litex/lib/sata/k7satagtx.py

1014 lines
25 KiB
Python

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 GTXE2_COMMON(Module):
def __init__(self, fbdiv):
self.drp = DRP()
self.refclk0 = Signal()
self.refclk1 = Signal()
self.qplloutclk = Signal()
self.qplloutrefclk = Signal()
# fbdiv config
fbdiv_in_config = {
16 : 0b0000100000,
20 : 0b0000110000,
32 : 0b0001100000,
40 : 0b0010000000,
64 : 0b0011100000,
66 : 0b0101000000,
80 : 0b0100100000,
100 : 0b0101110000
}
fbdiv_in = fbdiv_in_config[fbdiv]
fbdiv_ratio_config = {
16 : 0b1,
20 : 0b1,
32 : 0b1,
40 : 0b1,
64 : 0b1,
66 : 0b0,
80 : 0b1,
100 : 0b1
}
fbdiv_ratio = fbdiv_ratio_config[fbdiv]
self.specials += \
Instance("GTXE2_COMMON",
# Simulation attributes
p_SIM_RESET_SPEEDUP="TRUE",
p_SIM_QPLLREFCLK_SEL=0b001,
p_SIM_VERSION="4.0",
# Common block attributes
p_BIAS_CFG=0x0000040000001000,
p_COMMON_CFG=0,
p_QPLL_CFG=0x06801c1,
p_QPLL_CLKOUT_CFG=0,
p_QPLL_COARSE_FREQ_OVRD=0b010000,
p_QPLL_COARSE_FREQ_OVRD_EN=0,
p_QPLL_CP=0b0000011111,
p_QPLL_CP_MONITOR_EN=0,
p_QPLL_DMONITOR_SEL=0,
p_QPLL_FBDIV=fbdiv_in,
p_QPLL_FBDIV_MONITOR_EN=0,
p_QPLL_FBDIV_RATIO=fb_div_ratio,
p_QPLL_INIT_CFG=0x000006,
p_QPLL_LOCK_CFG=0x21e9,
p_QPLL_LPF=0b1111,
p_QPLL_REFCLK_DIV=1,
# Common block - Dynamic Reconfiguration Port (DRP)
i_DRPADDR=self.drp.addr,
i_DRPCLK=self.drp.clk,
i_DRPDI=self.drp.di,
o_DRPDO=self.drp.do,
i_DRPEN=self.drp.en,
o_DRPRDY=self.drp.rdy,
i_DRPWE=self.drp.we,
# Common block - Ref Clock Ports
i_GTGREFCLK=0,
i_GTNORTHREFCLK0=0,
i_GTNORTHREFCLK1=0,
i_GTREFCLK0=self.refclk0,
i_GTREFCLK1=self.refclk1,
i_GTSOUTHREFCLK0=0,
i_GTSOUTHREFCLK1=0,
# Common block - QPLL Ports
#o_QPLLDMONITOR=,
#o_QPLLFBCLKLOST=,
#o_QPLLLOCK=,
i_QPLLLOCKDETCLK=0,
i_QPLLLOCKEN=1,
o_QPLLOUTCLK=self.qplloutclk,
o_QPLLOUTREFCLK=self.qplloutrefclk,
i_QPLLOUTRESET=0,
i_QPLLPD=0,
#o_QPLLREFCLKLOST=,
i_QPLLREFCLKSEL=0b001,
i_QPLLRESET=0,
i_QPLLRSVD1=0,
i_QPLLRSVD2=_ones(5),
#o_REFCLKOUTMONITOR=,
# Common block Ports
i_BGBYPASSB=1,
i_BGMONITORENB=1,
i_BGPDB=1,
i_BGRCALOVRD=0,
i_PMARSVD=0,
i_RCALENB=1
)
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")
self.common = GTXE2_COMMON(16)
# 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),
]
# refclk --> GTXE2_COMMON(QPLL)-->GTXE2_CHANNEL-->transceiver clock
self.comb += [
self.common.refclk0.eq(refclk),
self.channel.qpllclk.eq(self.common.qplloutclk),
self.channel.qpllrefclk.eq(self.common.qplloutrefclk),
]
# 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),
]