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// SPDX-License-Identifier: BSD-2-Clause
/*
* Copyright (c) 2017, Linaro Limited
*/
#include <bench.h>
#include <compiler.h>
#include <kernel/misc.h>
#include <kernel/mutex.h>
#include <kernel/pseudo_ta.h>
#include <malloc.h>
#include <mm/core_memprot.h>
#include <mm/mobj.h>
#include <mm/tee_mm.h>
#include <mm/tee_pager.h>
#include <mm/vm.h>
#include <optee_rpc_cmd.h>
#include <pta_benchmark.h>
#include <stdio.h>
#include <string_ext.h>
#include <string.h>
#include <trace.h>
#define TA_NAME "benchmark.ta"
#define TA_PRINT_PREFIX "Benchmark: "
static struct tee_ts_global *bench_ts_global;
static size_t bench_ts_size;
static struct mutex bench_reg_mu = MUTEX_INITIALIZER;
static struct mobj *bench_mobj;
static TEE_Result rpc_reg_global_buf(uint64_t type, paddr_t phta, size_t size)
{
struct thread_param tpm = THREAD_PARAM_VALUE(IN, type, phta, size);
return thread_rpc_cmd(OPTEE_RPC_CMD_BENCH_REG, 1, &tpm);
}
static TEE_Result alloc_benchmark_buffer(uint32_t type,
TEE_Param p[TEE_NUM_PARAMS])
{
TEE_Result res;
if ((TEE_PARAM_TYPE_GET(type, 0) != TEE_PARAM_TYPE_VALUE_INOUT) ||
(TEE_PARAM_TYPE_GET(type, 1) != TEE_PARAM_TYPE_VALUE_INPUT) ||
(TEE_PARAM_TYPE_GET(type, 2) != TEE_PARAM_TYPE_NONE) ||
(TEE_PARAM_TYPE_GET(type, 3) != TEE_PARAM_TYPE_NONE)) {
return TEE_ERROR_BAD_PARAMETERS;
}
mutex_lock(&bench_reg_mu);
/* Check if we have already registered buffer */
if (bench_ts_global) {
EMSG(TA_PRINT_PREFIX
"timestamp buffer was already registered");
mutex_unlock(&bench_reg_mu);
return TEE_ERROR_BAD_STATE;
}
bench_ts_size = sizeof(struct tee_ts_global) +
p[1].value.a * sizeof(struct tee_ts_cpu_buf);
if (!bench_ts_size) {
EMSG(TA_PRINT_PREFIX
"invalid timestamp buffer size");
mutex_unlock(&bench_reg_mu);
return TEE_ERROR_BAD_STATE;
}
bench_mobj = thread_rpc_alloc_global_payload(bench_ts_size);
if (!bench_mobj) {
EMSG(TA_PRINT_PREFIX
"can't create mobj for timestamp buffer");
mutex_unlock(&bench_reg_mu);
return TEE_ERROR_OUT_OF_MEMORY;
}
bench_ts_global = (struct tee_ts_global *)mobj_get_va(bench_mobj, 0);
if (!bench_ts_global) {
thread_rpc_free_global_payload(bench_mobj);
bench_mobj = NULL;
mutex_unlock(&bench_reg_mu);
return TEE_ERROR_BAD_STATE;
}
memset((void *)bench_ts_global, 0, bench_ts_size);
bench_ts_global->cores = p[1].value.a;
DMSG(TA_PRINT_PREFIX
"allocated timestamp buffer, addr = %p",
(void *)bench_ts_global);
mutex_unlock(&bench_reg_mu);
/* Send back to the optee linux kernel module */
res = rpc_reg_global_buf(OPTEE_MSG_RPC_CMD_BENCH_REG_NEW,
virt_to_phys((void *)bench_ts_global),
bench_ts_size);
p[0].value.a = virt_to_phys((void *)bench_ts_global);
p[0].value.b = bench_ts_size;
return res;
}
static TEE_Result get_benchmark_memref(uint32_t type,
TEE_Param p[TEE_NUM_PARAMS])
{
if ((TEE_PARAM_TYPE_GET(type, 0) != TEE_PARAM_TYPE_VALUE_OUTPUT) ||
(TEE_PARAM_TYPE_GET(type, 1) != TEE_PARAM_TYPE_NONE) ||
(TEE_PARAM_TYPE_GET(type, 2) != TEE_PARAM_TYPE_NONE) ||
(TEE_PARAM_TYPE_GET(type, 3) != TEE_PARAM_TYPE_NONE)) {
return TEE_ERROR_BAD_PARAMETERS;
}
mutex_lock(&bench_reg_mu);
DMSG(TA_PRINT_PREFIX "Sending back timestamp buffer paddr = %p",
(void *)virt_to_phys((void *)bench_ts_global));
if (bench_ts_global) {
p[0].value.a = virt_to_phys((void *)bench_ts_global);
p[0].value.b = bench_ts_size;
} else {
p[0].value.a = 0;
p[0].value.b = 0;
}
mutex_unlock(&bench_reg_mu);
return TEE_SUCCESS;
}
static TEE_Result unregister_benchmark(uint32_t type,
TEE_Param p[TEE_NUM_PARAMS] __unused)
{
TEE_Result res;
if ((TEE_PARAM_TYPE_GET(type, 0) != TEE_PARAM_TYPE_NONE) ||
(TEE_PARAM_TYPE_GET(type, 1) != TEE_PARAM_TYPE_NONE) ||
(TEE_PARAM_TYPE_GET(type, 2) != TEE_PARAM_TYPE_NONE) ||
(TEE_PARAM_TYPE_GET(type, 3) != TEE_PARAM_TYPE_NONE)) {
return TEE_ERROR_BAD_PARAMETERS;
}
mutex_lock(&bench_reg_mu);
DMSG(TA_PRINT_PREFIX "Unregister benchmark ts buffer paddr = %p",
(void *)virt_to_phys((void *)bench_ts_global));
bench_ts_global = NULL;
mutex_unlock(&bench_reg_mu);
res = rpc_reg_global_buf(OPTEE_MSG_RPC_CMD_BENCH_REG_DEL, 0, 0);
thread_rpc_free_global_payload(bench_mobj);
bench_mobj = NULL;
return res;
}
static TEE_Result invoke_command(void *session_ctx __unused,
uint32_t cmd_id, uint32_t param_types,
TEE_Param params[TEE_NUM_PARAMS])
{
switch (cmd_id) {
case BENCHMARK_CMD_ALLOCATE_BUF:
return alloc_benchmark_buffer(param_types, params);
case BENCHMARK_CMD_GET_MEMREF:
return get_benchmark_memref(param_types, params);
case BENCHMARK_CMD_UNREGISTER:
return unregister_benchmark(param_types, params);
default:
break;
}
return TEE_ERROR_BAD_PARAMETERS;
}
pseudo_ta_register(.uuid = BENCHMARK_UUID, .name = TA_NAME,
.flags = PTA_DEFAULT_FLAGS,
.invoke_command_entry_point = invoke_command);
void bm_timestamp(void)
{
struct tee_ts_cpu_buf *cpu_buf;
struct tee_time_st ts_data;
uint64_t ts_i;
void *ret_addr;
uint32_t cur_cpu;
uint32_t exceptions;
if (!bench_ts_global)
return;
exceptions = thread_mask_exceptions(THREAD_EXCP_ALL);
cur_cpu = get_core_pos();
if (cur_cpu >= bench_ts_global->cores) {
thread_unmask_exceptions(exceptions);
return;
}
ret_addr = __builtin_return_address(0);
cpu_buf = &bench_ts_global->cpu_buf[cur_cpu];
ts_i = cpu_buf->head++;
ts_data.cnt = read_pmccntr() * TEE_BENCH_DIVIDER;
ts_data.addr = (uintptr_t)ret_addr;
ts_data.src = TEE_BENCH_CORE;
cpu_buf->stamps[ts_i & TEE_BENCH_MAX_MASK] = ts_data;
thread_unmask_exceptions(exceptions);
}
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