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ecp5: Allow use of IDDRXN and ODDRXN type primitives on the same pin

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2020-04-03 09:53:14 +01:00
parent f09dfb028a
commit f9a76c56f7
1 changed files with 10 additions and 0 deletions
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10
ecp5/pack.cc
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@ -2038,10 +2038,20 @@ class Ecp5Packer
disconnect_port(ctx, prim, port); disconnect_port(ctx, prim, port);
}; };
bool warned_oddrx_iddrx = false;
auto set_iologic_mode = [&](CellInfo *iol, std::string mode) { auto set_iologic_mode = [&](CellInfo *iol, std::string mode) {
auto &curr_mode = iol->params[ctx->id("MODE")].str; auto &curr_mode = iol->params[ctx->id("MODE")].str;
if (curr_mode != "NONE" && mode == "IREG_OREG") if (curr_mode != "NONE" && mode == "IREG_OREG")
return; return;
if ((curr_mode == "IDDRXN" && mode == "ODDRXN") || (curr_mode == "ODDRXN" && mode == "IDDRXN")) {
if (!warned_oddrx_iddrx) {
warned_oddrx_iddrx = true;
log_warning("Use of IDDRXN and ODDRXN primitives on the same pin is unofficial and unsupported!\n");
}
curr_mode = "ODDRXN";
return;
}
if (curr_mode != "NONE" && curr_mode != "IREG_OREG" && curr_mode != mode) if (curr_mode != "NONE" && curr_mode != "IREG_OREG" && curr_mode != mode)
log_error("IOLOGIC '%s' has conflicting modes '%s' and '%s'\n", iol->name.c_str(ctx), curr_mode.c_str(), log_error("IOLOGIC '%s' has conflicting modes '%s' and '%s'\n", iol->name.c_str(ctx), curr_mode.c_str(),
mode.c_str()); mode.c_str());