from migen.fhdl.std import * from migen.genlib.resetsync import AsyncResetSynchronizer _K28_5 = 0b1010000011 def _ones(width): return 2**width-1 class DRP(Record): def __init__(self): layout = [ ("clk", 1), ("en", 1), ("rdy", 1), ("we", 1) ("addr", 8), ("di", 16), ("do", 16) ] Record.__init__(self, layout) class GTXE2_CHANNEL(Module): def __init__(self, pads, start_speed="SATA_III"): self.drp = DRP() # Channel self.qpllclk = Signal() self.qpllrefclk = Signal() # Channel - Ref Clock Ports self.gtrefclk0 = Signal() # Channel PLL self.cpllfbclklost = Signal() self.cplllock = Signal() self.cplllockdetclk = Signal() self.cpllrefclklost = Signal() self.cpllreset = Signal() # Eye Scan Ports self.eyescandataerror = Signal() # Receive Ports self.rxuserrdy = Signal() # Receive Ports - 8b10b Decoder self.rxchariscomma = Signal(2) self.rxcharisk = Signal(2) self.rxdisperr = Signal(2) self.rxnotintable = Signal(2) # Receive Ports - Comma Detection and Alignment self.rxmcommaalignen = Signal() self.rxpcommaalignen = Signal() # Receive Ports - RX Data Path interface self.gtrxreset = Signal() self.rxdata = Signal(16) self.rxoutclk = Signal() self.rxusrclk = Signal() self.rxusrclk2 = Signal() # Receive Ports - RX Driver,OOB signalling,Coupling and Eq.,CDR self.rxcdrlock = Signal() self.rxelecidle = Signal() # Receive Ports - RX Elastic Buffer and Phase Alignment Ports self.rxdlyen = Signal() self.rxdlysreset = Signal() self.rxdlysresetdone = Signal() self.rxphalign = Signal() self.rxphaligndone = Signal() self.rxphalignen = Signal() self.rxphdlyreset = Signal() self.rxphmonitor = Signal(5) self.rxphslipmonitor = Signal(5) # Receive Ports - RX PLL Ports self.rxresetdone = Signal() # Receive Ports - RX Ports for SATA self.rxcominitdet = Signal() self.rxcomwakedet = Signal() # Transmit Ports self.txuserrdy = Signal() # Transmit Ports - 8b10b Encoder Control Ports self.txcharisk = Signal(2) # Transmit Ports - TX Buffer and Phase Alignment Ports self.txdlyen = Signal() self.txdlysreset = Signal() self.txdlysresetdone = Signal() self.txphalign = Signal() self.txphaligndone = Signal() self.txphalignen = Signal() self.txphdlyreset = Signal() self.txphinit = Signal() self.txphinitdone = Signal() # Transmit Ports - TX Data Path interface self.gttxreset = Signal() self.txdata = Signal() self.txoutclk = Signal() self.txoutclkfabric = Signal() self.txoutclkpcs = Signal() self.txusrclk = Signal() self.txusrclk2 = Signal() # Transmit Ports - TX PLL Ports self.txresetdone = Signal() # Transmit Ports - TX Ports for PCI Express self.txelecidle = Signal() # Transmit Ports - TX Ports for SATA self.txcomfinish = Signal() self.txcominit = Signal() self.txcomwake = Signal() self.rxrate = Signal(3) self.rxratedone = Signal() self.txrate = Signal(3) self.txratedone = Signal() self.rxcdrreset = Signal() self.rxlpme = Signal() # startup config div_config = { "SATA_I" : 4, "SATA_II" : 2, "SATA_III" : 1 } rxout_div = div_config[start_speed] txout_div = div_config[start_speed] cdr_config = { "SATA_I" : 0x0380008BFF40100008 "SATA_II" : 0x0380008BFF40200008 "SATA_III" : 0X0380008BFF20200010 } rxcdr_cfg = cdr_config[start_speed] self.specials += \ Instance("GTXE2_CHANNEL", # Simulation-Only Attributes p_SIM_RECEIVER_DETECT_PASS="TRUE", p_SIM_TX_EIDLE_DRIVE_LEVEL="X", p_SIM_RESET_SPEEDUP="TRUE", p_SIM_CPLLREFCLK_SEL=0b001, p_SIM_VERSION="4.0", # RX Byte and Word Alignment Attributes p_ALIGN_COMMA_DOUBLE="FALSE", p_ALIGN_COMMA_ENABLE=_ones(10), p_ALIGN_COMMA_WORD=2, p_ALIGN_MCOMMA_DET="TRUE", p_ALIGN_MCOMMA_VALUE=_K28_5, p_ALIGN_PCOMMA_DET="TRUE", p_ALIGN_PCOMMA_VALUE=~_K28_5, p_SHOW_REALIGN_COMMA="FALSE", p_RXSLIDE_AUTO_WAIT=7, p_RXSLIDE_MODE="OFF", p_RX_SIG_VALID_DLY=10, # RX 8B/10B Decoder Attributes p_RX_DISPERR_SEQ_MATCH="TRUE", p_DEC_MCOMMA_DETECT="TRUE", p_DEC_PCOMMA_DETECT="TRUE", p_DEC_VALID_COMMA_ONLY="FALSE", # RX Clock Correction Attributes p_CBCC_DATA_SOURCE_SEL="DECODED", p_CLK_COR_SEQ_2_USE="FALSE", p_CLK_COR_KEEP_IDLE="FALSE", p_CLK_COR_MAX_LAT=9, p_CLK_COR_MIN_LAT=7, p_CLK_COR_PRECEDENCE="TRUE", p_CLK_COR_REPEAT_WAIT=0, p_CLK_COR_SEQ_LEN=1, p_CLK_COR_SEQ_1_ENABLE=_ones(4), p_CLK_COR_SEQ_1_ENABLE=0, p_CLK_COR_SEQ_1_1=0, p_CLK_COR_SEQ_1_1=0, p_CLK_COR_SEQ_1_2=0, p_CLK_COR_SEQ_1_3=0, p_CLK_COR_SEQ_1_4=0, p_CLK_CORRECT_USE="FALSE", p_CLK_COR_SEQ_2_ENABLE=_ones(4), p_CLK_COR_SEQ_2_1=0, p_CLK_COR_SEQ_2_2=0, p_CLK_COR_SEQ_2_3=0, p_CLK_COR_SEQ_2_4=0, # RX Channel Bonding Attributes p_CHAN_BOND_KEEP_ALIGN="FALSE", p_CHAN_BOND_MAX_SKEW=1, p_CHAN_BOND_SEQ_LEN=1, p_CHAN_BOND_SEQ_1_1=0, p_CHAN_BOND_SEQ_1_1=0, p_CHAN_BOND_SEQ_1_2=0, p_CHAN_BOND_SEQ_1_3=0, p_CHAN_BOND_SEQ_1_4=0, p_CHAN_BOND_SEQ_1_ENABLE=_ones(4), p_CHAN_BOND_SEQ_2_1=0, p_CHAN_BOND_SEQ_2_2=0, p_CHAN_BOND_SEQ_2_3=0, p_CHAN_BOND_SEQ_2_4=0, p_CHAN_BOND_SEQ_2_ENABLE=_ones(4), p_CHAN_BOND_SEQ_2_USE="FALSE", p_FTS_DESKEW_SEQ_ENABLE=_ones(4), p_FTS_LANE_DESKEW_CFG=_ones(4), p_FTS_LANE_DESKEW_EN="FALSE", # RX Margin Analysis Attributes p_ES_CONTROL=0, p_ES_ERRDET_EN="FALSE", p_ES_EYE_SCAN_EN="TRUE", p_ES_HORZ_OFFSET=0, p_ES_PMA_CFG=0, p_ES_PRESCALE=0, p_ES_QUALIFIER=0, p_ES_QUAL_MASK=0, p_ES_SDATA_MASK=0, p_ES_VERT_OFFSET=0, # FPGA RX Interface Attributes p_RX_DATA_WIDTH=20, # PMA Attributes p_OUTREFCLK_SEL_INV=0b11, p_PMA_RSV=0, p_PMA_RSV2=0x2050, p_PMA_RSV3=0, p_PMA_RSV4=0, p_RX_BIAS_CFG=0b100, p_DMONITOR_CFG=0xA00, p_RX_CM_SEL=0b11, p_RX_CM_TRIM=0b010, p_RX_DEBUG_CFG=0, p_RX_OS_CFG=0b10000000, p_TERM_RCAL_CFG=0, p_TERM_RCAL_OVRD=0, p_TST_RSV=0, p_RX_CLK25_DIV=6, p_TX_CLK25_DIV=6, p_UCODEER_CLR=0, # PCI Express Attributes p_PCS_PCIE_EN="FALSE", # PCS Attributes p_PCS_RSVD_ATTR=0, # RX Buffer Attributes p_RXBUF_ADDR_MODE="FAST", p_RXBUF_EIDLE_HI_CNT=0b1000, p_RXBUF_EIDLE_LO_CNT=0, p_RXBUF_EN="FALSE", p_RX_BUFFER_CFG=0, p_RXBUF_RESET_ON_CB_CHANGE="TRUE", p_RXBUF_RESET_ON_COMMAALIGN="FALSE", p_RXBUF_RESET_ON_EIDLE="FALSE", p_RXBUF_RESET_ON_RATE_CHANGE="TRUE", p_RXBUFRESET_TIME=1, p_RXBUF_THRESH_OVFLW=61, p_RXBUF_THRESH_OVRD="FALSE", p_RXBUF_THRESH_UNDFLW=4, p_RXDLY_CFG=0x1f, p_RXDLY_LCFG=0x30, p_RXDLY_TAP_CFG=0, p_RXPH_CFG=0, p_RXPHDLY_CFG=0x084820, p_RXPH_MONITOR_SEL=0, p_RX_XCLK_SEL="RXUSR", p_RX_DDI_SEL=0, p_RX_DEFER_RESET_BUF_EN="TRUE", #CDR Attributes p_RXCDR_CFG=rxcdr_cfg, p_RXCDR_FR_RESET_ON_EIDLE=0, p_RXCDR_HOLD_DURING_EIDLE=0, p_RXCDR_PH_RESET_ON_EIDLE=0, p_RXCDR_LOCK_CFG=0b010101, # RX Initialization and Reset Attributes p_RXCDRFREQRESET_TIME=1, p_RXCDRPHRESET_TIME=1, p_RXISCANRESET_TIME=1, p_RXPCSRESET_TIME=1, p_RXPMARESET_TIME=3, # RX OOB Signaling Attributes p_RXOOB_CFG=0b0000110, # RX Gearbox Attributes p_RXGEARBOX_EN="FALSE", p_GEARBOX_MODE=0, # PRBS Detection Attribute p_RXPRBS_ERR_LOOPBACK=0, # Power-Down Attributes p_PD_TRANS_TIME_FROM_P2=0x03c, p_PD_TRANS_TIME_NONE_P2=0x3c, p_PD_TRANS_TIME_TO_P2=0x64, # RX OOB Signaling Attributes p_SAS_MAX_COM=64, p_SAS_MIN_COM=36, p_SATA_BURST_SEQ_LEN=0b0101, p_SATA_BURST_VAL=0b100, p_SATA_EIDLE_VAL=0b100, p_SATA_MAX_BURST=8, p_SATA_MAX_INIT=21, p_SATA_MAX_WAKE=7, p_SATA_MIN_BURST=4, p_SATA_MIN_INIT=12, p_SATA_MIN_WAKE=4, # RX Fabric Clock Output Control Attributes p_TRANS_TIME_RATE=0x0e, # TX Buffer Attributes p_TXBUF_EN="FALSE", p_TXBUF_RESET_ON_RATE_CHANGE="FALSE", p_TXDLY_CFG=0x1f, p_TXDLY_LCFG=0x030, p_TXDLY_TAP_CFG=0, p_TXPH_CFG=0x0780, p_TXPHDLY_CFG=0x084020, p_TXPH_MONITOR_SEL=0, p_TX_XCLK_SEL="TXUSR", # FPGA TX Interface Attributes p_TX_DATA_WIDTH=20, # TX Configurable Driver Attributes p_TX_DEEMPH0=0, p_TX_DEEMPH1=0, p_TX_EIDLE_ASSERT_DELAY=0b110, p_TX_EIDLE_DEASSERT_DELAY=0b100, p_TX_LOOPBACK_DRIVE_HIZ="FALSE", p_TX_MAINCURSOR_SEL=0, p_TX_DRIVE_MODE="DIRECT", p_TX_MARGIN_FULL_0=0b1001110, p_TX_MARGIN_FULL_1=0b1001001, p_TX_MARGIN_FULL_2=0b1000101, p_TX_MARGIN_FULL_3=0b1000010, p_TX_MARGIN_FULL_4=0b1000000, p_TX_MARGIN_LOW_0=0b1000110, p_TX_MARGIN_LOW_1=0b1000100, p_TX_MARGIN_LOW_2=0b1000010, p_TX_MARGIN_LOW_3=0b1000000, p_TX_MARGIN_LOW_4=0b1000000, # TX Gearbox Attributes p_TXGEARBOX_EN="FALSE", # TX Initialization and Reset Attributes p_TXPCSRESET_TIME=1, p_TXPMARESET_TIME=1, # TX Receiver Detection Attributes p_TX_RXDETECT_CFG=0x1832, p_TX_RXDETECT_REF=0b100, # CPLL Attributes p_CPLL_CFG=0xBC07DC, p_CPLL_FBDIV=4, p_CPLL_FBDIV_45=5, p_CPLL_INIT_CFG=0x00001E p_CPLL_LOCK_CFG=0x01e8, p_CPLL_REFCLK_DIV=1, p_RXOUT_DIV=rxout_div, p_TXOUT_DIV=txout_div, p_SATA_CPLL_CFG="VCO_3000MHZ", # RX Initialization and Reset Attributes p_RXDFELPMRESET_TIME=0b0001111, # RX Equalizer Attributes p_RXLPM_HF_CFG=0b00000011110000, p_RXLPM_LF_CFG=0b00000011110000, p_RX_DFE_GAIN_CFG=0b020FEA, p_RX_DFE_H2_CFG=0b000000000000, p_RX_DFE_H3_CFG=0b000001000000, p_RX_DFE_H4_CFG=0b00011110000, p_RX_DFE_H5_CFG=0b00011100000, p_RX_DFE_KL_CFG=0b0000011111110, p_RX_DFE_LPM_CFG=0x0954, p_RX_DFE_LPM_HOLD_DURING_EIDLE=1, p_RX_DFE_UT_CFG=0b10001111000000000, p_RX_DFE_VP_CFG=0b00011111100000011, # Power-Down Attributes p_RX_CLKMUX_PD=1, p_TX_CLKMUX_PD=1, # FPGA RX Interface Attribute p_RX_INT_DATAWIDTH=0, # FPGA TX Interface Attribute p_TX_INT_DATAWIDTH=0, # TX Configurable Driver Attributes p_TX_QPI_STATUS_EN=0, # RX Equalizer Attributes p_RX_DFE_KL_CFG2=0b00110011000100000001100000001100 p_RX_DFE_XYD_CFG=0bb0000000000000, # TX Configurable Driver Attributes p_TX_PREDRIVER_MODE=0, # CPLL Ports o_CPLLFBCLKLOST=self.cpllfbclklost, o_CPLLLOCK=self.cplllock, i_CPLLLOCKDETCLK=self.cplllockdetclk, i_CPLLLOCKEN=1, i_CPLLPD=0, o_CPLLREFCLKLOST=self.cpllrefclklost, i_CPLLREFCLKSEL=0b001, i_CPLLRESET=self.cpllreset, i_GTRSVD=0, i_PCSRSVDIN=0, i_PCSRSVDIN2=0, i_PMARSVDIN=0, i_PMARSVDIN2=0, i_TSTIN=_ones(20), #o_TSTOUT=, # Channel i_CLKRSVD=0, # Channel - Clocking Ports i_GTGREFCLK=0, i_GTNORTHREFCLK0=0, i_GTNORTHREFCLK1=0, i_GTREFCLK0=self.gtrefclk0, i_GTREFCLK1=0, i_GTSOUTHREFCLK0=0, i_GTSOUTHREFCLK1=0, # Channel - DRP Ports i_DRPADDR=self.drp.addr, i_DRPCLK=self.drp.clk, i_DRPDI=self.drp.di, i_DRPDO=self.drp.do, i_DRPEN=self.drp.en, o_DRPRDY=self.drp.rdy, i_DRPWE=self.drp.we, # Clocking Ports #o_GTREFCLKMONITOR=, i_QPLLCLK=self.qpllclk i_QPLLCLK=self.qpllclk, i_QPLLREFCLK=self.qpllrefclk, i_QPLLREFCLK=self.qpllrefclk, i_RXSYSCLKSEL=0b00, i_TXSYSCLKSEL=0b00, # Digital Monitor Ports #o_DMONITOROUT=, # FPGA TX Interface Datapath Configuration i_TX8B10BEN=1, # Loopback Ports i_LOOPBACK=0, # PCI Express Ports #o_PHYSTATUS=, i_RXRATE=self.RXRATE, #o_RXVALID=, # Power-Down Ports i_RXPD=0b00, i_TXPD=0b00, # RX 8B/10B Decoder Ports i_SETERRSTATUS=0, # RX Initialization and Reset Ports i_EYESCANRESET=0, i_RXUSERRDY=self.rxuserrdy, # RX Margin Analysis Ports o_EYESCANDATAERROR=self.eyescandataerror, i_EYESCANMODE=0, i_EYESCANTRIGGER=0, # Receive Ports - CDR Ports i_RXCDRFREQRESET=self.rxcdrfreqreset, i_RXCDRHOLD=0, o_RXCDRLOCK=self.rxcrdlock, i_RXCDROVRDEN=0, i_RXCDRRESET=0, i_RXCDRRESETRSV=0, # Receive Ports - Clock Correction Ports #o_RXCLKCORCNT=, # Receive Ports - FPGA RX Interface Datapath Configuration i_RX8B10BEN=1, # Receive Ports - FPGA RX Interface Ports i_RXUSRCLK=self.rxusrclk, i_RXUSRCLK2=self.rxusrclk2, # Receive Ports - FPGA RX interface Ports i_RXDATA=self.rxdata, # Receive Ports - Pattern Checker Ports #o_RXPRBSERR=, i_RXPRBSSEL=0, # Receive Ports - Pattern Checker ports i_RXPRBSCNTRESET=0, # Receive Ports - RX Equalizer Ports i_RXDFEXYDEN=0, i_RXDFEXYDHOLD=0, i_RXDFEXYDOVRDEN=0, # Receive Ports - RX 8B/10B Decoder Ports i_RXDISPERR=self.rxdisperr, o_RXNOTINTABLE=self.RXNOTINTABLE, # Receive Ports - RX AFE i_GTXRXP=pads.rxp i_GTXRXN=pads.rxn, # Receive Ports - RX Buffer Bypass Ports i_RXBUFRESET=0, #o_RXBUFSTATUS=, i_RXDDIEN=1, i_RXDLYBYPASS=0, i_RXDLYEN=self.rxdlyen, i_RXDLYOVRDEN=0, i_RXDLYSRESET=self.rxdlysreset, o_RXDLYSRESETDONE=self.rxdlysresetdone, i_RXPHALIGN=self.rxphalign, o_RXPHALIGNDONE=self.rxphaligndone, i_RXPHALIGNEN=self.rxphalignen, i_RXPHDLYPD=0, i_RXPHDLYRESET=self.rxphdlyreset, o_RXPHMONITOR=self.rxphmonitor, i_RXPHOVRDEN=0, o_RXPHSLIPMONITOR=self.rxphslipmonitor, #o_RXSTATUS=, # Receive Ports - RX Byte and Word Alignment Ports #o_RXBYTEISALIGNED=, #o_RXBYTEREALIGN=, #o_RXCOMMADET=, i_RXCOMMADETEN=1, i_RXMCOMMAALIGNEN=self.rxmcommaalignen, i_RXPCOMMAALIGNEN=self.rxpcommaalignen, # Receive Ports - RX Channel Bonding Ports #o_RXCHANBONDSEQ=, i_RXCHBONDEN=0, i_RXCHBONDLEVEL=0, i_RXCHBONDMASTER=0, #o_RXCHBONDO=, i_RXCHBONDSLAVE=0, # Receive Ports - RX Channel Bonding Ports #o_RXCHANISALIGNED=, #o_RXCHANREALIGN=, # Receive Ports - RX Equalizer Ports i_RXDFEAGCHOLD=0, i_RXDFEAGCOVRDEN=0, i_RXDFECM1EN=0, i_RXDFELFHOLD=0, i_RXDFELFOVRDEN=1, i_RXDFELPMRESET=0, i_RXDFETAP2HOLD=0, i_RXDFETAP2OVRDEN=0, i_RXDFETAP3HOLD=0, i_RXDFETAP3OVRDEN=0, i_RXDFETAP4HOLD=0, i_RXDFETAP4OVRDEN=0, i_RXDFETAP5HOLD=0, i_RXDFETAP5OVRDEN=0, i_RXDFEUTHOLD=0, i_RXDFEUTOVRDEN=0, i_RXDFEVPHOLD=0, i_RXDFEVPOVRDEN=0, i_RXDFEVSEN=0, i_RXLPMLFKLOVRDEN=0, #o_RXMONITOROUT=, i_RXMONITORSEL=0b00, i_RXOSHOLD=0, i_RXOSOVRDEN=0, # Receive Ports - RX Equilizer Ports i_RXLPMHFHOLD=0, i_RXLPMHFOVRDEN=0, i_RXLPMLFHOLD=0, # Receive Ports - RX Fabric ClocK Output Control Ports o_RXRATEDONE=self.rxratedone, # Receive Ports - RX Fabric Output Control Ports o_RXOUTCLK=self.rxoutclk, #o_RXOUTCLKFABRIC=, #o_RXOUTCLKPCS=, i_RXOUTCLKSEL=0b010, # Receive Ports - RX Gearbox Ports #o_RXDATAVALID=, #o_RXHEADER=, #o_RXHEADERVALID=, #o_RXSTARTOFSEQ=, # Receive Ports - RX Gearbox Ports i_RXGEARBOXSLIP=0, # Receive Ports - RX Initialization and Reset Ports i_GTRXRESET=self.gtrxreset, i_RXOOBRESET=0, i_RXPCSRESET=0, i_RXPMARESET=0, # Receive Ports - RX Margin Analysis ports i_RXLPMEN=self.rxlpmen, # Receive Ports - RX OOB Signaling ports #o_RXCOMSASDET=, o_RXCOMWAKEDET=self.rxcomwakedet, # Receive Ports - RX OOB Signaling ports o_RXCOMINITDET=self.rxcominitdet, # Receive Ports - RX OOB signalling Ports o_RXELECIDLE=self.rxelecidle, i_RXELECIDLEMODE=0b00, # Receive Ports - RX Polarity Control Ports i_RXPOLARITY=0, # Receive Ports - RX gearbox ports i_RXSLIDE=0, # Receive Ports - RX8B/10B Decoder Ports o_RXCHARISCOMMA=self.rxchariscomma, o_RXCHARISK=self.rxcharisk, # Receive Ports - Rx Channel Bonding Ports i_RXCHBONDI=0, # Receive Ports -RX Initialization and Reset Ports o_RXRESETDONE=self.rxresetdone, # Rx AFE Ports i_RXQPIEN=0, #o_RXQPISENN=, #o_RXQPISENP=, # TX Buffer Bypass Ports i_TXPHDLYTSTCLK=0, # TX Configurable Driver Ports i_TXPOSTCURSOR=0, i_TXPOSTCURSORINV=0, i_TXPRECURSOR=0, i_TXPRECURSORINV=0, i_TXQPIBIASEN=0, i_TXQPISTRONGPDOWN=0, i_TXQPIWEAKPUP=0, # TX Initialization and Reset Ports i_CFGRESET=self.cfgreset, i_GTTXRESET=self.gttxreset, #o_PCSRSVDOUT=, i_TXUSERRDY=self.txuserrdy, # Transceiver Reset Mode Operation i_GTRESETSEL=self.gtresetsel, i_RESETOVRD=self.resetovrd, # Transmit Ports - 8b10b Encoder Control Ports i_TXCHARDISPMODE=0, i_TXCHARDISPVAL=0, # Transmit Ports - FPGA TX Interface Ports i_TXUSRCLK=self.txusrclk, i_TXUSRCLK2=self.txusrclk2, # Transmit Ports - PCI Express Ports i_TXELECIDLE=self.txelecidle, i_TXMARGIN=0, i_TXRATE=self.txrate, i_TXSWING=0, # Transmit Ports - Pattern Generator Ports i_TXPRBSFORCEERR=0, # Transmit Ports - TX Buffer Bypass Ports i_TXDLYBYPASS=0, i_TXDLYEN=self.txdlyen, i_TXDLYHOLD=0, i_TXDLYOVRDEN=0, i_TXDLYSRESET=self.txdlysreset, o_TXDLYSRESETDONE=self.txdlysresetdone, i_TXDLYUPDOWN=0, i_TXPHALIGN=self.txphalign, o_TXPHALIGNDONE=self.txphaligndone, i_TXPHALIGNEN=self.txphalignen, i_TXPHDLYPD=0, i_TXPHDLYRESET=self.txphdlyreset, i_TXPHINIT=self.txphinit, o_TXPHINITDONE=self.txphinitdone, i_TXPHOVRDEN=0, # Transmit Ports - TX Buffer Ports #o_TXBUFSTATUS=, # Transmit Ports - TX Configurable Driver Ports i_TXBUFDIFFCTRL=0b100, i_TXDEEMPH=0, i_TXDIFFCTRL=0b1000, i_TXDIFFPD=0, i_TXINHIBIT=0, i_TXMAINCURSOR=0, i_TXPISOPD=0, # Transmit Ports - TX Data Path interface i_TXDATA=self.txdata, # Transmit Ports - TX Driver and OOB signaling o_GTXTXP=pads.txp, o_GTXTXN=pads.txn, # Transmit Ports - TX Fabric Clock Output Control Ports o_TXOUTCLK=self.txoutclk, o_TXOUTCLKFABRIC=self.txoutclkfabric, o_TXOUTCLKPCS=self.txoutclkpcs, i_TXOUTCLKSEL=0b11, o_TXRATEDONE=self.txratedone, # Transmit Ports - TX Gearbox Ports i_TXCHARISK=self.txcharisk, #o_TXGEARBOXREADY=, i_TXHEADER=0, i_TXSEQUENCE=0, i_TXSTARTSEQ=0, # Transmit Ports - TX Initialization and Reset Ports i_TXPCSRESET=0, i_TXPMARESET=0, o_TXRESETDONE=self.txresetdone, # Transmit Ports - TX OOB signalling Ports o_TXCOMFINISH=self.txcomfinish, i_TXCOMINIT=self.txcominit, i_TXCOMSAS=0, i_TXCOMWAKE=self.txcomwake, i_TXPDELECIDLEMODE=0, # Transmit Ports - TX Polarity Control Ports i_TXPOLARITY=0, # Transmit Ports - TX Receiver Detection Ports i_TXDETECTRX=0, # Transmit Ports - TX8b/10b Encoder Ports i_TX8B10BBYPASS=0, # Transmit Ports - pattern Generator Ports i_TXPRBSSEL=0, # Tx Configurable Driver Ports #o_TXQPISENN=, #o_TXQPISENP= ) class SATAGTX(Module): def __init__(self, pads): self.reset = Signal() self.transceiver_reset = Signal() self.cd_sata_tx = ClockDomain() self.cd_sata_rx = ClockDomain() self.channel = GTXE2_CHANNEL(pads, "SATA_III") # TX clocking refclk = Signal() self.specials += Instance("IBUFDS_GTE2", i_I=pads.refclk_p, i_IB=pads.refclk_n, o_O=refclk ) # refclk--> BUFG-->MMCM-->BUFG-->SATA TX clock mmcm_reset = Signal() mmcm_locked = Signal() mmcm_drp = DRP() mmcm_fb = Signal() mmcm_clk_i = Signal() mmcm_clk_o = Signal() self.specials += [ Instance("BUFG", i_I=refclk, o_O=mmcm_clk_i), Instance("MMCME2_ADV", p_BANDWIDTH="HIGH", p_COMPENSATION="ZHOLD", i_RST=mmcm_reset, o_LOCKED=mmcm_locked, # DRP i_DCLK=mmcm_drp.clk, i_DEN=mmcm_drp.den, o_DRDY=mmcm_drp.rdy, i_DWE=mmcm_drp.we, i_DADDR=mmcm_drp.addr, i_DI=mmcm_drp.di, i_DO=mmcm_drp.do, # VCO p_REF_JITTER1=0.01, p_CLKIN1_PERIOD=5.0, p_CLKFBOUT_MULT_F=8.000, CLKFBOUT_PHASE=0.000, p_DIVCLK_DIVIDE=2, i_CLKIN1=mmcm_clk_i, i_CLKFBIN=mmcm_fb, o_CLKFBOUT=mmcm_fb, # CLK0 p_CLKOUT0_DIVIDE_F=4.000, p_CLKOUT0_PHASE=0.000, o_CLKOUT0=mmcm_clk_o, ), Instance("BUFG", i_I=mmcm_clk, o_O=self.cd_sata_tx.clk), ] # RX clocking self.specials += [ Instance("BUFG", i_I=self.channel.rxoutclk, o_O=self.cd_sata_rx.clk), ] self.comb += [ self.channel.RXUSRCLK.eq(self.cd_sata_rx.clk), self.channel.RXUSRCLK2.eq(self.cd_sata_rx.clk) ] # TX buffer bypass logic self.comb += [ self.txphdlyreset.eq(0), self.txphalignen.eq(0), self.txdlyen.eq(0), self.txphalign.eq(0), self.txphinit.eq(0) ] # once channel TX is reseted, reset TX buffer txbuffer_reseted = Signal() self.sync += \ If(self.channel.txresetdone, If(~txbuffer_reseted, self.channel.txdlyreset.eq(1), txbuffer_reseted.eq(1) ).Else( self.channel.txdlyreset.eq(0) ) ) # RX buffer bypass logic self.comb += [ self.channel.rxphdlyreset.eq(0), self.channel.rxdlyen.eq(0), self.channel.rxphalign.eq(0), self.channel.rxphalignen.eq(0), ] # wait till CDR is locked cdr_cnt = Signal(14, reset=0b10011100010000) cdr_locked = Signal() self.sync += \ If(cdr_cnt != 0, cdr_cnt.eq(cdr_cnt - 1) ).Else( cdr_locked.eq(1) ) # once CDR is locked and channel RX reseted, reset RX buffer rxbuffer_reseted = Signal() self.sync += \ If(cdr_locked & self.channel.rxresetdone, If(~rxbuffer_reseted, self.channel.rxdlyreset.eq(1), rxbuffer_reseted.eq(1) ).Else( self.channel.rxdlyreset.eq(0) ) ) # Reset self.comb += [ # GTXE2 self.channel.rxuserrdy.eq(self.channel.cplllock), self.channel.txuserrdy.eq(self.channel.cplllock), # TX self.channel.gttxreset.eq(self.reset | self.transceiver_reset | ~self.channel.cplllock), # RX self.channel.gtrxreset.eq(self.reset | self.transceiver_reset | ~self.channel.cplllock), # PLL self.channel.pllreset.eq(self.reset) ] # SATA TX/RX clock domains self.specials += [ AsyncResetSynchronizer(self.cd_sata_tx, ~mmcm_locked | ~self.channel.txresetdone), AsyncResetSynchronizer(self.cd_sata_rx, ~self.channel.cplllock | ~self.channel.rxphaligndone), ]