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interchange: Add default cell connections to chipdb

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Signed-off-by: gatecat <gatecat@ds0.me>
This commit is contained in:
gatecat 2021-04-19 09:43:49 +01:00
parent 6fbefb8f13
commit 872b3aa63d
1 changed files with 24 additions and 1 deletions
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25
fpga_interchange/chipdb.h
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@ -34,7 +34,7 @@ NEXTPNR_NAMESPACE_BEGIN
* kExpectedChipInfoVersion * kExpectedChipInfoVersion
*/ */
static constexpr int32_t kExpectedChipInfoVersion = 6; static constexpr int32_t kExpectedChipInfoVersion = 7;
// Flattened site indexing. // Flattened site indexing.
// //
@ -255,6 +255,26 @@ NPNR_PACKED_STRUCT(struct PackagePOD {
RelSlice<PackagePinPOD> pins; RelSlice<PackagePinPOD> pins;
}); });
enum CellPinValue
{
// leave floating
PIN_VALUE_FLOAT = 0,
// connect to ground
PIN_VALUE_GND = 1,
// connect to vcc
PIN_VALUE_VCC = 2,
};
NPNR_PACKED_STRUCT(struct DefaultCellConnPOD {
int32_t pin_name; // constid
int32_t value; // CellPinValue
});
NPNR_PACKED_STRUCT(struct DefaultCellConnsPOD {
int32_t cell_type; // constid
RelSlice<DefaultCellConnPOD> pins;
});
NPNR_PACKED_STRUCT(struct ConstantsPOD { NPNR_PACKED_STRUCT(struct ConstantsPOD {
// Cell type and port for the GND and VCC global source. // Cell type and port for the GND and VCC global source.
int32_t gnd_cell_name; // constid int32_t gnd_cell_name; // constid
@ -280,6 +300,9 @@ NPNR_PACKED_STRUCT(struct ConstantsPOD {
// If a choice is available, which constant net should be used? // If a choice is available, which constant net should be used?
// Can be ''/0 if either constant net are equivilent. // Can be ''/0 if either constant net are equivilent.
int32_t best_constant_net; // constid int32_t best_constant_net; // constid
// Default cell pin connections
RelSlice<DefaultCellConnsPOD> default_conns;
}); });
NPNR_PACKED_STRUCT(struct ChipInfoPOD { NPNR_PACKED_STRUCT(struct ChipInfoPOD {