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author | David Shah <davey1576@gmail.com> | 2018-09-24 15:25:37 +0100 |
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committer | David Shah <davey1576@gmail.com> | 2018-09-24 15:25:37 +0100 |
commit | 2ee86ab5a80fdc2c49c6c6e34a2c0d31ae291c63 (patch) | |
tree | 6dae031af8587633a1c7715b6e116ea3e9157fa9 /ice40/cells.cc | |
parent | d5d9fb27a66604c89b7a2746e7ca9749b62aec91 (diff) | |
download | nextpnr-2ee86ab5a80fdc2c49c6c6e34a2c0d31ae291c63.tar.gz nextpnr-2ee86ab5a80fdc2c49c6c6e34a2c0d31ae291c63.tar.bz2 nextpnr-2ee86ab5a80fdc2c49c6c6e34a2c0d31ae291c63.zip |
ice40: Tristate IO support fixes
Signed-off-by: David Shah <davey1576@gmail.com>
Diffstat (limited to 'ice40/cells.cc')
-rw-r--r-- | ice40/cells.cc | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/ice40/cells.cc b/ice40/cells.cc index e79a1fda..70b89631 100644 --- a/ice40/cells.cc +++ b/ice40/cells.cc @@ -312,7 +312,7 @@ void dff_to_lc(const Context *ctx, CellInfo *dff, CellInfo *lc, bool pass_thru_l replace_port(dff, ctx->id("Q"), lc, ctx->id("O")); } -void nxio_to_sb(Context *ctx, CellInfo *nxio, CellInfo *sbio) +void nxio_to_sb(Context *ctx, CellInfo *nxio, CellInfo *sbio, std::unordered_set<IdString> &todelete_cells) { if (nxio->type == ctx->id("$nextpnr_ibuf")) { sbio->params[ctx->id("PIN_TYPE")] = "1"; @@ -339,12 +339,16 @@ void nxio_to_sb(Context *ctx, CellInfo *nxio, CellInfo *sbio) sbio->params[ctx->id("PIN_TYPE")] = "41"; replace_port(tbuf, ctx->id("A"), sbio, ctx->id("D_OUT_0")); replace_port(tbuf, ctx->id("E"), sbio, ctx->id("OUTPUT_ENABLE")); - ctx->nets.erase(donet->name); - if (!donet->users.empty()) + + if (donet->users.size() > 1) { + for (auto user : donet->users) + log_info(" remaining tristate user: %s.%s\n", user.cell->name.c_str(ctx), user.port.c_str(ctx)); log_error("unsupported tristate IO pattern for IO buffer '%s', " "instantiate SB_IO manually to ensure correct behaviour\n", nxio->name.c_str(ctx)); - ctx->cells.erase(tbuf->name); + } + ctx->nets.erase(donet->name); + todelete_cells.insert(tbuf->name); } } |