electronics/ttl-fpga
1
0
Fork 0
Code Issues 1 Pull Requests Releases 1 Wiki Activity

Compare commits

base: electronics:0a493bdd2ad4e34e5eca559db14f05ea74e244c5
Branches Tags
electronics:sw
electronics:master
electronics:rev02
electronics:rev01
..
compare: electronics:f60d76f831908960cf4718a2bfd82dfd2924fb45
Branches Tags
electronics:master
electronics:sw
electronics:rev02
electronics:rev01

No commits in common. "0a493bdd2ad4e34e5eca559db14f05ea74e244c5" and "f60d76f831908960cf4718a2bfd82dfd2924fb45" have entirely different histories.
0a493bdd2a ... f60d76f831

2 changed files with 20 additions and 31 deletions
Show Stats Expand all files Collapse all files

43
sw/kousaten/src/fpga_cell_lut34.c
View File

@ -43,9 +43,11 @@ static int LUT_OUT_MUX[4][4] = {
{LUT_OUT_C, LUT_OUT_A, LUT_OUT_B, LUT_OUT_B_ASYNC},
{LUT_OUT_C, LUT_OUT_B_ASYNC, LUT_OUT_B, LUT_OUT_A}
};
static int LUT_OUT_BITMAP[2][2] = {
static int LUT_OUT_BITMAP[4][2] = {
{27, 23},
{25, 30}
{27, 23}, /* Shared with 0 */
{25, 30},
{25, 30}, /* Shared with 2 */
};
static int LUT_OUT_EN_N_BITMAP[4] = {
22, 26, 31, 24
@ -74,31 +76,16 @@ static int fpga_cell_lut34_lut_get_mux(int lut, char port) {
return -1;
}
static int fpga_cell_lut34_lut_get_out_mux(int lut_group, char *ports) {
static int fpga_cell_lut34_lut_get_out_mux(int lut, char port) {
int i;
int lut;
ports = ports + lut_group;
if (lut_group < 0 || lut_group > 2) {
report(LL_ERROR,
"Invalid LUT group requested.");
return -1;
}
lut = lut_group * 2;
if (port == LUT_OUT_DC || port == LUT_OUT_Z)
return 255;
for (i = 0; i < 4; ++i) {
if (ports[0] == LUT_OUT_DC ||
ports[0] == LUT_OUT_Z ||
ports[0] == LUT_OUT_MUX[lut][i]) {
if (ports[1] == LUT_OUT_DC ||
ports[1] == LUT_OUT_Z ||
ports[1] == LUT_OUT_MUX[lut + 1][i])
if (LUT_OUT_MUX[lut][i] == port)
return i;
}
}
return -1;
}
@ -151,13 +138,13 @@ static void fix_bitfields(int *bitmap, int count)
report(LL_ERROR, errmsg, ##__VA_ARGS__);\
errno = ERECONF;\
goto fail;\
}} (void)0
}}
#define BS_SET_BITS(value, nbits, mapping, errmsg, ...) \
{if (fpga_cell_bitstream_set_bits(buf, sbuf, value, nbits, mapping)) {\
report(LL_ERROR, errmsg, ##__VA_ARGS__);\
errno = ERECONF;\
goto fail;\
}} (void)0
}}
char *fpga_cell_lut34_isp_generate_bitstream(struct fpga_cell *cell)
{
@ -184,7 +171,7 @@ char *fpga_cell_lut34_isp_generate_bitstream(struct fpga_cell *cell)
for (i = 0; i < 4; ++i) {
fix_bitfields(LUT_IN_BITMAP[i], 3);
}
for (i = 0; i < 2; ++i) {
for (i = 0; i < 4; ++i) {
fix_bitfields(LUT_OUT_BITMAP[i], 2);
}
fix_bitfields(LUT_OUT_EN_N_BITMAP, 4);
@ -218,8 +205,8 @@ char *fpga_cell_lut34_isp_generate_bitstream(struct fpga_cell *cell)
}
/* LUT output sel + enable */
for (i = 0; i < 2; ++i) {
temp = fpga_cell_lut34_lut_get_out_mux(i, lut34->drive_sel);
for (i = 0; i < 4; ++i) {
temp = fpga_cell_lut34_lut_get_out_mux(i, lut34->drive_sel[i]);
if (temp < 0) {
report(LL_ERROR,
@ -229,11 +216,13 @@ char *fpga_cell_lut34_isp_generate_bitstream(struct fpga_cell *cell)
goto fail;
}
if (temp != 255) {
BS_SET_BITS(temp, 2, LUT_OUT_BITMAP[i],
"Couldn't set LUT output sel %d for output %d.", temp, i);
}
}
for (i = 0; i < 2; ++i) {
for (i = 0; i < 4; ++i) {
temp = fpga_cell_bitstream_is_set(sbuf, LUT_OUT_BITMAP[i][0]); /* At some point, we set a specific output on this MUX */
BS_SET_BIT(LUT_OUT_EN_N_BITMAP[i], !temp,
"Couldn't %s output for output %d.",

2
sw/kousaten/src/fpga_cell_lut34.h
View File

@ -46,7 +46,7 @@ struct fpga_cell_lut34 {
int led_lut_out_enable;
char lut_in_sel[4]; /* Input select */
char drive_sel[4]; /* Which signal to drive onto each fabric line */
int drive_sel[4]; /* Which signal to drive onto each fabric line */
int sync; /* Register output on rising edge of clk */
int route_en; /* Bitfield, Enable routing between {left, top} and main fabric */