prjxray/minitests/clb_ram64x1d/top.py

156 lines
4.1 KiB
Python

import random
random.seed(0)
import os
import re
def slice_xy():
'''Return (X1, X2), (Y1, Y2) from XRAY_ROI, exclusive end (for xrange)'''
# SLICE_X12Y100:SLICE_X27Y149
# Note XRAY_ROI_GRID_* is something else
m = re.match(r'SLICE_X(.*)Y(.*):SLICE_X(.*)Y(.*)', os.getenv('XRAY_ROI'))
ms = [int(m.group(i + 1)) for i in range(4)]
return ((ms[0], ms[2] + 1), (ms[1], ms[3] + 1))
CLBN = 400
SLICEX, SLICEY = slice_xy()
# 800
SLICEN = (SLICEY[1] - SLICEY[0]) * (SLICEX[1] - SLICEX[0])
print('//SLICEX: %s' % str(SLICEX))
print('//SLICEY: %s' % str(SLICEY))
print('//SLICEN: %s' % str(SLICEN))
print('//Requested CLBs: %s' % str(CLBN))
# Rearranged to sweep Y so that carry logic is easy to allocate
# XXX: careful...if odd number of Y in ROI will break carry
def gen_slicems():
'''
SLICEM at the following:
SLICE_XxY*
Where Y any value
x
Always even (ie 100, 102, 104, etc)
In our ROI
x = 6, 8, 10, 12, 14
'''
# TODO: generate this from DB
assert((12, 28) == SLICEX)
for slicex in (6, 8, 10, 12, 14):
for slicey in range(*SLICEY):
# caller may reject position if needs more room
yield ("SLICE_X%dY%d" % (slicex, slicey), (slicex, slicey))
DIN_N = CLBN * 8
DOUT_N = CLBN * 8
print('''
module top(input clk, stb, di, output do);
localparam integer DIN_N = %d;
localparam integer DOUT_N = %d;
reg [DIN_N-1:0] din;
wire [DOUT_N-1:0] dout;
reg [DIN_N-1:0] din_shr;
reg [DOUT_N-1:0] dout_shr;
always @(posedge clk) begin
din_shr <= {din_shr, di};
dout_shr <= {dout_shr, din_shr[DIN_N-1]};
if (stb) begin
din <= din_shr;
dout_shr <= dout;
end
end
assign do = dout_shr[DOUT_N-1];
roi roi (
.clk(clk),
.din(din),
.dout(dout)
);
endmodule
''' % (DIN_N, DOUT_N))
f = open('params.csv', 'w')
f.write('module,loc,n\n')
slices = gen_slicems()
print('module roi(input clk, input [%d:0] din, output [%d:0] dout);' % (DIN_N - 1, DOUT_N - 1))
for i in range(CLBN):
module = 'my_RAM64X1D_N'
try:
loc, loc_pos = next(slices)
except StopIteration:
break
n = 2
print(' %s' % module)
print(' #(.LOC("%s"), .N(%d))' % (loc, n))
print(' clb_%d (.clk(clk), .din(din[ %d +: 8]), .dout(dout[ %d +: 8]));' % (i, 8 * i, 8 * i))
f.write('%s,%s,%s\n' % (module, loc, n))
f.close()
print('''endmodule
// ---------------------------------------------------------------------
''')
print('''
module my_RAM64X1D_N (input clk, input [7:0] din, output [7:0] dout);
parameter LOC = "";
parameter N = 1;
generate
if (N >= 2) begin
(* LOC=LOC *)
RAM64X1D #(
.INIT(64'h0),
.IS_WCLK_INVERTED(1'b0)
) ramb (
.DPO(dout[1]),
.D(din[0]),
.WCLK(clk),
.WE(din[2]),
.A0(din[3]),
.A1(din[4]),
.A2(din[5]),
.A3(din[6]),
.A4(din[7]),
.A5(din[0]),
.DPRA0(din[1]),
.DPRA1(din[2]),
.DPRA2(din[3]),
.DPRA3(din[4]),
.DPRA4(din[5]),
.DPRA5(din[6]));
end
if (N >= 1) begin
(* LOC=LOC *)
RAM64X1D #(
.INIT(64'h0),
.IS_WCLK_INVERTED(1'b0)
) rama (
.DPO(dout[0]),
.D(din[0]),
.WCLK(clk),
.WE(din[2]),
.A0(din[3]),
.A1(din[4]),
.A2(din[5]),
.A3(din[6]),
.A4(din[7]),
.A5(din[0]),
.DPRA0(din[1]),
.DPRA1(din[2]),
.DPRA2(din[3]),
.DPRA3(din[4]),
.DPRA4(din[5]),
.DPRA5(din[6]));
end
endgenerate
endmodule
''')