| Line 38... |
Line 38... |
// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
|
// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
// for more details.
|
// for more details.
|
//
|
//
|
// You should have received a copy of the GNU General Public License along
|
// You should have received a copy of the GNU General Public License along
|
// with this program. (It's in the $(ROOT)/doc directory, run make with no
|
// with this program. (It's in the $(ROOT)/doc directory. Run make with no
|
// target there if the PDF file isn't present.) If not, see
|
// target there if the PDF file isn't present.) If not, see
|
// <http://www.gnu.org/licenses/> for a copy.
|
// <http://www.gnu.org/licenses/> for a copy.
|
//
|
//
|
// License: GPL, v3, as defined and found on www.gnu.org,
|
// License: GPL, v3, as defined and found on www.gnu.org,
|
// http://www.gnu.org/licenses/gpl.html
|
// http://www.gnu.org/licenses/gpl.html
|
| Line 148... |
Line 148... |
"\tparameter IWIDTH=%d, OWIDTH=IWIDTH+1;\n"
|
"\tparameter IWIDTH=%d, OWIDTH=IWIDTH+1;\n"
|
"\t// Parameters specific to the core that should be changed when this\n"
|
"\t// Parameters specific to the core that should be changed when this\n"
|
"\t// core is built ... Note that the minimum LGSPAN is 2. Smaller\n"
|
"\t// core is built ... Note that the minimum LGSPAN is 2. Smaller\n"
|
"\t// spans must use the fftdoubles stage.\n"
|
"\t// spans must use the fftdoubles stage.\n"
|
"\tparameter\tLGWIDTH=%d, ODD=0, INVERSE=0,SHIFT=0;\n"
|
"\tparameter\tLGWIDTH=%d, ODD=0, INVERSE=0,SHIFT=0;\n"
|
"\tinput\t i_clk, %s, i_ce, i_sync;\n"
|
"\tinput\twire i_clk, %s, i_ce, i_sync;\n"
|
"\tinput\t [(2*IWIDTH-1):0] i_data;\n"
|
"\tinput\twire [(2*IWIDTH-1):0] i_data;\n"
|
"\toutput\treg [(2*OWIDTH-1):0] o_data;\n"
|
"\toutput\treg [(2*OWIDTH-1):0] o_data;\n"
|
"\toutput\treg o_sync;\n"
|
"\toutput\treg o_sync;\n"
|
"\t\n", (dbg)?"_dbg":"",
|
"\t\n", (dbg)?"_dbg":"",
|
resetw.c_str(),
|
resetw.c_str(),
|
(dbg)?", o_dbg":"", TST_QTRSTAGE_IWIDTH,
|
(dbg)?", o_dbg":"", TST_QTRSTAGE_IWIDTH,
|
| Line 400... |
Line 400... |
|
|
fprintf(fp,
|
fprintf(fp,
|
"module\tqtrstage%s(i_clk, %s, i_ce, i_sync, i_data, o_data, o_sync%s);\n"
|
"module\tqtrstage%s(i_clk, %s, i_ce, i_sync, i_data, o_data, o_sync%s);\n"
|
"\tparameter IWIDTH=%d, OWIDTH=IWIDTH+1;\n"
|
"\tparameter IWIDTH=%d, OWIDTH=IWIDTH+1;\n"
|
"\tparameter\tLGWIDTH=%d, INVERSE=0,SHIFT=0;\n"
|
"\tparameter\tLGWIDTH=%d, INVERSE=0,SHIFT=0;\n"
|
"\tinput\t i_clk, %s, i_ce, i_sync;\n"
|
"\tinput\twire i_clk, %s, i_ce, i_sync;\n"
|
"\tinput\t [(2*IWIDTH-1):0] i_data;\n"
|
"\tinput\twire [(2*IWIDTH-1):0] i_data;\n"
|
"\toutput\treg [(2*OWIDTH-1):0] o_data;\n"
|
"\toutput\treg [(2*OWIDTH-1):0] o_data;\n"
|
"\toutput\treg o_sync;\n"
|
"\toutput\treg o_sync;\n"
|
"\t\n", (dbg)?"_dbg":"", resetw.c_str(),
|
"\t\n", (dbg)?"_dbg":"", resetw.c_str(),
|
(dbg)?", o_dbg":"", TST_QTRSTAGE_IWIDTH,
|
(dbg)?", o_dbg":"", TST_QTRSTAGE_IWIDTH,
|
TST_QTRSTAGE_LGWIDTH, resetw.c_str());
|
TST_QTRSTAGE_LGWIDTH, resetw.c_str());
|
| Line 761... |
Line 761... |
fprintf(fp, "//\n//\n`default_nettype\tnone\n//\n");
|
fprintf(fp, "//\n//\n`default_nettype\tnone\n//\n");
|
|
|
fprintf(fp,
|
fprintf(fp,
|
"module laststage(i_clk, %s, i_ce, i_sync, i_val, o_val, o_sync);\n"
|
"module laststage(i_clk, %s, i_ce, i_sync, i_val, o_val, o_sync);\n"
|
" parameter IWIDTH=16,OWIDTH=IWIDTH+1, SHIFT=0;\n"
|
" parameter IWIDTH=16,OWIDTH=IWIDTH+1, SHIFT=0;\n"
|
" input i_clk, %s, i_ce, i_sync;\n"
|
" input wire i_clk, %s, i_ce, i_sync;\n"
|
" input [(2*IWIDTH-1):0] i_val;\n"
|
" input wire [(2*IWIDTH-1):0] i_val;\n"
|
" output wire [(2*OWIDTH-1):0] o_val;\n"
|
" output wire [(2*OWIDTH-1):0] o_val;\n"
|
" output reg o_sync;\n\n",
|
" output reg o_sync;\n\n",
|
resetw.c_str(), resetw.c_str());
|
resetw.c_str(), resetw.c_str());
|
|
|
fprintf(fp,
|
fprintf(fp,
|
| Line 990... |
Line 990... |
"\t-p <nmpy> Sets the number of hardware multiplies (DSPs) to use, versus\n"
|
"\t-p <nmpy> Sets the number of hardware multiplies (DSPs) to use, versus\n"
|
"\t\tshift-add emulation. The default is not to use any hardware\n"
|
"\t\tshift-add emulation. The default is not to use any hardware\n"
|
"\t\tmultipliers.\n"
|
"\t\tmultipliers.\n"
|
"\t-r\tBuild a real-FFT at four input points per sample, rather than a\n"
|
"\t-r\tBuild a real-FFT at four input points per sample, rather than a\n"
|
"\t\tcomplex FFT. (Default is a Complex FFT.)\n"
|
"\t\tcomplex FFT. (Default is a Complex FFT.)\n"
|
|
"\t\tThis option is a place-holder. The real-FFT has not (yet) been\n"
|
|
"\t\timplemented.\n"
|
"\t-s\tSkip the final bit reversal stage. This is useful in\n"
|
"\t-s\tSkip the final bit reversal stage. This is useful in\n"
|
"\t\talgorithms that need to apply a filter without needing to do\n"
|
"\t\talgorithms that need to apply a filter without needing to do\n"
|
"\t\tbin shifting, as these algorithms can, with this option, just\n"
|
"\t\tbin shifting, as these algorithms can, with this option, just\n"
|
"\t\tmultiply by a bit reversed correlation sequence and then\n"
|
"\t\tmultiply by a bit reversed correlation sequence and then\n"
|
"\t\tinverse FFT the (still bit reversed) result. (You would need\n"
|
"\t\tinverse FFT the (still bit reversed) result. (You would need\n"
|
| Line 1020... |
Line 1022... |
nummpy=DEF_NMPY, nmpypstage=6, mpy_stages;
|
nummpy=DEF_NMPY, nmpypstage=6, mpy_stages;
|
int nbitsout, maxbitsout = -1, xtrapbits=DEF_XTRAPBITS, ckpce = 0;
|
int nbitsout, maxbitsout = -1, xtrapbits=DEF_XTRAPBITS, ckpce = 0;
|
const char *EMPTYSTR = "";
|
const char *EMPTYSTR = "";
|
bool bitreverse = true, inverse=false,
|
bool bitreverse = true, inverse=false,
|
verbose_flag = false,
|
verbose_flag = false,
|
single_clock = false,
|
single_clock = true,
|
real_fft = false,
|
real_fft = false,
|
async_reset = false;
|
async_reset = false;
|
FILE *vmain;
|
FILE *vmain;
|
std::string coredir = DEF_COREDIR, cmdline = "", hdrname = "";
|
std::string coredir = DEF_COREDIR, cmdline = "", hdrname = "";
|
ROUND_T rounding = RND_CONVERGENT;
|
ROUND_T rounding = RND_CONVERGENT;
|
| Line 1417... |
Line 1419... |
"// Arguments:\tThis file was computer generated using the following command\n"
|
"// Arguments:\tThis file was computer generated using the following command\n"
|
"//\t\tline:\n"
|
"//\t\tline:\n"
|
"//\n");
|
"//\n");
|
fprintf(vmain, "//\t\t%% %s\n", cmdline.c_str());
|
fprintf(vmain, "//\t\t%% %s\n", cmdline.c_str());
|
fprintf(vmain, "//\n");
|
fprintf(vmain, "//\n");
|
|
fprintf(vmain, "//\tThis core will use hardware accelerated multiplies (DSPs)\n"
|
|
"//\tfor %d of the %d stages\n", mpy_stages, lgval(fftsize));
|
|
fprintf(vmain, "//\n");
|
fprintf(vmain, "%s", creator);
|
fprintf(vmain, "%s", creator);
|
fprintf(vmain, "//\n");
|
fprintf(vmain, "//\n");
|
fprintf(vmain, "%s", cpyleft);
|
fprintf(vmain, "%s", cpyleft);
|
fprintf(vmain, "//\n//\n`default_nettype\tnone\n//\n");
|
fprintf(vmain, "//\n//\n`default_nettype\tnone\n//\n");
|
|
|
| Line 1439... |
Line 1444... |
} else {
|
} else {
|
fprintf(vmain, "\t\ti_left, i_right,\n");
|
fprintf(vmain, "\t\ti_left, i_right,\n");
|
fprintf(vmain, "\t\to_left, o_right, o_sync%s);\n",
|
fprintf(vmain, "\t\to_left, o_right, o_sync%s);\n",
|
(dbg)?", o_dbg":"");
|
(dbg)?", o_dbg":"");
|
}
|
}
|
fprintf(vmain, "\tparameter\tIWIDTH=%d, OWIDTH=%d, LGWIDTH=%d;\n\t//\n", nbitsin, nbitsout, lgsize);
|
fprintf(vmain,
|
|
"\t// The bit-width of the input, IWIDTH, output, OWIDTH, and the log\n"
|
|
"\t// of the FFT size. These are localparams, rather than parameters,\n"
|
|
"\t// because once the core has been generated, they can no longer be\n"
|
|
"\t// changed. (These values can be adjusted by running the core\n"
|
|
"\t// generator again.) The reason is simply that these values have\n"
|
|
"\t// been hardwired into the core at several places.\n");
|
|
fprintf(vmain, "\tlocalparam\tIWIDTH=%d, OWIDTH=%d, LGWIDTH=%d;\n\t//\n", nbitsin, nbitsout, lgsize);
|
assert(lgsize > 0);
|
assert(lgsize > 0);
|
fprintf(vmain, "\tinput\t\t\t\t\ti_clk, %s, i_ce;\n\t//\n",
|
fprintf(vmain, "\tinput\twire\t\t\t\ti_clk, %s, i_ce;\n\t//\n",
|
resetw.c_str());
|
resetw.c_str());
|
if (single_clock) {
|
if (single_clock) {
|
fprintf(vmain, "\tinput\t\t[(2*IWIDTH-1):0]\ti_sample;\n");
|
fprintf(vmain, "\tinput\twire\t[(2*IWIDTH-1):0]\ti_sample;\n");
|
fprintf(vmain, "\toutput\treg\t[(2*OWIDTH-1):0]\to_result;\n");
|
fprintf(vmain, "\toutput\treg\t[(2*OWIDTH-1):0]\to_result;\n");
|
} else {
|
} else {
|
fprintf(vmain, "\tinput\t\t[(2*IWIDTH-1):0]\ti_left, i_right;\n");
|
fprintf(vmain, "\tinput\twire\t[(2*IWIDTH-1):0]\ti_left, i_right;\n");
|
fprintf(vmain, "\toutput\treg\t[(2*OWIDTH-1):0]\to_left, o_right;\n");
|
fprintf(vmain, "\toutput\treg\t[(2*OWIDTH-1):0]\to_left, o_right;\n");
|
}
|
}
|
fprintf(vmain, "\toutput\treg\t\t\t\to_sync;\n");
|
fprintf(vmain, "\toutput\treg\t\t\t\to_sync;\n");
|
if (dbg)
|
if (dbg)
|
fprintf(vmain, "\toutput\twire\t[33:0]\t\to_dbg;\n");
|
fprintf(vmain, "\toutput\twire\t[33:0]\t\to_dbg;\n");
|
| Line 1498... |
Line 1510... |
|
|
// Last two stages are always non-multiply stages
|
// Last two stages are always non-multiply stages
|
// since the multiplies can be done by adds
|
// since the multiplies can be done by adds
|
mpystage = ((lgtmp-2) <= mpy_stages);
|
mpystage = ((lgtmp-2) <= mpy_stages);
|
|
|
|
fprintf(vmain, "\n\n");
|
if (mpystage)
|
if (mpystage)
|
fprintf(vmain, "\t// A hardware optimized FFT stage\n");
|
fprintf(vmain, "\t// A hardware optimized FFT stage\n");
|
fprintf(vmain, "\n\n");
|
|
fprintf(vmain, "\twire\t\tw_s%d;\n", fftsize);
|
fprintf(vmain, "\twire\t\tw_s%d;\n", fftsize);
|
if (single_clock) {
|
if (single_clock) {
|
fprintf(vmain, "\twire\t[%d:0]\tw_d%d;\n", 2*(obits+xtrapbits)-1, fftsize);
|
fprintf(vmain, "\twire\t[%d:0]\tw_d%d;\n", 2*(obits+xtrapbits)-1, fftsize);
|
cmem = gen_coeff_fname(EMPTYSTR, fftsize, 1, 0, inverse);
|
cmem = gen_coeff_fname(coredir.c_str(), fftsize, 1, 0, inverse);
|
cmemfp = gen_coeff_open(cmem.c_str());
|
cmemfp = gen_coeff_open(cmem.c_str());
|
gen_coeffs(cmemfp, fftsize, nbitsin+xtracbits, 1, 0, inverse);
|
gen_coeffs(cmemfp, fftsize, nbitsin+xtracbits, 1, 0, inverse);
|
fprintf(vmain, "\tfftstage%s\t#(IWIDTH,IWIDTH+%d,%d,%d,%d,0,\n\t\t\t%d, %d, \"%s\")\n\t\tstage_%d(i_clk, %s, i_ce,\n",
|
cmem = gen_coeff_fname(EMPTYSTR, fftsize, 1, 0, inverse);
|
|
fprintf(vmain, "\tfftstage%s\t#(IWIDTH,IWIDTH+%d,%d,%d,0,\n\t\t\t%d, %d, \"%s\")\n\t\tstage_%d(i_clk, %s, i_ce,\n",
|
((dbg)&&(dbgstage == fftsize))?"_dbg":"",
|
((dbg)&&(dbgstage == fftsize))?"_dbg":"",
|
xtracbits, obits+xtrapbits,
|
xtracbits, obits+xtrapbits,
|
lgsize, lgtmp-1,
|
lgtmp-1, (mpystage)?1:0,
|
(mpystage)?1:0,
|
|
ckpce, cmem.c_str(),
|
ckpce, cmem.c_str(),
|
fftsize, resetw.c_str());
|
fftsize, resetw.c_str());
|
fprintf(vmain, "\t\t\t(%s%s), i_sample, w_d%d, w_s%d%s);\n",
|
fprintf(vmain, "\t\t\t(%s%s), i_sample, w_d%d, w_s%d%s);\n",
|
(async_reset)?"":"!", resetw.c_str(),
|
(async_reset)?"":"!", resetw.c_str(),
|
fftsize, fftsize,
|
fftsize, fftsize,
|
((dbg)&&(dbgstage == fftsize))
|
((dbg)&&(dbgstage == fftsize))
|
? ", o_dbg":"");
|
? ", o_dbg":"");
|
} else {
|
} else {
|
fprintf(vmain, "\t// verilator lint_off UNUSED\n\twire\t\tw_os%d;\n\t// verilator lint_on UNUSED\n", fftsize);
|
fprintf(vmain, "\t// verilator lint_off UNUSED\n\twire\t\tw_os%d;\n\t// verilator lint_on UNUSED\n", fftsize);
|
fprintf(vmain, "\twire\t[%d:0]\tw_e%d, w_o%d;\n", 2*(obits+xtrapbits)-1, fftsize, fftsize);
|
fprintf(vmain, "\twire\t[%d:0]\tw_e%d, w_o%d;\n", 2*(obits+xtrapbits)-1, fftsize, fftsize);
|
cmem = gen_coeff_fname(EMPTYSTR, fftsize, 2, 0, inverse);
|
cmem = gen_coeff_fname(coredir.c_str(), fftsize, 2, 0, inverse);
|
cmemfp = gen_coeff_open(cmem.c_str());
|
cmemfp = gen_coeff_open(cmem.c_str());
|
gen_coeffs(cmemfp, fftsize, nbitsin+xtracbits, 2, 0, inverse);
|
gen_coeffs(cmemfp, fftsize, nbitsin+xtracbits, 2, 0, inverse);
|
fprintf(vmain, "\tfftstage%s\t#(IWIDTH,IWIDTH+%d,%d,%d,%d,0,\n\t\t\t%d, %d, \"%s\")\n\t\tstage_e%d(i_clk, %s, i_ce,\n",
|
cmem = gen_coeff_fname(EMPTYSTR, fftsize, 2, 0, inverse);
|
|
fprintf(vmain, "\tfftstage%s\t#(IWIDTH,IWIDTH+%d,%d,%d,0,\n\t\t\t%d, %d, \"%s\")\n\t\tstage_e%d(i_clk, %s, i_ce,\n",
|
((dbg)&&(dbgstage == fftsize))?"_dbg":"",
|
((dbg)&&(dbgstage == fftsize))?"_dbg":"",
|
xtracbits, obits+xtrapbits,
|
xtracbits, obits+xtrapbits,
|
lgsize, lgtmp-2,
|
lgtmp-2, (mpystage)?1:0,
|
(mpystage)?1:0,
|
|
ckpce, cmem.c_str(),
|
ckpce, cmem.c_str(),
|
fftsize, resetw.c_str());
|
fftsize, resetw.c_str());
|
fprintf(vmain, "\t\t\t(%s%s), i_left, w_e%d, w_s%d%s);\n",
|
fprintf(vmain, "\t\t\t(%s%s), i_left, w_e%d, w_s%d%s);\n",
|
(async_reset)?"":"!", resetw.c_str(),
|
(async_reset)?"":"!", resetw.c_str(),
|
fftsize, fftsize,
|
fftsize, fftsize,
|
((dbg)&&(dbgstage == fftsize))?", o_dbg":"");
|
((dbg)&&(dbgstage == fftsize))?", o_dbg":"");
|
cmem = gen_coeff_fname(EMPTYSTR, fftsize, 2, 1, inverse);
|
cmem = gen_coeff_fname(coredir.c_str(), fftsize, 2, 1, inverse);
|
cmemfp = gen_coeff_open(cmem.c_str());
|
cmemfp = gen_coeff_open(cmem.c_str());
|
gen_coeffs(cmemfp, fftsize, nbitsin+xtracbits, 2, 1, inverse);
|
gen_coeffs(cmemfp, fftsize, nbitsin+xtracbits, 2, 1, inverse);
|
fprintf(vmain, "\tfftstage\t#(IWIDTH,IWIDTH+%d,%d,%d,%d,0,\n\t\t\t%d, %d, \"%s\")\n\t\tstage_o%d(i_clk, %s, i_ce,\n",
|
cmem = gen_coeff_fname(EMPTYSTR, fftsize, 2, 1, inverse);
|
|
fprintf(vmain, "\tfftstage\t#(IWIDTH,IWIDTH+%d,%d,%d,0,\n\t\t\t%d, %d, \"%s\")\n\t\tstage_o%d(i_clk, %s, i_ce,\n",
|
xtracbits, obits+xtrapbits,
|
xtracbits, obits+xtrapbits,
|
lgsize, lgtmp-2,
|
lgtmp-2, (mpystage)?1:0,
|
(mpystage)?1:0,
|
|
ckpce, cmem.c_str(),
|
ckpce, cmem.c_str(),
|
fftsize, resetw.c_str());
|
fftsize, resetw.c_str());
|
fprintf(vmain, "\t\t\t(%s%s), i_right, w_o%d, w_os%d);\n",
|
fprintf(vmain, "\t\t\t(%s%s), i_right, w_o%d, w_os%d);\n",
|
(async_reset)?"":"!",resetw.c_str(),
|
(async_reset)?"":"!",resetw.c_str(),
|
fftsize, fftsize);
|
fftsize, fftsize);
|
| Line 1563... |
Line 1575... |
dbgname += "_dbg";
|
dbgname += "_dbg";
|
dbgname += ".v";
|
dbgname += ".v";
|
if (single_clock)
|
if (single_clock)
|
build_stage(fname.c_str(), fftsize, 1, 0, nbits, xtracbits, ckpce, async_reset, true);
|
build_stage(fname.c_str(), fftsize, 1, 0, nbits, xtracbits, ckpce, async_reset, true);
|
else
|
else
|
build_stage(fname.c_str(), fftsize/2, 2, 1, nbits, xtracbits, ckpce, async_reset, true);
|
build_stage(fname.c_str(), fftsize, 2, 1, nbits, xtracbits, ckpce, async_reset, true);
|
}
|
}
|
|
|
fname += ".v";
|
fname += ".v";
|
if (single_clock) {
|
if (single_clock) {
|
build_stage(fname.c_str(), fftsize, 1, 0,
|
build_stage(fname.c_str(), fftsize, 1, 0,
|
nbits, xtracbits, ckpce, async_reset,
|
nbits, xtracbits, ckpce, async_reset,
|
false);
|
false);
|
} else {
|
} else {
|
// All stages use the same Verilog, so we only
|
// All stages use the same Verilog, so we only
|
// need to build one
|
// need to build one
|
build_stage(fname.c_str(), fftsize/2, 2, 1,
|
build_stage(fname.c_str(), fftsize, 2, 1,
|
nbits, xtracbits, ckpce, async_reset, false);
|
nbits, xtracbits, ckpce, async_reset, false);
|
}
|
}
|
}
|
}
|
|
|
nbits = obits; // New number of input bits
|
nbits = obits; // New number of input bits
|
| Line 1602... |
Line 1614... |
tmp_size);
|
tmp_size);
|
if (single_clock) {
|
if (single_clock) {
|
fprintf(vmain,"\twire\t[%d:0]\tw_d%d;\n",
|
fprintf(vmain,"\twire\t[%d:0]\tw_d%d;\n",
|
2*(obits+xtrapbits)-1,
|
2*(obits+xtrapbits)-1,
|
tmp_size);
|
tmp_size);
|
cmem = gen_coeff_fname(EMPTYSTR, tmp_size, 1, 0, inverse);
|
cmem = gen_coeff_fname(coredir.c_str(), tmp_size, 1, 0, inverse);
|
cmemfp = gen_coeff_open(cmem.c_str());
|
cmemfp = gen_coeff_open(cmem.c_str());
|
gen_coeffs(cmemfp, tmp_size,
|
gen_coeffs(cmemfp, tmp_size,
|
nbits+xtracbits+xtrapbits, 1, 0, inverse);
|
nbits+xtracbits+xtrapbits, 1, 0, inverse);
|
fprintf(vmain, "\tfftstage%s\t#(%d,%d,%d,%d,%d,%d,\n\t\t\t%d, %d, \"%s\")\n\t\tstage_%d(i_clk, %s, i_ce,\n",
|
cmem = gen_coeff_fname(EMPTYSTR, tmp_size, 1, 0, inverse);
|
|
fprintf(vmain, "\tfftstage%s\t#(%d,%d,%d,%d,%d,\n\t\t\t%d, %d, \"%s\")\n\t\tstage_%d(i_clk, %s, i_ce,\n",
|
((dbg)&&(dbgstage==tmp_size))?"_dbg":"",
|
((dbg)&&(dbgstage==tmp_size))?"_dbg":"",
|
nbits+xtrapbits,
|
nbits+xtrapbits,
|
nbits+xtracbits+xtrapbits,
|
nbits+xtracbits+xtrapbits,
|
obits+xtrapbits,
|
obits+xtrapbits,
|
lgsize, lgtmp-1,
|
lgtmp-1, (dropbit)?0:0, (mpystage)?1:0,
|
(dropbit)?0:0, (mpystage)?1:0,
|
|
ckpce,
|
ckpce,
|
cmem.c_str(), tmp_size,
|
cmem.c_str(), tmp_size,
|
resetw.c_str());
|
resetw.c_str());
|
fprintf(vmain, "\t\t\tw_s%d, w_d%d, w_d%d, w_s%d%s);\n",
|
fprintf(vmain, "\t\t\tw_s%d, w_d%d, w_d%d, w_s%d%s);\n",
|
tmp_size<<1, tmp_size<<1,
|
tmp_size<<1, tmp_size<<1,
|
| Line 1627... |
Line 1639... |
fprintf(vmain, "\t// verilator lint_off UNUSED\n\twire\t\tw_os%d;\n\t// verilator lint_on UNUSED\n",
|
fprintf(vmain, "\t// verilator lint_off UNUSED\n\twire\t\tw_os%d;\n\t// verilator lint_on UNUSED\n",
|
tmp_size);
|
tmp_size);
|
fprintf(vmain,"\twire\t[%d:0]\tw_e%d, w_o%d;\n",
|
fprintf(vmain,"\twire\t[%d:0]\tw_e%d, w_o%d;\n",
|
2*(obits+xtrapbits)-1,
|
2*(obits+xtrapbits)-1,
|
tmp_size, tmp_size);
|
tmp_size, tmp_size);
|
cmem = gen_coeff_fname(EMPTYSTR, tmp_size, 2, 0, inverse);
|
cmem = gen_coeff_fname(coredir.c_str(), tmp_size, 2, 0, inverse);
|
cmemfp = gen_coeff_open(cmem.c_str());
|
cmemfp = gen_coeff_open(cmem.c_str());
|
gen_coeffs(cmemfp, tmp_size,
|
gen_coeffs(cmemfp, tmp_size,
|
nbits+xtracbits+xtrapbits, 2, 0, inverse);
|
nbits+xtracbits+xtrapbits, 2, 0, inverse);
|
fprintf(vmain, "\tfftstage%s\t#(%d,%d,%d,%d,%d,%d,\n\t\t\t%d, %d, \"%s\")\n\t\tstage_e%d(i_clk, %s, i_ce,\n",
|
cmem = gen_coeff_fname(EMPTYSTR, tmp_size, 2, 0, inverse);
|
|
fprintf(vmain, "\tfftstage%s\t#(%d,%d,%d,%d,%d,\n\t\t\t%d, %d, \"%s\")\n\t\tstage_e%d(i_clk, %s, i_ce,\n",
|
((dbg)&&(dbgstage==tmp_size))?"_dbg":"",
|
((dbg)&&(dbgstage==tmp_size))?"_dbg":"",
|
nbits+xtrapbits,
|
nbits+xtrapbits,
|
nbits+xtracbits+xtrapbits,
|
nbits+xtracbits+xtrapbits,
|
obits+xtrapbits,
|
obits+xtrapbits,
|
lgsize, lgtmp-2,
|
lgtmp-2, (dropbit)?0:0, (mpystage)?1:0,
|
(dropbit)?0:0, (mpystage)?1:0,
|
|
ckpce,
|
ckpce,
|
cmem.c_str(), tmp_size,
|
cmem.c_str(), tmp_size,
|
resetw.c_str());
|
resetw.c_str());
|
fprintf(vmain, "\t\t\tw_s%d, w_e%d, w_e%d, w_s%d%s);\n",
|
fprintf(vmain, "\t\t\tw_s%d, w_e%d, w_e%d, w_s%d%s);\n",
|
tmp_size<<1, tmp_size<<1,
|
tmp_size<<1, tmp_size<<1,
|
tmp_size, tmp_size,
|
tmp_size, tmp_size,
|
((dbg)&&(dbgstage == tmp_size))
|
((dbg)&&(dbgstage == tmp_size))
|
?", o_dbg":"");
|
?", o_dbg":"");
|
cmem = gen_coeff_fname(EMPTYSTR,
|
cmem = gen_coeff_fname(coredir.c_str(),
|
tmp_size, 2, 1, inverse);
|
tmp_size, 2, 1, inverse);
|
cmemfp = gen_coeff_open(cmem.c_str());
|
cmemfp = gen_coeff_open(cmem.c_str());
|
gen_coeffs(cmemfp, tmp_size,
|
gen_coeffs(cmemfp, tmp_size,
|
nbits+xtracbits+xtrapbits,
|
nbits+xtracbits+xtrapbits,
|
2, 1, inverse);
|
2, 1, inverse);
|
fprintf(vmain, "\tfftstage\t#(%d,%d,%d,%d,%d,%d,\n\t\t\t%d, %d, \"%s\")\n\t\tstage_o%d(i_clk, %s, i_ce,\n",
|
cmem = gen_coeff_fname(EMPTYSTR,
|
|
tmp_size, 2, 1, inverse);
|
|
fprintf(vmain, "\tfftstage\t#(%d,%d,%d,%d,%d,\n\t\t\t%d, %d, \"%s\")\n\t\tstage_o%d(i_clk, %s, i_ce,\n",
|
nbits+xtrapbits,
|
nbits+xtrapbits,
|
nbits+xtracbits+xtrapbits,
|
nbits+xtracbits+xtrapbits,
|
obits+xtrapbits,
|
obits+xtrapbits,
|
lgsize, lgtmp-2,
|
lgtmp-2, (dropbit)?0:0, (mpystage)?1:0,
|
(dropbit)?0:0, (mpystage)?1:0,
|
|
ckpce, cmem.c_str(), tmp_size,
|
ckpce, cmem.c_str(), tmp_size,
|
resetw.c_str());
|
resetw.c_str());
|
fprintf(vmain, "\t\t\tw_s%d, w_o%d, w_o%d, w_os%d);\n",
|
fprintf(vmain, "\t\t\tw_s%d, w_o%d, w_o%d, w_os%d);\n",
|
tmp_size<<1, tmp_size<<1,
|
tmp_size<<1, tmp_size<<1,
|
tmp_size, tmp_size);
|
tmp_size, tmp_size);
|
| Line 1724... |
Line 1737... |
2*obits-1);
|
2*obits-1);
|
} else {
|
} else {
|
fprintf(vmain, "\twire\t[%d:0]\tw_e2, w_o2;\n",
|
fprintf(vmain, "\twire\t[%d:0]\tw_e2, w_o2;\n",
|
2*obits-1);
|
2*obits-1);
|
}
|
}
|
if ((nbits+xtrapbits+1 == obits)&&(!dropbit))
|
/*
|
printf("WARNING: SCALING OFF BY A FACTOR OF TWO--should\'ve dropped a bit in the last stage.\n");
|
if ((nbits+xtrapbits+1 == obits)&&(!dropbit))
|
|
printf("Warning: Less than optimal scaling\n");
|
|
*/
|
|
|
if (single_clock) {
|
if (single_clock) {
|
fprintf(vmain, "\tlaststage\t#(%d,%d,%d)\tstage_2(i_clk, %s, i_ce,\n",
|
fprintf(vmain, "\tlaststage\t#(%d,%d,%d)\tstage_2(i_clk, %s, i_ce,\n",
|
nbits+xtrapbits, obits,(dropbit)?0:1,
|
nbits+xtrapbits, obits,(dropbit)?0:1,
|
resetw.c_str());
|
resetw.c_str());
|
