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Another stub delay calculation function

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Signed-off-by: David Shah <davey1576@gmail.com>
This commit is contained in:
David Shah 2018-06-20 11:53:49 +02:00
parent 1436ae21a2
commit 2a41211ce1
2 changed files with 24 additions and 5 deletions
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23
common/timing.cc
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@ -18,12 +18,27 @@
*/ */
#include "timing.h" #include "timing.h"
#include "log.h" #include <algorithm>
#include <unordered_map> #include <unordered_map>
#include <utility> #include <utility>
#include <algorithm> #include "log.h"
void assign_budget(Context *ctx, float default_clock = 12e6) NEXTPNR_NAMESPACE_BEGIN
// Follow a path, returning budget to annotate
static delay_t follow_path(Context *ctx, const PortRef &begin, int path_length,
delay_t slack)
{ {
if (ctx->getPortClock(begin.cell, begin.port) != IdString()) {
return slack / path_length;
} else {
// ...
}
} }
void assign_budget(Context *ctx, float default_clock)
{
// TODO
}
NEXTPNR_NAMESPACE_END

6
common/timing.h
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@ -22,7 +22,11 @@
#include "nextpnr.h" #include "nextpnr.h"
NEXTPNR_NAMESPACE_BEGIN
// Assign "budget" values for all user ports in the design // Assign "budget" values for all user ports in the design
void assign_budget(Context *ctx, float default_clock = 12e6); void assign_budget(Context *ctx, float default_clock = 12e6);
#endif TIMING_H NEXTPNR_NAMESPACE_END
#endif