ecp5: Add IDDR71B support
Signed-off-by: David Shah <dave@ds0.me>
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@ -1181,6 +1181,7 @@ X(RDPNTR2)
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X(WRPNTR0)
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X(WRPNTR1)
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X(WRPNTR2)
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X(SLIP)
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X(GSR)
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18
ecp5/pack.cc
18
ecp5/pack.cc
@ -2085,10 +2085,10 @@ class Ecp5Packer
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iol->params[ctx->id("GSR")] = str_or_default(ci->params, ctx->id("GSR"), "DISABLED");
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pio->params[ctx->id("DATAMUX_ODDR")] = std::string("IOLDO");
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packed_cells.insert(cell.first);
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} else if (ci->type == ctx->id("IDDRX2F")) {
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} else if (ci->type == ctx->id("IDDRX2F") || ci->type == ctx->id("IDDR71B")) {
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CellInfo *pio = net_driven_by(ctx, ci->ports.at(ctx->id("D")).net, is_trellis_io, id_O);
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if (pio == nullptr || ci->ports.at(ctx->id("D")).net->users.size() > 1)
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log_error("IDDRX2F '%s' D input must be connected only to a top level input\n",
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log_error("%s '%s' D input must be connected only to a top level input\n", ci->type.c_str(ctx),
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ci->name.c_str(ctx));
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CellInfo *iol;
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if (pio_iologic.count(pio->name))
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@ -2104,8 +2104,20 @@ class Ecp5Packer
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replace_port(ci, ctx->id("Q1"), iol, id_RXDATA1);
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replace_port(ci, ctx->id("Q2"), iol, id_RXDATA2);
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replace_port(ci, ctx->id("Q3"), iol, id_RXDATA3);
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if (ci->type == ctx->id("IDDR71B")) {
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Loc loc =
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ctx->getBelLocation(ctx->getBelByName(ctx->id(pio->attrs.at(ctx->id("BEL")).as_string())));
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if (loc.z % 2 == 1)
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log_error("IDDR71B '%s' can only be used at 'A' or 'C' locations\n", ci->name.c_str(ctx));
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replace_port(ci, ctx->id("Q4"), iol, id_RXDATA4);
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replace_port(ci, ctx->id("Q5"), iol, id_RXDATA5);
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replace_port(ci, ctx->id("Q6"), iol, id_RXDATA6);
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replace_port(ci, ctx->id("ALIGNWD"), iol, id_SLIP);
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iol->params[ctx->id("IDDRXN.MODE")] = std::string("IDDR71");
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} else {
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iol->params[ctx->id("IDDRXN.MODE")] = std::string("IDDRX2");
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}
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iol->params[ctx->id("GSR")] = str_or_default(ci->params, ctx->id("GSR"), "DISABLED");
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iol->params[ctx->id("IDDRXN.MODE")] = std::string("IDDRX2");
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packed_cells.insert(cell.first);
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} else if (ci->type == ctx->id("OSHX2A")) {
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CellInfo *pio = net_only_drives(ctx, ci->ports.at(ctx->id("Q")).net, is_trellis_io, id_I, true);
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