diff options
author | 2017-04-25 03:31:15 -0700 | |
---|---|---|
committer | 2017-05-22 06:48:08 +0000 | |
commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/hw/tpm | |
parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/hw/tpm')
-rw-r--r-- | qemu/hw/tpm/Makefile.objs | 2 | ||||
-rw-r--r-- | qemu/hw/tpm/tpm_int.h | 75 | ||||
-rw-r--r-- | qemu/hw/tpm/tpm_passthrough.c | 566 | ||||
-rw-r--r-- | qemu/hw/tpm/tpm_tis.c | 1101 | ||||
-rw-r--r-- | qemu/hw/tpm/tpm_tis.h | 70 | ||||
-rw-r--r-- | qemu/hw/tpm/tpm_util.c | 127 | ||||
-rw-r--r-- | qemu/hw/tpm/tpm_util.h | 28 |
7 files changed, 0 insertions, 1969 deletions
diff --git a/qemu/hw/tpm/Makefile.objs b/qemu/hw/tpm/Makefile.objs deleted file mode 100644 index 64cecc3b6..000000000 --- a/qemu/hw/tpm/Makefile.objs +++ /dev/null @@ -1,2 +0,0 @@ -common-obj-$(CONFIG_TPM_TIS) += tpm_tis.o -common-obj-$(CONFIG_TPM_PASSTHROUGH) += tpm_passthrough.o tpm_util.o diff --git a/qemu/hw/tpm/tpm_int.h b/qemu/hw/tpm/tpm_int.h deleted file mode 100644 index f2f285b3c..000000000 --- a/qemu/hw/tpm/tpm_int.h +++ /dev/null @@ -1,75 +0,0 @@ -/* - * 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; - TPMVersion be_tpm_version; -}; - -#define TPM(obj) OBJECT_CHECK(TPMState, (obj), TYPE_TPM_TIS) - -#define TPM_STANDARD_CMDLINE_OPTS \ - { \ - .name = "type", \ - .type = QEMU_OPT_STRING, \ - .help = "Type of TPM backend", \ - } - -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_ContinueSelfTest 0x53 -#define TPM_ORD_GetTicks 0xf1 - - -/* TPM2 defines */ -#define TPM2_ST_NO_SESSIONS 0x8001 - -#define TPM2_CC_ReadClock 0x00000181 - -#endif /* TPM_TPM_INT_H */ diff --git a/qemu/hw/tpm/tpm_passthrough.c b/qemu/hw/tpm/tpm_passthrough.c deleted file mode 100644 index e88c0d20b..000000000 --- a/qemu/hw/tpm/tpm_passthrough.c +++ /dev/null @@ -1,566 +0,0 @@ -/* - * 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 "qemu/osdep.h" -#include "qemu-common.h" -#include "qemu/error-report.h" -#include "qemu/sockets.h" -#include "sysemu/tpm_backend.h" -#include "tpm_int.h" -#include "hw/hw.h" -#include "hw/i386/pc.h" -#include "sysemu/tpm_backend_int.h" -#include "tpm_tis.h" -#include "tpm_util.h" - -#define DEBUG_TPM 0 - -#define DPRINTF(fmt, ...) do { \ - if (DEBUG_TPM) { \ - fprintf(stderr, fmt, ## __VA_ARGS__); \ - } \ -} while (0); - -#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; - - TPMVersion tpm_version; -}; - -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) -{ - int ret, remain; - - remain = len; - while (remain > 0) { - ret = write(fd, buf, remain); - if (ret < 0) { - if (errno != EINTR && errno != EAGAIN) { - return -1; - } - } else if (ret == 0) { - break; - } else { - buf += ret; - remain -= ret; - } - } - return len - remain; -} - -static int tpm_passthrough_unix_read(int fd, uint8_t *buf, uint32_t len) -{ - int ret; - reread: - ret = read(fd, buf, len); - if (ret < 0) { - if (errno != EINTR && errno != EAGAIN) { - return -1; - } - goto reread; - } - return ret; -} - -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 bool tpm_passthrough_is_selftest(const uint8_t *in, uint32_t in_len) -{ - struct tpm_req_hdr *hdr = (struct tpm_req_hdr *)in; - - if (in_len >= sizeof(*hdr)) { - return (be32_to_cpu(hdr->ordinal) == TPM_ORD_ContinueSelfTest); - } - - return false; -} - -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, - bool *selftest_done) -{ - int ret; - bool is_selftest; - const struct tpm_resp_hdr *hdr; - - tpm_pt->tpm_op_canceled = false; - tpm_pt->tpm_executing = true; - *selftest_done = false; - - is_selftest = tpm_passthrough_is_selftest(in, in_len); - - 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)", - 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)", - 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"); - } - - if (is_selftest && (ret >= sizeof(struct tpm_resp_hdr))) { - hdr = (struct tpm_resp_hdr *)out; - *selftest_done = (be32_to_cpu(hdr->errcode) == 0); - } - -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, - bool *selftest_done) -{ - 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, - selftest_done); -} - -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; - bool selftest_done = false; - - 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, - &selftest_done); - - thr_parms->recv_data_callback(thr_parms->tpm_state, - thr_parms->tpm_state->locty_number, - selftest_done); - 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 int tpm_passthrough_reset_tpm_established_flag(TPMBackend *tb, - uint8_t locty) -{ - /* only a TPM 2.0 will support this */ - return 0; -} - -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", - 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"; -} - -static TPMVersion tpm_passthrough_get_tpm_version(TPMBackend *tb) -{ - TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb); - - return tpm_pt->tpm_version; -} - -/* - * 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. - * From /dev/tpm0 create /sys/class/misc/tpm0/device/cancel - */ -static int tpm_passthrough_open_sysfs_cancel(TPMBackend *tb) -{ - TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb); - int fd = -1; - char *dev; - char path[PATH_MAX]; - - if (tb->cancel_path) { - fd = qemu_open(tb->cancel_path, O_WRONLY); - if (fd < 0) { - error_report("Could not open TPM cancel path : %s", - strerror(errno)); - } - return fd; - } - - dev = strrchr(tpm_pt->tpm_dev, '/'); - if (dev) { - dev++; - if (snprintf(path, sizeof(path), "/sys/class/misc/%s/device/cancel", - dev) < sizeof(path)) { - fd = qemu_open(path, O_WRONLY); - if (fd >= 0) { - tb->cancel_path = g_strdup(path); - } else { - error_report("tpm_passthrough: Could not open TPM cancel " - "path %s : %s", path, strerror(errno)); - } - } - } else { - error_report("tpm_passthrough: Bad TPM device path %s", - tpm_pt->tpm_dev); - } - - 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"); - 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", - tpm_pt->tpm_dev, strerror(errno)); - goto err_free_parameters; - } - - if (tpm_util_test_tpmdev(tpm_pt->tpm_fd, &tpm_pt->tpm_version)) { - error_report("'%s' is not a TPM device.", - 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 QemuOptDesc tpm_passthrough_cmdline_opts[] = { - TPM_STANDARD_CMDLINE_OPTS, - { - .name = "cancel-path", - .type = QEMU_OPT_STRING, - .help = "Sysfs file entry for canceling TPM commands", - }, - { - .name = "path", - .type = QEMU_OPT_STRING, - .help = "Path to TPM device on the host", - }, - { /* end of list */ }, -}; - -static const TPMDriverOps tpm_passthrough_driver = { - .type = TPM_TYPE_PASSTHROUGH, - .opts = tpm_passthrough_cmdline_opts, - .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, - .reset_tpm_established_flag = tpm_passthrough_reset_tpm_established_flag, - .get_tpm_version = tpm_passthrough_get_tpm_version, -}; - -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) diff --git a/qemu/hw/tpm/tpm_tis.c b/qemu/hw/tpm/tpm_tis.c deleted file mode 100644 index 381e7266e..000000000 --- a/qemu/hw/tpm/tpm_tis.c +++ /dev/null @@ -1,1101 +0,0 @@ -/* - * 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 1.3, 21 March 2013 - * In the developers menu choose the PC Client section then find the TIS - * specification. - * - * TPM TIS for TPM 2 implementation following TCG PC Client Platform - * TPM Profile (PTP) Specification, Familiy 2.0, Revision 00.43 - */ - -#include "qemu/osdep.h" -#include "sysemu/tpm_backend.h" -#include "tpm_int.h" -#include "sysemu/block-backend.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 "qapi/error.h" -#include "qemu-common.h" -#include "qemu/main-loop.h" -#include "sysemu/tpm_backend.h" - -#define DEBUG_TIS 0 - -#define DPRINTF(fmt, ...) do { \ - if (DEBUG_TIS) { \ - printf(fmt, ## __VA_ARGS__); \ - } \ -} while (0); - -/* 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_INTERFACE_ID 0x30 -#define TPM_TIS_REG_DATA_XFIFO 0x80 -#define TPM_TIS_REG_DATA_XFIFO_END 0xbc -#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_TPM_FAMILY_MASK (0x3 << 26)/* TPM 2.0 */ -#define TPM_TIS_STS_TPM_FAMILY1_2 (0 << 26) /* TPM 2.0 */ -#define TPM_TIS_STS_TPM_FAMILY2_0 (1 << 26) /* TPM 2.0 */ -#define TPM_TIS_STS_RESET_ESTABLISHMENT_BIT (1 << 25) /* TPM 2.0 */ -#define TPM_TIS_STS_COMMAND_CANCEL (1 << 24) /* TPM 2.0 */ - -#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_SELFTEST_DONE (1 << 2) -#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_INTERFACE_VERSION1_3 (2 << 28) -#define TPM_TIS_CAP_INTERFACE_VERSION1_3_FOR_TPM2_0 (3 << 28) -#define TPM_TIS_CAP_DATA_TRANSFER_64B (3 << 9) -#define TPM_TIS_CAP_DATA_TRANSFER_LEGACY (0 << 9) -#define TPM_TIS_CAP_BURST_COUNT_DYNAMIC (0 << 8) -#define TPM_TIS_CAP_INTERRUPT_LOW_LEVEL (1 << 4) /* support is mandatory */ -#define TPM_TIS_CAPABILITIES_SUPPORTED1_3 \ - (TPM_TIS_CAP_INTERRUPT_LOW_LEVEL | \ - TPM_TIS_CAP_BURST_COUNT_DYNAMIC | \ - TPM_TIS_CAP_DATA_TRANSFER_64B | \ - TPM_TIS_CAP_INTERFACE_VERSION1_3 | \ - TPM_TIS_INTERRUPTS_SUPPORTED) - -#define TPM_TIS_CAPABILITIES_SUPPORTED2_0 \ - (TPM_TIS_CAP_INTERRUPT_LOW_LEVEL | \ - TPM_TIS_CAP_BURST_COUNT_DYNAMIC | \ - TPM_TIS_CAP_DATA_TRANSFER_64B | \ - TPM_TIS_CAP_INTERFACE_VERSION1_3_FOR_TPM2_0 | \ - TPM_TIS_INTERRUPTS_SUPPORTED) - -#define TPM_TIS_IFACE_ID_INTERFACE_TIS1_3 (0xf) /* TPM 2.0 */ -#define TPM_TIS_IFACE_ID_INTERFACE_FIFO (0x0) /* TPM 2.0 */ -#define TPM_TIS_IFACE_ID_INTERFACE_VER_FIFO (0 << 4) /* TPM 2.0 */ -#define TPM_TIS_IFACE_ID_CAP_5_LOCALITIES (1 << 8) /* TPM 2.0 */ -#define TPM_TIS_IFACE_ID_CAP_TIS_SUPPORTED (1 << 13) /* TPM 2.0 */ -#define TPM_TIS_IFACE_ID_INT_SEL_LOCK (1 << 19) /* TPM 2.0 */ - -#define TPM_TIS_IFACE_ID_SUPPORTED_FLAGS1_3 \ - (TPM_TIS_IFACE_ID_INTERFACE_TIS1_3 | \ - (~0u << 4)/* all of it is don't care */) - -/* if backend was a TPM 2.0: */ -#define TPM_TIS_IFACE_ID_SUPPORTED_FLAGS2_0 \ - (TPM_TIS_IFACE_ID_INTERFACE_FIFO | \ - TPM_TIS_IFACE_ID_INTERFACE_VER_FIFO | \ - TPM_TIS_IFACE_ID_CAP_5_LOCALITIES | \ - TPM_TIS_IFACE_ID_CAP_TIS_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 -} - -/* - * Set the given flags in the STS register by clearing the register but - * preserving the SELFTEST_DONE and TPM_FAMILY_MASK flags and then setting - * the new flags. - * - * The SELFTEST_DONE flag is acquired from the backend that determines it by - * peeking into TPM commands. - * - * A VM suspend/resume will preserve the flag by storing it into the VM - * device state, but the backend will not remember it when QEMU is started - * again. Therefore, we cache the flag here. Once set, it will not be unset - * except by a reset. - */ -static void tpm_tis_sts_set(TPMLocality *l, uint32_t flags) -{ - l->sts &= TPM_TIS_STS_SELFTEST_DONE | TPM_TIS_STS_TPM_FAMILY_MASK; - l->sts |= flags; -} - -/* - * 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; - tpm_tis_sts_set(&tis->loc[tis->aborting_locty], - 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; - - tpm_tis_sts_set(&tis->loc[locty], - 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, - bool is_selftest_done) -{ - TPMTISEmuState *tis = &s->s.tis; - uint8_t l; - - assert(s->locty_number == locty); - - if (is_selftest_done) { - for (l = 0; l < TPM_TIS_NUM_LOCALITIES; l++) { - tis->loc[locty].sts |= TPM_TIS_STS_SELFTEST_DONE; - } - } - - 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 */ - tpm_tis_sts_set(&tis->loc[locty], 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], - (int)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; - uint8_t v; - - 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: - switch (s->be_tpm_version) { - case TPM_VERSION_UNSPEC: - val = 0; - break; - case TPM_VERSION_1_2: - val = TPM_TIS_CAPABILITIES_SUPPORTED1_3; - break; - case TPM_VERSION_2_0: - val = TPM_TIS_CAPABILITIES_SUPPORTED2_0; - break; - } - 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: - case TPM_TIS_REG_DATA_XFIFO ... TPM_TIS_REG_DATA_XFIFO_END: - if (tis->active_locty == locty) { - if (size > 4 - (addr & 0x3)) { - /* prevent access beyond FIFO */ - size = 4 - (addr & 0x3); - } - val = 0; - shift = 0; - while (size > 0) { - switch (tis->loc[locty].state) { - case TPM_TIS_STATE_COMPLETION: - v = tpm_tis_data_read(s, locty); - break; - default: - v = TPM_TIS_NO_DATA_BYTE; - break; - } - val |= (v << shift); - shift += 8; - size--; - } - shift = 0; /* no more adjustments */ - } - break; - case TPM_TIS_REG_INTERFACE_ID: - val = tis->loc[locty].iface_id; - 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, (int)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 & 0xffc; - uint8_t shift = (addr & 0x3) * 8; - uint8_t locty = tpm_tis_locality_from_addr(addr); - uint8_t active_locty, l; - int c, set_new_locty = 1; - uint16_t len; - uint32_t mask = (size == 1) ? 0xff : ((size == 2) ? 0xffff : ~0); - - DPRINTF("tpm_tis: write.%u(%08x) = %08x\n", size, (int)addr, (int)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; - } - - val &= mask; - - if (shift) { - val <<= shift; - mask <<= shift; - } - - mask ^= 0xffffffff; - - 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 &= mask; - 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; - } - - if (s->be_tpm_version == TPM_VERSION_2_0) { - /* some flags that are only supported for TPM 2 */ - if (val & TPM_TIS_STS_COMMAND_CANCEL) { - if (tis->loc[locty].state == TPM_TIS_STATE_EXECUTION) { - /* - * request the backend to cancel. Some backends may not - * support it - */ - tpm_backend_cancel_cmd(s->be_driver); - } - } - - if (val & TPM_TIS_STS_RESET_ESTABLISHMENT_BIT) { - if (locty == 3 || locty == 4) { - tpm_backend_reset_tpm_established_flag(s->be_driver, locty); - } - } - } - - 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: - tpm_tis_sts_set(&tis->loc[locty], 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)) { - tpm_tis_sts_set(&tis->loc[locty], - 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; - tpm_tis_sts_set(&tis->loc[locty], - TPM_TIS_STS_VALID| - TPM_TIS_STS_DATA_AVAILABLE); - break; - default: - /* ignore */ - break; - } - } - break; - case TPM_TIS_REG_DATA_FIFO: - case TPM_TIS_REG_DATA_XFIFO ... TPM_TIS_REG_DATA_XFIFO_END: - /* 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: Data to send to TPM: %08x (size=%d)\n", - (int)val, size); - if (tis->loc[locty].state == TPM_TIS_STATE_READY) { - tis->loc[locty].state = TPM_TIS_STATE_RECEPTION; - tpm_tis_sts_set(&tis->loc[locty], - TPM_TIS_STS_EXPECT | TPM_TIS_STS_VALID); - } - - val >>= shift; - if (size > 4 - (addr & 0x3)) { - /* prevent access beyond FIFO */ - size = 4 - (addr & 0x3); - } - - while ((tis->loc[locty].sts & TPM_TIS_STS_EXPECT) && size > 0) { - 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; - val >>= 8; - size--; - } else { - tpm_tis_sts_set(&tis->loc[locty], 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 need_irq = !(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) { - tpm_tis_sts_set(&tis->loc[locty], - TPM_TIS_STS_EXPECT | TPM_TIS_STS_VALID); - } else { - /* packet complete */ - tpm_tis_sts_set(&tis->loc[locty], TPM_TIS_STS_VALID); - } -#ifdef RAISE_STS_IRQ - if (need_irq) { - tpm_tis_raise_irq(s, locty, TPM_TIS_INT_STS_VALID); - } -#endif - } - } - break; - case TPM_TIS_REG_INTERFACE_ID: - if (val & TPM_TIS_IFACE_ID_INT_SEL_LOCK) { - for (l = 0; l < TPM_TIS_NUM_LOCALITIES; l++) { - tis->loc[l].iface_id |= TPM_TIS_IFACE_ID_INT_SEL_LOCK; - } - } - break; - } -} - -static void tpm_tis_mmio_write(void *opaque, hwaddr addr, - uint64_t val, unsigned size) -{ - 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); -} - -/* - * Get the TPMVersion of the backend device being used - */ -TPMVersion tpm_tis_get_tpm_version(Object *obj) -{ - TPMState *s = TPM(obj); - - return tpm_backend_get_tpm_version(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; - - s->be_tpm_version = tpm_backend_get_tpm_version(s->be_driver); - - 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; - switch (s->be_tpm_version) { - case TPM_VERSION_UNSPEC: - break; - case TPM_VERSION_1_2: - tis->loc[c].sts = TPM_TIS_STS_TPM_FAMILY1_2; - tis->loc[c].iface_id = TPM_TIS_IFACE_ID_SUPPORTED_FLAGS1_3; - break; - case TPM_VERSION_2_0: - tis->loc[c].sts = TPM_TIS_STS_TPM_FAMILY2_0; - tis->loc[c].iface_id = TPM_TIS_IFACE_ID_SUPPORTED_FLAGS2_0; - break; - } - 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", tis->irq_num); - return; - } - - tis->bh = qemu_bh_new(tpm_tis_receive_bh, s); - - isa_init_irq(&s->busdev, &tis->irq, tis->irq_num); - - memory_region_add_subregion(isa_address_space(ISA_DEVICE(dev)), - TPM_TIS_ADDR_BASE, &s->mmio); -} - -static void tpm_tis_initfn(Object *obj) -{ - TPMState *s = TPM(obj); - - memory_region_init_io(&s->mmio, OBJECT(s), &tpm_tis_memory_ops, - s, "tpm-tis-mmio", - TPM_TIS_NUM_LOCALITIES << TPM_TIS_LOCALITY_SHIFT); -} - -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, - .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) diff --git a/qemu/hw/tpm/tpm_tis.h b/qemu/hw/tpm/tpm_tis.h deleted file mode 100644 index a1df41fa2..000000000 --- a/qemu/hw/tpm/tpm_tis.h +++ /dev/null @@ -1,70 +0,0 @@ -/* - * 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 "hw/acpi/tpm.h" -#include "qemu-common.h" - -#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_BUFFER_MAX 4096 - -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; - uint32_t sts; - uint32_t iface_id; - 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 */ diff --git a/qemu/hw/tpm/tpm_util.c b/qemu/hw/tpm/tpm_util.c deleted file mode 100644 index 7b3542972..000000000 --- a/qemu/hw/tpm/tpm_util.c +++ /dev/null @@ -1,127 +0,0 @@ -/* - * TPM utility functions - * - * Copyright (c) 2010 - 2015 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 "qemu/osdep.h" -#include "tpm_util.h" -#include "tpm_int.h" - -/* - * A basic test of a TPM device. We expect a well formatted response header - * (error response is fine) within one second. - */ -static int tpm_util_test(int fd, - unsigned char *request, - size_t requestlen, - uint16_t *return_tag) -{ - 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, request, requestlen); - if (n < 0) { - return errno; - } - if (n != requestlen) { - 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 (be32_to_cpu(resp->len) != n) { - return EBADMSG; - } - - *return_tag = be16_to_cpu(resp->tag); - - return 0; -} - -/* - * Probe for the TPM device in the back - * Returns 0 on success with the version of the probed TPM set, 1 on failure. - */ -int tpm_util_test_tpmdev(int tpm_fd, TPMVersion *tpm_version) -{ - /* - * Sending a TPM1.2 command to a TPM2 should return a TPM1.2 - * header (tag = 0xc4) and error code (TPM_BADTAG = 0x1e) - * - * Sending a TPM2 command to a TPM 2 will give a TPM 2 tag in the - * header. - * Sending a TPM2 command to a TPM 1.2 will give a TPM 1.2 tag - * in the header and an error code. - */ - const struct tpm_req_hdr test_req = { - .tag = cpu_to_be16(TPM_TAG_RQU_COMMAND), - .len = cpu_to_be32(sizeof(test_req)), - .ordinal = cpu_to_be32(TPM_ORD_GetTicks), - }; - - const struct tpm_req_hdr test_req_tpm2 = { - .tag = cpu_to_be16(TPM2_ST_NO_SESSIONS), - .len = cpu_to_be32(sizeof(test_req_tpm2)), - .ordinal = cpu_to_be32(TPM2_CC_ReadClock), - }; - uint16_t return_tag; - int ret; - - /* Send TPM 2 command */ - ret = tpm_util_test(tpm_fd, (unsigned char *)&test_req_tpm2, - sizeof(test_req_tpm2), &return_tag); - /* TPM 2 would respond with a tag of TPM2_ST_NO_SESSIONS */ - if (!ret && return_tag == TPM2_ST_NO_SESSIONS) { - *tpm_version = TPM_VERSION_2_0; - return 0; - } - - /* Send TPM 1.2 command */ - ret = tpm_util_test(tpm_fd, (unsigned char *)&test_req, - sizeof(test_req), &return_tag); - if (!ret && return_tag == TPM_TAG_RSP_COMMAND) { - *tpm_version = TPM_VERSION_1_2; - /* this is a TPM 1.2 */ - return 0; - } - - *tpm_version = TPM_VERSION_UNSPEC; - - return 1; -} diff --git a/qemu/hw/tpm/tpm_util.h b/qemu/hw/tpm/tpm_util.h deleted file mode 100644 index e7f354a52..000000000 --- a/qemu/hw/tpm/tpm_util.h +++ /dev/null @@ -1,28 +0,0 @@ -/* - * TPM utility functions - * - * Copyright (c) 2010 - 2015 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_UTILS_H -#define TPM_TPM_UTILS_H - -#include "sysemu/tpm_backend.h" - -int tpm_util_test_tpmdev(int tpm_fd, TPMVersion *tpm_version); - -#endif /* TPM_TPM_UTILS_H */ |