78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
/*
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* Copyright (c) 2000 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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# include "config.h"
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# include "priv.h"
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# include <stdio.h>
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# include <stdlib.h>
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# include <assert.h>
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/*
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* This function scans the netlist for all the pin assignments that
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* are fixed by a PAD attribute. Search the scopes recursively,
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* looking for signals that may have PAD attributes.
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*/
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int get_pad_bindings(ivl_scope_t net, void*x)
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{
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unsigned idx;
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int rc = ivl_scope_children(net, get_pad_bindings, 0);
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if (rc)
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return rc;
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for (idx = 0 ; idx < ivl_scope_sigs(net) ; idx += 1) {
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ivl_signal_t sig;
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const char*pad;
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int pin;
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sig = ivl_scope_sig(net, idx);
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pad = ivl_signal_attr(sig, "PAD");
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if (pad == 0)
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continue;
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pin = strtol(pad+1, 0, 10);
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if ((pin == 0) || (pin > pins)) {
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printf("%s: Invalid PAD assignment: %s\n",
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ivl_signal_name(sig), pad);
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error_count += 1;
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continue;
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}
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assert(ivl_signal_pins(sig) == 1);
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if (bind_pin[pin-1].nexus) {
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if (bind_pin[pin-1].nexus != ivl_signal_pin(sig, 0)) {
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printf("%s: Unconnected signals share pin %d\n",
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ivl_signal_name(sig), pin);
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error_count += 1;
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}
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continue;
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}
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bind_pin[pin-1].nexus = ivl_signal_pin(sig, 0);
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}
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return 0;
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}
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