
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{
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2013-02-27 18:47:54 +01:00
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return tpm_passthrough_unix_tx_bufs(tpm_pt,
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2013-02-27 18:47:53 +01:00
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locty_data->w_buffer.buffer,
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locty_data->w_offset,
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locty_data->r_buffer.buffer,
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2015-02-23 15:27:19 +01:00
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locty_data->r_buffer.size,
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selftest_done);
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2013-02-27 18:47:53 +01:00
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}
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static void tpm_passthrough_worker_thread(gpointer data,
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gpointer user_data)
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{
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TPMPassthruThreadParams *thr_parms = user_data;
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2013-03-28 12:26:21 +01:00
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TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(thr_parms->tb);
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2013-02-27 18:47:53 +01:00
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TPMBackendCmd cmd = (TPMBackendCmd)data;
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2015-02-23 15:27:19 +01:00
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bool selftest_done = false;
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2013-02-27 18:47:53 +01:00
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DPRINTF("tpm_passthrough: processing command type %d\n", cmd);
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switch (cmd) {
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case TPM_BACKEND_CMD_PROCESS_CMD:
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2013-02-27 18:47:54 +01:00
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tpm_passthrough_unix_transfer(tpm_pt,
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2015-02-23 15:27:19 +01:00
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thr_parms->tpm_state->locty_data,
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&selftest_done);
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2013-02-27 18:47:53 +01:00
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thr_parms->recv_data_callback(thr_parms->tpm_state,
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2015-02-23 15:27:19 +01:00
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thr_parms->tpm_state->locty_number,
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selftest_done);
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2013-02-27 18:47:53 +01:00
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break;
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case TPM_BACKEND_CMD_INIT:
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case TPM_BACKEND_CMD_END:
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case TPM_BACKEND_CMD_TPM_RESET:
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/* nothing to do */
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break;
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}
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}
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/*
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* Start the TPM (thread). If it had been started before, then terminate
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* and start it again.
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*/
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static int tpm_passthrough_startup_tpm(TPMBackend *tb)
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{
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2013-03-28 12:26:21 +01:00
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TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
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2013-02-27 18:47:53 +01:00
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/* terminate a running TPM */
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tpm_backend_thread_end(&tpm_pt->tbt);
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tpm_backend_thread_create(&tpm_pt->tbt,
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tpm_passthrough_worker_thread,
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2013-03-28 12:26:21 +01:00
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&tpm_pt->tpm_thread_params);
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2013-02-27 18:47:53 +01:00
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return 0;
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}
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static void tpm_passthrough_reset(TPMBackend *tb)
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{
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2013-03-28 12:26:21 +01:00
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TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
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2013-02-27 18:47:53 +01:00
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DPRINTF("tpm_passthrough: CALL TO TPM_RESET!\n");
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2013-02-27 18:47:54 +01:00
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tpm_passthrough_cancel_cmd(tb);
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2013-02-27 18:47:53 +01:00
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tpm_backend_thread_end(&tpm_pt->tbt);
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tpm_pt->had_startup_error = false;
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}
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static int tpm_passthrough_init(TPMBackend *tb, TPMState *s,
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TPMRecvDataCB *recv_data_cb)
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{
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2013-03-28 12:26:21 +01:00
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TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
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2013-02-27 18:47:53 +01:00
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tpm_pt->tpm_thread_params.tpm_state = s;
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tpm_pt->tpm_thread_params.recv_data_callback = recv_data_cb;
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tpm_pt->tpm_thread_params.tb = tb;
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return 0;
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}
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static bool tpm_passthrough_get_tpm_established_flag(TPMBackend *tb)
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{
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return false;
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}
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|
2015-05-26 22:51:05 +02:00
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static int tpm_passthrough_reset_tpm_established_flag(TPMBackend *tb,
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uint8_t locty)
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{
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/* only a TPM 2.0 will support this */
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return 0;
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}
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2013-02-27 18:47:53 +01:00
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static bool tpm_passthrough_get_startup_error(TPMBackend *tb)
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{
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2013-03-28 12:26:21 +01:00
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TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
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2013-02-27 18:47:53 +01:00
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return tpm_pt->had_startup_error;
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}
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static size_t tpm_passthrough_realloc_buffer(TPMSizedBuffer *sb)
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{
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size_t wanted_size = 4096; /* Linux tpm.c buffer size */
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if (sb->size != wanted_size) {
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sb->buffer = g_realloc(sb->buffer, wanted_size);
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sb->size = wanted_size;
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}
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return sb->size;
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}
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static void tpm_passthrough_deliver_request(TPMBackend *tb)
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{
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2013-03-28 12:26:21 +01:00
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|
TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
|
2013-02-27 18:47:53 +01:00
|
|
|
|
|
|
|
tpm_backend_thread_deliver_request(&tpm_pt->tbt);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void tpm_passthrough_cancel_cmd(TPMBackend *tb)
|
|
|
|
{
|
2013-03-28 12:26:21 +01:00
|
|
|
TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
|
2013-02-27 18:47:54 +01:00
|
|
|
int n;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* As of Linux 3.7 the tpm_tis driver does not properly cancel
|
|
|
|
* commands on all TPM manufacturers' TPMs.
|
|
|
|
* Only cancel if we're busy so we don't cancel someone else's
|
|
|
|
* command, e.g., a command executed on the host.
|
|
|
|
*/
|
|
|
|
if (tpm_pt->tpm_executing) {
|
|
|
|
if (tpm_pt->cancel_fd >= 0) {
|
|
|
|
n = write(tpm_pt->cancel_fd, "-", 1);
|
|
|
|
if (n != 1) {
|
2015-02-25 05:22:35 +01:00
|
|
|
error_report("Canceling TPM command failed: %s",
|
2013-02-27 18:47:54 +01:00
|
|
|
strerror(errno));
|
|
|
|
} else {
|
|
|
|
tpm_pt->tpm_op_canceled = true;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
error_report("Cannot cancel TPM command due to missing "
|
|
|
|
"TPM sysfs cancel entry");
|
|
|
|
}
|
|
|
|
}
|
2013-02-27 18:47:53 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
static const char *tpm_passthrough_create_desc(void)
|
|
|
|
{
|
|
|
|
return "Passthrough TPM backend driver";
|
|
|
|
}
|
|
|
|
|
2015-05-26 22:51:05 +02:00
|
|
|
static TPMVersion tpm_passthrough_get_tpm_version(TPMBackend *tb)
|
|
|
|
{
|
2015-05-26 22:51:06 +02:00
|
|
|
TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
|
2013-02-27 18:47:53 +01:00
|
|
|
|
2015-05-26 22:51:06 +02:00
|
|
|
return tpm_pt->tpm_version;
|
2013-02-27 18:47:53 +01:00
|
|
|
}
|
|
|
|
|
2013-02-27 18:47:54 +01:00
|
|
|
/*
|
|
|
|
* Unless path or file descriptor set has been provided by user,
|
|
|
|
* determine the sysfs cancel file following kernel documentation
|
|
|
|
* in Documentation/ABI/stable/sysfs-class-tpm.
|
2013-04-16 23:08:36 +02:00
|
|
|
* From /dev/tpm0 create /sys/class/misc/tpm0/device/cancel
|
2013-02-27 18:47:54 +01:00
|
|
|
*/
|
|
|
|
static int tpm_passthrough_open_sysfs_cancel(TPMBackend *tb)
|
|
|
|
{
|
2013-04-16 23:08:36 +02:00
|
|
|
TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
|
2013-02-27 18:47:54 +01:00
|
|
|
int fd = -1;
|
2013-04-16 23:08:36 +02:00
|
|
|
char *dev;
|
2013-02-27 18:47:54 +01:00
|
|
|
char path[PATH_MAX];
|
|
|
|
|
|
|
|
if (tb->cancel_path) {
|
|
|
|
fd = qemu_open(tb->cancel_path, O_WRONLY);
|
|
|
|
if (fd < 0) {
|
|
|
|
error_report("Could not open TPM cancel path : %s",
|
|
|
|
strerror(errno));
|
|
|
|
}
|
|
|
|
return fd;
|
|
|
|
}
|
|
|
|
|
2013-04-16 23:08:36 +02:00
|
|
|
dev = strrchr(tpm_pt->tpm_dev, '/');
|
|
|
|
if (dev) {
|
|
|
|
dev++;
|
|
|
|
if (snprintf(path, sizeof(path), "/sys/class/misc/%s/device/cancel",
|
|
|
|
dev) < sizeof(path)) {
|
2013-02-27 18:47:54 +01:00
|
|
|
fd = qemu_open(path, O_WRONLY);
|
2013-04-16 23:08:36 +02:00
|
|
|
if (fd >= 0) {
|
|
|
|
tb->cancel_path = g_strdup(path);
|
|
|
|
} else {
|
|
|
|
error_report("tpm_passthrough: Could not open TPM cancel "
|
|
|
|
"path %s : %s", path, strerror(errno));
|
|
|
|
}
|
2013-02-27 18:47:54 +01:00
|
|
|
}
|
2013-04-16 23:08:36 +02:00
|
|
|
} else {
|
|
|
|
error_report("tpm_passthrough: Bad TPM device path %s",
|
|
|
|
tpm_pt->tpm_dev);
|
2013-02-27 18:47:54 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
return fd;
|
|
|
|
}
|
|
|
|
|
2013-02-27 18:47:53 +01:00
|
|
|
static int tpm_passthrough_handle_device_opts(QemuOpts *opts, TPMBackend *tb)
|
|
|
|
{
|
2013-03-28 12:26:21 +01:00
|
|
|
TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
|
2013-02-27 18:47:53 +01:00
|
|
|
const char *value;
|
|
|
|
|
2013-02-27 18:47:54 +01:00
|
|
|
value = qemu_opt_get(opts, "cancel-path");
|
2014-12-04 10:26:55 +01:00
|
|
|
tb->cancel_path = g_strdup(value);
|
2013-02-27 18:47:54 +01:00
|
|
|
|
2013-02-27 18:47:53 +01:00
|
|
|
value = qemu_opt_get(opts, "path");
|
|
|
|
if (!value) {
|
|
|
|
value = TPM_PASSTHROUGH_DEFAULT_DEVICE;
|
|
|
|
}
|
|
|
|
|
2013-03-28 12:26:21 +01:00
|
|
|
tpm_pt->tpm_dev = g_strdup(value);
|
2013-02-27 18:47:53 +01:00
|
|
|
|
2013-03-28 12:26:21 +01:00
|
|
|
tb->path = g_strdup(tpm_pt->tpm_dev);
|
2013-02-27 18:47:53 +01:00
|
|
|
|
2013-03-28 12:26:21 +01:00
|
|
|
tpm_pt->tpm_fd = qemu_open(tpm_pt->tpm_dev, O_RDWR);
|
|
|
|
if (tpm_pt->tpm_fd < 0) {
|
2015-02-25 05:22:35 +01:00
|
|
|
error_report("Cannot access TPM device using '%s': %s",
|
2013-03-28 12:26:21 +01:00
|
|
|
tpm_pt->tpm_dev, strerror(errno));
|
2013-02-27 18:47:53 +01:00
|
|
|
goto err_free_parameters;
|
|
|
|
}
|
|
|
|
|
2015-05-26 22:51:06 +02:00
|
|
|
if (tpm_util_test_tpmdev(tpm_pt->tpm_fd, &tpm_pt->tpm_version)) {
|
2015-02-25 05:22:35 +01:00
|
|
|
error_report("'%s' is not a TPM device.",
|
2013-03-28 12:26:21 +01:00
|
|
|
tpm_pt->tpm_dev);
|
2013-02-27 18:47:53 +01:00
|
|
|
goto err_close_tpmdev;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_close_tpmdev:
|
2013-03-28 12:26:21 +01:00
|
|
|
qemu_close(tpm_pt->tpm_fd);
|
|
|
|
tpm_pt->tpm_fd = -1;
|
2013-02-27 18:47:53 +01:00
|
|
|
|
|
|
|
err_free_parameters:
|
|
|
|
g_free(tb->path);
|
|
|
|
tb->path = NULL;
|
|
|
|
|
2013-03-28 12:26:21 +01:00
|
|
|
g_free(tpm_pt->tpm_dev);
|
|
|
|
tpm_pt->tpm_dev = NULL;
|
2013-02-27 18:47:53 +01:00
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static TPMBackend *tpm_passthrough_create(QemuOpts *opts, const char *id)
|
|
|
|
{
|
2013-03-28 12:26:21 +01:00
|
|
|
Object *obj = object_new(TYPE_TPM_PASSTHROUGH);
|
|
|
|
TPMBackend *tb = TPM_BACKEND(obj);
|
|
|
|
TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
|
2013-02-27 18:47:53 +01:00
|
|
|
|
|
|
|
tb->id = g_strdup(id);
|
|
|
|
/* let frontend set the fe_model to proper value */
|
|
|
|
tb->fe_model = -1;
|
|
|
|
|
|
|
|
tb->ops = &tpm_passthrough_driver;
|
|
|
|
|
|
|
|
if (tpm_passthrough_handle_device_opts(opts, tb)) {
|
|
|
|
goto err_exit;
|
|
|
|
}
|
|
|
|
|
2013-03-28 12:26:21 +01:00
|
|
|
tpm_pt->cancel_fd = tpm_passthrough_open_sysfs_cancel(tb);
|
|
|
|
if (tpm_pt->cancel_fd < 0) {
|
2013-02-27 18:47:54 +01:00
|
|
|
goto err_exit;
|
|
|
|
}
|
|
|
|
|
2013-02-27 18:47:53 +01:00
|
|
|
return tb;
|
|
|
|
|
|
|
|
err_exit:
|
|
|
|
g_free(tb->id);
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void tpm_passthrough_destroy(TPMBackend *tb)
|
|
|
|
{
|
2013-03-28 12:26:21 +01:00
|
|
|
TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
|
2013-02-27 18:47:53 +01:00
|
|
|
|
2013-02-27 18:47:54 +01:00
|
|
|
tpm_passthrough_cancel_cmd(tb);
|
|
|
|
|
2013-02-27 18:47:53 +01:00
|
|
|
tpm_backend_thread_end(&tpm_pt->tbt);
|
|
|
|
|
|
|
|
qemu_close(tpm_pt->tpm_fd);
|
2013-03-28 12:26:21 +01:00
|
|
|
qemu_close(tpm_pt->cancel_fd);
|
2013-02-27 18:47:53 +01:00
|
|
|
|
|
|
|
g_free(tb->id);
|
|
|
|
g_free(tb->path);
|
2013-02-27 18:47:54 +01:00
|
|
|
g_free(tb->cancel_path);
|
2013-03-28 12:26:21 +01:00
|
|
|
g_free(tpm_pt->tpm_dev);
|
2013-02-27 18:47:53 +01:00
|
|
|
}
|
|
|
|
|
2013-04-22 16:41:39 +02:00
|
|
|
static const QemuOptDesc tpm_passthrough_cmdline_opts[] = {
|
|
|
|
TPM_STANDARD_CMDLINE_OPTS,
|
|
|
|
{
|
|
|
|
.name = "cancel-path",
|
|
|
|
.type = QEMU_OPT_STRING,
|
|
|
|
.help = "Sysfs file entry for canceling TPM commands",
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.name = "path",
|
|
|
|
.type = QEMU_OPT_STRING,
|
|
|
|
.help = "Path to TPM device on the host",
|
|
|
|
},
|
|
|
|
{ /* end of list */ },
|
|
|
|
};
|
|
|
|
|
2013-04-02 18:28:41 +02:00
|
|
|
static const TPMDriverOps tpm_passthrough_driver = {
|
2013-02-27 18:47:53 +01:00
|
|
|
.type = TPM_TYPE_PASSTHROUGH,
|
2013-04-22 16:41:39 +02:00
|
|
|
.opts = tpm_passthrough_cmdline_opts,
|
2013-02-27 18:47:53 +01:00
|
|
|
.desc = tpm_passthrough_create_desc,
|
|
|
|
.create = tpm_passthrough_create,
|
|
|
|
.destroy = tpm_passthrough_destroy,
|
|
|
|
.init = tpm_passthrough_init,
|
|
|
|
.startup_tpm = tpm_passthrough_startup_tpm,
|
|
|
|
.realloc_buffer = tpm_passthrough_realloc_buffer,
|
|
|
|
.reset = tpm_passthrough_reset,
|
|
|
|
.had_startup_error = tpm_passthrough_get_startup_error,
|
|
|
|
.deliver_request = tpm_passthrough_deliver_request,
|
|
|
|
.cancel_cmd = tpm_passthrough_cancel_cmd,
|
|
|
|
.get_tpm_established_flag = tpm_passthrough_get_tpm_established_flag,
|
2015-05-26 22:51:05 +02:00
|
|
|
.reset_tpm_established_flag = tpm_passthrough_reset_tpm_established_flag,
|
|
|
|
.get_tpm_version = tpm_passthrough_get_tpm_version,
|
2013-02-27 18:47:53 +01:00
|
|
|
};
|
|
|
|
|
2013-03-28 12:26:21 +01:00
|
|
|
static void tpm_passthrough_inst_init(Object *obj)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
static void tpm_passthrough_inst_finalize(Object *obj)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
static void tpm_passthrough_class_init(ObjectClass *klass, void *data)
|
|
|
|
{
|
|
|
|
TPMBackendClass *tbc = TPM_BACKEND_CLASS(klass);
|
|
|
|
|
|
|
|
tbc->ops = &tpm_passthrough_driver;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const TypeInfo tpm_passthrough_info = {
|
|
|
|
.name = TYPE_TPM_PASSTHROUGH,
|
|
|
|
.parent = TYPE_TPM_BACKEND,
|
|
|
|
.instance_size = sizeof(TPMPassthruState),
|
|
|
|
.class_init = tpm_passthrough_class_init,
|
|
|
|
.instance_init = tpm_passthrough_inst_init,
|
|
|
|
.instance_finalize = tpm_passthrough_inst_finalize,
|
|
|
|
};
|
|
|
|
|
2013-02-27 18:47:53 +01:00
|
|
|
static void tpm_passthrough_register(void)
|
|
|
|
{
|
2013-03-28 12:26:21 +01:00
|
|
|
type_register_static(&tpm_passthrough_info);
|
2013-02-27 18:47:53 +01:00
|
|
|
tpm_register_driver(&tpm_passthrough_driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
type_init(tpm_passthrough_register)
|