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/*
* \file trc_pkt_decode_stm.h
* \brief OpenCSD : STM packet decoder
*
* Convert the incoming indidvidual STM packets to
*
* \copyright Copyright (c) 2016, ARM 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.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* 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.
*/
#ifndef ARM_TRC_PKT_DECODE_STM_H_INCLUDED
#define ARM_TRC_PKT_DECODE_STM_H_INCLUDED
#include "common/trc_pkt_decode_base.h"
#include "opencsd/stm/trc_pkt_elem_stm.h"
#include "opencsd/stm/trc_cmp_cfg_stm.h"
#include "common/trc_gen_elem.h"
class TrcPktDecodeStm : public TrcPktDecodeBase<StmTrcPacket, STMConfig>
{
public:
TrcPktDecodeStm();
TrcPktDecodeStm(int instIDNum);
virtual ~TrcPktDecodeStm();
protected:
/* implementation packet decoding interface */
virtual ocsd_datapath_resp_t processPacket();
virtual ocsd_datapath_resp_t onEOT();
virtual ocsd_datapath_resp_t onReset();
virtual ocsd_datapath_resp_t onFlush();
virtual ocsd_err_t onProtocolConfig();
virtual const uint8_t getCoreSightTraceID() { return m_CSID; };
/* local decode methods */
private:
void initDecoder();
void resetDecoder();
void initPayloadBuffer();
bool isInit() { return (bool)((m_config != 0) && (m_payload_buffer != 0)); };
ocsd_datapath_resp_t decodePacket(bool &bPktDone); //!< decode the current incoming packet
void clearSWTPerPcktInfo();
void updatePayload(bool &bSendPacket);
typedef enum {
NO_SYNC, //!< pre start trace - init state or after reset or overflow, loss of sync.
WAIT_SYNC, //!< waiting for sync packet.
DECODE_PKTS //!< processing input packet.
} processor_state_t;
processor_state_t m_curr_state;
unsync_info_t m_unsync_info;
ocsd_swt_info_t m_swt_packet_info;
uint8_t *m_payload_buffer; //!< payload buffer - allocated for one or multiple packets according to config
int m_payload_size; //!< payload buffer total size in bytes.
int m_payload_used; //!< payload buffer used in bytes - current payload size.
bool m_payload_odd_nibble; //!< last used byte in payload contains a single 4 bit packet.
int m_num_pkt_correlation; //!< number of identical payload packets to buffer up before output. - fixed at 1 till later update
uint8_t m_CSID; //!< Coresight trace ID for this decoder.
bool m_decode_pass1; //!< flag to indicate 1st pass of packet decode.
//** output element
OcsdTraceElement m_output_elem; //!< output packet
};
#endif // ARM_TRC_PKT_DECODE_STM_H_INCLUDED
/* End of File trc_pkt_decode_stm.h */
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