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opencsd: Initial objects and types for STM packet decode.
Adds in STM packet decoder initial types and decoder object. Decoder will output generic SW trace packets as Master + Chan + payload + timestamp. Signed-off-by: Mike Leach <mike.leach@linaro.org>
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| Original file line number | Diff line number | Diff line change |
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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. | ||
| */ | ||
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| /* | ||
| * 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. | ||
| */ | ||
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| #ifndef ARM_TRC_PKT_DECODE_STM_H_INCLUDED | ||
| #define ARM_TRC_PKT_DECODE_STM_H_INCLUDED | ||
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| #include "common/trc_pkt_decode_base.h" | ||
| #include "stm/trc_pkt_elem_stm.h" | ||
| #include "stm/trc_cmp_cfg_stm.h" | ||
| #include "common/trc_gen_elem.h" | ||
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| class TrcPktDecodeStm : public TrcPktDecodeBase<StmTrcPacket, STMConfig> | ||
| { | ||
| public: | ||
| TrcPktDecodeStm(); | ||
| TrcPktDecodeStm(int instIDNum); | ||
| virtual ~TrcPktDecodeStm(); | ||
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| 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; }; | ||
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| /* local decode methods */ | ||
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| private: | ||
| void initDecoder(); | ||
| void resetDecoder(); | ||
| void initPayloadBuffer(); | ||
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| 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; | ||
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| processor_state_t m_curr_state; | ||
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| uint8_t m_curr_master; //!< current active master ID | ||
| uint16_t m_curr_channel; //!< current active channel ID | ||
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| uint8_t *m_payload_buffer; //!< payload buffer - allocated for one of multiple packets according to config | ||
| int m_payload_used; //!< payload used in bytes | ||
| int m_payload_size; //!< payload size in bytes | ||
| bool m_payload_odd_nibble; //!< last used byte in payload contains a single 4 bit packet. | ||
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| uint8_t m_CSID; //!< Coresight trace ID for this decoder. | ||
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| //** output element | ||
| OcsdTraceElement m_output_elem; //!< output packet | ||
| }; | ||
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| #endif // ARM_TRC_PKT_DECODE_STM_H_INCLUDED | ||
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| /* End of File trc_pkt_decode_stm.h */ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| /* | ||
| * \file trc_pkt_decode_stm.cpp | ||
| * \brief OpenCSD : | ||
| * | ||
| * \copyright Copyright (c) 2016, ARM Limited. All Rights Reserved. | ||
| */ | ||
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| /* | ||
| * 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. | ||
| */ | ||
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| #include "stm/trc_pkt_decode_stm.h" | ||
| #define DCD_NAME "DCD_STM" | ||
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| TrcPktDecodeStm::TrcPktDecodeStm() | ||
| : TrcPktDecodeBase(DCD_NAME) | ||
| { | ||
| initDecoder(); | ||
| } | ||
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| TrcPktDecodeStm::TrcPktDecodeStm(int instIDNum) | ||
| : TrcPktDecodeBase(DCD_NAME, instIDNum) | ||
| { | ||
| initDecoder(); | ||
| } | ||
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| TrcPktDecodeStm::~TrcPktDecodeStm() | ||
| { | ||
| if(m_payload_buffer) | ||
| delete [] m_payload_buffer; | ||
| m_payload_buffer = 0; | ||
| } | ||
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| /* implementation packet decoding interface */ | ||
| ocsd_datapath_resp_t TrcPktDecodeStm::processPacket() | ||
| { | ||
| } | ||
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| ocsd_datapath_resp_t TrcPktDecodeStm::onEOT() | ||
| { | ||
| } | ||
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| ocsd_datapath_resp_t TrcPktDecodeStm::onReset() | ||
| { | ||
| } | ||
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| ocsd_datapath_resp_t TrcPktDecodeStm::onFlush() | ||
| { | ||
| } | ||
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| ocsd_err_t TrcPktDecodeStm::onProtocolConfig() | ||
| { | ||
| if(m_config == 0) | ||
| return OCSD_ERR_NOT_INIT; | ||
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| // static config - copy of CSID for easy reference | ||
| m_CSID = m_config->getTraceID(); | ||
| return OCSD_OK; | ||
| } | ||
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| void TrcPktDecodeStm::initDecoder() | ||
| { | ||
| m_payload_buffer = 0; | ||
| m_payload_used = 0; | ||
| resetDecoder(); | ||
| } | ||
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| void TrcPktDecodeStm::resetDecoder() | ||
| { | ||
| m_curr_state = NO_SYNC; | ||
| m_curr_master = 0; | ||
| m_curr_channel = 0; | ||
| m_payload_size = 0; | ||
| m_payload_odd_nibble = false; | ||
| m_CSID = 0; | ||
| m_output_elem.init(); | ||
| } | ||
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| void TrcPktDecodeStm::initPayloadBuffer() | ||
| { | ||
| // set up the payload buffer. If we are correlating indentical packets then | ||
| // need a buffer that is a multiple of 64bit packets. | ||
| // otherwise a single packet length will do. | ||
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| } | ||
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| /* End of File trc_pkt_decode_stm.cpp */ |