The TPM subsystem does not have a full front-end/back-end separation.
The sole available backend, tpm_passthrough, depends on the data
structures of the sole available frontend, tpm_tis.
However, we can at least try to split the user interface (tpm.c) from the
implementation (hw/tpm). The patches makes tpm.c not include tpm_int.h,
which is shared between tpm_tis.c and tpm_passthrough.c; instead it
moves more stuff to tpm_backend.h.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
common-obj-y += dma-helpers.o
common-obj-y += vl.o
-common-obj-y += tpm/
+common-obj-y += tpm.o
common-obj-$(CONFIG_SLIRP) += slirp/
*/
#include "backends/tpm.h"
-#include "tpm/tpm_int.h"
#include "qapi/qmp/qerror.h"
+#include "sysemu/tpm.h"
+#include "qemu/thread.h"
+#include "sysemu/tpm_backend_int.h"
enum TpmType tpm_backend_get_type(TPMBackend *s)
{
NULL);
}
+void tpm_backend_thread_deliver_request(TPMBackendThread *tbt)
+{
+ g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_PROCESS_CMD, NULL);
+}
+
+void tpm_backend_thread_create(TPMBackendThread *tbt,
+ GFunc func, gpointer user_data)
+{
+ if (!tbt->pool) {
+ tbt->pool = g_thread_pool_new(func, user_data, 1, TRUE, NULL);
+ g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_INIT, NULL);
+ }
+}
+
+void tpm_backend_thread_end(TPMBackendThread *tbt)
+{
+ if (tbt->pool) {
+ g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_END, NULL);
+ g_thread_pool_free(tbt->pool, FALSE, TRUE);
+ tbt->pool = NULL;
+ }
+}
+
+void tpm_backend_thread_tpm_reset(TPMBackendThread *tbt,
+ GFunc func, gpointer user_data)
+{
+ if (!tbt->pool) {
+ tpm_backend_thread_create(tbt, func, user_data);
+ } else {
+ g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_TPM_RESET,
+ NULL);
+ }
+}
+
static const TypeInfo tpm_backend_info = {
.name = TYPE_TPM_BACKEND,
.parent = TYPE_OBJECT,
devices-dirs-$(CONFIG_SOFTMMU) += sd/
devices-dirs-$(CONFIG_SOFTMMU) += ssi/
devices-dirs-$(CONFIG_SOFTMMU) += timer/
+devices-dirs-$(CONFIG_TPM) += tpm/
devices-dirs-$(CONFIG_SOFTMMU) += usb/
devices-dirs-$(CONFIG_SOFTMMU) += virtio/
devices-dirs-$(CONFIG_SOFTMMU) += watchdog/
--- /dev/null
+common-obj-$(CONFIG_TPM_TIS) += tpm_tis.o
+common-obj-$(CONFIG_TPM_PASSTHROUGH) += tpm_passthrough.o
--- /dev/null
+/*
+ * TPM configuration
+ *
+ * Copyright (C) 2011-2013 IBM Corporation
+ *
+ * Authors:
+ * Stefan Berger <stefanb@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#ifndef TPM_TPM_INT_H
+#define TPM_TPM_INT_H
+
+#include "exec/memory.h"
+#include "tpm_tis.h"
+
+/* overall state of the TPM interface */
+struct TPMState {
+ ISADevice busdev;
+ MemoryRegion mmio;
+
+ union {
+ TPMTISEmuState tis;
+ } s;
+
+ uint8_t locty_number;
+ TPMLocality *locty_data;
+
+ char *backend;
+ TPMBackend *be_driver;
+};
+
+#define TPM(obj) OBJECT_CHECK(TPMState, (obj), TYPE_TPM_TIS)
+
+struct tpm_req_hdr {
+ uint16_t tag;
+ uint32_t len;
+ uint32_t ordinal;
+} QEMU_PACKED;
+
+struct tpm_resp_hdr {
+ uint16_t tag;
+ uint32_t len;
+ uint32_t errcode;
+} QEMU_PACKED;
+
+#define TPM_TAG_RQU_COMMAND 0xc1
+#define TPM_TAG_RQU_AUTH1_COMMAND 0xc2
+#define TPM_TAG_RQU_AUTH2_COMMAND 0xc3
+
+#define TPM_TAG_RSP_COMMAND 0xc4
+#define TPM_TAG_RSP_AUTH1_COMMAND 0xc5
+#define TPM_TAG_RSP_AUTH2_COMMAND 0xc6
+
+#define TPM_FAIL 9
+
+#define TPM_ORD_GetTicks 0xf1
+
+#endif /* TPM_TPM_INT_H */
--- /dev/null
+/*
+ * passthrough TPM driver
+ *
+ * Copyright (c) 2010 - 2013 IBM Corporation
+ * Authors:
+ * Stefan Berger <stefanb@us.ibm.com>
+ *
+ * Copyright (C) 2011 IAIK, Graz University of Technology
+ * Author: Andreas Niederl
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>
+ */
+
+#include <dirent.h>
+
+#include "qemu-common.h"
+#include "qapi/error.h"
+#include "qemu/sockets.h"
+#include "backends/tpm.h"
+#include "tpm_int.h"
+#include "hw/hw.h"
+#include "hw/i386/pc.h"
+#include "sysemu/tpm_backend_int.h"
+#include "tpm_tis.h"
+
+/* #define DEBUG_TPM */
+
+#ifdef DEBUG_TPM
+#define DPRINTF(fmt, ...) \
+ do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
+#else
+#define DPRINTF(fmt, ...) \
+ do { } while (0)
+#endif
+
+#define TYPE_TPM_PASSTHROUGH "tpm-passthrough"
+#define TPM_PASSTHROUGH(obj) \
+ OBJECT_CHECK(TPMPassthruState, (obj), TYPE_TPM_PASSTHROUGH)
+
+static const TPMDriverOps tpm_passthrough_driver;
+
+/* data structures */
+typedef struct TPMPassthruThreadParams {
+ TPMState *tpm_state;
+
+ TPMRecvDataCB *recv_data_callback;
+ TPMBackend *tb;
+} TPMPassthruThreadParams;
+
+struct TPMPassthruState {
+ TPMBackend parent;
+
+ TPMBackendThread tbt;
+
+ TPMPassthruThreadParams tpm_thread_params;
+
+ char *tpm_dev;
+ int tpm_fd;
+ bool tpm_executing;
+ bool tpm_op_canceled;
+ int cancel_fd;
+ bool had_startup_error;
+};
+
+typedef struct TPMPassthruState TPMPassthruState;
+
+#define TPM_PASSTHROUGH_DEFAULT_DEVICE "/dev/tpm0"
+
+/* functions */
+
+static void tpm_passthrough_cancel_cmd(TPMBackend *tb);
+
+static int tpm_passthrough_unix_write(int fd, const uint8_t *buf, uint32_t len)
+{
+ return send_all(fd, buf, len);
+}
+
+static int tpm_passthrough_unix_read(int fd, uint8_t *buf, uint32_t len)
+{
+ return recv_all(fd, buf, len, true);
+}
+
+static uint32_t tpm_passthrough_get_size_from_buffer(const uint8_t *buf)
+{
+ struct tpm_resp_hdr *resp = (struct tpm_resp_hdr *)buf;
+
+ return be32_to_cpu(resp->len);
+}
+
+/*
+ * Write an error message in the given output buffer.
+ */
+static void tpm_write_fatal_error_response(uint8_t *out, uint32_t out_len)
+{
+ if (out_len >= sizeof(struct tpm_resp_hdr)) {
+ struct tpm_resp_hdr *resp = (struct tpm_resp_hdr *)out;
+
+ resp->tag = cpu_to_be16(TPM_TAG_RSP_COMMAND);
+ resp->len = cpu_to_be32(sizeof(struct tpm_resp_hdr));
+ resp->errcode = cpu_to_be32(TPM_FAIL);
+ }
+}
+
+static int tpm_passthrough_unix_tx_bufs(TPMPassthruState *tpm_pt,
+ const uint8_t *in, uint32_t in_len,
+ uint8_t *out, uint32_t out_len)
+{
+ int ret;
+
+ tpm_pt->tpm_op_canceled = false;
+ tpm_pt->tpm_executing = true;
+
+ ret = tpm_passthrough_unix_write(tpm_pt->tpm_fd, in, in_len);
+ if (ret != in_len) {
+ if (!tpm_pt->tpm_op_canceled ||
+ (tpm_pt->tpm_op_canceled && errno != ECANCELED)) {
+ error_report("tpm_passthrough: error while transmitting data "
+ "to TPM: %s (%i)\n",
+ strerror(errno), errno);
+ }
+ goto err_exit;
+ }
+
+ tpm_pt->tpm_executing = false;
+
+ ret = tpm_passthrough_unix_read(tpm_pt->tpm_fd, out, out_len);
+ if (ret < 0) {
+ if (!tpm_pt->tpm_op_canceled ||
+ (tpm_pt->tpm_op_canceled && errno != ECANCELED)) {
+ error_report("tpm_passthrough: error while reading data from "
+ "TPM: %s (%i)\n",
+ strerror(errno), errno);
+ }
+ } else if (ret < sizeof(struct tpm_resp_hdr) ||
+ tpm_passthrough_get_size_from_buffer(out) != ret) {
+ ret = -1;
+ error_report("tpm_passthrough: received invalid response "
+ "packet from TPM\n");
+ }
+
+err_exit:
+ if (ret < 0) {
+ tpm_write_fatal_error_response(out, out_len);
+ }
+
+ tpm_pt->tpm_executing = false;
+
+ return ret;
+}
+
+static int tpm_passthrough_unix_transfer(TPMPassthruState *tpm_pt,
+ const TPMLocality *locty_data)
+{
+ return tpm_passthrough_unix_tx_bufs(tpm_pt,
+ locty_data->w_buffer.buffer,
+ locty_data->w_offset,
+ locty_data->r_buffer.buffer,
+ locty_data->r_buffer.size);
+}
+
+static void tpm_passthrough_worker_thread(gpointer data,
+ gpointer user_data)
+{
+ TPMPassthruThreadParams *thr_parms = user_data;
+ TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(thr_parms->tb);
+ TPMBackendCmd cmd = (TPMBackendCmd)data;
+
+ DPRINTF("tpm_passthrough: processing command type %d\n", cmd);
+
+ switch (cmd) {
+ case TPM_BACKEND_CMD_PROCESS_CMD:
+ tpm_passthrough_unix_transfer(tpm_pt,
+ thr_parms->tpm_state->locty_data);
+
+ thr_parms->recv_data_callback(thr_parms->tpm_state,
+ thr_parms->tpm_state->locty_number);
+ break;
+ case TPM_BACKEND_CMD_INIT:
+ case TPM_BACKEND_CMD_END:
+ case TPM_BACKEND_CMD_TPM_RESET:
+ /* nothing to do */
+ break;
+ }
+}
+
+/*
+ * Start the TPM (thread). If it had been started before, then terminate
+ * and start it again.
+ */
+static int tpm_passthrough_startup_tpm(TPMBackend *tb)
+{
+ TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
+
+ /* terminate a running TPM */
+ tpm_backend_thread_end(&tpm_pt->tbt);
+
+ tpm_backend_thread_create(&tpm_pt->tbt,
+ tpm_passthrough_worker_thread,
+ &tpm_pt->tpm_thread_params);
+
+ return 0;
+}
+
+static void tpm_passthrough_reset(TPMBackend *tb)
+{
+ TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
+
+ DPRINTF("tpm_passthrough: CALL TO TPM_RESET!\n");
+
+ tpm_passthrough_cancel_cmd(tb);
+
+ tpm_backend_thread_end(&tpm_pt->tbt);
+
+ tpm_pt->had_startup_error = false;
+}
+
+static int tpm_passthrough_init(TPMBackend *tb, TPMState *s,
+ TPMRecvDataCB *recv_data_cb)
+{
+ TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
+
+ tpm_pt->tpm_thread_params.tpm_state = s;
+ tpm_pt->tpm_thread_params.recv_data_callback = recv_data_cb;
+ tpm_pt->tpm_thread_params.tb = tb;
+
+ return 0;
+}
+
+static bool tpm_passthrough_get_tpm_established_flag(TPMBackend *tb)
+{
+ return false;
+}
+
+static bool tpm_passthrough_get_startup_error(TPMBackend *tb)
+{
+ TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
+
+ return tpm_pt->had_startup_error;
+}
+
+static size_t tpm_passthrough_realloc_buffer(TPMSizedBuffer *sb)
+{
+ size_t wanted_size = 4096; /* Linux tpm.c buffer size */
+
+ if (sb->size != wanted_size) {
+ sb->buffer = g_realloc(sb->buffer, wanted_size);
+ sb->size = wanted_size;
+ }
+ return sb->size;
+}
+
+static void tpm_passthrough_deliver_request(TPMBackend *tb)
+{
+ TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
+
+ tpm_backend_thread_deliver_request(&tpm_pt->tbt);
+}
+
+static void tpm_passthrough_cancel_cmd(TPMBackend *tb)
+{
+ TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
+ 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) {
+ error_report("Canceling TPM command failed: %s\n",
+ strerror(errno));
+ } else {
+ tpm_pt->tpm_op_canceled = true;
+ }
+ } else {
+ error_report("Cannot cancel TPM command due to missing "
+ "TPM sysfs cancel entry");
+ }
+ }
+}
+
+static const char *tpm_passthrough_create_desc(void)
+{
+ return "Passthrough TPM backend driver";
+}
+
+/*
+ * A basic test of a TPM device. We expect a well formatted response header
+ * (error response is fine) within one second.
+ */
+static int tpm_passthrough_test_tpmdev(int fd)
+{
+ struct tpm_req_hdr req = {
+ .tag = cpu_to_be16(TPM_TAG_RQU_COMMAND),
+ .len = cpu_to_be32(sizeof(req)),
+ .ordinal = cpu_to_be32(TPM_ORD_GetTicks),
+ };
+ struct tpm_resp_hdr *resp;
+ fd_set readfds;
+ int n;
+ struct timeval tv = {
+ .tv_sec = 1,
+ .tv_usec = 0,
+ };
+ unsigned char buf[1024];
+
+ n = write(fd, &req, sizeof(req));
+ if (n < 0) {
+ return errno;
+ }
+ if (n != sizeof(req)) {
+ return EFAULT;
+ }
+
+ FD_ZERO(&readfds);
+ FD_SET(fd, &readfds);
+
+ /* wait for a second */
+ n = select(fd + 1, &readfds, NULL, NULL, &tv);
+ if (n != 1) {
+ return errno;
+ }
+
+ n = read(fd, &buf, sizeof(buf));
+ if (n < sizeof(struct tpm_resp_hdr)) {
+ return EFAULT;
+ }
+
+ resp = (struct tpm_resp_hdr *)buf;
+ /* check the header */
+ if (be16_to_cpu(resp->tag) != TPM_TAG_RSP_COMMAND ||
+ be32_to_cpu(resp->len) != n) {
+ return EBADMSG;
+ }
+
+ return 0;
+}
+
+/*
+ * Check whether the given base path, e.g., /sys/class/misc/tpm0/device,
+ * is the sysfs directory of a TPM. A TPM sysfs directory should be uniquely
+ * recognizable by the file entries 'pcrs' and 'cancel'.
+ * Upon success 'true' is returned and the basebath buffer has '/cancel'
+ * appended.
+ */
+static bool tpm_passthrough_check_sysfs_cancel(char *basepath, size_t bufsz)
+{
+ char path[PATH_MAX];
+ struct stat statbuf;
+
+ snprintf(path, sizeof(path), "%s/pcrs", basepath);
+ if (stat(path, &statbuf) == -1 || !S_ISREG(statbuf.st_mode)) {
+ return false;
+ }
+
+ snprintf(path, sizeof(path), "%s/cancel", basepath);
+ if (stat(path, &statbuf) == -1 || !S_ISREG(statbuf.st_mode)) {
+ return false;
+ }
+
+ strncpy(basepath, path, bufsz);
+
+ return true;
+}
+
+/*
+ * 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.
+ */
+static int tpm_passthrough_open_sysfs_cancel(TPMBackend *tb)
+{
+ int fd = -1;
+ unsigned int idx;
+ DIR *pnp_dir;
+ char path[PATH_MAX];
+ struct dirent entry, *result;
+ int len;
+
+ 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;
+ }
+
+ snprintf(path, sizeof(path), "/sys/class/misc");
+ pnp_dir = opendir(path);
+ if (pnp_dir != NULL) {
+ while (readdir_r(pnp_dir, &entry, &result) == 0 &&
+ result != NULL) {
+ /*
+ * only allow /sys/class/misc/tpm%u type of paths
+ */
+ if (sscanf(entry.d_name, "tpm%u%n", &idx, &len) < 1 ||
+ len <= strlen("tpm") ||
+ len != strlen(entry.d_name)) {
+ continue;
+ }
+
+ snprintf(path, sizeof(path), "/sys/class/misc/%s/device",
+ entry.d_name);
+ if (!tpm_passthrough_check_sysfs_cancel(path, sizeof(path))) {
+ continue;
+ }
+
+ fd = qemu_open(path, O_WRONLY);
+ break;
+ }
+ closedir(pnp_dir);
+ }
+
+ if (fd >= 0) {
+ tb->cancel_path = g_strdup(path);
+ }
+
+ return fd;
+}
+
+static int tpm_passthrough_handle_device_opts(QemuOpts *opts, TPMBackend *tb)
+{
+ TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
+ const char *value;
+
+ value = qemu_opt_get(opts, "cancel-path");
+ if (value) {
+ tb->cancel_path = g_strdup(value);
+ }
+
+ value = qemu_opt_get(opts, "path");
+ if (!value) {
+ value = TPM_PASSTHROUGH_DEFAULT_DEVICE;
+ }
+
+ tpm_pt->tpm_dev = g_strdup(value);
+
+ tb->path = g_strdup(tpm_pt->tpm_dev);
+
+ tpm_pt->tpm_fd = qemu_open(tpm_pt->tpm_dev, O_RDWR);
+ if (tpm_pt->tpm_fd < 0) {
+ error_report("Cannot access TPM device using '%s': %s\n",
+ tpm_pt->tpm_dev, strerror(errno));
+ goto err_free_parameters;
+ }
+
+ if (tpm_passthrough_test_tpmdev(tpm_pt->tpm_fd)) {
+ error_report("'%s' is not a TPM device.\n",
+ tpm_pt->tpm_dev);
+ goto err_close_tpmdev;
+ }
+
+ return 0;
+
+ err_close_tpmdev:
+ qemu_close(tpm_pt->tpm_fd);
+ tpm_pt->tpm_fd = -1;
+
+ err_free_parameters:
+ g_free(tb->path);
+ tb->path = NULL;
+
+ g_free(tpm_pt->tpm_dev);
+ tpm_pt->tpm_dev = NULL;
+
+ return 1;
+}
+
+static TPMBackend *tpm_passthrough_create(QemuOpts *opts, const char *id)
+{
+ Object *obj = object_new(TYPE_TPM_PASSTHROUGH);
+ TPMBackend *tb = TPM_BACKEND(obj);
+ TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
+
+ 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;
+ }
+
+ tpm_pt->cancel_fd = tpm_passthrough_open_sysfs_cancel(tb);
+ if (tpm_pt->cancel_fd < 0) {
+ goto err_exit;
+ }
+
+ return tb;
+
+err_exit:
+ g_free(tb->id);
+
+ return NULL;
+}
+
+static void tpm_passthrough_destroy(TPMBackend *tb)
+{
+ TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
+
+ tpm_passthrough_cancel_cmd(tb);
+
+ tpm_backend_thread_end(&tpm_pt->tbt);
+
+ qemu_close(tpm_pt->tpm_fd);
+ qemu_close(tpm_pt->cancel_fd);
+
+ g_free(tb->id);
+ g_free(tb->path);
+ g_free(tb->cancel_path);
+ g_free(tpm_pt->tpm_dev);
+}
+
+static const TPMDriverOps tpm_passthrough_driver = {
+ .type = TPM_TYPE_PASSTHROUGH,
+ .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,
+};
+
+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,
+};
+
+static void tpm_passthrough_register(void)
+{
+ type_register_static(&tpm_passthrough_info);
+ tpm_register_driver(&tpm_passthrough_driver);
+}
+
+type_init(tpm_passthrough_register)
--- /dev/null
+/*
+ * tpm_tis.c - QEMU's TPM TIS interface emulator
+ *
+ * Copyright (C) 2006,2010-2013 IBM Corporation
+ *
+ * Authors:
+ * Stefan Berger <stefanb@us.ibm.com>
+ * David Safford <safford@us.ibm.com>
+ *
+ * Xen 4 support: Andrease Niederl <andreas.niederl@iaik.tugraz.at>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ * Implementation of the TIS interface according to specs found at
+ * http://www.trustedcomputinggroup.org. This implementation currently
+ * supports version 1.21, revision 1.0.
+ * In the developers menu choose the PC Client section then find the TIS
+ * specification.
+ */
+
+#include "backends/tpm.h"
+#include "tpm_int.h"
+#include "block/block.h"
+#include "exec/address-spaces.h"
+#include "hw/hw.h"
+#include "hw/i386/pc.h"
+#include "hw/pci/pci_ids.h"
+#include "tpm_tis.h"
+#include "qemu-common.h"
+
+/*#define DEBUG_TIS */
+
+#ifdef DEBUG_TIS
+#define DPRINTF(fmt, ...) \
+ do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
+#else
+#define DPRINTF(fmt, ...) \
+ do { } while (0)
+#endif
+
+/* whether the STS interrupt is supported */
+#define RAISE_STS_IRQ
+
+/* tis registers */
+#define TPM_TIS_REG_ACCESS 0x00
+#define TPM_TIS_REG_INT_ENABLE 0x08
+#define TPM_TIS_REG_INT_VECTOR 0x0c
+#define TPM_TIS_REG_INT_STATUS 0x10
+#define TPM_TIS_REG_INTF_CAPABILITY 0x14
+#define TPM_TIS_REG_STS 0x18
+#define TPM_TIS_REG_DATA_FIFO 0x24
+#define TPM_TIS_REG_DID_VID 0xf00
+#define TPM_TIS_REG_RID 0xf04
+
+/* vendor-specific registers */
+#define TPM_TIS_REG_DEBUG 0xf90
+
+#define TPM_TIS_STS_VALID (1 << 7)
+#define TPM_TIS_STS_COMMAND_READY (1 << 6)
+#define TPM_TIS_STS_TPM_GO (1 << 5)
+#define TPM_TIS_STS_DATA_AVAILABLE (1 << 4)
+#define TPM_TIS_STS_EXPECT (1 << 3)
+#define TPM_TIS_STS_RESPONSE_RETRY (1 << 1)
+
+#define TPM_TIS_BURST_COUNT_SHIFT 8
+#define TPM_TIS_BURST_COUNT(X) \
+ ((X) << TPM_TIS_BURST_COUNT_SHIFT)
+
+#define TPM_TIS_ACCESS_TPM_REG_VALID_STS (1 << 7)
+#define TPM_TIS_ACCESS_ACTIVE_LOCALITY (1 << 5)
+#define TPM_TIS_ACCESS_BEEN_SEIZED (1 << 4)
+#define TPM_TIS_ACCESS_SEIZE (1 << 3)
+#define TPM_TIS_ACCESS_PENDING_REQUEST (1 << 2)
+#define TPM_TIS_ACCESS_REQUEST_USE (1 << 1)
+#define TPM_TIS_ACCESS_TPM_ESTABLISHMENT (1 << 0)
+
+#define TPM_TIS_INT_ENABLED (1 << 31)
+#define TPM_TIS_INT_DATA_AVAILABLE (1 << 0)
+#define TPM_TIS_INT_STS_VALID (1 << 1)
+#define TPM_TIS_INT_LOCALITY_CHANGED (1 << 2)
+#define TPM_TIS_INT_COMMAND_READY (1 << 7)
+
+#define TPM_TIS_INT_POLARITY_MASK (3 << 3)
+#define TPM_TIS_INT_POLARITY_LOW_LEVEL (1 << 3)
+
+#ifndef RAISE_STS_IRQ
+
+#define TPM_TIS_INTERRUPTS_SUPPORTED (TPM_TIS_INT_LOCALITY_CHANGED | \
+ TPM_TIS_INT_DATA_AVAILABLE | \
+ TPM_TIS_INT_COMMAND_READY)
+
+#else
+
+#define TPM_TIS_INTERRUPTS_SUPPORTED (TPM_TIS_INT_LOCALITY_CHANGED | \
+ TPM_TIS_INT_DATA_AVAILABLE | \
+ TPM_TIS_INT_STS_VALID | \
+ TPM_TIS_INT_COMMAND_READY)
+
+#endif
+
+#define TPM_TIS_CAP_INTERRUPT_LOW_LEVEL (1 << 4) /* support is mandatory */
+#define TPM_TIS_CAPABILITIES_SUPPORTED (TPM_TIS_CAP_INTERRUPT_LOW_LEVEL | \
+ TPM_TIS_INTERRUPTS_SUPPORTED)
+
+#define TPM_TIS_TPM_DID 0x0001
+#define TPM_TIS_TPM_VID PCI_VENDOR_ID_IBM
+#define TPM_TIS_TPM_RID 0x0001
+
+#define TPM_TIS_NO_DATA_BYTE 0xff
+
+/* local prototypes */
+
+static uint64_t tpm_tis_mmio_read(void *opaque, hwaddr addr,
+ unsigned size);
+
+/* utility functions */
+
+static uint8_t tpm_tis_locality_from_addr(hwaddr addr)
+{
+ return (uint8_t)((addr >> TPM_TIS_LOCALITY_SHIFT) & 0x7);
+}
+
+static uint32_t tpm_tis_get_size_from_buffer(const TPMSizedBuffer *sb)
+{
+ return be32_to_cpu(*(uint32_t *)&sb->buffer[2]);
+}
+
+static void tpm_tis_show_buffer(const TPMSizedBuffer *sb, const char *string)
+{
+#ifdef DEBUG_TIS
+ uint32_t len, i;
+
+ len = tpm_tis_get_size_from_buffer(sb);
+ DPRINTF("tpm_tis: %s length = %d\n", string, len);
+ for (i = 0; i < len; i++) {
+ if (i && !(i % 16)) {
+ DPRINTF("\n");
+ }
+ DPRINTF("%.2X ", sb->buffer[i]);
+ }
+ DPRINTF("\n");
+#endif
+}
+
+/*
+ * Send a request to the TPM.
+ */
+static void tpm_tis_tpm_send(TPMState *s, uint8_t locty)
+{
+ TPMTISEmuState *tis = &s->s.tis;
+
+ tpm_tis_show_buffer(&tis->loc[locty].w_buffer, "tpm_tis: To TPM");
+
+ s->locty_number = locty;
+ s->locty_data = &tis->loc[locty];
+
+ /*
+ * w_offset serves as length indicator for length of data;
+ * it's reset when the response comes back
+ */
+ tis->loc[locty].state = TPM_TIS_STATE_EXECUTION;
+
+ tpm_backend_deliver_request(s->be_driver);
+}
+
+/* raise an interrupt if allowed */
+static void tpm_tis_raise_irq(TPMState *s, uint8_t locty, uint32_t irqmask)
+{
+ TPMTISEmuState *tis = &s->s.tis;
+
+ if (!TPM_TIS_IS_VALID_LOCTY(locty)) {
+ return;
+ }
+
+ if ((tis->loc[locty].inte & TPM_TIS_INT_ENABLED) &&
+ (tis->loc[locty].inte & irqmask)) {
+ DPRINTF("tpm_tis: Raising IRQ for flag %08x\n", irqmask);
+ qemu_irq_raise(s->s.tis.irq);
+ tis->loc[locty].ints |= irqmask;
+ }
+}
+
+static uint32_t tpm_tis_check_request_use_except(TPMState *s, uint8_t locty)
+{
+ uint8_t l;
+
+ for (l = 0; l < TPM_TIS_NUM_LOCALITIES; l++) {
+ if (l == locty) {
+ continue;
+ }
+ if ((s->s.tis.loc[l].access & TPM_TIS_ACCESS_REQUEST_USE)) {
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static void tpm_tis_new_active_locality(TPMState *s, uint8_t new_active_locty)
+{
+ TPMTISEmuState *tis = &s->s.tis;
+ bool change = (s->s.tis.active_locty != new_active_locty);
+ bool is_seize;
+ uint8_t mask;
+
+ if (change && TPM_TIS_IS_VALID_LOCTY(s->s.tis.active_locty)) {
+ is_seize = TPM_TIS_IS_VALID_LOCTY(new_active_locty) &&
+ tis->loc[new_active_locty].access & TPM_TIS_ACCESS_SEIZE;
+
+ if (is_seize) {
+ mask = ~(TPM_TIS_ACCESS_ACTIVE_LOCALITY);
+ } else {
+ mask = ~(TPM_TIS_ACCESS_ACTIVE_LOCALITY|
+ TPM_TIS_ACCESS_REQUEST_USE);
+ }
+ /* reset flags on the old active locality */
+ tis->loc[s->s.tis.active_locty].access &= mask;
+
+ if (is_seize) {
+ tis->loc[tis->active_locty].access |= TPM_TIS_ACCESS_BEEN_SEIZED;
+ }
+ }
+
+ tis->active_locty = new_active_locty;
+
+ DPRINTF("tpm_tis: Active locality is now %d\n", s->s.tis.active_locty);
+
+ if (TPM_TIS_IS_VALID_LOCTY(new_active_locty)) {
+ /* set flags on the new active locality */
+ tis->loc[new_active_locty].access |= TPM_TIS_ACCESS_ACTIVE_LOCALITY;
+ tis->loc[new_active_locty].access &= ~(TPM_TIS_ACCESS_REQUEST_USE |
+ TPM_TIS_ACCESS_SEIZE);
+ }
+
+ if (change) {
+ tpm_tis_raise_irq(s, tis->active_locty, TPM_TIS_INT_LOCALITY_CHANGED);
+ }
+}
+
+/* abort -- this function switches the locality */
+static void tpm_tis_abort(TPMState *s, uint8_t locty)
+{
+ TPMTISEmuState *tis = &s->s.tis;
+
+ tis->loc[locty].r_offset = 0;
+ tis->loc[locty].w_offset = 0;
+
+ DPRINTF("tpm_tis: tis_abort: new active locality is %d\n", tis->next_locty);
+
+ /*
+ * Need to react differently depending on who's aborting now and
+ * which locality will become active afterwards.
+ */
+ if (tis->aborting_locty == tis->next_locty) {
+ tis->loc[tis->aborting_locty].state = TPM_TIS_STATE_READY;
+ tis->loc[tis->aborting_locty].sts = TPM_TIS_STS_COMMAND_READY;
+ tpm_tis_raise_irq(s, tis->aborting_locty, TPM_TIS_INT_COMMAND_READY);
+ }
+
+ /* locality after abort is another one than the current one */
+ tpm_tis_new_active_locality(s, tis->next_locty);
+
+ tis->next_locty = TPM_TIS_NO_LOCALITY;
+ /* nobody's aborting a command anymore */
+ tis->aborting_locty = TPM_TIS_NO_LOCALITY;
+}
+
+/* prepare aborting current command */
+static void tpm_tis_prep_abort(TPMState *s, uint8_t locty, uint8_t newlocty)
+{
+ TPMTISEmuState *tis = &s->s.tis;
+ uint8_t busy_locty;
+
+ tis->aborting_locty = locty;
+ tis->next_locty = newlocty; /* locality after successful abort */
+
+ /*
+ * only abort a command using an interrupt if currently executing
+ * a command AND if there's a valid connection to the vTPM.
+ */
+ for (busy_locty = 0; busy_locty < TPM_TIS_NUM_LOCALITIES; busy_locty++) {
+ if (tis->loc[busy_locty].state == TPM_TIS_STATE_EXECUTION) {
+ /*
+ * request the backend to cancel. Some backends may not
+ * support it
+ */
+ tpm_backend_cancel_cmd(s->be_driver);
+ return;
+ }
+ }
+
+ tpm_tis_abort(s, locty);
+}
+
+static void tpm_tis_receive_bh(void *opaque)
+{
+ TPMState *s = opaque;
+ TPMTISEmuState *tis = &s->s.tis;
+ uint8_t locty = s->locty_number;
+
+ tis->loc[locty].sts = TPM_TIS_STS_VALID | TPM_TIS_STS_DATA_AVAILABLE;
+ tis->loc[locty].state = TPM_TIS_STATE_COMPLETION;
+ tis->loc[locty].r_offset = 0;
+ tis->loc[locty].w_offset = 0;
+
+ if (TPM_TIS_IS_VALID_LOCTY(tis->next_locty)) {
+ tpm_tis_abort(s, locty);
+ }
+
+#ifndef RAISE_STS_IRQ
+ tpm_tis_raise_irq(s, locty, TPM_TIS_INT_DATA_AVAILABLE);
+#else
+ tpm_tis_raise_irq(s, locty,
+ TPM_TIS_INT_DATA_AVAILABLE | TPM_TIS_INT_STS_VALID);
+#endif
+}
+
+/*
+ * Callback from the TPM to indicate that the response was received.
+ */
+static void tpm_tis_receive_cb(TPMState *s, uint8_t locty)
+{
+ TPMTISEmuState *tis = &s->s.tis;
+
+ assert(s->locty_number == locty);
+
+ qemu_bh_schedule(tis->bh);
+}
+
+/*
+ * Read a byte of response data
+ */
+static uint32_t tpm_tis_data_read(TPMState *s, uint8_t locty)
+{
+ TPMTISEmuState *tis = &s->s.tis;
+ uint32_t ret = TPM_TIS_NO_DATA_BYTE;
+ uint16_t len;
+
+ if ((tis->loc[locty].sts & TPM_TIS_STS_DATA_AVAILABLE)) {
+ len = tpm_tis_get_size_from_buffer(&tis->loc[locty].r_buffer);
+
+ ret = tis->loc[locty].r_buffer.buffer[tis->loc[locty].r_offset++];
+ if (tis->loc[locty].r_offset >= len) {
+ /* got last byte */
+ tis->loc[locty].sts = TPM_TIS_STS_VALID;
+#ifdef RAISE_STS_IRQ
+ tpm_tis_raise_irq(s, locty, TPM_TIS_INT_STS_VALID);
+#endif
+ }
+ DPRINTF("tpm_tis: tpm_tis_data_read byte 0x%02x [%d]\n",
+ ret, tis->loc[locty].r_offset-1);
+ }
+
+ return ret;
+}
+
+#ifdef DEBUG_TIS
+static void tpm_tis_dump_state(void *opaque, hwaddr addr)
+{
+ static const unsigned regs[] = {
+ TPM_TIS_REG_ACCESS,
+ TPM_TIS_REG_INT_ENABLE,
+ TPM_TIS_REG_INT_VECTOR,
+ TPM_TIS_REG_INT_STATUS,
+ TPM_TIS_REG_INTF_CAPABILITY,
+ TPM_TIS_REG_STS,
+ TPM_TIS_REG_DID_VID,
+ TPM_TIS_REG_RID,
+ 0xfff};
+ int idx;
+ uint8_t locty = tpm_tis_locality_from_addr(addr);
+ hwaddr base = addr & ~0xfff;
+ TPMState *s = opaque;
+ TPMTISEmuState *tis = &s->s.tis;
+
+ DPRINTF("tpm_tis: active locality : %d\n"
+ "tpm_tis: state of locality %d : %d\n"
+ "tpm_tis: register dump:\n",
+ tis->active_locty,
+ locty, tis->loc[locty].state);
+
+ for (idx = 0; regs[idx] != 0xfff; idx++) {
+ DPRINTF("tpm_tis: 0x%04x : 0x%08x\n", regs[idx],
+ (uint32_t)tpm_tis_mmio_read(opaque, base + regs[idx], 4));
+ }
+
+ DPRINTF("tpm_tis: read offset : %d\n"
+ "tpm_tis: result buffer : ",
+ tis->loc[locty].r_offset);
+ for (idx = 0;
+ idx < tpm_tis_get_size_from_buffer(&tis->loc[locty].r_buffer);
+ idx++) {
+ DPRINTF("%c%02x%s",
+ tis->loc[locty].r_offset == idx ? '>' : ' ',
+ tis->loc[locty].r_buffer.buffer[idx],
+ ((idx & 0xf) == 0xf) ? "\ntpm_tis: " : "");
+ }
+ DPRINTF("\n"
+ "tpm_tis: write offset : %d\n"
+ "tpm_tis: request buffer: ",
+ tis->loc[locty].w_offset);
+ for (idx = 0;
+ idx < tpm_tis_get_size_from_buffer(&tis->loc[locty].w_buffer);
+ idx++) {
+ DPRINTF("%c%02x%s",
+ tis->loc[locty].w_offset == idx ? '>' : ' ',
+ tis->loc[locty].w_buffer.buffer[idx],
+ ((idx & 0xf) == 0xf) ? "\ntpm_tis: " : "");
+ }
+ DPRINTF("\n");
+}
+#endif
+
+/*
+ * Read a register of the TIS interface
+ * See specs pages 33-63 for description of the registers
+ */
+static uint64_t tpm_tis_mmio_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ TPMState *s = opaque;
+ TPMTISEmuState *tis = &s->s.tis;
+ uint16_t offset = addr & 0xffc;
+ uint8_t shift = (addr & 0x3) * 8;
+ uint32_t val = 0xffffffff;
+ uint8_t locty = tpm_tis_locality_from_addr(addr);
+ uint32_t avail;
+
+ if (tpm_backend_had_startup_error(s->be_driver)) {
+ return val;
+ }
+
+ switch (offset) {
+ case TPM_TIS_REG_ACCESS:
+ /* never show the SEIZE flag even though we use it internally */
+ val = tis->loc[locty].access & ~TPM_TIS_ACCESS_SEIZE;
+ /* the pending flag is always calculated */
+ if (tpm_tis_check_request_use_except(s, locty)) {
+ val |= TPM_TIS_ACCESS_PENDING_REQUEST;
+ }
+ val |= !tpm_backend_get_tpm_established_flag(s->be_driver);
+ break;
+ case TPM_TIS_REG_INT_ENABLE:
+ val = tis->loc[locty].inte;
+ break;
+ case TPM_TIS_REG_INT_VECTOR:
+ val = tis->irq_num;
+ break;
+ case TPM_TIS_REG_INT_STATUS:
+ val = tis->loc[locty].ints;
+ break;
+ case TPM_TIS_REG_INTF_CAPABILITY:
+ val = TPM_TIS_CAPABILITIES_SUPPORTED;
+ break;
+ case TPM_TIS_REG_STS:
+ if (tis->active_locty == locty) {
+ if ((tis->loc[locty].sts & TPM_TIS_STS_DATA_AVAILABLE)) {
+ val = TPM_TIS_BURST_COUNT(
+ tpm_tis_get_size_from_buffer(&tis->loc[locty].r_buffer)
+ - tis->loc[locty].r_offset) | tis->loc[locty].sts;
+ } else {
+ avail = tis->loc[locty].w_buffer.size
+ - tis->loc[locty].w_offset;
+ /*
+ * byte-sized reads should not return 0x00 for 0x100
+ * available bytes.
+ */
+ if (size == 1 && avail > 0xff) {
+ avail = 0xff;
+ }
+ val = TPM_TIS_BURST_COUNT(avail) | tis->loc[locty].sts;
+ }
+ }
+ break;
+ case TPM_TIS_REG_DATA_FIFO:
+ if (tis->active_locty == locty) {
+ switch (tis->loc[locty].state) {
+ case TPM_TIS_STATE_COMPLETION:
+ val = tpm_tis_data_read(s, locty);
+ break;
+ default:
+ val = TPM_TIS_NO_DATA_BYTE;
+ break;
+ }
+ }
+ break;
+ case TPM_TIS_REG_DID_VID:
+ val = (TPM_TIS_TPM_DID << 16) | TPM_TIS_TPM_VID;
+ break;
+ case TPM_TIS_REG_RID:
+ val = TPM_TIS_TPM_RID;
+ break;
+#ifdef DEBUG_TIS
+ case TPM_TIS_REG_DEBUG:
+ tpm_tis_dump_state(opaque, addr);
+ break;
+#endif
+ }
+
+ if (shift) {
+ val >>= shift;
+ }
+
+ DPRINTF("tpm_tis: read.%u(%08x) = %08x\n", size, (int)addr, (uint32_t)val);
+
+ return val;
+}
+
+/*
+ * Write a value to a register of the TIS interface
+ * See specs pages 33-63 for description of the registers
+ */
+static void tpm_tis_mmio_write_intern(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size,
+ bool hw_access)
+{
+ TPMState *s = opaque;
+ TPMTISEmuState *tis = &s->s.tis;
+ uint16_t off = addr & 0xfff;
+ uint8_t locty = tpm_tis_locality_from_addr(addr);
+ uint8_t active_locty, l;
+ int c, set_new_locty = 1;
+ uint16_t len;
+
+ DPRINTF("tpm_tis: write.%u(%08x) = %08x\n", size, (int)addr, (uint32_t)val);
+
+ if (locty == 4 && !hw_access) {
+ DPRINTF("tpm_tis: Access to locality 4 only allowed from hardware\n");
+ return;
+ }
+
+ if (tpm_backend_had_startup_error(s->be_driver)) {
+ return;
+ }
+
+ switch (off) {
+ case TPM_TIS_REG_ACCESS:
+
+ if ((val & TPM_TIS_ACCESS_SEIZE)) {
+ val &= ~(TPM_TIS_ACCESS_REQUEST_USE |
+ TPM_TIS_ACCESS_ACTIVE_LOCALITY);
+ }
+
+ active_locty = tis->active_locty;
+
+ if ((val & TPM_TIS_ACCESS_ACTIVE_LOCALITY)) {
+ /* give up locality if currently owned */
+ if (tis->active_locty == locty) {
+ DPRINTF("tpm_tis: Releasing locality %d\n", locty);
+
+ uint8_t newlocty = TPM_TIS_NO_LOCALITY;
+ /* anybody wants the locality ? */
+ for (c = TPM_TIS_NUM_LOCALITIES - 1; c >= 0; c--) {
+ if ((tis->loc[c].access & TPM_TIS_ACCESS_REQUEST_USE)) {
+ DPRINTF("tpm_tis: Locality %d requests use.\n", c);
+ newlocty = c;
+ break;
+ }
+ }
+ DPRINTF("tpm_tis: TPM_TIS_ACCESS_ACTIVE_LOCALITY: "
+ "Next active locality: %d\n",
+ newlocty);
+
+ if (TPM_TIS_IS_VALID_LOCTY(newlocty)) {
+ set_new_locty = 0;
+ tpm_tis_prep_abort(s, locty, newlocty);
+ } else {
+ active_locty = TPM_TIS_NO_LOCALITY;
+ }
+ } else {
+ /* not currently the owner; clear a pending request */
+ tis->loc[locty].access &= ~TPM_TIS_ACCESS_REQUEST_USE;
+ }
+ }
+
+ if ((val & TPM_TIS_ACCESS_BEEN_SEIZED)) {
+ tis->loc[locty].access &= ~TPM_TIS_ACCESS_BEEN_SEIZED;
+ }
+
+ if ((val & TPM_TIS_ACCESS_SEIZE)) {
+ /*
+ * allow seize if a locality is active and the requesting
+ * locality is higher than the one that's active
+ * OR
+ * allow seize for requesting locality if no locality is
+ * active
+ */
+ while ((TPM_TIS_IS_VALID_LOCTY(tis->active_locty) &&
+ locty > tis->active_locty) ||
+ !TPM_TIS_IS_VALID_LOCTY(tis->active_locty)) {
+ bool higher_seize = FALSE;
+
+ /* already a pending SEIZE ? */
+ if ((tis->loc[locty].access & TPM_TIS_ACCESS_SEIZE)) {
+ break;
+ }
+
+ /* check for ongoing seize by a higher locality */
+ for (l = locty + 1; l < TPM_TIS_NUM_LOCALITIES; l++) {
+ if ((tis->loc[l].access & TPM_TIS_ACCESS_SEIZE)) {
+ higher_seize = TRUE;
+ break;
+ }
+ }
+
+ if (higher_seize) {
+ break;
+ }
+
+ /* cancel any seize by a lower locality */
+ for (l = 0; l < locty - 1; l++) {
+ tis->loc[l].access &= ~TPM_TIS_ACCESS_SEIZE;
+ }
+
+ tis->loc[locty].access |= TPM_TIS_ACCESS_SEIZE;
+ DPRINTF("tpm_tis: TPM_TIS_ACCESS_SEIZE: "
+ "Locality %d seized from locality %d\n",
+ locty, tis->active_locty);
+ DPRINTF("tpm_tis: TPM_TIS_ACCESS_SEIZE: Initiating abort.\n");
+ set_new_locty = 0;
+ tpm_tis_prep_abort(s, tis->active_locty, locty);
+ break;
+ }
+ }
+
+ if ((val & TPM_TIS_ACCESS_REQUEST_USE)) {
+ if (tis->active_locty != locty) {
+ if (TPM_TIS_IS_VALID_LOCTY(tis->active_locty)) {
+ tis->loc[locty].access |= TPM_TIS_ACCESS_REQUEST_USE;
+ } else {
+ /* no locality active -> make this one active now */
+ active_locty = locty;
+ }
+ }
+ }
+
+ if (set_new_locty) {
+ tpm_tis_new_active_locality(s, active_locty);
+ }
+
+ break;
+ case TPM_TIS_REG_INT_ENABLE:
+ if (tis->active_locty != locty) {
+ break;
+ }
+
+ tis->loc[locty].inte = (val & (TPM_TIS_INT_ENABLED |
+ TPM_TIS_INT_POLARITY_MASK |
+ TPM_TIS_INTERRUPTS_SUPPORTED));
+ break;
+ case TPM_TIS_REG_INT_VECTOR:
+ /* hard wired -- ignore */
+ break;
+ case TPM_TIS_REG_INT_STATUS:
+ if (tis->active_locty != locty) {
+ break;
+ }
+
+ /* clearing of interrupt flags */
+ if (((val & TPM_TIS_INTERRUPTS_SUPPORTED)) &&
+ (tis->loc[locty].ints & TPM_TIS_INTERRUPTS_SUPPORTED)) {
+ tis->loc[locty].ints &= ~val;
+ if (tis->loc[locty].ints == 0) {
+ qemu_irq_lower(tis->irq);
+ DPRINTF("tpm_tis: Lowering IRQ\n");
+ }
+ }
+ tis->loc[locty].ints &= ~(val & TPM_TIS_INTERRUPTS_SUPPORTED);
+ break;
+ case TPM_TIS_REG_STS:
+ if (tis->active_locty != locty) {
+ break;
+ }
+
+ val &= (TPM_TIS_STS_COMMAND_READY | TPM_TIS_STS_TPM_GO |
+ TPM_TIS_STS_RESPONSE_RETRY);
+
+ if (val == TPM_TIS_STS_COMMAND_READY) {
+ switch (tis->loc[locty].state) {
+
+ case TPM_TIS_STATE_READY:
+ tis->loc[locty].w_offset = 0;
+ tis->loc[locty].r_offset = 0;
+ break;
+
+ case TPM_TIS_STATE_IDLE:
+ tis->loc[locty].sts = TPM_TIS_STS_COMMAND_READY;
+ tis->loc[locty].state = TPM_TIS_STATE_READY;
+ tpm_tis_raise_irq(s, locty, TPM_TIS_INT_COMMAND_READY);
+ break;
+
+ case TPM_TIS_STATE_EXECUTION:
+ case TPM_TIS_STATE_RECEPTION:
+ /* abort currently running command */
+ DPRINTF("tpm_tis: %s: Initiating abort.\n",
+ __func__);
+ tpm_tis_prep_abort(s, locty, locty);
+ break;
+
+ case TPM_TIS_STATE_COMPLETION:
+ tis->loc[locty].w_offset = 0;
+ tis->loc[locty].r_offset = 0;
+ /* shortcut to ready state with C/R set */
+ tis->loc[locty].state = TPM_TIS_STATE_READY;
+ if (!(tis->loc[locty].sts & TPM_TIS_STS_COMMAND_READY)) {
+ tis->loc[locty].sts = TPM_TIS_STS_COMMAND_READY;
+ tpm_tis_raise_irq(s, locty, TPM_TIS_INT_COMMAND_READY);
+ }
+ tis->loc[locty].sts &= ~(TPM_TIS_STS_DATA_AVAILABLE);
+ break;
+
+ }
+ } else if (val == TPM_TIS_STS_TPM_GO) {
+ switch (tis->loc[locty].state) {
+ case TPM_TIS_STATE_RECEPTION:
+ if ((tis->loc[locty].sts & TPM_TIS_STS_EXPECT) == 0) {
+ tpm_tis_tpm_send(s, locty);
+ }
+ break;
+ default:
+ /* ignore */
+ break;
+ }
+ } else if (val == TPM_TIS_STS_RESPONSE_RETRY) {
+ switch (tis->loc[locty].state) {
+ case TPM_TIS_STATE_COMPLETION:
+ tis->loc[locty].r_offset = 0;
+ tis->loc[locty].sts = TPM_TIS_STS_VALID |
+ TPM_TIS_STS_DATA_AVAILABLE;
+ break;
+ default:
+ /* ignore */
+ break;
+ }
+ }
+ break;
+ case TPM_TIS_REG_DATA_FIFO:
+ /* data fifo */
+ if (tis->active_locty != locty) {
+ break;
+ }
+
+ if (tis->loc[locty].state == TPM_TIS_STATE_IDLE ||
+ tis->loc[locty].state == TPM_TIS_STATE_EXECUTION ||
+ tis->loc[locty].state == TPM_TIS_STATE_COMPLETION) {
+ /* drop the byte */
+ } else {
+ DPRINTF("tpm_tis: Byte to send to TPM: %02x\n", (uint8_t)val);
+ if (tis->loc[locty].state == TPM_TIS_STATE_READY) {
+ tis->loc[locty].state = TPM_TIS_STATE_RECEPTION;
+ tis->loc[locty].sts = TPM_TIS_STS_EXPECT | TPM_TIS_STS_VALID;
+ }
+
+ if ((tis->loc[locty].sts & TPM_TIS_STS_EXPECT)) {
+ if (tis->loc[locty].w_offset < tis->loc[locty].w_buffer.size) {
+ tis->loc[locty].w_buffer.
+ buffer[tis->loc[locty].w_offset++] = (uint8_t)val;
+ } else {
+ tis->loc[locty].sts = TPM_TIS_STS_VALID;
+ }
+ }
+
+ /* check for complete packet */
+ if (tis->loc[locty].w_offset > 5 &&
+ (tis->loc[locty].sts & TPM_TIS_STS_EXPECT)) {
+ /* we have a packet length - see if we have all of it */
+#ifdef RAISE_STS_IRQ
+ bool needIrq = !(tis->loc[locty].sts & TPM_TIS_STS_VALID);
+#endif
+ len = tpm_tis_get_size_from_buffer(&tis->loc[locty].w_buffer);
+ if (len > tis->loc[locty].w_offset) {
+ tis->loc[locty].sts = TPM_TIS_STS_EXPECT |
+ TPM_TIS_STS_VALID;
+ } else {
+ /* packet complete */
+ tis->loc[locty].sts = TPM_TIS_STS_VALID;
+ }
+#ifdef RAISE_STS_IRQ
+ if (needIrq) {
+ tpm_tis_raise_irq(s, locty, TPM_TIS_INT_STS_VALID);
+ }
+#endif
+ }
+ }
+ break;
+ }
+}
+
+static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
+{
+ return tpm_tis_mmio_write_intern(opaque, addr, val, size, false);
+}
+
+static const MemoryRegionOps tpm_tis_memory_ops = {
+ .read = tpm_tis_mmio_read,
+ .write = tpm_tis_mmio_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .valid = {
+ .min_access_size = 1,
+ .max_access_size = 4,
+ },
+};
+
+static int tpm_tis_do_startup_tpm(TPMState *s)
+{
+ return tpm_backend_startup_tpm(s->be_driver);
+}
+
+/*
+ * This function is called when the machine starts, resets or due to
+ * S3 resume.
+ */
+static void tpm_tis_reset(DeviceState *dev)
+{
+ TPMState *s = TPM(dev);
+ TPMTISEmuState *tis = &s->s.tis;
+ int c;
+
+ tpm_backend_reset(s->be_driver);
+
+ tis->active_locty = TPM_TIS_NO_LOCALITY;
+ tis->next_locty = TPM_TIS_NO_LOCALITY;
+ tis->aborting_locty = TPM_TIS_NO_LOCALITY;
+
+ for (c = 0; c < TPM_TIS_NUM_LOCALITIES; c++) {
+ tis->loc[c].access = TPM_TIS_ACCESS_TPM_REG_VALID_STS;
+ tis->loc[c].sts = 0;
+ tis->loc[c].inte = TPM_TIS_INT_POLARITY_LOW_LEVEL;
+ tis->loc[c].ints = 0;
+ tis->loc[c].state = TPM_TIS_STATE_IDLE;
+
+ tis->loc[c].w_offset = 0;
+ tpm_backend_realloc_buffer(s->be_driver, &tis->loc[c].w_buffer);
+ tis->loc[c].r_offset = 0;
+ tpm_backend_realloc_buffer(s->be_driver, &tis->loc[c].r_buffer);
+ }
+
+ tpm_tis_do_startup_tpm(s);
+}
+
+static const VMStateDescription vmstate_tpm_tis = {
+ .name = "tpm",
+ .unmigratable = 1,
+};
+
+static Property tpm_tis_properties[] = {
+ DEFINE_PROP_UINT32("irq", TPMState,
+ s.tis.irq_num, TPM_TIS_IRQ),
+ DEFINE_PROP_STRING("tpmdev", TPMState, backend),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void tpm_tis_realizefn(DeviceState *dev, Error **errp)
+{
+ TPMState *s = TPM(dev);
+ TPMTISEmuState *tis = &s->s.tis;
+
+ s->be_driver = qemu_find_tpm(s->backend);
+ if (!s->be_driver) {
+ error_setg(errp, "tpm_tis: backend driver with id %s could not be "
+ "found", s->backend);
+ return;
+ }
+
+ s->be_driver->fe_model = TPM_MODEL_TPM_TIS;
+
+ if (tpm_backend_init(s->be_driver, s, tpm_tis_receive_cb)) {
+ error_setg(errp, "tpm_tis: backend driver with id %s could not be "
+ "initialized", s->backend);
+ return;
+ }
+
+ if (tis->irq_num > 15) {
+ error_setg(errp, "tpm_tis: IRQ %d for TPM TIS is outside valid range "
+ "of 0 to 15.\n", tis->irq_num);
+ return;
+ }
+
+ tis->bh = qemu_bh_new(tpm_tis_receive_bh, s);
+
+ isa_init_irq(&s->busdev, &tis->irq, tis->irq_num);
+}
+
+static void tpm_tis_initfn(Object *obj)
+{
+ ISADevice *dev = ISA_DEVICE(obj);
+ TPMState *s = TPM(obj);
+
+ memory_region_init_io(&s->mmio, &tpm_tis_memory_ops, s, "tpm-tis-mmio",
+ TPM_TIS_NUM_LOCALITIES << TPM_TIS_LOCALITY_SHIFT);
+ memory_region_add_subregion(isa_address_space(dev), TPM_TIS_ADDR_BASE,
+ &s->mmio);
+}
+
+static void tpm_tis_uninitfn(Object *obj)
+{
+ TPMState *s = TPM(obj);
+
+ memory_region_del_subregion(get_system_memory(), &s->mmio);
+ memory_region_destroy(&s->mmio);
+}
+
+static void tpm_tis_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->realize = tpm_tis_realizefn;
+ dc->props = tpm_tis_properties;
+ dc->reset = tpm_tis_reset;
+ dc->vmsd = &vmstate_tpm_tis;
+}
+
+static const TypeInfo tpm_tis_info = {
+ .name = TYPE_TPM_TIS,
+ .parent = TYPE_ISA_DEVICE,
+ .instance_size = sizeof(TPMState),
+ .instance_init = tpm_tis_initfn,
+ .instance_finalize = tpm_tis_uninitfn,
+ .class_init = tpm_tis_class_init,
+};
+
+static void tpm_tis_register(void)
+{
+ type_register_static(&tpm_tis_info);
+ tpm_register_model(TPM_MODEL_TPM_TIS);
+}
+
+type_init(tpm_tis_register)
--- /dev/null
+/*
+ * tpm_tis.h - QEMU's TPM TIS interface emulator
+ *
+ * Copyright (C) 2006, 2010-2013 IBM Corporation
+ *
+ * Authors:
+ * Stefan Berger <stefanb@us.ibm.com>
+ * David Safford <safford@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ * Implementation of the TIS interface according to specs found at
+ * http://www.trustedcomputinggroup.org
+ *
+ */
+#ifndef TPM_TPM_TIS_H
+#define TPM_TPM_TIS_H
+
+#include "hw/isa/isa.h"
+#include "qemu-common.h"
+
+#define TPM_TIS_ADDR_BASE 0xFED40000
+
+#define TPM_TIS_NUM_LOCALITIES 5 /* per spec */
+#define TPM_TIS_LOCALITY_SHIFT 12
+#define TPM_TIS_NO_LOCALITY 0xff
+
+#define TPM_TIS_IS_VALID_LOCTY(x) ((x) < TPM_TIS_NUM_LOCALITIES)
+
+#define TPM_TIS_IRQ 5
+
+#define TPM_TIS_BUFFER_MAX 4096
+
+#define TYPE_TPM_TIS "tpm-tis"
+
+
+typedef enum {
+ TPM_TIS_STATE_IDLE = 0,
+ TPM_TIS_STATE_READY,
+ TPM_TIS_STATE_COMPLETION,
+ TPM_TIS_STATE_EXECUTION,
+ TPM_TIS_STATE_RECEPTION,
+} TPMTISState;
+
+/* locality data -- all fields are persisted */
+typedef struct TPMLocality {
+ TPMTISState state;
+ uint8_t access;
+ uint8_t sts;
+ uint32_t inte;
+ uint32_t ints;
+
+ uint16_t w_offset;
+ uint16_t r_offset;
+ TPMSizedBuffer w_buffer;
+ TPMSizedBuffer r_buffer;
+} TPMLocality;
+
+typedef struct TPMTISEmuState {
+ QEMUBH *bh;
+ uint32_t offset;
+ uint8_t buf[TPM_TIS_BUFFER_MAX];
+
+ uint8_t active_locty;
+ uint8_t aborting_locty;
+ uint8_t next_locty;
+
+ TPMLocality loc[TPM_TIS_NUM_LOCALITIES];
+
+ qemu_irq irq;
+ uint32_t irq_num;
+} TPMTISEmuState;
+
+#endif /* TPM_TPM_TIS_H */
#include "qapi/error.h"
#include "qapi-types.h"
#include "qemu/option.h"
-#include "tpm/tpm.h"
+#include "sysemu/tpm.h"
#define TYPE_TPM_BACKEND "tpm-backend"
#define TPM_BACKEND(obj) \
QLIST_ENTRY(TPMBackend) list;
};
+typedef void (TPMRecvDataCB)(TPMState *, uint8_t locty);
+
+typedef struct TPMSizedBuffer {
+ uint32_t size;
+ uint8_t *buffer;
+} TPMSizedBuffer;
+
+struct TPMDriverOps {
+ enum TpmType type;
+ /* get a descriptive text of the backend to display to the user */
+ const char *(*desc)(void);
+
+ TPMBackend *(*create)(QemuOpts *opts, const char *id);
+ void (*destroy)(TPMBackend *t);
+
+ /* initialize the backend */
+ int (*init)(TPMBackend *t, TPMState *s, TPMRecvDataCB *datacb);
+ /* start up the TPM on the backend */
+ int (*startup_tpm)(TPMBackend *t);
+ /* returns true if nothing will ever answer TPM requests */
+ bool (*had_startup_error)(TPMBackend *t);
+
+ size_t (*realloc_buffer)(TPMSizedBuffer *sb);
+
+ void (*deliver_request)(TPMBackend *t);
+
+ void (*reset)(TPMBackend *t);
+
+ void (*cancel_cmd)(TPMBackend *t);
+
+ bool (*get_tpm_established_flag)(TPMBackend *t);
+};
+
/**
* tpm_backend_get_type:
*/
void tpm_backend_open(TPMBackend *s, Error **errp);
+TPMBackend *qemu_find_tpm(const char *id);
+
+const TPMDriverOps *tpm_get_backend_driver(const char *type);
+int tpm_register_model(enum TpmModel model);
+int tpm_register_driver(const TPMDriverOps *tdo);
+
#endif
--- /dev/null
+/*
+ * Public TPM functions
+ *
+ * Copyright (C) 2011-2013 IBM Corporation
+ *
+ * Authors:
+ * Stefan Berger <stefanb@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#ifndef QEMU_TPM_H
+#define QEMU_TPM_H
+
+#include "qemu/option.h"
+
+typedef struct TPMState TPMState;
+
+int tpm_config_parse(QemuOptsList *opts_list, const char *optarg);
+int tpm_init(void);
+void tpm_cleanup(void);
+
+#endif /* QEMU_TPM_H */
--- /dev/null
+/*
+ * common TPM backend driver functions
+ *
+ * Copyright (c) 2012-2013 IBM Corporation
+ * Authors:
+ * Stefan Berger <stefanb@us.ibm.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>
+ */
+
+#ifndef TPM_TPM_BACKEND_H
+#define TPM_TPM_BACKEND_H
+
+#include <glib.h>
+
+typedef struct TPMBackendThread {
+ GThreadPool *pool;
+} TPMBackendThread;
+
+void tpm_backend_thread_deliver_request(TPMBackendThread *tbt);
+void tpm_backend_thread_create(TPMBackendThread *tbt,
+ GFunc func, gpointer user_data);
+void tpm_backend_thread_end(TPMBackendThread *tbt);
+void tpm_backend_thread_tpm_reset(TPMBackendThread *tbt,
+ GFunc func, gpointer user_data);
+
+typedef enum TPMBackendCmd {
+ TPM_BACKEND_CMD_INIT = 1,
+ TPM_BACKEND_CMD_PROCESS_CMD,
+ TPM_BACKEND_CMD_END,
+ TPM_BACKEND_CMD_TPM_RESET,
+} TPMBackendCmd;
+
+#endif /* TPM_TPM_BACKEND_H */
+++ /dev/null
-/*
- * Public TPM functions
- *
- * Copyright (C) 2011-2013 IBM Corporation
- *
- * Authors:
- * Stefan Berger <stefanb@us.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- */
-#ifndef QEMU_TPM_H
-#define QEMU_TPM_H
-
-#include "qemu/option.h"
-
-typedef struct TPMState TPMState;
-typedef struct TPMSizedBuffer TPMSizedBuffer;
-typedef void (TPMRecvDataCB)(TPMState *, uint8_t locty);
-
-int tpm_config_parse(QemuOptsList *opts_list, const char *optarg);
-int tpm_init(void);
-void tpm_cleanup(void);
-
-#endif /* QEMU_TPM_H */
#include "migration/migration.h"
#include "sysemu/kvm.h"
#include "qemu/acl.h"
-#include "tpm/tpm.h"
+#include "sysemu/tpm.h"
#include "qapi/qmp/qint.h"
#include "qapi/qmp/qfloat.h"
#include "qapi/qmp/qlist.h"
--- /dev/null
+/*
+ * TPM configuration
+ *
+ * Copyright (C) 2011-2013 IBM Corporation
+ *
+ * Authors:
+ * Stefan Berger <stefanb@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ * Based on net.c
+ */
+#include "config-host.h"
+
+#include "monitor/monitor.h"
+#include "qapi/qmp/qerror.h"
+#include "backends/tpm.h"
+#include "sysemu/tpm.h"
+#include "qemu/config-file.h"
+#include "qmp-commands.h"
+
+static QLIST_HEAD(, TPMBackend) tpm_backends =
+ QLIST_HEAD_INITIALIZER(tpm_backends);
+
+
+#define TPM_MAX_MODELS 1
+#define TPM_MAX_DRIVERS 1
+
+static TPMDriverOps const *be_drivers[TPM_MAX_DRIVERS] = {
+ NULL,
+};
+
+static enum TpmModel tpm_models[TPM_MAX_MODELS] = {
+ -1,
+};
+
+int tpm_register_model(enum TpmModel model)
+{
+ int i;
+
+ for (i = 0; i < TPM_MAX_MODELS; i++) {
+ if (tpm_models[i] == -1) {
+ tpm_models[i] = model;
+ return 0;
+ }
+ }
+ error_report("Could not register TPM model");
+ return 1;
+}
+
+static bool tpm_model_is_registered(enum TpmModel model)
+{
+ int i;
+
+ for (i = 0; i < TPM_MAX_MODELS; i++) {
+ if (tpm_models[i] == model) {
+ return true;
+ }
+ }
+ return false;
+}
+
+const TPMDriverOps *tpm_get_backend_driver(const char *type)
+{
+ int i;
+
+ for (i = 0; i < TPM_MAX_DRIVERS && be_drivers[i] != NULL; i++) {
+ if (!strcmp(TpmType_lookup[be_drivers[i]->type], type)) {
+ return be_drivers[i];
+ }
+ }
+
+ return NULL;
+}
+
+#ifdef CONFIG_TPM
+
+int tpm_register_driver(const TPMDriverOps *tdo)
+{
+ int i;
+
+ for (i = 0; i < TPM_MAX_DRIVERS; i++) {
+ if (!be_drivers[i]) {
+ be_drivers[i] = tdo;
+ return 0;
+ }
+ }
+ error_report("Could not register TPM driver");
+ return 1;
+}
+
+/*
+ * Walk the list of available TPM backend drivers and display them on the
+ * screen.
+ */
+static void tpm_display_backend_drivers(void)
+{
+ int i;
+
+ fprintf(stderr, "Supported TPM types (choose only one):\n");
+
+ for (i = 0; i < TPM_MAX_DRIVERS && be_drivers[i] != NULL; i++) {
+ fprintf(stderr, "%12s %s\n",
+ TpmType_lookup[be_drivers[i]->type], be_drivers[i]->desc());
+ }
+ fprintf(stderr, "\n");
+}
+
+/*
+ * Find the TPM with the given Id
+ */
+TPMBackend *qemu_find_tpm(const char *id)
+{
+ TPMBackend *drv;
+
+ if (id) {
+ QLIST_FOREACH(drv, &tpm_backends, list) {
+ if (!strcmp(drv->id, id)) {
+ return drv;
+ }
+ }
+ }
+
+ return NULL;
+}
+
+static int configure_tpm(QemuOpts *opts)
+{
+ const char *value;
+ const char *id;
+ const TPMDriverOps *be;
+ TPMBackend *drv;
+ Error *local_err = NULL;
+
+ if (!QLIST_EMPTY(&tpm_backends)) {
+ error_report("Only one TPM is allowed.\n");
+ return 1;
+ }
+
+ id = qemu_opts_id(opts);
+ if (id == NULL) {
+ qerror_report(QERR_MISSING_PARAMETER, "id");
+ return 1;
+ }
+
+ value = qemu_opt_get(opts, "type");
+ if (!value) {
+ qerror_report(QERR_MISSING_PARAMETER, "type");
+ tpm_display_backend_drivers();
+ return 1;
+ }
+
+ be = tpm_get_backend_driver(value);
+ if (be == NULL) {
+ qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
+ "a TPM backend type");
+ tpm_display_backend_drivers();
+ return 1;
+ }
+
+ drv = be->create(opts, id);
+ if (!drv) {
+ return 1;
+ }
+
+ tpm_backend_open(drv, &local_err);
+ if (local_err) {
+ qerror_report_err(local_err);
+ error_free(local_err);
+ return 1;
+ }
+
+ QLIST_INSERT_HEAD(&tpm_backends, drv, list);
+
+ return 0;
+}
+
+static int tpm_init_tpmdev(QemuOpts *opts, void *dummy)
+{
+ return configure_tpm(opts);
+}
+
+/*
+ * Walk the list of TPM backend drivers that are in use and call their
+ * destroy function to have them cleaned up.
+ */
+void tpm_cleanup(void)
+{
+ TPMBackend *drv, *next;
+
+ QLIST_FOREACH_SAFE(drv, &tpm_backends, list, next) {
+ QLIST_REMOVE(drv, list);
+ tpm_backend_destroy(drv);
+ }
+}
+
+/*
+ * Initialize the TPM. Process the tpmdev command line options describing the
+ * TPM backend.
+ */
+int tpm_init(void)
+{
+ if (qemu_opts_foreach(qemu_find_opts("tpmdev"),
+ tpm_init_tpmdev, NULL, 1) != 0) {
+ return -1;
+ }
+
+ atexit(tpm_cleanup);
+
+ return 0;
+}
+
+/*
+ * Parse the TPM configuration options.
+ * To display all available TPM backends the user may use '-tpmdev help'
+ */
+int tpm_config_parse(QemuOptsList *opts_list, const char *optarg)
+{
+ QemuOpts *opts;
+
+ if (!strcmp(optarg, "help")) {
+ tpm_display_backend_drivers();
+ return -1;
+ }
+ opts = qemu_opts_parse(opts_list, optarg, 1);
+ if (!opts) {
+ return -1;
+ }
+ return 0;
+}
+
+#endif /* CONFIG_TPM */
+
+static const TPMDriverOps *tpm_driver_find_by_type(enum TpmType type)
+{
+ int i;
+
+ for (i = 0; i < TPM_MAX_DRIVERS && be_drivers[i] != NULL; i++) {
+ if (be_drivers[i]->type == type) {
+ return be_drivers[i];
+ }
+ }
+ return NULL;
+}
+
+static TPMInfo *qmp_query_tpm_inst(TPMBackend *drv)
+{
+ TPMInfo *res = g_new0(TPMInfo, 1);
+ TPMPassthroughOptions *tpo;
+
+ res->id = g_strdup(drv->id);
+ res->model = drv->fe_model;
+ res->options = g_new0(TpmTypeOptions, 1);
+
+ switch (drv->ops->type) {
+ case TPM_TYPE_PASSTHROUGH:
+ res->options->kind = TPM_TYPE_OPTIONS_KIND_PASSTHROUGH;
+ tpo = g_new0(TPMPassthroughOptions, 1);
+ res->options->passthrough = tpo;
+ if (drv->path) {
+ tpo->path = g_strdup(drv->path);
+ tpo->has_path = true;
+ }
+ if (drv->cancel_path) {
+ tpo->cancel_path = g_strdup(drv->cancel_path);
+ tpo->has_cancel_path = true;
+ }
+ break;
+ case TPM_TYPE_MAX:
+ break;
+ }
+
+ return res;
+}
+
+/*
+ * Walk the list of active TPM backends and collect information about them
+ * following the schema description in qapi-schema.json.
+ */
+TPMInfoList *qmp_query_tpm(Error **errp)
+{
+ TPMBackend *drv;
+ TPMInfoList *info, *head = NULL, *cur_item = NULL;
+
+ QLIST_FOREACH(drv, &tpm_backends, list) {
+ if (!tpm_model_is_registered(drv->fe_model)) {
+ continue;
+ }
+ info = g_new0(TPMInfoList, 1);
+ info->value = qmp_query_tpm_inst(drv);
+
+ if (!cur_item) {
+ head = cur_item = info;
+ } else {
+ cur_item->next = info;
+ cur_item = info;
+ }
+ }
+
+ return head;
+}
+
+TpmTypeList *qmp_query_tpm_types(Error **errp)
+{
+ unsigned int i = 0;
+ TpmTypeList *head = NULL, *prev = NULL, *cur_item;
+
+ for (i = 0; i < TPM_TYPE_MAX; i++) {
+ if (!tpm_driver_find_by_type(i)) {
+ continue;
+ }
+ cur_item = g_new0(TpmTypeList, 1);
+ cur_item->value = i;
+
+ if (prev) {
+ prev->next = cur_item;
+ }
+ if (!head) {
+ head = cur_item;
+ }
+ prev = cur_item;
+ }
+
+ return head;
+}
+
+TpmModelList *qmp_query_tpm_models(Error **errp)
+{
+ unsigned int i = 0;
+ TpmModelList *head = NULL, *prev = NULL, *cur_item;
+
+ for (i = 0; i < TPM_MODEL_MAX; i++) {
+ if (!tpm_model_is_registered(i)) {
+ continue;
+ }
+ cur_item = g_new0(TpmModelList, 1);
+ cur_item->value = i;
+
+ if (prev) {
+ prev->next = cur_item;
+ }
+ if (!head) {
+ head = cur_item;
+ }
+ prev = cur_item;
+ }
+
+ return head;
+}
+++ /dev/null
-common-obj-y = tpm.o
-common-obj-$(CONFIG_TPM) += tpm_backend.o
-common-obj-$(CONFIG_TPM_TIS) += tpm_tis.o
-common-obj-$(CONFIG_TPM_PASSTHROUGH) += tpm_passthrough.o
+++ /dev/null
-/*
- * TPM configuration
- *
- * Copyright (C) 2011-2013 IBM Corporation
- *
- * Authors:
- * Stefan Berger <stefanb@us.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
- * Based on net.c
- */
-#include "config-host.h"
-
-#include "monitor/monitor.h"
-#include "qapi/qmp/qerror.h"
-#include "backends/tpm.h"
-#include "tpm_int.h"
-#include "tpm/tpm.h"
-#include "qemu/config-file.h"
-#include "qmp-commands.h"
-
-static QLIST_HEAD(, TPMBackend) tpm_backends =
- QLIST_HEAD_INITIALIZER(tpm_backends);
-
-
-#define TPM_MAX_MODELS 1
-#define TPM_MAX_DRIVERS 1
-
-static TPMDriverOps const *be_drivers[TPM_MAX_DRIVERS] = {
- NULL,
-};
-
-static enum TpmModel tpm_models[TPM_MAX_MODELS] = {
- -1,
-};
-
-int tpm_register_model(enum TpmModel model)
-{
- int i;
-
- for (i = 0; i < TPM_MAX_MODELS; i++) {
- if (tpm_models[i] == -1) {
- tpm_models[i] = model;
- return 0;
- }
- }
- error_report("Could not register TPM model");
- return 1;
-}
-
-static bool tpm_model_is_registered(enum TpmModel model)
-{
- int i;
-
- for (i = 0; i < TPM_MAX_MODELS; i++) {
- if (tpm_models[i] == model) {
- return true;
- }
- }
- return false;
-}
-
-/*
- * Write an error message in the given output buffer.
- */
-void tpm_write_fatal_error_response(uint8_t *out, uint32_t out_len)
-{
- if (out_len >= sizeof(struct tpm_resp_hdr)) {
- struct tpm_resp_hdr *resp = (struct tpm_resp_hdr *)out;
-
- resp->tag = cpu_to_be16(TPM_TAG_RSP_COMMAND);
- resp->len = cpu_to_be32(sizeof(struct tpm_resp_hdr));
- resp->errcode = cpu_to_be32(TPM_FAIL);
- }
-}
-
-const TPMDriverOps *tpm_get_backend_driver(const char *type)
-{
- int i;
-
- for (i = 0; i < TPM_MAX_DRIVERS && be_drivers[i] != NULL; i++) {
- if (!strcmp(TpmType_lookup[be_drivers[i]->type], type)) {
- return be_drivers[i];
- }
- }
-
- return NULL;
-}
-
-#ifdef CONFIG_TPM
-
-int tpm_register_driver(const TPMDriverOps *tdo)
-{
- int i;
-
- for (i = 0; i < TPM_MAX_DRIVERS; i++) {
- if (!be_drivers[i]) {
- be_drivers[i] = tdo;
- return 0;
- }
- }
- error_report("Could not register TPM driver");
- return 1;
-}
-
-/*
- * Walk the list of available TPM backend drivers and display them on the
- * screen.
- */
-void tpm_display_backend_drivers(void)
-{
- int i;
-
- fprintf(stderr, "Supported TPM types (choose only one):\n");
-
- for (i = 0; i < TPM_MAX_DRIVERS && be_drivers[i] != NULL; i++) {
- fprintf(stderr, "%12s %s\n",
- TpmType_lookup[be_drivers[i]->type], be_drivers[i]->desc());
- }
- fprintf(stderr, "\n");
-}
-
-/*
- * Find the TPM with the given Id
- */
-TPMBackend *qemu_find_tpm(const char *id)
-{
- TPMBackend *drv;
-
- if (id) {
- QLIST_FOREACH(drv, &tpm_backends, list) {
- if (!strcmp(drv->id, id)) {
- return drv;
- }
- }
- }
-
- return NULL;
-}
-
-static int configure_tpm(QemuOpts *opts)
-{
- const char *value;
- const char *id;
- const TPMDriverOps *be;
- TPMBackend *drv;
- Error *local_err = NULL;
-
- if (!QLIST_EMPTY(&tpm_backends)) {
- error_report("Only one TPM is allowed.\n");
- return 1;
- }
-
- id = qemu_opts_id(opts);
- if (id == NULL) {
- qerror_report(QERR_MISSING_PARAMETER, "id");
- return 1;
- }
-
- value = qemu_opt_get(opts, "type");
- if (!value) {
- qerror_report(QERR_MISSING_PARAMETER, "type");
- tpm_display_backend_drivers();
- return 1;
- }
-
- be = tpm_get_backend_driver(value);
- if (be == NULL) {
- qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
- "a TPM backend type");
- tpm_display_backend_drivers();
- return 1;
- }
-
- drv = be->create(opts, id);
- if (!drv) {
- return 1;
- }
-
- tpm_backend_open(drv, &local_err);
- if (local_err) {
- qerror_report_err(local_err);
- error_free(local_err);
- return 1;
- }
-
- QLIST_INSERT_HEAD(&tpm_backends, drv, list);
-
- return 0;
-}
-
-static int tpm_init_tpmdev(QemuOpts *opts, void *dummy)
-{
- return configure_tpm(opts);
-}
-
-/*
- * Walk the list of TPM backend drivers that are in use and call their
- * destroy function to have them cleaned up.
- */
-void tpm_cleanup(void)
-{
- TPMBackend *drv, *next;
-
- QLIST_FOREACH_SAFE(drv, &tpm_backends, list, next) {
- QLIST_REMOVE(drv, list);
- tpm_backend_destroy(drv);
- }
-}
-
-/*
- * Initialize the TPM. Process the tpmdev command line options describing the
- * TPM backend.
- */
-int tpm_init(void)
-{
- if (qemu_opts_foreach(qemu_find_opts("tpmdev"),
- tpm_init_tpmdev, NULL, 1) != 0) {
- return -1;
- }
-
- atexit(tpm_cleanup);
-
- return 0;
-}
-
-/*
- * Parse the TPM configuration options.
- * To display all available TPM backends the user may use '-tpmdev help'
- */
-int tpm_config_parse(QemuOptsList *opts_list, const char *optarg)
-{
- QemuOpts *opts;
-
- if (!strcmp(optarg, "help")) {
- tpm_display_backend_drivers();
- return -1;
- }
- opts = qemu_opts_parse(opts_list, optarg, 1);
- if (!opts) {
- return -1;
- }
- return 0;
-}
-
-#endif /* CONFIG_TPM */
-
-static const TPMDriverOps *tpm_driver_find_by_type(enum TpmType type)
-{
- int i;
-
- for (i = 0; i < TPM_MAX_DRIVERS && be_drivers[i] != NULL; i++) {
- if (be_drivers[i]->type == type) {
- return be_drivers[i];
- }
- }
- return NULL;
-}
-
-static TPMInfo *qmp_query_tpm_inst(TPMBackend *drv)
-{
- TPMInfo *res = g_new0(TPMInfo, 1);
- TPMPassthroughOptions *tpo;
-
- res->id = g_strdup(drv->id);
- res->model = drv->fe_model;
- res->options = g_new0(TpmTypeOptions, 1);
-
- switch (drv->ops->type) {
- case TPM_TYPE_PASSTHROUGH:
- res->options->kind = TPM_TYPE_OPTIONS_KIND_PASSTHROUGH;
- tpo = g_new0(TPMPassthroughOptions, 1);
- res->options->passthrough = tpo;
- if (drv->path) {
- tpo->path = g_strdup(drv->path);
- tpo->has_path = true;
- }
- if (drv->cancel_path) {
- tpo->cancel_path = g_strdup(drv->cancel_path);
- tpo->has_cancel_path = true;
- }
- break;
- case TPM_TYPE_MAX:
- break;
- }
-
- return res;
-}
-
-/*
- * Walk the list of active TPM backends and collect information about them
- * following the schema description in qapi-schema.json.
- */
-TPMInfoList *qmp_query_tpm(Error **errp)
-{
- TPMBackend *drv;
- TPMInfoList *info, *head = NULL, *cur_item = NULL;
-
- QLIST_FOREACH(drv, &tpm_backends, list) {
- if (!tpm_model_is_registered(drv->fe_model)) {
- continue;
- }
- info = g_new0(TPMInfoList, 1);
- info->value = qmp_query_tpm_inst(drv);
-
- if (!cur_item) {
- head = cur_item = info;
- } else {
- cur_item->next = info;
- cur_item = info;
- }
- }
-
- return head;
-}
-
-TpmTypeList *qmp_query_tpm_types(Error **errp)
-{
- unsigned int i = 0;
- TpmTypeList *head = NULL, *prev = NULL, *cur_item;
-
- for (i = 0; i < TPM_TYPE_MAX; i++) {
- if (!tpm_driver_find_by_type(i)) {
- continue;
- }
- cur_item = g_new0(TpmTypeList, 1);
- cur_item->value = i;
-
- if (prev) {
- prev->next = cur_item;
- }
- if (!head) {
- head = cur_item;
- }
- prev = cur_item;
- }
-
- return head;
-}
-
-TpmModelList *qmp_query_tpm_models(Error **errp)
-{
- unsigned int i = 0;
- TpmModelList *head = NULL, *prev = NULL, *cur_item;
-
- for (i = 0; i < TPM_MODEL_MAX; i++) {
- if (!tpm_model_is_registered(i)) {
- continue;
- }
- cur_item = g_new0(TpmModelList, 1);
- cur_item->value = i;
-
- if (prev) {
- prev->next = cur_item;
- }
- if (!head) {
- head = cur_item;
- }
- prev = cur_item;
- }
-
- return head;
-}
+++ /dev/null
-/*
- * common TPM backend driver functions
- *
- * Copyright (c) 2012-2013 IBM Corporation
- * Authors:
- * Stefan Berger <stefanb@us.ibm.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>
- */
-
-#include "tpm/tpm.h"
-#include "qemu/thread.h"
-#include "tpm_backend.h"
-
-void tpm_backend_thread_deliver_request(TPMBackendThread *tbt)
-{
- g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_PROCESS_CMD, NULL);
-}
-
-void tpm_backend_thread_create(TPMBackendThread *tbt,
- GFunc func, gpointer user_data)
-{
- if (!tbt->pool) {
- tbt->pool = g_thread_pool_new(func, user_data, 1, TRUE, NULL);
- g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_INIT, NULL);
- }
-}
-
-void tpm_backend_thread_end(TPMBackendThread *tbt)
-{
- if (tbt->pool) {
- g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_END, NULL);
- g_thread_pool_free(tbt->pool, FALSE, TRUE);
- tbt->pool = NULL;
- }
-}
-
-void tpm_backend_thread_tpm_reset(TPMBackendThread *tbt,
- GFunc func, gpointer user_data)
-{
- if (!tbt->pool) {
- tpm_backend_thread_create(tbt, func, user_data);
- } else {
- g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_TPM_RESET,
- NULL);
- }
-}
+++ /dev/null
-/*
- * common TPM backend driver functions
- *
- * Copyright (c) 2012-2013 IBM Corporation
- * Authors:
- * Stefan Berger <stefanb@us.ibm.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>
- */
-
-#ifndef TPM_TPM_BACKEND_H
-#define TPM_TPM_BACKEND_H
-
-#include <glib.h>
-
-typedef struct TPMBackendThread {
- GThreadPool *pool;
-} TPMBackendThread;
-
-void tpm_backend_thread_deliver_request(TPMBackendThread *tbt);
-void tpm_backend_thread_create(TPMBackendThread *tbt,
- GFunc func, gpointer user_data);
-void tpm_backend_thread_end(TPMBackendThread *tbt);
-void tpm_backend_thread_tpm_reset(TPMBackendThread *tbt,
- GFunc func, gpointer user_data);
-
-typedef enum TPMBackendCmd {
- TPM_BACKEND_CMD_INIT = 1,
- TPM_BACKEND_CMD_PROCESS_CMD,
- TPM_BACKEND_CMD_END,
- TPM_BACKEND_CMD_TPM_RESET,
-} TPMBackendCmd;
-
-#endif /* TPM_TPM_BACKEND_H */
+++ /dev/null
-/*
- * TPM configuration
- *
- * Copyright (C) 2011-2013 IBM Corporation
- *
- * Authors:
- * Stefan Berger <stefanb@us.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- */
-#ifndef TPM_TPM_INT_H
-#define TPM_TPM_INT_H
-
-#include "exec/memory.h"
-#include "tpm/tpm_tis.h"
-
-/* overall state of the TPM interface */
-struct TPMState {
- ISADevice busdev;
- MemoryRegion mmio;
-
- union {
- TPMTISEmuState tis;
- } s;
-
- uint8_t locty_number;
- TPMLocality *locty_data;
-
- char *backend;
- TPMBackend *be_driver;
-};
-
-#define TPM(obj) OBJECT_CHECK(TPMState, (obj), TYPE_TPM_TIS)
-
-struct TPMDriverOps {
- enum TpmType type;
- /* get a descriptive text of the backend to display to the user */
- const char *(*desc)(void);
-
- TPMBackend *(*create)(QemuOpts *opts, const char *id);
- void (*destroy)(TPMBackend *t);
-
- /* initialize the backend */
- int (*init)(TPMBackend *t, TPMState *s, TPMRecvDataCB *datacb);
- /* start up the TPM on the backend */
- int (*startup_tpm)(TPMBackend *t);
- /* returns true if nothing will ever answer TPM requests */
- bool (*had_startup_error)(TPMBackend *t);
-
- size_t (*realloc_buffer)(TPMSizedBuffer *sb);
-
- void (*deliver_request)(TPMBackend *t);
-
- void (*reset)(TPMBackend *t);
-
- void (*cancel_cmd)(TPMBackend *t);
-
- bool (*get_tpm_established_flag)(TPMBackend *t);
-};
-
-struct tpm_req_hdr {
- uint16_t tag;
- uint32_t len;
- uint32_t ordinal;
-} QEMU_PACKED;
-
-struct tpm_resp_hdr {
- uint16_t tag;
- uint32_t len;
- uint32_t errcode;
-} QEMU_PACKED;
-
-#define TPM_TAG_RQU_COMMAND 0xc1
-#define TPM_TAG_RQU_AUTH1_COMMAND 0xc2
-#define TPM_TAG_RQU_AUTH2_COMMAND 0xc3
-
-#define TPM_TAG_RSP_COMMAND 0xc4
-#define TPM_TAG_RSP_AUTH1_COMMAND 0xc5
-#define TPM_TAG_RSP_AUTH2_COMMAND 0xc6
-
-#define TPM_FAIL 9
-
-#define TPM_ORD_GetTicks 0xf1
-
-TPMBackend *qemu_find_tpm(const char *id);
-int tpm_register_model(enum TpmModel model);
-int tpm_register_driver(const TPMDriverOps *tdo);
-void tpm_display_backend_drivers(void);
-const TPMDriverOps *tpm_get_backend_driver(const char *type);
-void tpm_write_fatal_error_response(uint8_t *out, uint32_t out_len);
-
-extern const TPMDriverOps tpm_passthrough_driver;
-
-#endif /* TPM_TPM_INT_H */
+++ /dev/null
-/*
- * passthrough TPM driver
- *
- * Copyright (c) 2010 - 2013 IBM Corporation
- * Authors:
- * Stefan Berger <stefanb@us.ibm.com>
- *
- * Copyright (C) 2011 IAIK, Graz University of Technology
- * Author: Andreas Niederl
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>
- */
-
-#include <dirent.h>
-
-#include "qemu-common.h"
-#include "qapi/error.h"
-#include "qemu/sockets.h"
-#include "backends/tpm.h"
-#include "tpm_int.h"
-#include "hw/hw.h"
-#include "hw/i386/pc.h"
-#include "tpm_tis.h"
-#include "tpm_backend.h"
-
-/* #define DEBUG_TPM */
-
-#ifdef DEBUG_TPM
-#define DPRINTF(fmt, ...) \
- do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
-#else
-#define DPRINTF(fmt, ...) \
- do { } while (0)
-#endif
-
-#define TYPE_TPM_PASSTHROUGH "tpm-passthrough"
-#define TPM_PASSTHROUGH(obj) \
- OBJECT_CHECK(TPMPassthruState, (obj), TYPE_TPM_PASSTHROUGH)
-
-/* data structures */
-typedef struct TPMPassthruThreadParams {
- TPMState *tpm_state;
-
- TPMRecvDataCB *recv_data_callback;
- TPMBackend *tb;
-} TPMPassthruThreadParams;
-
-struct TPMPassthruState {
- TPMBackend parent;
-
- TPMBackendThread tbt;
-
- TPMPassthruThreadParams tpm_thread_params;
-
- char *tpm_dev;
- int tpm_fd;
- bool tpm_executing;
- bool tpm_op_canceled;
- int cancel_fd;
- bool had_startup_error;
-};
-
-typedef struct TPMPassthruState TPMPassthruState;
-
-#define TPM_PASSTHROUGH_DEFAULT_DEVICE "/dev/tpm0"
-
-/* functions */
-
-static void tpm_passthrough_cancel_cmd(TPMBackend *tb);
-
-static int tpm_passthrough_unix_write(int fd, const uint8_t *buf, uint32_t len)
-{
- return send_all(fd, buf, len);
-}
-
-static int tpm_passthrough_unix_read(int fd, uint8_t *buf, uint32_t len)
-{
- return recv_all(fd, buf, len, true);
-}
-
-static uint32_t tpm_passthrough_get_size_from_buffer(const uint8_t *buf)
-{
- struct tpm_resp_hdr *resp = (struct tpm_resp_hdr *)buf;
-
- return be32_to_cpu(resp->len);
-}
-
-static int tpm_passthrough_unix_tx_bufs(TPMPassthruState *tpm_pt,
- const uint8_t *in, uint32_t in_len,
- uint8_t *out, uint32_t out_len)
-{
- int ret;
-
- tpm_pt->tpm_op_canceled = false;
- tpm_pt->tpm_executing = true;
-
- ret = tpm_passthrough_unix_write(tpm_pt->tpm_fd, in, in_len);
- if (ret != in_len) {
- if (!tpm_pt->tpm_op_canceled ||
- (tpm_pt->tpm_op_canceled && errno != ECANCELED)) {
- error_report("tpm_passthrough: error while transmitting data "
- "to TPM: %s (%i)\n",
- strerror(errno), errno);
- }
- goto err_exit;
- }
-
- tpm_pt->tpm_executing = false;
-
- ret = tpm_passthrough_unix_read(tpm_pt->tpm_fd, out, out_len);
- if (ret < 0) {
- if (!tpm_pt->tpm_op_canceled ||
- (tpm_pt->tpm_op_canceled && errno != ECANCELED)) {
- error_report("tpm_passthrough: error while reading data from "
- "TPM: %s (%i)\n",
- strerror(errno), errno);
- }
- } else if (ret < sizeof(struct tpm_resp_hdr) ||
- tpm_passthrough_get_size_from_buffer(out) != ret) {
- ret = -1;
- error_report("tpm_passthrough: received invalid response "
- "packet from TPM\n");
- }
-
-err_exit:
- if (ret < 0) {
- tpm_write_fatal_error_response(out, out_len);
- }
-
- tpm_pt->tpm_executing = false;
-
- return ret;
-}
-
-static int tpm_passthrough_unix_transfer(TPMPassthruState *tpm_pt,
- const TPMLocality *locty_data)
-{
- return tpm_passthrough_unix_tx_bufs(tpm_pt,
- locty_data->w_buffer.buffer,
- locty_data->w_offset,
- locty_data->r_buffer.buffer,
- locty_data->r_buffer.size);
-}
-
-static void tpm_passthrough_worker_thread(gpointer data,
- gpointer user_data)
-{
- TPMPassthruThreadParams *thr_parms = user_data;
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(thr_parms->tb);
- TPMBackendCmd cmd = (TPMBackendCmd)data;
-
- DPRINTF("tpm_passthrough: processing command type %d\n", cmd);
-
- switch (cmd) {
- case TPM_BACKEND_CMD_PROCESS_CMD:
- tpm_passthrough_unix_transfer(tpm_pt,
- thr_parms->tpm_state->locty_data);
-
- thr_parms->recv_data_callback(thr_parms->tpm_state,
- thr_parms->tpm_state->locty_number);
- break;
- case TPM_BACKEND_CMD_INIT:
- case TPM_BACKEND_CMD_END:
- case TPM_BACKEND_CMD_TPM_RESET:
- /* nothing to do */
- break;
- }
-}
-
-/*
- * Start the TPM (thread). If it had been started before, then terminate
- * and start it again.
- */
-static int tpm_passthrough_startup_tpm(TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- /* terminate a running TPM */
- tpm_backend_thread_end(&tpm_pt->tbt);
-
- tpm_backend_thread_create(&tpm_pt->tbt,
- tpm_passthrough_worker_thread,
- &tpm_pt->tpm_thread_params);
-
- return 0;
-}
-
-static void tpm_passthrough_reset(TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- DPRINTF("tpm_passthrough: CALL TO TPM_RESET!\n");
-
- tpm_passthrough_cancel_cmd(tb);
-
- tpm_backend_thread_end(&tpm_pt->tbt);
-
- tpm_pt->had_startup_error = false;
-}
-
-static int tpm_passthrough_init(TPMBackend *tb, TPMState *s,
- TPMRecvDataCB *recv_data_cb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- tpm_pt->tpm_thread_params.tpm_state = s;
- tpm_pt->tpm_thread_params.recv_data_callback = recv_data_cb;
- tpm_pt->tpm_thread_params.tb = tb;
-
- return 0;
-}
-
-static bool tpm_passthrough_get_tpm_established_flag(TPMBackend *tb)
-{
- return false;
-}
-
-static bool tpm_passthrough_get_startup_error(TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- return tpm_pt->had_startup_error;
-}
-
-static size_t tpm_passthrough_realloc_buffer(TPMSizedBuffer *sb)
-{
- size_t wanted_size = 4096; /* Linux tpm.c buffer size */
-
- if (sb->size != wanted_size) {
- sb->buffer = g_realloc(sb->buffer, wanted_size);
- sb->size = wanted_size;
- }
- return sb->size;
-}
-
-static void tpm_passthrough_deliver_request(TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- tpm_backend_thread_deliver_request(&tpm_pt->tbt);
-}
-
-static void tpm_passthrough_cancel_cmd(TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
- 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) {
- error_report("Canceling TPM command failed: %s\n",
- strerror(errno));
- } else {
- tpm_pt->tpm_op_canceled = true;
- }
- } else {
- error_report("Cannot cancel TPM command due to missing "
- "TPM sysfs cancel entry");
- }
- }
-}
-
-static const char *tpm_passthrough_create_desc(void)
-{
- return "Passthrough TPM backend driver";
-}
-
-/*
- * A basic test of a TPM device. We expect a well formatted response header
- * (error response is fine) within one second.
- */
-static int tpm_passthrough_test_tpmdev(int fd)
-{
- struct tpm_req_hdr req = {
- .tag = cpu_to_be16(TPM_TAG_RQU_COMMAND),
- .len = cpu_to_be32(sizeof(req)),
- .ordinal = cpu_to_be32(TPM_ORD_GetTicks),
- };
- struct tpm_resp_hdr *resp;
- fd_set readfds;
- int n;
- struct timeval tv = {
- .tv_sec = 1,
- .tv_usec = 0,
- };
- unsigned char buf[1024];
-
- n = write(fd, &req, sizeof(req));
- if (n < 0) {
- return errno;
- }
- if (n != sizeof(req)) {
- return EFAULT;
- }
-
- FD_ZERO(&readfds);
- FD_SET(fd, &readfds);
-
- /* wait for a second */
- n = select(fd + 1, &readfds, NULL, NULL, &tv);
- if (n != 1) {
- return errno;
- }
-
- n = read(fd, &buf, sizeof(buf));
- if (n < sizeof(struct tpm_resp_hdr)) {
- return EFAULT;
- }
-
- resp = (struct tpm_resp_hdr *)buf;
- /* check the header */
- if (be16_to_cpu(resp->tag) != TPM_TAG_RSP_COMMAND ||
- be32_to_cpu(resp->len) != n) {
- return EBADMSG;
- }
-
- return 0;
-}
-
-/*
- * Check whether the given base path, e.g., /sys/class/misc/tpm0/device,
- * is the sysfs directory of a TPM. A TPM sysfs directory should be uniquely
- * recognizable by the file entries 'pcrs' and 'cancel'.
- * Upon success 'true' is returned and the basebath buffer has '/cancel'
- * appended.
- */
-static bool tpm_passthrough_check_sysfs_cancel(char *basepath, size_t bufsz)
-{
- char path[PATH_MAX];
- struct stat statbuf;
-
- snprintf(path, sizeof(path), "%s/pcrs", basepath);
- if (stat(path, &statbuf) == -1 || !S_ISREG(statbuf.st_mode)) {
- return false;
- }
-
- snprintf(path, sizeof(path), "%s/cancel", basepath);
- if (stat(path, &statbuf) == -1 || !S_ISREG(statbuf.st_mode)) {
- return false;
- }
-
- strncpy(basepath, path, bufsz);
-
- return true;
-}
-
-/*
- * 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.
- */
-static int tpm_passthrough_open_sysfs_cancel(TPMBackend *tb)
-{
- int fd = -1;
- unsigned int idx;
- DIR *pnp_dir;
- char path[PATH_MAX];
- struct dirent entry, *result;
- int len;
-
- 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;
- }
-
- snprintf(path, sizeof(path), "/sys/class/misc");
- pnp_dir = opendir(path);
- if (pnp_dir != NULL) {
- while (readdir_r(pnp_dir, &entry, &result) == 0 &&
- result != NULL) {
- /*
- * only allow /sys/class/misc/tpm%u type of paths
- */
- if (sscanf(entry.d_name, "tpm%u%n", &idx, &len) < 1 ||
- len <= strlen("tpm") ||
- len != strlen(entry.d_name)) {
- continue;
- }
-
- snprintf(path, sizeof(path), "/sys/class/misc/%s/device",
- entry.d_name);
- if (!tpm_passthrough_check_sysfs_cancel(path, sizeof(path))) {
- continue;
- }
-
- fd = qemu_open(path, O_WRONLY);
- break;
- }
- closedir(pnp_dir);
- }
-
- if (fd >= 0) {
- tb->cancel_path = g_strdup(path);
- }
-
- return fd;
-}
-
-static int tpm_passthrough_handle_device_opts(QemuOpts *opts, TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
- const char *value;
-
- value = qemu_opt_get(opts, "cancel-path");
- if (value) {
- tb->cancel_path = g_strdup(value);
- }
-
- value = qemu_opt_get(opts, "path");
- if (!value) {
- value = TPM_PASSTHROUGH_DEFAULT_DEVICE;
- }
-
- tpm_pt->tpm_dev = g_strdup(value);
-
- tb->path = g_strdup(tpm_pt->tpm_dev);
-
- tpm_pt->tpm_fd = qemu_open(tpm_pt->tpm_dev, O_RDWR);
- if (tpm_pt->tpm_fd < 0) {
- error_report("Cannot access TPM device using '%s': %s\n",
- tpm_pt->tpm_dev, strerror(errno));
- goto err_free_parameters;
- }
-
- if (tpm_passthrough_test_tpmdev(tpm_pt->tpm_fd)) {
- error_report("'%s' is not a TPM device.\n",
- tpm_pt->tpm_dev);
- goto err_close_tpmdev;
- }
-
- return 0;
-
- err_close_tpmdev:
- qemu_close(tpm_pt->tpm_fd);
- tpm_pt->tpm_fd = -1;
-
- err_free_parameters:
- g_free(tb->path);
- tb->path = NULL;
-
- g_free(tpm_pt->tpm_dev);
- tpm_pt->tpm_dev = NULL;
-
- return 1;
-}
-
-static TPMBackend *tpm_passthrough_create(QemuOpts *opts, const char *id)
-{
- Object *obj = object_new(TYPE_TPM_PASSTHROUGH);
- TPMBackend *tb = TPM_BACKEND(obj);
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- 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;
- }
-
- tpm_pt->cancel_fd = tpm_passthrough_open_sysfs_cancel(tb);
- if (tpm_pt->cancel_fd < 0) {
- goto err_exit;
- }
-
- return tb;
-
-err_exit:
- g_free(tb->id);
-
- return NULL;
-}
-
-static void tpm_passthrough_destroy(TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- tpm_passthrough_cancel_cmd(tb);
-
- tpm_backend_thread_end(&tpm_pt->tbt);
-
- qemu_close(tpm_pt->tpm_fd);
- qemu_close(tpm_pt->cancel_fd);
-
- g_free(tb->id);
- g_free(tb->path);
- g_free(tb->cancel_path);
- g_free(tpm_pt->tpm_dev);
-}
-
-const TPMDriverOps tpm_passthrough_driver = {
- .type = TPM_TYPE_PASSTHROUGH,
- .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,
-};
-
-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,
-};
-
-static void tpm_passthrough_register(void)
-{
- type_register_static(&tpm_passthrough_info);
- tpm_register_driver(&tpm_passthrough_driver);
-}
-
-type_init(tpm_passthrough_register)
+++ /dev/null
-/*
- * tpm_tis.c - QEMU's TPM TIS interface emulator
- *
- * Copyright (C) 2006,2010-2013 IBM Corporation
- *
- * Authors:
- * Stefan Berger <stefanb@us.ibm.com>
- * David Safford <safford@us.ibm.com>
- *
- * Xen 4 support: Andrease Niederl <andreas.niederl@iaik.tugraz.at>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
- * Implementation of the TIS interface according to specs found at
- * http://www.trustedcomputinggroup.org. This implementation currently
- * supports version 1.21, revision 1.0.
- * In the developers menu choose the PC Client section then find the TIS
- * specification.
- */
-
-#include "backends/tpm.h"
-#include "tpm_int.h"
-#include "block/block.h"
-#include "exec/address-spaces.h"
-#include "hw/hw.h"
-#include "hw/i386/pc.h"
-#include "hw/pci/pci_ids.h"
-#include "tpm/tpm_tis.h"
-#include "qemu-common.h"
-
-/*#define DEBUG_TIS */
-
-#ifdef DEBUG_TIS
-#define DPRINTF(fmt, ...) \
- do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
-#else
-#define DPRINTF(fmt, ...) \
- do { } while (0)
-#endif
-
-/* whether the STS interrupt is supported */
-#define RAISE_STS_IRQ
-
-/* tis registers */
-#define TPM_TIS_REG_ACCESS 0x00
-#define TPM_TIS_REG_INT_ENABLE 0x08
-#define TPM_TIS_REG_INT_VECTOR 0x0c
-#define TPM_TIS_REG_INT_STATUS 0x10
-#define TPM_TIS_REG_INTF_CAPABILITY 0x14
-#define TPM_TIS_REG_STS 0x18
-#define TPM_TIS_REG_DATA_FIFO 0x24
-#define TPM_TIS_REG_DID_VID 0xf00
-#define TPM_TIS_REG_RID 0xf04
-
-/* vendor-specific registers */
-#define TPM_TIS_REG_DEBUG 0xf90
-
-#define TPM_TIS_STS_VALID (1 << 7)
-#define TPM_TIS_STS_COMMAND_READY (1 << 6)
-#define TPM_TIS_STS_TPM_GO (1 << 5)
-#define TPM_TIS_STS_DATA_AVAILABLE (1 << 4)
-#define TPM_TIS_STS_EXPECT (1 << 3)
-#define TPM_TIS_STS_RESPONSE_RETRY (1 << 1)
-
-#define TPM_TIS_BURST_COUNT_SHIFT 8
-#define TPM_TIS_BURST_COUNT(X) \
- ((X) << TPM_TIS_BURST_COUNT_SHIFT)
-
-#define TPM_TIS_ACCESS_TPM_REG_VALID_STS (1 << 7)
-#define TPM_TIS_ACCESS_ACTIVE_LOCALITY (1 << 5)
-#define TPM_TIS_ACCESS_BEEN_SEIZED (1 << 4)
-#define TPM_TIS_ACCESS_SEIZE (1 << 3)
-#define TPM_TIS_ACCESS_PENDING_REQUEST (1 << 2)
-#define TPM_TIS_ACCESS_REQUEST_USE (1 << 1)
-#define TPM_TIS_ACCESS_TPM_ESTABLISHMENT (1 << 0)
-
-#define TPM_TIS_INT_ENABLED (1 << 31)
-#define TPM_TIS_INT_DATA_AVAILABLE (1 << 0)
-#define TPM_TIS_INT_STS_VALID (1 << 1)
-#define TPM_TIS_INT_LOCALITY_CHANGED (1 << 2)
-#define TPM_TIS_INT_COMMAND_READY (1 << 7)
-
-#define TPM_TIS_INT_POLARITY_MASK (3 << 3)
-#define TPM_TIS_INT_POLARITY_LOW_LEVEL (1 << 3)
-
-#ifndef RAISE_STS_IRQ
-
-#define TPM_TIS_INTERRUPTS_SUPPORTED (TPM_TIS_INT_LOCALITY_CHANGED | \
- TPM_TIS_INT_DATA_AVAILABLE | \
- TPM_TIS_INT_COMMAND_READY)
-
-#else
-
-#define TPM_TIS_INTERRUPTS_SUPPORTED (TPM_TIS_INT_LOCALITY_CHANGED | \
- TPM_TIS_INT_DATA_AVAILABLE | \
- TPM_TIS_INT_STS_VALID | \
- TPM_TIS_INT_COMMAND_READY)
-
-#endif
-
-#define TPM_TIS_CAP_INTERRUPT_LOW_LEVEL (1 << 4) /* support is mandatory */
-#define TPM_TIS_CAPABILITIES_SUPPORTED (TPM_TIS_CAP_INTERRUPT_LOW_LEVEL | \
- TPM_TIS_INTERRUPTS_SUPPORTED)
-
-#define TPM_TIS_TPM_DID 0x0001
-#define TPM_TIS_TPM_VID PCI_VENDOR_ID_IBM
-#define TPM_TIS_TPM_RID 0x0001
-
-#define TPM_TIS_NO_DATA_BYTE 0xff
-
-/* local prototypes */
-
-static uint64_t tpm_tis_mmio_read(void *opaque, hwaddr addr,
- unsigned size);
-
-/* utility functions */
-
-static uint8_t tpm_tis_locality_from_addr(hwaddr addr)
-{
- return (uint8_t)((addr >> TPM_TIS_LOCALITY_SHIFT) & 0x7);
-}
-
-static uint32_t tpm_tis_get_size_from_buffer(const TPMSizedBuffer *sb)
-{
- return be32_to_cpu(*(uint32_t *)&sb->buffer[2]);
-}
-
-static void tpm_tis_show_buffer(const TPMSizedBuffer *sb, const char *string)
-{
-#ifdef DEBUG_TIS
- uint32_t len, i;
-
- len = tpm_tis_get_size_from_buffer(sb);
- DPRINTF("tpm_tis: %s length = %d\n", string, len);
- for (i = 0; i < len; i++) {
- if (i && !(i % 16)) {
- DPRINTF("\n");
- }
- DPRINTF("%.2X ", sb->buffer[i]);
- }
- DPRINTF("\n");
-#endif
-}
-
-/*
- * Send a request to the TPM.
- */
-static void tpm_tis_tpm_send(TPMState *s, uint8_t locty)
-{
- TPMTISEmuState *tis = &s->s.tis;
-
- tpm_tis_show_buffer(&tis->loc[locty].w_buffer, "tpm_tis: To TPM");
-
- s->locty_number = locty;
- s->locty_data = &tis->loc[locty];
-
- /*
- * w_offset serves as length indicator for length of data;
- * it's reset when the response comes back
- */
- tis->loc[locty].state = TPM_TIS_STATE_EXECUTION;
-
- tpm_backend_deliver_request(s->be_driver);
-}
-
-/* raise an interrupt if allowed */
-static void tpm_tis_raise_irq(TPMState *s, uint8_t locty, uint32_t irqmask)
-{
- TPMTISEmuState *tis = &s->s.tis;
-
- if (!TPM_TIS_IS_VALID_LOCTY(locty)) {
- return;
- }
-
- if ((tis->loc[locty].inte & TPM_TIS_INT_ENABLED) &&
- (tis->loc[locty].inte & irqmask)) {
- DPRINTF("tpm_tis: Raising IRQ for flag %08x\n", irqmask);
- qemu_irq_raise(s->s.tis.irq);
- tis->loc[locty].ints |= irqmask;
- }
-}
-
-static uint32_t tpm_tis_check_request_use_except(TPMState *s, uint8_t locty)
-{
- uint8_t l;
-
- for (l = 0; l < TPM_TIS_NUM_LOCALITIES; l++) {
- if (l == locty) {
- continue;
- }
- if ((s->s.tis.loc[l].access & TPM_TIS_ACCESS_REQUEST_USE)) {
- return 1;
- }
- }
-
- return 0;
-}
-
-static void tpm_tis_new_active_locality(TPMState *s, uint8_t new_active_locty)
-{
- TPMTISEmuState *tis = &s->s.tis;
- bool change = (s->s.tis.active_locty != new_active_locty);
- bool is_seize;
- uint8_t mask;
-
- if (change && TPM_TIS_IS_VALID_LOCTY(s->s.tis.active_locty)) {
- is_seize = TPM_TIS_IS_VALID_LOCTY(new_active_locty) &&
- tis->loc[new_active_locty].access & TPM_TIS_ACCESS_SEIZE;
-
- if (is_seize) {
- mask = ~(TPM_TIS_ACCESS_ACTIVE_LOCALITY);
- } else {
- mask = ~(TPM_TIS_ACCESS_ACTIVE_LOCALITY|
- TPM_TIS_ACCESS_REQUEST_USE);
- }
- /* reset flags on the old active locality */
- tis->loc[s->s.tis.active_locty].access &= mask;
-
- if (is_seize) {
- tis->loc[tis->active_locty].access |= TPM_TIS_ACCESS_BEEN_SEIZED;
- }
- }
-
- tis->active_locty = new_active_locty;
-
- DPRINTF("tpm_tis: Active locality is now %d\n", s->s.tis.active_locty);
-
- if (TPM_TIS_IS_VALID_LOCTY(new_active_locty)) {
- /* set flags on the new active locality */
- tis->loc[new_active_locty].access |= TPM_TIS_ACCESS_ACTIVE_LOCALITY;
- tis->loc[new_active_locty].access &= ~(TPM_TIS_ACCESS_REQUEST_USE |
- TPM_TIS_ACCESS_SEIZE);
- }
-
- if (change) {
- tpm_tis_raise_irq(s, tis->active_locty, TPM_TIS_INT_LOCALITY_CHANGED);
- }
-}
-
-/* abort -- this function switches the locality */
-static void tpm_tis_abort(TPMState *s, uint8_t locty)
-{
- TPMTISEmuState *tis = &s->s.tis;
-
- tis->loc[locty].r_offset = 0;
- tis->loc[locty].w_offset = 0;
-
- DPRINTF("tpm_tis: tis_abort: new active locality is %d\n", tis->next_locty);
-
- /*
- * Need to react differently depending on who's aborting now and
- * which locality will become active afterwards.
- */
- if (tis->aborting_locty == tis->next_locty) {
- tis->loc[tis->aborting_locty].state = TPM_TIS_STATE_READY;
- tis->loc[tis->aborting_locty].sts = TPM_TIS_STS_COMMAND_READY;
- tpm_tis_raise_irq(s, tis->aborting_locty, TPM_TIS_INT_COMMAND_READY);
- }
-
- /* locality after abort is another one than the current one */
- tpm_tis_new_active_locality(s, tis->next_locty);
-
- tis->next_locty = TPM_TIS_NO_LOCALITY;
- /* nobody's aborting a command anymore */
- tis->aborting_locty = TPM_TIS_NO_LOCALITY;
-}
-
-/* prepare aborting current command */
-static void tpm_tis_prep_abort(TPMState *s, uint8_t locty, uint8_t newlocty)
-{
- TPMTISEmuState *tis = &s->s.tis;
- uint8_t busy_locty;
-
- tis->aborting_locty = locty;
- tis->next_locty = newlocty; /* locality after successful abort */
-
- /*
- * only abort a command using an interrupt if currently executing
- * a command AND if there's a valid connection to the vTPM.
- */
- for (busy_locty = 0; busy_locty < TPM_TIS_NUM_LOCALITIES; busy_locty++) {
- if (tis->loc[busy_locty].state == TPM_TIS_STATE_EXECUTION) {
- /*
- * request the backend to cancel. Some backends may not
- * support it
- */
- tpm_backend_cancel_cmd(s->be_driver);
- return;
- }
- }
-
- tpm_tis_abort(s, locty);
-}
-
-static void tpm_tis_receive_bh(void *opaque)
-{
- TPMState *s = opaque;
- TPMTISEmuState *tis = &s->s.tis;
- uint8_t locty = s->locty_number;
-
- tis->loc[locty].sts = TPM_TIS_STS_VALID | TPM_TIS_STS_DATA_AVAILABLE;
- tis->loc[locty].state = TPM_TIS_STATE_COMPLETION;
- tis->loc[locty].r_offset = 0;
- tis->loc[locty].w_offset = 0;
-
- if (TPM_TIS_IS_VALID_LOCTY(tis->next_locty)) {
- tpm_tis_abort(s, locty);
- }
-
-#ifndef RAISE_STS_IRQ
- tpm_tis_raise_irq(s, locty, TPM_TIS_INT_DATA_AVAILABLE);
-#else
- tpm_tis_raise_irq(s, locty,
- TPM_TIS_INT_DATA_AVAILABLE | TPM_TIS_INT_STS_VALID);
-#endif
-}
-
-/*
- * Callback from the TPM to indicate that the response was received.
- */
-static void tpm_tis_receive_cb(TPMState *s, uint8_t locty)
-{
- TPMTISEmuState *tis = &s->s.tis;
-
- assert(s->locty_number == locty);
-
- qemu_bh_schedule(tis->bh);
-}
-
-/*
- * Read a byte of response data
- */
-static uint32_t tpm_tis_data_read(TPMState *s, uint8_t locty)
-{
- TPMTISEmuState *tis = &s->s.tis;
- uint32_t ret = TPM_TIS_NO_DATA_BYTE;
- uint16_t len;
-
- if ((tis->loc[locty].sts & TPM_TIS_STS_DATA_AVAILABLE)) {
- len = tpm_tis_get_size_from_buffer(&tis->loc[locty].r_buffer);
-
- ret = tis->loc[locty].r_buffer.buffer[tis->loc[locty].r_offset++];
- if (tis->loc[locty].r_offset >= len) {
- /* got last byte */
- tis->loc[locty].sts = TPM_TIS_STS_VALID;
-#ifdef RAISE_STS_IRQ
- tpm_tis_raise_irq(s, locty, TPM_TIS_INT_STS_VALID);
-#endif
- }
- DPRINTF("tpm_tis: tpm_tis_data_read byte 0x%02x [%d]\n",
- ret, tis->loc[locty].r_offset-1);
- }
-
- return ret;
-}
-
-#ifdef DEBUG_TIS
-static void tpm_tis_dump_state(void *opaque, hwaddr addr)
-{
- static const unsigned regs[] = {
- TPM_TIS_REG_ACCESS,
- TPM_TIS_REG_INT_ENABLE,
- TPM_TIS_REG_INT_VECTOR,
- TPM_TIS_REG_INT_STATUS,
- TPM_TIS_REG_INTF_CAPABILITY,
- TPM_TIS_REG_STS,
- TPM_TIS_REG_DID_VID,
- TPM_TIS_REG_RID,
- 0xfff};
- int idx;
- uint8_t locty = tpm_tis_locality_from_addr(addr);
- hwaddr base = addr & ~0xfff;
- TPMState *s = opaque;
- TPMTISEmuState *tis = &s->s.tis;
-
- DPRINTF("tpm_tis: active locality : %d\n"
- "tpm_tis: state of locality %d : %d\n"
- "tpm_tis: register dump:\n",
- tis->active_locty,
- locty, tis->loc[locty].state);
-
- for (idx = 0; regs[idx] != 0xfff; idx++) {
- DPRINTF("tpm_tis: 0x%04x : 0x%08x\n", regs[idx],
- (uint32_t)tpm_tis_mmio_read(opaque, base + regs[idx], 4));
- }
-
- DPRINTF("tpm_tis: read offset : %d\n"
- "tpm_tis: result buffer : ",
- tis->loc[locty].r_offset);
- for (idx = 0;
- idx < tpm_tis_get_size_from_buffer(&tis->loc[locty].r_buffer);
- idx++) {
- DPRINTF("%c%02x%s",
- tis->loc[locty].r_offset == idx ? '>' : ' ',
- tis->loc[locty].r_buffer.buffer[idx],
- ((idx & 0xf) == 0xf) ? "\ntpm_tis: " : "");
- }
- DPRINTF("\n"
- "tpm_tis: write offset : %d\n"
- "tpm_tis: request buffer: ",
- tis->loc[locty].w_offset);
- for (idx = 0;
- idx < tpm_tis_get_size_from_buffer(&tis->loc[locty].w_buffer);
- idx++) {
- DPRINTF("%c%02x%s",
- tis->loc[locty].w_offset == idx ? '>' : ' ',
- tis->loc[locty].w_buffer.buffer[idx],
- ((idx & 0xf) == 0xf) ? "\ntpm_tis: " : "");
- }
- DPRINTF("\n");
-}
-#endif
-
-/*
- * Read a register of the TIS interface
- * See specs pages 33-63 for description of the registers
- */
-static uint64_t tpm_tis_mmio_read(void *opaque, hwaddr addr,
- unsigned size)
-{
- TPMState *s = opaque;
- TPMTISEmuState *tis = &s->s.tis;
- uint16_t offset = addr & 0xffc;
- uint8_t shift = (addr & 0x3) * 8;
- uint32_t val = 0xffffffff;
- uint8_t locty = tpm_tis_locality_from_addr(addr);
- uint32_t avail;
-
- if (tpm_backend_had_startup_error(s->be_driver)) {
- return val;
- }
-
- switch (offset) {
- case TPM_TIS_REG_ACCESS:
- /* never show the SEIZE flag even though we use it internally */
- val = tis->loc[locty].access & ~TPM_TIS_ACCESS_SEIZE;
- /* the pending flag is always calculated */
- if (tpm_tis_check_request_use_except(s, locty)) {
- val |= TPM_TIS_ACCESS_PENDING_REQUEST;
- }
- val |= !tpm_backend_get_tpm_established_flag(s->be_driver);
- break;
- case TPM_TIS_REG_INT_ENABLE:
- val = tis->loc[locty].inte;
- break;
- case TPM_TIS_REG_INT_VECTOR:
- val = tis->irq_num;
- break;
- case TPM_TIS_REG_INT_STATUS:
- val = tis->loc[locty].ints;
- break;
- case TPM_TIS_REG_INTF_CAPABILITY:
- val = TPM_TIS_CAPABILITIES_SUPPORTED;
- break;
- case TPM_TIS_REG_STS:
- if (tis->active_locty == locty) {
- if ((tis->loc[locty].sts & TPM_TIS_STS_DATA_AVAILABLE)) {
- val = TPM_TIS_BURST_COUNT(
- tpm_tis_get_size_from_buffer(&tis->loc[locty].r_buffer)
- - tis->loc[locty].r_offset) | tis->loc[locty].sts;
- } else {
- avail = tis->loc[locty].w_buffer.size
- - tis->loc[locty].w_offset;
- /*
- * byte-sized reads should not return 0x00 for 0x100
- * available bytes.
- */
- if (size == 1 && avail > 0xff) {
- avail = 0xff;
- }
- val = TPM_TIS_BURST_COUNT(avail) | tis->loc[locty].sts;
- }
- }
- break;
- case TPM_TIS_REG_DATA_FIFO:
- if (tis->active_locty == locty) {
- switch (tis->loc[locty].state) {
- case TPM_TIS_STATE_COMPLETION:
- val = tpm_tis_data_read(s, locty);
- break;
- default:
- val = TPM_TIS_NO_DATA_BYTE;
- break;
- }
- }
- break;
- case TPM_TIS_REG_DID_VID:
- val = (TPM_TIS_TPM_DID << 16) | TPM_TIS_TPM_VID;
- break;
- case TPM_TIS_REG_RID:
- val = TPM_TIS_TPM_RID;
- break;
-#ifdef DEBUG_TIS
- case TPM_TIS_REG_DEBUG:
- tpm_tis_dump_state(opaque, addr);
- break;
-#endif
- }
-
- if (shift) {
- val >>= shift;
- }
-
- DPRINTF("tpm_tis: read.%u(%08x) = %08x\n", size, (int)addr, (uint32_t)val);
-
- return val;
-}
-
-/*
- * Write a value to a register of the TIS interface
- * See specs pages 33-63 for description of the registers
- */
-static void tpm_tis_mmio_write_intern(void *opaque, hwaddr addr,
- uint64_t val, unsigned size,
- bool hw_access)
-{
- TPMState *s = opaque;
- TPMTISEmuState *tis = &s->s.tis;
- uint16_t off = addr & 0xfff;
- uint8_t locty = tpm_tis_locality_from_addr(addr);
- uint8_t active_locty, l;
- int c, set_new_locty = 1;
- uint16_t len;
-
- DPRINTF("tpm_tis: write.%u(%08x) = %08x\n", size, (int)addr, (uint32_t)val);
-
- if (locty == 4 && !hw_access) {
- DPRINTF("tpm_tis: Access to locality 4 only allowed from hardware\n");
- return;
- }
-
- if (tpm_backend_had_startup_error(s->be_driver)) {
- return;
- }
-
- switch (off) {
- case TPM_TIS_REG_ACCESS:
-
- if ((val & TPM_TIS_ACCESS_SEIZE)) {
- val &= ~(TPM_TIS_ACCESS_REQUEST_USE |
- TPM_TIS_ACCESS_ACTIVE_LOCALITY);
- }
-
- active_locty = tis->active_locty;
-
- if ((val & TPM_TIS_ACCESS_ACTIVE_LOCALITY)) {
- /* give up locality if currently owned */
- if (tis->active_locty == locty) {
- DPRINTF("tpm_tis: Releasing locality %d\n", locty);
-
- uint8_t newlocty = TPM_TIS_NO_LOCALITY;
- /* anybody wants the locality ? */
- for (c = TPM_TIS_NUM_LOCALITIES - 1; c >= 0; c--) {
- if ((tis->loc[c].access & TPM_TIS_ACCESS_REQUEST_USE)) {
- DPRINTF("tpm_tis: Locality %d requests use.\n", c);
- newlocty = c;
- break;
- }
- }
- DPRINTF("tpm_tis: TPM_TIS_ACCESS_ACTIVE_LOCALITY: "
- "Next active locality: %d\n",
- newlocty);
-
- if (TPM_TIS_IS_VALID_LOCTY(newlocty)) {
- set_new_locty = 0;
- tpm_tis_prep_abort(s, locty, newlocty);
- } else {
- active_locty = TPM_TIS_NO_LOCALITY;
- }
- } else {
- /* not currently the owner; clear a pending request */
- tis->loc[locty].access &= ~TPM_TIS_ACCESS_REQUEST_USE;
- }
- }
-
- if ((val & TPM_TIS_ACCESS_BEEN_SEIZED)) {
- tis->loc[locty].access &= ~TPM_TIS_ACCESS_BEEN_SEIZED;
- }
-
- if ((val & TPM_TIS_ACCESS_SEIZE)) {
- /*
- * allow seize if a locality is active and the requesting
- * locality is higher than the one that's active
- * OR
- * allow seize for requesting locality if no locality is
- * active
- */
- while ((TPM_TIS_IS_VALID_LOCTY(tis->active_locty) &&
- locty > tis->active_locty) ||
- !TPM_TIS_IS_VALID_LOCTY(tis->active_locty)) {
- bool higher_seize = FALSE;
-
- /* already a pending SEIZE ? */
- if ((tis->loc[locty].access & TPM_TIS_ACCESS_SEIZE)) {
- break;
- }
-
- /* check for ongoing seize by a higher locality */
- for (l = locty + 1; l < TPM_TIS_NUM_LOCALITIES; l++) {
- if ((tis->loc[l].access & TPM_TIS_ACCESS_SEIZE)) {
- higher_seize = TRUE;
- break;
- }
- }
-
- if (higher_seize) {
- break;
- }
-
- /* cancel any seize by a lower locality */
- for (l = 0; l < locty - 1; l++) {
- tis->loc[l].access &= ~TPM_TIS_ACCESS_SEIZE;
- }
-
- tis->loc[locty].access |= TPM_TIS_ACCESS_SEIZE;
- DPRINTF("tpm_tis: TPM_TIS_ACCESS_SEIZE: "
- "Locality %d seized from locality %d\n",
- locty, tis->active_locty);
- DPRINTF("tpm_tis: TPM_TIS_ACCESS_SEIZE: Initiating abort.\n");
- set_new_locty = 0;
- tpm_tis_prep_abort(s, tis->active_locty, locty);
- break;
- }
- }
-
- if ((val & TPM_TIS_ACCESS_REQUEST_USE)) {
- if (tis->active_locty != locty) {
- if (TPM_TIS_IS_VALID_LOCTY(tis->active_locty)) {
- tis->loc[locty].access |= TPM_TIS_ACCESS_REQUEST_USE;
- } else {
- /* no locality active -> make this one active now */
- active_locty = locty;
- }
- }
- }
-
- if (set_new_locty) {
- tpm_tis_new_active_locality(s, active_locty);
- }
-
- break;
- case TPM_TIS_REG_INT_ENABLE:
- if (tis->active_locty != locty) {
- break;
- }
-
- tis->loc[locty].inte = (val & (TPM_TIS_INT_ENABLED |
- TPM_TIS_INT_POLARITY_MASK |
- TPM_TIS_INTERRUPTS_SUPPORTED));
- break;
- case TPM_TIS_REG_INT_VECTOR:
- /* hard wired -- ignore */
- break;
- case TPM_TIS_REG_INT_STATUS:
- if (tis->active_locty != locty) {
- break;
- }
-
- /* clearing of interrupt flags */
- if (((val & TPM_TIS_INTERRUPTS_SUPPORTED)) &&
- (tis->loc[locty].ints & TPM_TIS_INTERRUPTS_SUPPORTED)) {
- tis->loc[locty].ints &= ~val;
- if (tis->loc[locty].ints == 0) {
- qemu_irq_lower(tis->irq);
- DPRINTF("tpm_tis: Lowering IRQ\n");
- }
- }
- tis->loc[locty].ints &= ~(val & TPM_TIS_INTERRUPTS_SUPPORTED);
- break;
- case TPM_TIS_REG_STS:
- if (tis->active_locty != locty) {
- break;
- }
-
- val &= (TPM_TIS_STS_COMMAND_READY | TPM_TIS_STS_TPM_GO |
- TPM_TIS_STS_RESPONSE_RETRY);
-
- if (val == TPM_TIS_STS_COMMAND_READY) {
- switch (tis->loc[locty].state) {
-
- case TPM_TIS_STATE_READY:
- tis->loc[locty].w_offset = 0;
- tis->loc[locty].r_offset = 0;
- break;
-
- case TPM_TIS_STATE_IDLE:
- tis->loc[locty].sts = TPM_TIS_STS_COMMAND_READY;
- tis->loc[locty].state = TPM_TIS_STATE_READY;
- tpm_tis_raise_irq(s, locty, TPM_TIS_INT_COMMAND_READY);
- break;
-
- case TPM_TIS_STATE_EXECUTION:
- case TPM_TIS_STATE_RECEPTION:
- /* abort currently running command */
- DPRINTF("tpm_tis: %s: Initiating abort.\n",
- __func__);
- tpm_tis_prep_abort(s, locty, locty);
- break;
-
- case TPM_TIS_STATE_COMPLETION:
- tis->loc[locty].w_offset = 0;
- tis->loc[locty].r_offset = 0;
- /* shortcut to ready state with C/R set */
- tis->loc[locty].state = TPM_TIS_STATE_READY;
- if (!(tis->loc[locty].sts & TPM_TIS_STS_COMMAND_READY)) {
- tis->loc[locty].sts = TPM_TIS_STS_COMMAND_READY;
- tpm_tis_raise_irq(s, locty, TPM_TIS_INT_COMMAND_READY);
- }
- tis->loc[locty].sts &= ~(TPM_TIS_STS_DATA_AVAILABLE);
- break;
-
- }
- } else if (val == TPM_TIS_STS_TPM_GO) {
- switch (tis->loc[locty].state) {
- case TPM_TIS_STATE_RECEPTION:
- if ((tis->loc[locty].sts & TPM_TIS_STS_EXPECT) == 0) {
- tpm_tis_tpm_send(s, locty);
- }
- break;
- default:
- /* ignore */
- break;
- }
- } else if (val == TPM_TIS_STS_RESPONSE_RETRY) {
- switch (tis->loc[locty].state) {
- case TPM_TIS_STATE_COMPLETION:
- tis->loc[locty].r_offset = 0;
- tis->loc[locty].sts = TPM_TIS_STS_VALID |
- TPM_TIS_STS_DATA_AVAILABLE;
- break;
- default:
- /* ignore */
- break;
- }
- }
- break;
- case TPM_TIS_REG_DATA_FIFO:
- /* data fifo */
- if (tis->active_locty != locty) {
- break;
- }
-
- if (tis->loc[locty].state == TPM_TIS_STATE_IDLE ||
- tis->loc[locty].state == TPM_TIS_STATE_EXECUTION ||
- tis->loc[locty].state == TPM_TIS_STATE_COMPLETION) {
- /* drop the byte */
- } else {
- DPRINTF("tpm_tis: Byte to send to TPM: %02x\n", (uint8_t)val);
- if (tis->loc[locty].state == TPM_TIS_STATE_READY) {
- tis->loc[locty].state = TPM_TIS_STATE_RECEPTION;
- tis->loc[locty].sts = TPM_TIS_STS_EXPECT | TPM_TIS_STS_VALID;
- }
-
- if ((tis->loc[locty].sts & TPM_TIS_STS_EXPECT)) {
- if (tis->loc[locty].w_offset < tis->loc[locty].w_buffer.size) {
- tis->loc[locty].w_buffer.
- buffer[tis->loc[locty].w_offset++] = (uint8_t)val;
- } else {
- tis->loc[locty].sts = TPM_TIS_STS_VALID;
- }
- }
-
- /* check for complete packet */
- if (tis->loc[locty].w_offset > 5 &&
- (tis->loc[locty].sts & TPM_TIS_STS_EXPECT)) {
- /* we have a packet length - see if we have all of it */
-#ifdef RAISE_STS_IRQ
- bool needIrq = !(tis->loc[locty].sts & TPM_TIS_STS_VALID);
-#endif
- len = tpm_tis_get_size_from_buffer(&tis->loc[locty].w_buffer);
- if (len > tis->loc[locty].w_offset) {
- tis->loc[locty].sts = TPM_TIS_STS_EXPECT |
- TPM_TIS_STS_VALID;
- } else {
- /* packet complete */
- tis->loc[locty].sts = TPM_TIS_STS_VALID;
- }
-#ifdef RAISE_STS_IRQ
- if (needIrq) {
- tpm_tis_raise_irq(s, locty, TPM_TIS_INT_STS_VALID);
- }
-#endif
- }
- }
- break;
- }
-}
-
-static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
- uint64_t val, unsigned size)
-{
- return tpm_tis_mmio_write_intern(opaque, addr, val, size, false);
-}
-
-static const MemoryRegionOps tpm_tis_memory_ops = {
- .read = tpm_tis_mmio_read,
- .write = tpm_tis_mmio_write,
- .endianness = DEVICE_LITTLE_ENDIAN,
- .valid = {
- .min_access_size = 1,
- .max_access_size = 4,
- },
-};
-
-static int tpm_tis_do_startup_tpm(TPMState *s)
-{
- return tpm_backend_startup_tpm(s->be_driver);
-}
-
-/*
- * This function is called when the machine starts, resets or due to
- * S3 resume.
- */
-static void tpm_tis_reset(DeviceState *dev)
-{
- TPMState *s = TPM(dev);
- TPMTISEmuState *tis = &s->s.tis;
- int c;
-
- tpm_backend_reset(s->be_driver);
-
- tis->active_locty = TPM_TIS_NO_LOCALITY;
- tis->next_locty = TPM_TIS_NO_LOCALITY;
- tis->aborting_locty = TPM_TIS_NO_LOCALITY;
-
- for (c = 0; c < TPM_TIS_NUM_LOCALITIES; c++) {
- tis->loc[c].access = TPM_TIS_ACCESS_TPM_REG_VALID_STS;
- tis->loc[c].sts = 0;
- tis->loc[c].inte = TPM_TIS_INT_POLARITY_LOW_LEVEL;
- tis->loc[c].ints = 0;
- tis->loc[c].state = TPM_TIS_STATE_IDLE;
-
- tis->loc[c].w_offset = 0;
- tpm_backend_realloc_buffer(s->be_driver, &tis->loc[c].w_buffer);
- tis->loc[c].r_offset = 0;
- tpm_backend_realloc_buffer(s->be_driver, &tis->loc[c].r_buffer);
- }
-
- tpm_tis_do_startup_tpm(s);
-}
-
-static const VMStateDescription vmstate_tpm_tis = {
- .name = "tpm",
- .unmigratable = 1,
-};
-
-static Property tpm_tis_properties[] = {
- DEFINE_PROP_UINT32("irq", TPMState,
- s.tis.irq_num, TPM_TIS_IRQ),
- DEFINE_PROP_STRING("tpmdev", TPMState, backend),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void tpm_tis_realizefn(DeviceState *dev, Error **errp)
-{
- TPMState *s = TPM(dev);
- TPMTISEmuState *tis = &s->s.tis;
-
- s->be_driver = qemu_find_tpm(s->backend);
- if (!s->be_driver) {
- error_setg(errp, "tpm_tis: backend driver with id %s could not be "
- "found", s->backend);
- return;
- }
-
- s->be_driver->fe_model = TPM_MODEL_TPM_TIS;
-
- if (tpm_backend_init(s->be_driver, s, tpm_tis_receive_cb)) {
- error_setg(errp, "tpm_tis: backend driver with id %s could not be "
- "initialized", s->backend);
- return;
- }
-
- if (tis->irq_num > 15) {
- error_setg(errp, "tpm_tis: IRQ %d for TPM TIS is outside valid range "
- "of 0 to 15.\n", tis->irq_num);
- return;
- }
-
- tis->bh = qemu_bh_new(tpm_tis_receive_bh, s);
-
- isa_init_irq(&s->busdev, &tis->irq, tis->irq_num);
-}
-
-static void tpm_tis_initfn(Object *obj)
-{
- ISADevice *dev = ISA_DEVICE(obj);
- TPMState *s = TPM(obj);
-
- memory_region_init_io(&s->mmio, &tpm_tis_memory_ops, s, "tpm-tis-mmio",
- TPM_TIS_NUM_LOCALITIES << TPM_TIS_LOCALITY_SHIFT);
- memory_region_add_subregion(isa_address_space(dev), TPM_TIS_ADDR_BASE,
- &s->mmio);
-}
-
-static void tpm_tis_uninitfn(Object *obj)
-{
- TPMState *s = TPM(obj);
-
- memory_region_del_subregion(get_system_memory(), &s->mmio);
- memory_region_destroy(&s->mmio);
-}
-
-static void tpm_tis_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
-
- dc->realize = tpm_tis_realizefn;
- dc->props = tpm_tis_properties;
- dc->reset = tpm_tis_reset;
- dc->vmsd = &vmstate_tpm_tis;
-}
-
-static const TypeInfo tpm_tis_info = {
- .name = TYPE_TPM_TIS,
- .parent = TYPE_ISA_DEVICE,
- .instance_size = sizeof(TPMState),
- .instance_init = tpm_tis_initfn,
- .instance_finalize = tpm_tis_uninitfn,
- .class_init = tpm_tis_class_init,
-};
-
-static void tpm_tis_register(void)
-{
- type_register_static(&tpm_tis_info);
- tpm_register_model(TPM_MODEL_TPM_TIS);
-}
-
-type_init(tpm_tis_register)
+++ /dev/null
-/*
- * tpm_tis.h - QEMU's TPM TIS interface emulator
- *
- * Copyright (C) 2006, 2010-2013 IBM Corporation
- *
- * Authors:
- * Stefan Berger <stefanb@us.ibm.com>
- * David Safford <safford@us.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
- * Implementation of the TIS interface according to specs found at
- * http://www.trustedcomputinggroup.org
- *
- */
-#ifndef TPM_TPM_TIS_H
-#define TPM_TPM_TIS_H
-
-#include "hw/isa/isa.h"
-#include "qemu-common.h"
-
-#define TPM_TIS_ADDR_BASE 0xFED40000
-
-#define TPM_TIS_NUM_LOCALITIES 5 /* per spec */
-#define TPM_TIS_LOCALITY_SHIFT 12
-#define TPM_TIS_NO_LOCALITY 0xff
-
-#define TPM_TIS_IS_VALID_LOCTY(x) ((x) < TPM_TIS_NUM_LOCALITIES)
-
-#define TPM_TIS_IRQ 5
-
-#define TPM_TIS_BUFFER_MAX 4096
-
-#define TYPE_TPM_TIS "tpm-tis"
-
-
-struct TPMSizedBuffer {
- uint32_t size;
- uint8_t *buffer;
-};
-
-typedef enum {
- TPM_TIS_STATE_IDLE = 0,
- TPM_TIS_STATE_READY,
- TPM_TIS_STATE_COMPLETION,
- TPM_TIS_STATE_EXECUTION,
- TPM_TIS_STATE_RECEPTION,
-} TPMTISState;
-
-/* locality data -- all fields are persisted */
-typedef struct TPMLocality {
- TPMTISState state;
- uint8_t access;
- uint8_t sts;
- uint32_t inte;
- uint32_t ints;
-
- uint16_t w_offset;
- uint16_t r_offset;
- TPMSizedBuffer w_buffer;
- TPMSizedBuffer r_buffer;
-} TPMLocality;
-
-typedef struct TPMTISEmuState {
- QEMUBH *bh;
- uint32_t offset;
- uint8_t buf[TPM_TIS_BUFFER_MAX];
-
- uint8_t active_locty;
- uint8_t aborting_locty;
- uint8_t next_locty;
-
- TPMLocality loc[TPM_TIS_NUM_LOCALITIES];
-
- qemu_irq irq;
- uint32_t irq_num;
-} TPMTISEmuState;
-
-#endif /* TPM_TPM_TIS_H */
#include "sysemu/blockdev.h"
#include "hw/block/block.h"
#include "migration/block.h"
-#include "tpm/tpm.h"
+#include "sysemu/tpm.h"
#include "sysemu/dma.h"
#include "audio/audio.h"
#include "migration/migration.h"
projects / qemu-upstream-4.4-testing.git / commitdiff