pad: add tests for checks against blockage and allowing shifting of instances

gadfort · gadfort · commit bbe38ed5568f · 2025-11-04T19:10:16.000-05:00
Signed-off-by: Peter Gadfort &lt;gadfort@zeroasic.com&gt;
diff --git a/src/pad/test/BUILD b/src/pad/test/BUILD
@@ -29,11 +29,13 @@ COMPULSORY_TESTS = [
     "place_pad_hv",
     "place_pad_no_master",
     "place_pad_outsideofrow",
+    "place_pad_overblockage",
     "place_pad_with_bumps",
     "place_pad_wrong_master",
     "place_pads_bumps",
     "place_pads_too_many",
     "place_pads_uniform",
+    "place_pads_uniform_slip",
     "rdl_route",
     "rdl_route_45",
     "rdl_route_45_cost",
diff --git a/src/pad/test/CMakeLists.txt b/src/pad/test/CMakeLists.txt
@@ -24,11 +24,13 @@ or_integration_tests(
     place_pad_hv
     place_pad_no_master
     place_pad_outsideofrow
+    place_pad_overblockage
     place_pad_with_bumps
     place_pad_wrong_master
     place_pads_bumps
     place_pads_too_many
     place_pads_uniform
+    place_pads_uniform_slip
     rdl_route
     rdl_route_45
     rdl_route_45_cost
diff --git a/src/pad/test/place_pad_overblockage.ok b/src/pad/test/place_pad_overblockage.ok
@@ -0,0 +1,8 @@
+[INFO ODB-0227] LEF file: Nangate45/Nangate45.lef, created 22 layers, 27 vias, 135 library cells
+[INFO ODB-0227] LEF file: Nangate45_io/dummy_pads.lef, created 29 library cells
+[INFO ODB-0128] Design: soc_bsg_black_parrot
+[INFO ODB-0130]     Created 135 pins.
+[INFO ODB-0131]     Created 267 components and 2277 component-terminals.
+[INFO ODB-0133]     Created 350 nets and 390 connections.
+[ERROR PAD-0001] Unable to place IO_SOUTH_SIDE (PADCELL_SIG_H) at (2800.000um, 15.000um) - (2825.000um, 155.000um) as it overlaps with blockage at (2800.000um, 15.000um) - (2825.000um, 20.000um)
+PAD-0001
diff --git a/src/pad/test/place_pad_overblockage.tcl b/src/pad/test/place_pad_overblockage.tcl
@@ -0,0 +1,18 @@
+# Test for placing pads over placement blockages
+source "helpers.tcl"
+
+# Init chip
+read_lef Nangate45/Nangate45.lef
+read_lef Nangate45_io/dummy_pads.lef
+
+read_def Nangate45_blackparrot/floorplan.def
+
+odb::dbBlockage_create [ord::get_db_block] \
+    [ord::microns_to_dbu 2800] [ord::microns_to_dbu 10] \
+    [ord::microns_to_dbu 2900] [ord::microns_to_dbu 20]
+
+# Test place_pad
+make_io_sites -horizontal_site IOSITE -vertical_site IOSITE -corner_site IOSITE -offset 15
+
+catch { place_pad -master PADCELL_SIG_H -row IO_SOUTH -location 2800 "IO_SOUTH_SIDE" } err
+puts $err
diff --git a/src/pad/test/place_pads_uniform_slip.defok b/src/pad/test/place_pads_uniform_slip.defok
diff --git a/src/pad/test/place_pads_uniform_slip.ok b/src/pad/test/place_pads_uniform_slip.ok
@@ -0,0 +1,11 @@
+[INFO ODB-0227] LEF file: Nangate45/Nangate45.lef, created 22 layers, 27 vias, 135 library cells
+[INFO ODB-0227] LEF file: Nangate45_io/dummy_pads.lef, created 29 library cells
+[INFO ODB-0128] Design: soc_bsg_black_parrot
+[INFO ODB-0130]     Created 135 pins.
+[INFO ODB-0131]     Created 267 components and 2277 component-terminals.
+[INFO ODB-0133]     Created 350 nets and 390 connections.
+[INFO PAD-0041] Placed 60 pads in IO_EAST.
+[INFO PAD-0041] Placed 55 pads in IO_WEST.
+[INFO PAD-0041] Placed 58 pads in IO_SOUTH.
+[INFO PAD-0041] Placed 60 pads in IO_NORTH.
+No differences found.
diff --git a/src/pad/test/place_pads_uniform_slip.tcl b/src/pad/test/place_pads_uniform_slip.tcl
@@ -0,0 +1,67 @@
+# Test for placing pads using place_pads with uniform spacing with a blockage
+source "helpers.tcl"
+
+# Init chip
+read_lef Nangate45/Nangate45.lef
+read_lef Nangate45_io/dummy_pads.lef
+
+read_def Nangate45_blackparrot/floorplan.def
+
+odb::dbBlockage_create [ord::get_db_block] \
+    [ord::microns_to_dbu 2700] [ord::microns_to_dbu 10] \
+    [ord::microns_to_dbu 2750] [ord::microns_to_dbu 20]
+
+# Test place_pad
+make_io_sites -horizontal_site IOSITE -vertical_site IOSITE -corner_site IOSITE -offset 15
+
+place_pads -row IO_EAST u_ddr_dq_23_io u_ddr_dq_22_io u_ddr_dq_21_io \
+  u_vdd_4 u_vss_4 u_ddr_dq_20_io u_vzz_9 u_v18_9 u_ddr_dq_19_io \
+  u_ddr_dq_18_io u_ddr_dq_17_io u_ddr_dq_16_io u_vzz_10 u_v18_10 \
+  u_ddr_dq_31_io u_ddr_dq_30_io u_ddr_dq_29_io u_ddr_dq_28_io u_vzz_11 \
+  u_v18_11 u_ddr_dq_27_io u_vdd_5 u_vss_5 u_ddr_dq_26_io \
+  u_ddr_dq_25_io u_ddr_dq_24_io u_vzz_12 u_v18_12 u_ddr_dqs_n_3_io \
+  u_ddr_dqs_p_3_io u_ddr_dm_3_o u_bsg_tag_clk_i u_vzz_13 u_v18_13 \
+  u_bsg_tag_data_i u_bsg_tag_en_i u_ci_8_i u_vdd_6 u_vss_6 u_ci_7_i \
+  u_vzz_14 u_v18_14 u_ci_6_i u_ci_5_i u_ci_v_i u_ci_tkn_o u_vzz_15 \
+  u_v18_15 u_ci_clk_i u_ci_4_i u_ci_3_i u_ci_2_i u_vzz_16 u_v18_16 \
+  u_ci_1_i u_vdd_7 u_vss_7 u_ci_0_i u_ci2_8_o u_ci2_7_o
+
+place_pads -row IO_WEST u_vss_15 u_vdd_15 u_ddr_dq_8_io u_ddr_dq_9_io \
+  u_ddr_dq_10_io u_ddr_dq_11_io u_ddr_dq_12_io u_v18_32 u_vzz_32 \
+  u_ddr_dq_13_io u_ddr_dq_14_io u_ddr_dq_15_io u_ddr_dqs_p_0_io \
+  u_v18_31 u_vzz_31 u_ddr_dqs_n_0_io u_ddr_dm_0_o u_vss_14 u_vdd_14 \
+  u_ddr_dq_0_io u_ddr_dq_1_io u_v18_30 u_vzz_30 u_ddr_dq_2_io \
+  u_ddr_dq_3_io u_ddr_dq_4_io u_ddr_dq_5_io u_v18_29 u_vzz_29 \
+  u_ddr_dq_6_io u_ddr_dq_7_io u_bsg_tag_data_o u_vss_13 u_vdd_13 \
+  u_bsg_tag_clk_o u_v18_28 u_vzz_28 u_co2_0_o u_co2_1_o u_co2_2_o \
+  u_co2_3_o u_v18_27 u_vzz_27 u_co2_4_o u_co2_clk_o u_co2_tkn_i \
+  u_co2_v_o u_v18_26 u_vzz_26 u_vss_12 u_vdd_12 u_co2_5_o u_co2_6_o \
+  u_co2_7_o u_co2_8_o
+
+place_pads -row IO_SOUTH u_ddr_dm_1_o u_ddr_dqs_n_1_io u_vzz_0 \
+  u_ddr_dqs_p_1_io u_vss_0 u_ddr_ba_2_o u_ddr_ba_1_o u_ddr_ba_0_o \
+  u_vzz_1 u_v18_1 u_ddr_addr_15_o u_ddr_addr_14_o u_ddr_addr_13_o \
+  u_ddr_addr_12_o u_vzz_2 u_v18_2 u_ddr_addr_11_o u_ddr_addr_10_o \
+  u_vdd_1 u_vss_1 u_ddr_addr_9_o u_ddr_addr_8_o u_vzz_3 u_v18_3 \
+  u_ddr_addr_7_o u_ddr_addr_6_o u_ddr_addr_5_o u_ddr_addr_4_o u_vzz_4 \
+  u_v18_4 u_ddr_addr_3_o u_ddr_addr_2_o u_ddr_addr_1_o u_vdd_2 u_vss_2 \
+  u_ddr_addr_0_o u_vzz_5 u_v18_5 u_ddr_odt_o u_ddr_reset_n_o \
+  u_ddr_we_n_o u_ddr_cas_n_o u_vzz_6 u_v18_6 u_ddr_ras_n_o \
+  u_ddr_cs_n_o u_ddr_cke_o u_ddr_ck_n_o u_vzz_7 u_v18_7 u_vdd_3 \
+  u_vss_3 u_ddr_ck_p_o u_ddr_dqs_n_2_io u_ddr_dqs_p_2_io u_ddr_dm_2_o \
+  u_vzz_8 u_v18_8
+
+place_pads -row IO_NORTH u_v18_25 u_vzz_25 u_co_0_i u_co_1_i u_co_2_i \
+  u_vss_11 u_vdd_11 u_co_3_i u_v18_24 u_vzz_24 u_co_4_i u_co_clk_i \
+  u_co_tkn_o u_co_v_i u_v18_23 u_vzz_23 u_co_5_i u_co_6_i u_co_7_i \
+  u_co_8_i u_v18_22 u_vzz_22 u_vss_10 u_vdd_10 u_clk_A_i u_clk_B_i \
+  u_v18_21 u_clk_C_i u_vzz_21 u_clk_o u_vdd_pll u_clk_async_reset_i \
+  u_vss_pll u_misc_o u_sel_0_i u_sel_1_i u_vzz_20 u_v18_20 u_sel_2_i \
+  u_vss_9 u_vdd_9 u_core_async_reset_i u_ci2_0_o u_ci2_1_o u_v18_19 \
+  u_vzz_19 u_ci2_2_o u_ci2_3_o u_ci2_4_o u_ci2_clk_o u_v18_18 u_vzz_18 \
+  u_ci2_tkn_i u_ci2_v_o u_vss_8 u_vdd_8 u_ci2_5_o u_ci2_6_o u_v18_17 \
+  u_vzz_17
+
+set def_file [make_result_file "place_pads_uniform_slip.def"]
+write_def $def_file
+diff_files $def_file "place_pads_uniform_slip.defok"
