diff options
Diffstat (limited to 'contrib/opencsd/decoder/include/common/trc_pkt_decode_base.h')
| -rw-r--r-- | contrib/opencsd/decoder/include/common/trc_pkt_decode_base.h | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/contrib/opencsd/decoder/include/common/trc_pkt_decode_base.h b/contrib/opencsd/decoder/include/common/trc_pkt_decode_base.h new file mode 100644 index 000000000000..2bbf5e51d878 --- /dev/null +++ b/contrib/opencsd/decoder/include/common/trc_pkt_decode_base.h @@ -0,0 +1,303 @@ +/*! + * \file trc_pkt_decode_base.h + * \brief OpenCSD : Trace Packet decoder base class. + * + * \copyright Copyright (c) 2015, 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_BASE_H_INCLUDED +#define ARM_TRC_PKT_DECODE_BASE_H_INCLUDED + +#include "trc_component.h" +#include "comp_attach_pt_t.h" + +#include "interfaces/trc_pkt_in_i.h" +#include "interfaces/trc_gen_elem_in_i.h" +#include "interfaces/trc_tgt_mem_access_i.h" +#include "interfaces/trc_instr_decode_i.h" + +/** @defgroup ocsd_pkt_decode OpenCSD Library : Packet Decoders. + + @brief Classes providing Protocol Packet Decoding capability. + + Packet decoders convert incoming protocol packets from a packet processor, + into generic trace elements to be output to an analysis program. + + Packet decoders can be:- + - PE decoders - converting ETM or PTM packets into instruction and data trace elements + - SW stimulus decoder - converting STM or ITM packets into software generated trace elements. + - Bus decoders - converting HTM packets into bus transaction elements. + +@{*/ + + +class TrcPktDecodeI : public TraceComponent +{ +public: + TrcPktDecodeI(const char *component_name); + TrcPktDecodeI(const char *component_name, int instIDNum); + virtual ~TrcPktDecodeI() {}; + + componentAttachPt<ITrcGenElemIn> *getTraceElemOutAttachPt() { return &m_trace_elem_out; }; + componentAttachPt<ITargetMemAccess> *getMemoryAccessAttachPt() { return &m_mem_access; }; + componentAttachPt<IInstrDecode> *getInstrDecodeAttachPt() { return &m_instr_decode; }; + + void setUsesMemAccess(bool bUsesMemaccess) { m_uses_memaccess = bUsesMemaccess; }; + const bool getUsesMemAccess() const { return m_uses_memaccess; }; + + void setUsesIDecode(bool bUsesIDecode) { m_uses_idecode = bUsesIDecode; }; + const bool getUsesIDecode() const { return m_uses_idecode; }; + +protected: + + /* implementation packet decoding interface */ + virtual ocsd_datapath_resp_t processPacket() = 0; + virtual ocsd_datapath_resp_t onEOT() = 0; + virtual ocsd_datapath_resp_t onReset() = 0; + virtual ocsd_datapath_resp_t onFlush() = 0; + virtual ocsd_err_t onProtocolConfig() = 0; + virtual const uint8_t getCoreSightTraceID() = 0; + + const bool checkInit(); + + /* data output */ + ocsd_datapath_resp_t outputTraceElement(const OcsdTraceElement &elem); // use current index + ocsd_datapath_resp_t outputTraceElementIdx(ocsd_trc_index_t idx, const OcsdTraceElement &elem); // use supplied index (where decoder caches elements) + + /* target access */ + ocsd_err_t accessMemory(const ocsd_vaddr_t address, const ocsd_mem_space_acc_t mem_space, uint32_t *num_bytes, uint8_t *p_buffer); + + /* instruction decode */ + ocsd_err_t instrDecode(ocsd_instr_info *instr_info); + + componentAttachPt<ITrcGenElemIn> m_trace_elem_out; + componentAttachPt<ITargetMemAccess> m_mem_access; + componentAttachPt<IInstrDecode> m_instr_decode; + + ocsd_trc_index_t m_index_curr_pkt; + + bool m_decode_init_ok; //!< set true if all attachments in place for decode. (remove checks in main throughput paths) + bool m_config_init_ok; //!< set true if config set. + + std::string init_err_msg; //!< error message for init error + + bool m_uses_memaccess; + bool m_uses_idecode; + +}; + +inline TrcPktDecodeI::TrcPktDecodeI(const char *component_name) : + TraceComponent(component_name), + m_index_curr_pkt(0), + m_decode_init_ok(false), + m_config_init_ok(false), + m_uses_memaccess(true), + m_uses_idecode(true) +{ +} + +inline TrcPktDecodeI::TrcPktDecodeI(const char *component_name, int instIDNum) : + TraceComponent(component_name, instIDNum), + m_index_curr_pkt(0), + m_decode_init_ok(false), + m_config_init_ok(false), + m_uses_memaccess(true), + m_uses_idecode(true) +{ +} + +inline const bool TrcPktDecodeI::checkInit() +{ + if(!m_decode_init_ok) + { + if(!m_config_init_ok) + init_err_msg = "No decoder configuration information"; + else if(!m_trace_elem_out.hasAttachedAndEnabled()) + init_err_msg = "No element output interface attached and enabled"; + else if(m_uses_memaccess && !m_mem_access.hasAttachedAndEnabled()) + init_err_msg = "No memory access interface attached and enabled"; + else if(m_uses_idecode && !m_instr_decode.hasAttachedAndEnabled()) + init_err_msg = "No instruction decoder interface attached and enabled"; + else + m_decode_init_ok = true; + } + return m_decode_init_ok; +} + +inline ocsd_datapath_resp_t TrcPktDecodeI::outputTraceElement(const OcsdTraceElement &elem) +{ + return m_trace_elem_out.first()->TraceElemIn(m_index_curr_pkt,getCoreSightTraceID(), elem); +} + +inline ocsd_datapath_resp_t TrcPktDecodeI::outputTraceElementIdx(ocsd_trc_index_t idx, const OcsdTraceElement &elem) +{ + return m_trace_elem_out.first()->TraceElemIn(idx, getCoreSightTraceID(), elem); +} + +inline ocsd_err_t TrcPktDecodeI::instrDecode(ocsd_instr_info *instr_info) +{ + if(m_uses_idecode) + return m_instr_decode.first()->DecodeInstruction(instr_info); + return OCSD_ERR_DCD_INTERFACE_UNUSED; +} + +inline ocsd_err_t TrcPktDecodeI::accessMemory(const ocsd_vaddr_t address, const ocsd_mem_space_acc_t mem_space, uint32_t *num_bytes, uint8_t *p_buffer) +{ + if(m_uses_memaccess) + return m_mem_access.first()->ReadTargetMemory(address,getCoreSightTraceID(),mem_space, num_bytes,p_buffer); + return OCSD_ERR_DCD_INTERFACE_UNUSED; +} + +/**********************************************************************/ +template <class P, class Pc> +class TrcPktDecodeBase : public TrcPktDecodeI, public IPktDataIn<P> +{ +public: + TrcPktDecodeBase(const char *component_name); + TrcPktDecodeBase(const char *component_name, int instIDNum); + virtual ~TrcPktDecodeBase(); + + virtual ocsd_datapath_resp_t PacketDataIn( const ocsd_datapath_op_t op, + const ocsd_trc_index_t index_sop, + const P *p_packet_in); + + + /* protocol configuration */ + ocsd_err_t setProtocolConfig(const Pc *config); + const Pc * getProtocolConfig() const { return m_config; }; + +protected: + void ClearConfigObj(); + + /* the protocol configuration */ + Pc * m_config; + /* the current input packet */ + const P * m_curr_packet_in; + +}; + + +template <class P, class Pc> TrcPktDecodeBase<P, Pc>::TrcPktDecodeBase(const char *component_name) : + TrcPktDecodeI(component_name), + m_config(0) +{ +} + +template <class P, class Pc> TrcPktDecodeBase<P, Pc>::TrcPktDecodeBase(const char *component_name, int instIDNum) : + TrcPktDecodeI(component_name,instIDNum), + m_config(0) +{ +} + +template <class P, class Pc> TrcPktDecodeBase<P, Pc>::~TrcPktDecodeBase() +{ + ClearConfigObj(); +} + +template <class P, class Pc> ocsd_datapath_resp_t TrcPktDecodeBase<P, Pc>::PacketDataIn( const ocsd_datapath_op_t op, + const ocsd_trc_index_t index_sop, + const P *p_packet_in) +{ + ocsd_datapath_resp_t resp = OCSD_RESP_CONT; + if(!checkInit()) + { + LogError(ocsdError(OCSD_ERR_SEV_ERROR,OCSD_ERR_NOT_INIT,init_err_msg)); + return OCSD_RESP_FATAL_NOT_INIT; + } + + switch(op) + { + case OCSD_OP_DATA: + if(p_packet_in == 0) + { + LogError(ocsdError(OCSD_ERR_SEV_ERROR,OCSD_ERR_INVALID_PARAM_VAL)); + resp = OCSD_RESP_FATAL_INVALID_PARAM; + } + else + { + m_curr_packet_in = p_packet_in; + m_index_curr_pkt = index_sop; + resp = processPacket(); + } + break; + + case OCSD_OP_EOT: + resp = onEOT(); + break; + + case OCSD_OP_FLUSH: + resp = onFlush(); + break; + + case OCSD_OP_RESET: + resp = onReset(); + break; + + default: + LogError(ocsdError(OCSD_ERR_SEV_ERROR,OCSD_ERR_INVALID_PARAM_VAL)); + resp = OCSD_RESP_FATAL_INVALID_OP; + break; + } + return resp; +} + + /* protocol configuration */ +template <class P, class Pc> ocsd_err_t TrcPktDecodeBase<P, Pc>::setProtocolConfig(const Pc *config) +{ + ocsd_err_t err = OCSD_ERR_INVALID_PARAM_VAL; + if(config != 0) + { + ClearConfigObj(); // remove any current config + m_config = new (std::nothrow) Pc(*config); // make a copy of the config - don't rely on the object passed in being valid outside the context of the call. + if(m_config != 0) + { + err = onProtocolConfig(); + if(err == OCSD_OK) + m_config_init_ok = true; + } + else + err = OCSD_ERR_MEM; + } + return err; +} + +template <class P, class Pc> void TrcPktDecodeBase<P, Pc>::ClearConfigObj() +{ + if(m_config) + { + delete m_config; + m_config = 0; + } +} + +/** @}*/ +#endif // ARM_TRC_PKT_DECODE_BASE_H_INCLUDED + +/* End of File trc_pkt_decode_base.h */ |