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[core] fixed the bug on build gsb when cbs are on perimeters

This commit is contained in:
tangxifan 2024-07-04 10:58:44 -07:00
parent e06b53658c
commit 550ce0c390
1 changed files with 26 additions and 6 deletions
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32
openfpga/src/annotation/annotate_rr_graph.cpp
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@ -126,7 +126,12 @@ static RRGSB build_rr_gsb(const DeviceContext& vpr_device_ctx,
switch (side) {
case TOP: /* TOP = 0 */
/* For the border, we should take special care */
/* For the border, we should take special care
* For the fabric where no cbs are on perimeter tiles (y = H - 1),
* the the border should be on the y = H - 2
* For the fabric where cbs are on perimeter tiles,
* the border should be on the y = H - 1
*/
if (gsb_coord.y() == gsb_range.y()) {
rr_gsb.clear_one_side(side_manager.get_side());
break;
@ -157,7 +162,12 @@ static RRGSB build_rr_gsb(const DeviceContext& vpr_device_ctx,
break;
case RIGHT: /* RIGHT = 1 */
/* For the border, we should take special care */
/* For the border, we should take special care
* For the fabric where no cbs are on perimeter tiles (x = W - 1),
* the the border should be on the x = W - 2
* For the fabric where cbs are on perimeter tiles,
* the border should be on the x = W - 1
*/
if (gsb_coord.x() == gsb_range.x()) {
rr_gsb.clear_one_side(side_manager.get_side());
break;
@ -189,8 +199,13 @@ static RRGSB build_rr_gsb(const DeviceContext& vpr_device_ctx,
gsb_coord.x() + 1, gsb_coord.y(), OPIN, opin_grid_side[1]);
break;
case BOTTOM: /* BOTTOM = 2*/
/* For the border, we should take special care */
if (gsb_coord.y() == 0) {
/* For the border, we should take special care
* For the fabric where no cbs are on perimeter tiles (y = 0),
* the the border should be on the y = 0
* For the fabric where cbs are on perimeter tiles,
* the border should be on the y = - 1, leading to no border
*/
if (!vpr_device_ctx.arch->perimeter_cb && gsb_coord.y() == 0) {
rr_gsb.clear_one_side(side_manager.get_side());
break;
}
@ -220,8 +235,13 @@ static RRGSB build_rr_gsb(const DeviceContext& vpr_device_ctx,
gsb_coord.y(), OPIN, opin_grid_side[1]);
break;
case LEFT: /* LEFT = 3 */
/* For the border, we should take special care */
if (gsb_coord.x() == 0) {
/* For the border, we should take special care
* For the fabric where no cbs are on perimeter tiles (x = 0),
* the the border should be on the x = 0
* For the fabric where cbs are on perimeter tiles,
* the border should be on the x = - 1, leading to no border
*/
if (!vpr_device_ctx.arch->perimeter_cb && gsb_coord.x() == 0) {
rr_gsb.clear_one_side(side_manager.get_side());
break;
}