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| author | David Shah <davey1576@gmail.com> | 2018-07-23 18:56:46 +0200 |
|---|---|---|
| committer | David Shah <davey1576@gmail.com> | 2018-07-23 18:56:46 +0200 |
| commit | baa673f9edcd03a9a0e7be39a69e6223425edd5f (patch) | |
| tree | 3f9cd56cd95739a23b727ff82c6f0e70824943fd /ecp5/io.h | |
| parent | 7fd45c0cdf4243993f070009fbfabda8119c5587 (diff) | |
| download | nextpnr-baa673f9edcd03a9a0e7be39a69e6223425edd5f.tar.gz nextpnr-baa673f9edcd03a9a0e7be39a69e6223425edd5f.tar.bz2 nextpnr-baa673f9edcd03a9a0e7be39a69e6223425edd5f.zip | |
ecp5: Helper functions for I/O placement and checking
Signed-off-by: David Shah <davey1576@gmail.com>
Diffstat (limited to 'ecp5/io.h')
| -rw-r--r-- | ecp5/io.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/ecp5/io.h b/ecp5/io.h new file mode 100644 index 00000000..f0d941d9 --- /dev/null +++ b/ecp5/io.h @@ -0,0 +1,70 @@ +/* + * nextpnr -- Next Generation Place and Route + * + * Copyright (C) 2018 David Shah <david@symbioticeda.com> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ + +#ifndef IO_H +#define IO_H + +#include "nextpnr.h" + +NEXTPNR_NAMESPACE_BEGIN + +enum class IOVoltage +{ + VCC_3V3, + VCC_2V5, + VCC_1V8, + VCC_1V5, + VCC_1V35, + VCC_1V2 +}; + +std::string iovoltage_to_str(IOVoltage v); +IOVoltage iovoltage_from_str(const std::string &name); + +enum class IOType +{ + TYPE_NONE, +#define X(t) t, +#include "iotypes.inc" +#undef X + TYPE_UNKNOWN, +}; + +enum class IOSide +{ + LEFT, + RIGHT, + TOP, + BOTTOM, +}; + +std::string iotype_to_str(IOType type); +IOType ioType_from_str(const std::string &name); + +// IO related functions +IOVoltage get_vccio(IOType type); +bool is_strong_vccio_constraint(IOType type, PortType dir, IOSide side); +bool is_differential(IOType type); +bool is_referenced(IOType type); + +bool valid_loc_for_io(IOType type, PortType dir, IOSide side, int z); + +NEXTPNR_NAMESPACE_END + +#endif |