srio_external_loopbk_example.c

dsp tms320c6486的csl例程

     * NOTE: External lookback operation is enabled 
     */
    pSetup->periCntlSetup.loopback = 0;
    
    /* Boot process is over (complete) */
    pSetup->periCntlSetup.bootComplete = bootcomplete;
    
    /* Process TX requests of priority 2, when credit is 1 or greater */
    pSetup->periCntlSetup.txPriority2Wm = CSL_SRIO_TX_PRIORITY_WM_0;
    
    /* Process TX requests of priority 1, when credit is 1 or greater */
    pSetup->periCntlSetup.txPriority1Wm = CSL_SRIO_TX_PRIORITY_WM_0;

    /* Process TX requests of priority 0, when credit is 1 or greater */
    pSetup->periCntlSetup.txPriority0Wm = CSL_SRIO_TX_PRIORITY_WM_0;

    /* Set internal bus priority to 1 (next to lowest) */
    pSetup->periCntlSetup.busTransPriority = CSL_SRIO_BUS_TRANS_PRIORITY_1;
    
    /* UDI buffers are port based not proirity based */
    pSetup->periCntlSetup.bufferMode = CSL_SRIO_1X_MODE_PORT;
    
    /* VBUS clock is of 333 MHz  from TPCC document section 2.3 */
    pSetup->periCntlSetup.prescalar = CSL_SRIO_CLK_PRESCALE_6;
    
    /* Enable port 0 PLL */
    pSetup->periCntlSetup.pllEn = CSL_SRIO_PLL1_ENABLE; 

    /* Enable clocks to all domains */
    pSetup->gblEn = 1;

    /* Enable clock in each domain */
    for (index=0; index<9; index++) { /* 9 domains */
        pSetup->blkEn[index] = 1;    /* Enable each of it */
    }

    /* 8-bit id is 0xAB and 16-bit id is 0xBEEF */
    pSetup->deviceId1 = SRIO_SET_DEVICE_ID(SMALL_DEV_ID, LARGE_DEV_ID);

    /* 8-bit id is 0xAB and 16-bit id is 0xBEEF for multi-cast*/
    pSetup->deviceId2 = SRIO_SET_DEVICE_ID(SMALL_DEV_ID, LARGE_DEV_ID);

	/* configure the SERDES registers */

	/* SERDES PLL configuration for channel 0 */
	pSetup->serDesPllCfg.pllEnable = TRUE;
	pSetup->serDesPllCfg.pllMplyFactor = CSL_SRIO_SERDES_PLL_MPLY_BY_6;

    /* SERDES RX channel 0 enable */
    pSetup->serDesRxChannelCfg[0].enRx = TRUE; 
    pSetup->serDesRxChannelCfg[0].symAlign = CSL_SRIO_SERDES_SYM_ALIGN_COMMA; 
	pSetup->serDesRxChannelCfg[0].los = CSL_SRIO_SERDES_LOS_DET_DISABLE;
	pSetup->serDesRxChannelCfg[0].clockDataRecovery = 0x00;  /* first order */
	pSetup->serDesRxChannelCfg[0].equalizer = 0x01;

    /* SERDES TX channel 0 enable */
    pSetup->serDesTxChannelCfg[0].enTx = TRUE;
    pSetup->serDesTxChannelCfg[0].commonMode = 
                                  CSL_SRIO_SERDES_COMMON_MODE_RAISED;
    pSetup->serDesTxChannelCfg[0].outputSwing = 
                                  CSL_SRIO_SERDES_SWING_AMPLITUDE_1000;
    pSetup->serDesTxChannelCfg[0].enableFixedPhase = TRUE; 
    
    /* SERDES RX channel 1 enable */
    pSetup->serDesRxChannelCfg[1].enRx = TRUE; 
    pSetup->serDesRxChannelCfg[1].symAlign = CSL_SRIO_SERDES_SYM_ALIGN_COMMA; 
	pSetup->serDesRxChannelCfg[1].los = CSL_SRIO_SERDES_LOS_DET_DISABLE;
	pSetup->serDesRxChannelCfg[1].clockDataRecovery = 0x00;  /* first order */
	pSetup->serDesRxChannelCfg[1].equalizer = 0x01;

    /* SERDES TX channel 1 enable */
    pSetup->serDesTxChannelCfg[1].enTx = TRUE; 
    pSetup->serDesTxChannelCfg[1].commonMode = 
                                  CSL_SRIO_SERDES_COMMON_MODE_RAISED;
    pSetup->serDesTxChannelCfg[1].outputSwing = 
                                  CSL_SRIO_SERDES_SWING_AMPLITUDE_1000;
    pSetup->serDesTxChannelCfg[1].enableFixedPhase = TRUE; 

    /* Select flow control ID length 16-bit */
    pSetup->flowCntlIdLen[0] = 1; 


    /* Destination ID of flow n, same ids as we are doing loopback */
    pSetup->flowCntlId[0] = LARGE_DEV_ID; 

    /* Sets the number of address bits generated by the PE as a source and 
     * processed by the PE as the target of an operation as 34 bits
     */
    pSetup->peLlAddrCtrl = CSL_SRIO_ADDR_SELECT_34BIT;

    /* Base device configuration */
    pSetup->devIdSetup.smallTrBaseDevId =  SMALL_DEV_ID;
    pSetup->devIdSetup.largeTrBaseDevId =  LARGE_DEV_ID;
    pSetup->devIdSetup.hostBaseDevId =  LARGE_DEV_ID;

    /* Port General configuration */
    pSetup->portGenSetup.portLinkTimeout = 0xFFFFF;  /* 215 ms */
    pSetup->portGenSetup.portRespTimeout = 0xFFFFF;  /* 215 ms */
    pSetup->portGenSetup.hostEn = 1;                 /* It is a slave */
    pSetup->portGenSetup.masterEn = 1;     /* This device can issue requests */

    /* Port control configuration */
    pSetup->portCntlSetup[0].portDis = 0;        /* Do not disable Port 0 */
    pSetup->portCntlSetup[0].outPortEn = 1;      /* Output on Port 0 enabled */
    pSetup->portCntlSetup[0].inPortEn = 1;       /* Input on Port 0 enabled */
    pSetup->portCntlSetup[0].portWidthOverride =
                CSL_SRIO_PORT_WIDTH_NO_OVERRIDE; /* 4 line port */
    pSetup->portCntlSetup[0].errCheckDis = 0;    /* Err check enabled */
    pSetup->portCntlSetup[0].multicastRcvEn = 1; /* MltCast receive enabled */
    pSetup->portCntlSetup[0].stopOnPortFailEn = 1; /* Stop on fail */
    pSetup->portCntlSetup[0].dropPktEn = 1;      /* Drop PKT */
    pSetup->portCntlSetup[0].portLockoutEn = 0;  /* Send any PKT */
    

    /* Enable all logical/transport errors */
    pSetup->lgclTransErrEn = CSL_SRIO_IO_ERR_RESP_ENABLE |
                             CSL_SRIO_ILL_TRANS_DECODE_ENABLE |
                             CSL_SRIO_ILL_TRANS_TARGET_ERR_ENABLE |
                             CSL_SRIO_PKT_RESP_TIMEOUT_ENABLE |
                             CSL_SRIO_UNSOLICITED_RESP_ENABLE |
                             CSL_SRIO_UNSUPPORTED_TRANS_ENABLE;

    /* Enable all Port errors */
    
    pSetup->portErrSetup[0].portErrRateEn =
                            CSL_SRIO_ERR_IMP_SPECIFIC_ENABLE |
                            CSL_SRIO_CORRUPT_CNTL_SYM_ENABLE |
                            CSL_SRIO_CNTL_SYM_UNEXPECTED_ACKID_ENABLE |
                            CSL_SRIO_RCVD_PKT_NOT_ACCPT_ENABLE |
                            CSL_SRIO_PKT_UNEXPECTED_ACKID_ENABLE |
                            CSL_SRIO_RCVD_PKT_WITH_BAD_CRC_ENABLE |
                            CSL_SRIO_RCVD_PKT_OVER_276B_ENABLE |
                            CSL_SRIO_NON_OUTSTANDING_ACKID_ENABLE |
                            CSL_SRIO_PROTOCOL_ERROR_ENABLE |
                            CSL_SRIO_UNSOLICITED_ACK_CNTL_SYM_ENABLE |
                            CSL_SRIO_LINK_TIMEOUT_ENABLE;

    /* Decrement error rate counter every second */ 
    pSetup->portErrSetup[0].prtErrRtBias = CSL_SRIO_ERR_RATE_BIAS_1S;

    /* Allow only 2 errors after error threshold is reached */ 
    pSetup->portErrSetup[0].portErrRtRec = CSL_SRIO_ERR_RATE_COUNT_2;

    /*  Port error setup */ 
    pSetup->portErrSetup[0].portErrRtFldThresh = 10;   /* Err threshold = 10 */
    pSetup->portErrSetup[0].portErrRtDegrdThresh = 10; /* Err degrade
                                                          threshold = 10 */
    
    
    /* This configures the SP_IP_MODE register */
    /*
       IDLE_ERR_DIS    - 0b0;  IDLE Error checking enabled
       TX_FIFO_BYP ASS - 0b0;  The TX_FIFO is operational
       PW_DIS          - 0b0;  Port-Write Error reporting is enabled
       TGT_ID_DIS      - 0b0;  packet accepted if DestID != BaseID
       SELF_RST        - 0b0;  Self reset disabled
       MLTC_EN         - 0b1;  Multicast-Event Interrupt Enable 
       RST_EN          - 0b1;  Reset Interrupt Enable
       PW_EN           - 0b1;  Port-Write-In Interrupt Enable

       Not writing into clear bits, assuming they are cleared on reset
    */
    pSetup->portIpModeSet = 0x0000002A;

    /* Configure the SP_IP_PRESCALE register assuming 333 MHz frequency */
    pSetup->portIpPrescalar = 33; 

    /*  Port-Write Timer. The timer defines a period to repeat sending an error
     *  reporting Port-Write request for software assistance. The timer stopped 
     *  by software writing to the error detect registers 900 ms
     */
    pSetup->pwTimer = CSL_SRIO_PW_TIME_8;

    /* Port control independent error reporting enable. Macros can be ORed
     *  to get the value
     */

    /*
       TX_FLW        - 0;     Receive link flow control
       SOFT_REC      - 0;     Hardware controlled error recovery 
       FORCE_REINIT  - 0;     Reinitialization process NOT forced
       TRANS_MODE    - 01;    transfer mode - Store & Forward Mode 
       DEBUG         - 1;     Debug enable
       SEND_DBG_PKT  - 0;     Do not force a debug packet
       ILL_TRANS_EN  - 1;     Illegal Transfer Error reporting Enable
       MAX_RETRY_EN  - 1;     Max_retry_error report enable
       MAX_RETRY_THR - 0x01;  Maximum Retry Threshold Trigger
       IRQ_EN        - 1;     Interrupt error report Enable
    */ 
    pSetup->portCntlIndpEn[0] = 0x01A20180; 
}


void enableSRIO()
{
    CSL_PscObj pscObj;
	CSL_PscHandle hPsc;
	CSL_Status status;
	CSL_PscPowerDomain pwrDmn = CSL_PSC_PWRDMN_SRIO;
	CSL_PscPeripherals module = CSL_PSC_MODULE_SRIO;
	Uint32 response = 0;

	memset(&pscObj, 0, sizeof(CSL_PscObj));      
    
    /* Enable SRIO in DEVSTAT register */
	((CSL_DevRegs *)CSL_DEV_REGS)->DEVSTAT_KEY = 0x0E3C5A78;
	CSL_FINST(((CSL_DevRegs *)CSL_DEV_REGS)->DEVSTAT, DEV_DEVSTAT_RIO_EN, ENABLE);

    /* Init PSC module */
	CSL_pscInit(NULL);

    /* Open PSC module to get a Handle */
	hPsc = CSL_pscOpen(&pscObj, CSL_PSC, NULL, &status);

    /* Enable clock for the specified module SRIO */
	CSL_pscHwControl(hPsc, CSL_PSC_CMD_ENABLE_MODULE, &module);
	/*Enable SRIO Power domain GO transition */
	CSL_pscHwControl(hPsc, CSL_PSC_CMD_PWRDMN_TRNS, &pwrDmn);

	do{
    	CSL_pscGetHwStatus(hPsc, CSL_PSC_QUERY_PWRDMN_TRANS_STAT, (void *)&response);
		response &= (1 << CSL_PSC_PWRDMN_SRIO);
	}while(response != 0x0);

	/* Close the PSC module */
	CSL_pscClose(hPsc);
}