* Gowin. DSP. Implement MULT12x12.
The 5A series DSP differs from previous ones. Many things have been
greatly simplified: there are only two control signals of one type per
cell (2 CLK, 2 CE and 2 RESET), and these signals are now explicitly
specified in the DSP attributes, which makes the automatic assignment
mechanism unnecessary for them.
The DSP occupies 3 cells instead of nine due to the exclusion of 4
low-bit multipliers - now there are only two 12x12. There will naturally
be clusters, but they will be simpler and consist of other primitives.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Gowin. Implement MULTADDALU12X12.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
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Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gowin: Update arch gen to use msgspec chipdb format
Apycula now uses msgspec MessagePack serialization instead of pickle
for the chipdb files. This change:
- Replaces pickle with msgspec via load_chipdb()
- Changes file extension from .pickle to .msgpack.gz
- Updates grid access patterns for new Device structure where
db.grid[y][x] returns ttyp (int) directly, use db[y, x] for Tile
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
* Update chipdb extension to .msgpack.xz
Apicula switched from gzip to lzma compression for chipdb files.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Only one bit per macro is responsible for the bit width of operands. We
add operand width tracking and do not allow different operands to be
combined in a single macro.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Gowin. Add GW5AST-138C chip.
The ability to perform P&R for the largest GW5A series chip currently
available has been added, which has its own characteristics:
- the need to invert pin function configuration signals - these
signals are not part of the design, but are nextpnr command line
keys for specifying the activation of alternative pin functions such as
I2C;
- some clock PIPs are encoded not by fuses, but by applying VCC/GND to
special inputs. This is also not part of the design and is not a
dynamic clock selection primitive - it is simply an addition to the
fuses.
- added check for DFF and SSRAM placement in upper slots - prior to
this chip, SSRAM was not supported and there was no need for this
check.
- since the chip is divided into two parts in terms of the global
clock network, a flag is introduced to indicate which part the wire
belongs to. This is only requested for clock wires.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Gowin. Fix style.
Use C++ type cast.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
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Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Gowin. BUGFIX. BSRAM SP separation.
The new SP cell must inherit the byte size - 8 or 9 bits.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Gowin. Byte Enables processing in SP.
Single Port with a data width of 32/36 is internally configured as Dual
Port with 16/18. Even and odd words are processed separately by ports A
and B.
With the advent of byte enable support, it became necessary to switch
these signals differently.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
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Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
The TLVDS_IBUF_ADC IO primitives have been implemented, which provide a
signal for ADC bus 2. These differential IO primitives also have an
additional input that allows them to be disabled, thereby providing
dynamic switching of the signal source for the ADC.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
ADC support for GW5A-25 chips has been added.
The inputs of this primitive are fixed and do not require routing,
although they can be switched dynamically.
The .CST file also specifies the pins used as signal sources for the
bus0 and bus1 ADC buses.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gatemate: handle default parameters for IO
This is probably a VHDL specific issue. In VHDL, there is no
black-box. Primitive instantiations are done using VHDL component
instantiations and the component must have been declared with all its
ports and parameters (generic). Currently the components are
translated from cells_sim.v and cells_bb.v
If a user doesn't override a parameter, the default value is used
instead. As a consequence, nextpnr can have 'UNDEFINED' for DRIVER
or SLEW parameters of CC_IOBUF. I think this is a main difference
with verilog, where unspecified parameters do not appear.
With this change, the UNPLACED value of PIN_NAME and UNDEFINED value
of DRIVE are simply ignored.
* gatemate/pack_io.cc: also handle UNDEFINED for id_SLEW
Since ctx->getArchArgs() no longer returns architecture-specific
arguments, we read the args field directly.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* gatemate: Use GATEMATE_DIE attribute to select placement die
* add DIE parameter in CCF
* add penalty delay when crossing between dies
* Add predictDelay
In the GW5A series, the primitive SemiDual Port BSRAM cannot function
when the width of any of the ports is 32/36 bits - it is necessary to
divide one block into two identical ones, each of which will be
responsible for 16 bits.
Here, we perform such a division and, in addition, ensure that the new
cells resulting from the division undergo the same packing procedure as
the original ones.
Naturally, with some reservations (the AUX attribute is responsible for
this) - in the case of SP, when service elements are added, it makes
sense to do this immediately for 32-bit SP and only then divide.
Also, SDPs are currently being corrected for cases where both ports are
‘problematic’, but it may happen that one port is 32 and the other is,
say, 1/2/4/8/16. This has been left for the future.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
In the new series of chips, the SemiDual Port primitive has one RESET
pin instead of two in previous versions - RESETA and RESETB.
Physically, the two pins are still there and both must be connected,
with RESETA being constant.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
Over time, it became clear that the special status of corner tiles is
handled in other parts of the toolchain, and in the GW5A chip series, it
began to interfere—in this series, IO can be located in the corners.
So we move the only function (creating VCC and GND) to the extra
function itself, and at the same time create a mechanism for explicitly
specifying the location of these sources in Apicula when necessary.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
* Check SER_CLK more
* Use connectPorts
* move rewire code
* Move data structures
* move placement decision for later
* cleanups
* find working layout
* clangformat
* Inverted input on ODDR
* Fix some tests
* Copy clocks for multi die
* cleanup
* reporting
* bugfix
* handle PLL special inputs
* Fix user globals
* Proper DDR per bank and cleanup
* Add extra data for die regions and create them
* Better forced_die implementation
* Copy region to newly generated cells, and update when constrained
* Update PLL error messages
* Add TODO comment
* convert nodes to pips
* add plane info for node pips
* a few multiplier router fixes
* do not need node delay
* add pip delays
* cleanup
* tried fixing clock router
* add PLL delays
* fix clock routing
* Do not use actual pip delay, determine best by number of passed pips
* optimize
* proper parameter check
* more multiplier fixes
* another mult fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* another multiplier fix
* log number of clock net users
* Revert "Do not use actual pip delay, determine best by number of passed pips"
This reverts commit c66e422dd0.
We want to guarantee minimum clock skew, so we need pip delay.
* route clocks from source to sink
* add time spent to route_clock
* weakly-bind non-global clocks
* clangformat
* remove dead code
* Require version 1.8
* change to assert
* add revisits in clock router
---------
Co-authored-by: Lofty <dan.ravensloft@gmail.com>
The GW5A series is interesting—in this particular primitive, the inputs
have been renamed from CLKx to CLKINx. Everything else remains the same,
including functionality.
As an output, we will store in the chip database which prefix the DCS
inputs have.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
PLLA-type PLLs are implemented, which are used in GW5A-25A chips.
These are six powerful PLLs, each of which can generate seven
independent frequencies.
Since these devices have an unusual configuration—their fuse bits are
located outside the main grid and therefore their Bels do not have
specific “correct” coordinates—the extra bel functions mechanism is used
to describe them. But all the complexity falls on the apicula part.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
By replacing the operation of adding the input to itself with a
specially formed LUT, we free up two PIPs.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
gatecat
YRabbit
Pepijn de Vos
Miodrag Milanovic
Patrick Urban
Lofty
tgingold
Gwenhael Goavec-Merou