New tssi interface.
git-svn-id: https://svn.code.sf.net/p/chibios/svn2/trunk@11608 110e8d01-0319-4d1e-a829-52ad28d1bb01
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/*
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ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio.
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This file is part of ChibiOS.
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ChibiOS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file smcclient.S
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* @brief SMC client module code.
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*
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* @addtogroup SMC
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* @{
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*/
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.section .text
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.code 32
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.balign 4
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/*
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* r0 smc_service_t handle
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* r1 smc_params_area_t data
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* r2 size_t size
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*
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* r0 msg_t result
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*/
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.global smcInvoke
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smcInvoke:
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smc #0
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bx lr
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/** @} */
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@ -1,88 +0,0 @@
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/*
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ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio.
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This file is part of ChibiOS.
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ChibiOS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file smcclient.h
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* @brief smc Module macros and structures.
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*
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* @addtogroup SMC
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* @{
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*/
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#ifndef SMCCLIENT_H
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#define SMCCLIENT_H
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/*===========================================================================*/
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/* Module constants. */
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/*===========================================================================*/
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/*
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* Service registry errors
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*/
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#define SMC_SVC_OK MSG_OK /* No error */
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#define SMC_SVC_INTR (msg_t)-1 /* Service interrupted */
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#define SMC_SVC_NOENT (msg_t)-2 /* No existent service */
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#define SMC_SVC_INVALID (msg_t)-3 /* Invalid service parameter(s) */
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#define SMC_SVC_BADH (msg_t)-4 /* Invalid service handle */
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#define SMC_SVC_EXIST (msg_t)-5 /* Service already exists */
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/*
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* Special service handles
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*/
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#define SMC_HND_TRAMP ((smc_service_t *)0) /* Trampoline */
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#define SMC_HND_DISCOVERY ((smc_service_t *)1) /* Discovery */
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#define SMC_HND_REENTER ((smc_service_t *)2) /* Reentering a service */
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/*===========================================================================*/
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/* Module pre-compile time settings. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module data structures and types. */
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/*===========================================================================*/
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typedef uint8_t * smc_params_area_t;
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typedef void * smc_service_t;
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/*===========================================================================*/
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/* Module macros. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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msg_t smcInvokeService(smc_service_t handle, smc_params_area_t data,
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size_t size);
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#ifdef __cplusplus
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}
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#endif
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/*===========================================================================*/
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/* Module inline functions. */
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/*===========================================================================*/
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#endif /* SMCCLIENT_H */
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/** @} */
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@ -18,18 +18,16 @@
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*/
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/**
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* @file smcclient.c
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* @brief SMC client module code.
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* @file tsclient.c
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* @brief TSSI client module code.
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*
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* @addtogroup SMC
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* @addtogroup TSSI
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* @{
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*/
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#include "ch.h"
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#include "smcclient.h"
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#include "tsclient.h"
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msg_t smcInvoke(smc_service_t handle, smc_params_area_t data,
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size_t size);
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/*===========================================================================*/
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/* Module local definitions. */
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/*===========================================================================*/
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@ -53,15 +51,55 @@ msg_t smcInvoke(smc_service_t handle, smc_params_area_t data,
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/*===========================================================================*/
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/* Module exported functions. */
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/*===========================================================================*/
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msg_t smcInvokeService(smc_service_t handle, smc_params_area_t data,
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size_t size)
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{
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msg_t result;
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result = smcInvoke(handle, data, size);
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while (result == SMC_SVC_INTR)
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result = smcInvoke(SMC_HND_REENTER, 0, 0);
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return result;
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/*
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* @brief Yields all the idle time to secure world.
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* @note see CH_CFG_IDLE_LOOP_HOOK in chconf.h
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*
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* @notapi
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*/
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void tsIdle(void) {
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(void)tsInvoke1(TS_HND_IDLE, 0, 0, TS_GRANTED_TIMESLICE * 10);
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}
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/**
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* @brief Call a service via smc instruction.
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*
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* @param[in] handle The handle of the service to invoke.
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* The handle is obtained by an invoke to discovery
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* service.
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* @param[inout] svc_data Service request data, often a reference to a more
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* complex structure.
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* @param[in] svc_datalen Size of the svc_data memory area.
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* @param[in] svc_nsec_time The time slice that will be yielded to the lower
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* prio NSEC threads, whenever the service call is
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* interrupted, in microseconds.
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* This avoids the starvation of lower NSEC thread due
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* to continue polling of the called service status.
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* 0 means no time slice is yielded.
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*
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* @return The service status. The value depends on the service.
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*
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* @retval SMC_SVC_OK generic success value.
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* @retval SMC_SVC_BUSY the service has a pending request.
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* @retval SMC_SVC_INVALID bad parameters.
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* @retval SMC_SVC_NOENT no such service.
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* @retval SMC_SVC_BADH bad handle.
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*
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* @api
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*/
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msg_t tsInvokeService(ts_service_t handle, ts_params_area_t data,
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size_t size, sysinterval_t svc_nsec_time)
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{
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int64_t result;
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result = tsInvoke1(handle, data, size, TS_GRANTED_TIMESLICE);
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while ((msg_t)result == SMC_SVC_INTR) {
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if (svc_nsec_time != 0)
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chThdSleepMicroseconds(svc_nsec_time);
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result = tsInvoke1(handle, data, size, TS_GRANTED_TIMESLICE);
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}
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return (msg_t)result;
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}
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/** @} */
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@ -0,0 +1,157 @@
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/*
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ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio.
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This file is part of ChibiOS.
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ChibiOS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file tsclient.h
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* @brief TSSI client module macros and structures.
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*
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* @addtogroup TSSI
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* @{
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*/
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#ifndef TSCLIENT_H
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#define TSCLIENT_H
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/*===========================================================================*/
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/* Module constants. */
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/*===========================================================================*/
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/* Service registry errors as returned by smc.*/
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#define SMC_SVC_OK MSG_OK /* No error.*/
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#define SMC_SVC_INTR (msg_t)-1 /* Service interrupted ( == MSG_TIMEOUT).*/
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#define SMC_SVC_NOENT (msg_t)-2 /* No existent service.*/
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#define SMC_SVC_INVALID (msg_t)-3 /* Invalid service parameter(s).*/
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#define SMC_SVC_BADH (msg_t)-4 /* Invalid service handle.*/
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#define SMC_SVC_EXIST (msg_t)-5 /* Service already exists.*/
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#define SMC_SVC_NHND (msg_t)-6 /* No more services.*/
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#define SMC_SVC_BUSY (msg_t)-7 /* Service busy.*/
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/* Special trusted service handles.*/
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#define TS_HND_DISCOVERY ((ts_service_t *)1) /* Discovery service handle.*/
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#define TS_HND_STQRY ((ts_service_t *)2) /* Query status service handle.*/
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#define TS_HND_IDLE ((ts_service_t *)3) /* Idle service handle.*/
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/*===========================================================================*/
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/* Module pre-compile time settings. */
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/*===========================================================================*/
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#define TS_GRANTED_TIMESLICE 1000 /* Microseconds.*/
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#define TS_CHECK_EVENT_HOOK(f) { \
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(void)f; \
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}
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module data structures and types. */
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/*===========================================================================*/
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typedef uint8_t * ts_params_area_t;
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typedef void * ts_service_t;
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/*===========================================================================*/
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/* Module macros. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module inline functions. */
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/*===========================================================================*/
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/**
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* @brief Call a service via smc instruction.
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* @note see tsInvoke1()
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*
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* @notapi
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*/
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static inline int64_t tsInvoke0(ts_service_t handle, ts_params_area_t data,
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size_t size, sysinterval_t yieldtime) {
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register int64_t result asm("r0");
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register int32_t r0 asm("r0") = (int32_t) handle;
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register int32_t r1 asm("r1") = (int32_t) data;
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register int32_t r2 asm("r2") = (int32_t) size;
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register int32_t r3 asm("r3") = (int32_t) yieldtime;
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__asm volatile ("smc #0" : "=r" (result) : "r" (r0), "r" (r1), "r" (r2),
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"r" (r3) : "memory");
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return result;
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}
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/**
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* @brief Call a service via smc instruction.
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* @details call a given service via smc and evaluate the eventflags mask
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* returned by the secure world. The flags mask is checked by a
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* macro, TS_CHECK_EVENT_HOOK, supplied by the user.
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*
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* @param[in] handle The handle of the service to invoke.
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* The handle is obtained by an invoke to discovery
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* service.
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* @param[inout] svc_data Service request data, often a reference to a more
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* complex structure.
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* @param[in] svc_datalen Size of the svc_data memory area.
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* @param[in] yieldtime The time yield to SEC service to run, in microsec.
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*
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* @return A 64bit value. It is the OR of the 32bit service
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* status combined with a 32bit event mask (in the
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* hi-word).
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* The retval values are returned in the lower word
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* as 32bit int.
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* @retval SMC_SVC_OK generic success value.
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* @retval SMC_SVC_INTR call interrupted.
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* @retval SMC_SVC_BUSY the service has a pending request.
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* @retval SMC_SVC_INVALID bad parameters.
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* @retval SMC_SVC_NOENT no such service.
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* @retval SMC_SVC_BADH bad handle.
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*
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* @api
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*/
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static inline int64_t tsInvoke1(ts_service_t handle, ts_params_area_t data,
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size_t size, sysinterval_t timeslice) {
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int64_t result;
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eventflags_t f;
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result = tsInvoke0(handle, data, size, timeslice);
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f = (eventflags_t)(result >> 32);
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TS_CHECK_EVENT_HOOK(f);
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return result;
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}
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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msg_t tsInvokeService(ts_service_t handle, ts_params_area_t data,
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size_t size, sysinterval_t svc_nsec_time);
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#ifdef __cplusplus
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}
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#endif
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/*===========================================================================*/
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/* Module inline functions. */
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/*===========================================================================*/
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#endif /* TSCLIENT_H */
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/** @} */
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