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/*
* Copyright (c) 2014, Linaro Limited
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* liABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <err.h>
#include <simple_client.h>
#include <tee_client_api.h>
#include <simple_ta.h>
#include <arm_sys_counter.h>
TEEC_Result measure_time_of_open_session(TEEC_UUID *uuid, TEEC_Context *ctx, TEEC_Session *sess)
{
TEEC_Operation op;
TEEC_Result res;
/*
* This is what makes the call communicate with a certain Trusted
* Application. In this case, the Simple TA (see also
* simple_ta.h, those must be the same UUID).
*/
uint32_t err_origin;
uint64_t counter_start = 0;
uint64_t counter_ta = 0;
uint64_t counter_end = 0;
/* Initialize a context connecting us to the TEE */
res = TEEC_InitializeContext(NULL, ctx);
if (res != TEEC_SUCCESS) {
errx(1, "TEEC_InitializeContext failed with code 0x%x", res);
return res;
}
/*
* Open a session to the Simple TA (this corresponds to the
* function TA_OpenSessionEntryPoint() in the TA).
*/
memset(&op, 0, sizeof(op));
op.paramTypes = TEEC_PARAM_TYPES(TEEC_MEMREF_TEMP_OUTPUT,
TEEC_NONE,
TEEC_NONE,
TEEC_NONE);
op.params[0].tmpref.buffer = (void *)&counter_ta;
op.params[0].tmpref.size = sizeof(counter_ta);
counter_start = read_cntvct();
res = TEEC_OpenSession(ctx, sess, uuid,
TEEC_LOGIN_PUBLIC, NULL, &op, &err_origin);
counter_end = read_cntvct();
if (res != TEEC_SUCCESS) {
errx(1, "TEEC_Opensession failed with code 0x%x origin 0x%x",
res, err_origin);
} else {
printf("ClientOpenSession: start=0x%" PRIx64 ", enter_ta=0x%" PRIx64 ", return=0x%" PRIx64 "\n",
counter_start, counter_ta, counter_end);
}
return res;
}
TEEC_Result measure_time_of_invoke_command(TEEC_Session *sess)
{
TEEC_Operation op;
TEEC_Result res;
uint32_t err_origin;
uint64_t counter_start = 0;
uint64_t counter_ta = 0;
uint64_t counter_end = 0;
memset(&op, 0, sizeof(op));
op.paramTypes = TEEC_PARAM_TYPES(TEEC_MEMREF_TEMP_OUTPUT,
TEEC_NONE,
TEEC_NONE,
TEEC_NONE);
op.params[0].tmpref.buffer = (void *)&counter_ta;
op.params[0].tmpref.size = sizeof(counter_ta);
counter_start = read_cntvct();
res = TEEC_InvokeCommand(sess, TAF_REPORT_TIMESTAMP, &op, &err_origin);
counter_end = read_cntvct();
if (res != TEEC_SUCCESS) {
errx(1, "TEEC_InvokeCommand failed with code 0x%x origin 0x%x",
res, err_origin);
} else {
printf("ClientInvokeCommand: start=0x%" PRIx64 ", enter_ta=0x%" PRIx64 ", return=0x%" PRIx64 "\n",
counter_start, counter_ta, counter_end);
}
return res;
}
TEEC_Result measure_time_of_secure_sys_call(TEEC_Session *sess)
{
TEEC_Operation op;
TEEC_Result res;
uint32_t err_origin;
uint64_t start_svc_clock_count = 0;
uint64_t enter_svc_clock_count = 0;
uint64_t return_svc_clock_count = 0;
memset(&op, 0, sizeof(op));
op.paramTypes = TEEC_PARAM_TYPES(TEEC_MEMREF_TEMP_OUTPUT,
TEEC_MEMREF_TEMP_OUTPUT,
TEEC_MEMREF_TEMP_OUTPUT,
TEEC_NONE);
op.params[0].tmpref.buffer = (void *)&start_svc_clock_count;
op.params[0].tmpref.size = sizeof(start_svc_clock_count);
op.params[1].tmpref.buffer = (void *)&enter_svc_clock_count;
op.params[1].tmpref.size = sizeof(enter_svc_clock_count);
op.params[2].tmpref.buffer = (void *)&return_svc_clock_count;
op.params[2].tmpref.size = sizeof(return_svc_clock_count);
res = TEEC_InvokeCommand(sess, TAF_MEASURE_SYS_CALL_TIME, &op, &err_origin);
if (res != TEEC_SUCCESS) {
errx(1, "TEEC_InvokeCommand failed with code 0x%x origin 0x%x",
res, err_origin);
} else {
printf("SecureSysCall: start=0x%" PRIx64 ", enter_svc=0x%" PRIx64 ", return=0x%" PRIx64 "\n",
start_svc_clock_count, enter_svc_clock_count, return_svc_clock_count);
}
return res;
}
void close_session_and_finalize_context(TEEC_Context *ctx, TEEC_Session *sess)
{
/* We're done with the TA, close the session ... */
TEEC_CloseSession(sess);
/* ... and destroy the context. */
TEEC_FinalizeContext(ctx);
}
void measure_performance(void)
{
TEEC_Result res;
TEEC_Context ctx;
TEEC_Session sess;
/*
* This is what makes the call communicate with a certain Trusted
* Application. In this case, the Simple TA (see also
* simple_ta.h, those must be the same UUID).
*/
TEEC_UUID uuid = SIMPLE_TA_UUID;
uint32_t freq = read_cntfrq();
printf("CounterTimerFrequency: 0x%x\n", freq);
res = measure_time_of_open_session(&uuid, &ctx, &sess);
if (res != TEEC_SUCCESS) {
close_session_and_finalize_context(&ctx, &sess);
return;
}
res = measure_time_of_invoke_command(&sess);
if (res != TEEC_SUCCESS) {
close_session_and_finalize_context(&ctx, &sess);
return;
}
res = measure_time_of_secure_sys_call(&sess);
if (res != TEEC_SUCCESS) {
close_session_and_finalize_context(&ctx, &sess);
return;
}
close_session_and_finalize_context(&ctx, &sess);
}
int main(int argc, char *argv[])
{
measure_performance();
return 0;
}
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