/* IBM_PROLOG_BEGIN_TAG */ /* This is an automatically generated prolog. */ /* */ /* $Source: src/usr/sbeio/sbe_fifodd.H $ */ /* */ /* OpenPOWER HostBoot Project */ /* */ /* Contributors Listed Below - COPYRIGHT 2012,2017 */ /* [+] International Business Machines Corp. */ /* */ /* */ /* Licensed under the Apache License, Version 2.0 (the "License"); */ /* you may not use this file except in compliance with the License. */ /* You may obtain a copy of the License at */ /* */ /* http://www.apache.org/licenses/LICENSE-2.0 */ /* */ /* Unless required by applicable law or agreed to in writing, software */ /* distributed under the License is distributed on an "AS IS" BASIS, */ /* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */ /* implied. See the License for the specific language governing */ /* permissions and limitations under the License. */ /* */ /* IBM_PROLOG_END_TAG */ #ifndef __SBE_FIFODD_H #define __SBE_FIFODD_H /** * @file sbe_fifodd.H * @brief SBE service provider declaration */ #include #include #include #include #include #include namespace SBEIO { //----------------------------------------------------------------------------- // Interfaces to the SBE FIFO device driver to be used by clients // within this component. //----------------------------------------------------------------------------- /** @class SbeFifo * * @brief Class for SBE/PSU communication * */ class SbeFifo { public: /** * @brief get the instance of this class * * @return the (one and only) instance of SbeFifo */ static SbeFifo & getTheInstance(); /** * @brief enums for SBE command class */ enum fifoCommandClass { SBE_FIFO_CLASS_UNKNOWN = 0, SBE_FIFO_CLASS_IPL_CONTROL = 0xA1, SBE_FIFO_CLASS_SCOM_ACCESS = 0xA2, SBE_FIFO_CLASS_RING_ACCESS = 0xA3, SBE_FIFO_CLASS_MEMORY_ACCESS = 0xA4, SBE_FIFO_CLASS_REGISTER_ACCESS = 0xA5, SBE_FIFO_CLASS_ARRAY_ACCESS = 0xA6, SBE_FIFO_CLASS_INSTRUCTION_CONTROL = 0xA7, SBE_FIFO_CLASS_GENERIC_MESSAGE = 0xA8, SBE_FIFO_CLASS_MPIPL_COMMANDS = 0xA9, }; /** * @brief enums for FIFO SCOM Access Messages */ enum fifoScomAccessMessage { SBE_FIFO_CMD_GET_SCOM = 0x01, SBE_FIFO_CMD_PUT_SCOM = 0x02, SBE_FIFO_CMD_MODIFY_SCOM = 0x03, SBE_FIFO_CMD_PUT_SCOM_UNDER_MASK = 0x04, }; /** * @brief enums for FIFO MPIPL Messages */ enum fifoMpiplMessage { SBE_FIFO_CMD_ENTER_MPIPL = 0x01, SBE_FIFO_CMD_CONTINUE_MPIPL = 0x02, SBE_FIFO_CMD_STOP_CLOCKS = 0x03, }; /** * @brief Struct for FIFO Continue MPIPL request * */ struct fifoContinueMpiplRequest { uint32_t wordCnt; uint16_t reserved; uint8_t commandClass; uint8_t command; fifoContinueMpiplRequest() : wordCnt(2), reserved(0) { } } PACKED; /** * @brief Struct for FIFO Get SCOM request * */ struct fifoGetScomRequest { uint32_t wordCnt; uint16_t reserved; uint8_t commandClass; uint8_t command; uint64_t address; // Register Address (0..31) + (32..63) fifoGetScomRequest() : wordCnt(4), reserved(0) { } } PACKED; /** * @brief Struct for FIFO Put SCOM request * */ struct fifoPutScomRequest { uint32_t wordCnt; uint16_t reserved; uint8_t commandClass; uint8_t command; uint64_t address; // Register Address (0..31) + (32..63) uint64_t data; // Data (0..31) + (32..63) fifoPutScomRequest() : wordCnt(6), reserved(0), data(0) { } } PACKED; /** * @brief Struct for FIFO Put SCOM Under Mask request * */ struct fifoPutScomUnderMaskRequest { uint32_t wordCnt; uint16_t reserved; uint8_t commandClass; uint8_t command; uint64_t address; // Register Address (0..31) + (32..63) uint64_t data; // Data (0..31) + (32..63) uint64_t mask; // Mask Data (0..31) + (32..63) fifoPutScomUnderMaskRequest() : wordCnt(8), reserved(0), data(0), mask(0) { } } PACKED; /** * @brief Struct for FIFO status * */ struct statusHeader { uint16_t magic; // set to 0xC0DE uint8_t commandClass; uint8_t command; uint16_t primaryStatus; uint16_t secondaryStatus; } PACKED; const uint16_t FIFO_STATUS_MAGIC = 0xC0DE; /** * @brief Struct for FIFO Put SCOM and Put SCOM under mask response * * The actual number of returned words varies based on whether there was * an error. */ struct fifoPutScomResponse { statusHeader status; struct fapi2::ffdc_struct ffdc; // ffdc data uint32_t status_distance; // distance to status fifoPutScomResponse() {} } PACKED; /** * @brief Struct for FIFO Get SCOM response * * The actual number of returned words varies based on whether there was * an error. */ struct fifoGetScomResponse { uint64_t data; // Data (0..31) + (32..63) statusHeader status; struct fapi2::ffdc_struct ffdc; // ffdc data uint32_t status_distance; // distance to status fifoGetScomResponse() {} } PACKED; /** * @brief Struct for FIFO Continue MPIPL response * * The actual number of returned words varies based on whether there was * an error. */ struct fifoContinueMpiplResponse { statusHeader status; struct fapi2::ffdc_struct ffdc; // ffdc data uint32_t status_distance; // distance to status fifoContinueMpiplResponse() {} } PACKED; /** * @Brief perform SBE FIFO chip-op * * @param[in] i_target Target to access * @param[in] i_pFifoRequest Pointer to request * @param[in] i_pFifoResponse Pointer to response * @param[in] i_responseSize Size of response in bytes * * @return errlHndl_t Error log handle on failure. */ errlHndl_t performFifoChipOp(TARGETING::Target * i_target, uint32_t * i_pFifoRequest, uint32_t * i_pFifoResponse, uint32_t i_responseSize); /** * @Brief perform SBE FIFO reset * * NOT to be used on running SBE -- only for IPL * * @param[in] i_target Target to access * * @return errlHndl_t Error log handle on failure. */ errlHndl_t performFifoReset(TARGETING::Target * i_target); protected: /** * @Brief Constructor */ SbeFifo(); /** * @Brief Destructor */ ~SbeFifo(); /** * @brief populate the iv_ffdcPackageBuffer * @param[in] i_data FFDC error data * @param[in] i_len data buffer len to copy */ void writeFFDCBuffer(const void * i_data, uint32_t i_len); private: /** * @brief Write FFDC package buffer - holds information exchanged * between SBE and HB */ void * iv_ffdcPackageBuffer; /** * @brief FFDC package needs to be 2 pages */ const uint8_t ffdcPackageSize = 2; /** * @brief zero out the FFDC package buffer */ void initFFDCPackageBuffer(); //------------------------------------------------------------------- // Local definitions for the device driver //------------------------------------------------------------------- /** * @brief send a request via SBE FIFO * * @param[in] i_target Target to access * @param[in] i_pFifoRequest Pointer to FIFO request. * First word has count of unit32_t words. * @return errlHndl_t Error log handle on failure. */ errlHndl_t writeRequest(TARGETING::Target * i_target, uint32_t * i_pFifoRequest); /** * @brief read the response via SBE FIFO * * @param[in] i_target Target to access * @param[in] i_pFifoRequest Pointer to FIFO request. * @param[out] o_pFifoResponse Pointer to FIFO response. * @param[in] i_responseSize Size of response buffer in bytes. * @return errlHndl_t Error log handle on failure. */ errlHndl_t readResponse(TARGETING::Target * i_target, uint32_t * i_pFifoRequest, uint32_t * o_pFifoResponse, uint32_t i_responseSize); /** * @brief poll until uplift Fifo has room to write into * * @param[in] i_target Target to access * @return errlHndl_t Error log handle on failure. */ errlHndl_t waitUpFifoReady(TARGETING::Target * i_target); /** * @brief poll until downlift Fifo has a value to read * or has hit EOT. * * @param[in] i_target Target to access * @param[out] o_status Down load door bell status * @return errlHndl_t Error log handle on failure. */ errlHndl_t waitDnFifoReady(TARGETING::Target * i_target, uint32_t & o_status); /** * @brief encapulate FSI read * * @param[in] i_target Target to access * @param[in] i_addr FSI addressd * @param[out] o_pData Pointer to receive data * @return errlHndl_t Error log handle on failure. */ errlHndl_t readFsi(TARGETING::Target * i_target, uint64_t i_addr, uint32_t * o_pData); /** * @brief encapulate FSI write * * @param[in] i_target Target to access * @param[in] i_addr FSI addressd * @param[in] i_pData Pointer to receive data * @return errlHndl_t Error log handle on failure. */ errlHndl_t writeFsi(TARGETING::Target * i_target, uint64_t i_addr, uint32_t * i_pData); /** * @brief SBE FIFO FSI register addresses */ enum fifoRegisterAddress { SBE_FIFO_UPFIFO_DATA_IN = 0x00002400, SBE_FIFO_UPFIFO_STATUS = 0x00002404, SBE_FIFO_UPFIFO_SIG_EOT = 0x00002408, SBE_FIFO_UPFIFO_REQ_RESET = 0x0000240C, SBE_FIFO_DNFIFO_DATA_OUT = 0x00002440, SBE_FIFO_DNFIFO_STATUS = 0x00002444, SBE_FIFO_DNFIFO_RESET = 0x00002450, SBE_FIFO_DNFIFO_ACK_EOT = 0x00002454, SBE_FIFO_DNFIFO_MAX_TSFR = 0x00002458, }; enum sbeFifoUpstreamStatus { // Reserved UPFIFO_STATUS_RESERVED0 =0xC0000000, // Parity Error: dequeuing operation has detected a data parity error UPFIFO_STATUS_PARITY_ERROR =0x20000000, // Reserved UPFIFO_STATUS_RESERVED3 =0x1C000000, // External Service Processor (SP) is requesting a FIFO reset UPFIFO_STATUS_REQ_RESET_FR_SP =0x02000000, // SBE is requesting a FIFO reset through downstream path UPFIFO_STATUS_REQ_RESET_FR_SBE =0x01000000, // A fifo entry has been dequeued with set EOT flag UPFIFO_STATUS_DEQUEUED_EOT_FLAG =0x00800000, // Reserved UPFIFO_STATUS_RESERVED9 =0x00400000, // Upstream FIFO is full UPFIFO_STATUS_FIFO_FULL =0x00200000, // Upstream FIFO is empty UPFIFO_STATUS_FIFO_EMPTY =0x00100000, // Number of entries currently in FIFO UPFIFO_STATUS_FIFO_ENTRY_COUNT =0x000F0000, // Valid flags of entries currently in FIFO UPFIFO_STATUS_FIFO_VALID_FLAGS =0x0000FF00, // EOT flags of entries currently in FIFO UPFIFO_STATUS_FIFO_EOT_FLAGS =0x000000FF, }; enum sbeUpstreamEot { FSB_UPFIFO_SIG_EOT =0x80000000, }; enum sbeFifoReqUpstreamFifoReset { FSB_UPFIFO_REQ_RESET =0x80000000, }; enum sbeFifoDownstreamStatus { // Reserved DNFIFO_STATUS_RESERVED0 =0xC0000000, // Parity Error: dequeuing operation has detected a data parity error DNFIFO_STATUS_PARITY_ERROR =0x20000000, // Reserved DNFIFO_STATUS_RESERVED3 =0x1C000000, // SBE is requesting a FIFO reset DNFIFO_STATUS_REQ_RESET_FR_SP =0x02000000, // Service Processor (SP) is requesting a FIFO reset // through downstream path DNFIFO_STATUS_REQ_RESET_FR_SBE =0x01000000, // A fifo entry has been dequeued with set EOT flag DNFIFO_STATUS_DEQUEUED_EOT_FLAG =0x00800000, // Reserved DNFIFO_STATUS_RESERVED9 =0x00400000, // Downstream FIFO is full DNFIFO_STATUS_FIFO_FULL =0x00200000, // Downstream FIFO is empty DNFIFO_STATUS_FIFO_EMPTY =0x00100000, // Number of currently hold entries DNFIFO_STATUS_FIFO_ENTRY_COUNT =0x000F0000, // Valid flags of ALL currently hold entries DNFIFO_STATUS_FIFO_VALID_FLAGS =0x0000FF00, // EOT flags of ALL currently hold entries DNFIFO_STATUS_FIFO_EOT_FLAGS =0x000000FF, }; enum sbeFifoReqDownstreamFifoReset { FSB_DNFIFO_REQ_RESET =0x80000000, }; enum sbeDownstreamEot { FSB_DNFIFO_ACK_EOT =0x80000000, }; enum { MAX_UP_FIFO_TIMEOUT_NS = 10*NS_PER_MSEC }; //=10ms }; // End of classSbeFifo } #endif