/***********************************/ /* SPICE Modeling for VPR */ /* Xifan TANG, EPFL/LSI */ /***********************************/ #include #include #include #include #include #include #include #include /* Include vpr structs*/ #include "util.h" #include "physical_types.h" #include "vpr_types.h" #include "globals.h" #include "rr_graph_util.h" #include "rr_graph.h" #include "rr_graph2.h" #include "route_common.h" #include "vpr_utils.h" /* Include SPICE support headers*/ #include "linkedlist.h" #include "fpga_x2p_types.h" #include "fpga_x2p_utils.h" #include "fpga_x2p_backannotate_utils.h" #include "fpga_x2p_mux_utils.h" #include "fpga_x2p_pbtypes_utils.h" #include "fpga_x2p_bitstream_utils.h" #include "fpga_x2p_globals.h" /* Include Verilog support headers*/ #include "verilog_global.h" #include "verilog_utils.h" #include "verilog_routing.h" void dump_verilog_routing_chan_subckt(t_sram_orgz_info* cur_sram_orgz_info, char* verilog_dir, char* subckt_dir, int x, int y, t_rr_type chan_type, int LL_num_rr_nodes, t_rr_node* LL_rr_node, t_ivec*** LL_rr_node_indices, t_rr_indexed_data* LL_rr_indexed_data, int num_segment, t_segment_inf* segments, t_syn_verilog_opts fpga_verilog_opts) { int itrack, iseg, cost_index; char* chan_prefix = NULL; int chan_width = 0; t_rr_node** chan_rr_nodes = NULL; FILE* fp = NULL; char* fname = NULL; /* Check */ assert((!(0 > x))&&(!(x > (nx + 1)))); assert((!(0 > y))&&(!(y > (ny + 1)))); assert((CHANX == chan_type)||(CHANY == chan_type)); /* Initial chan_prefix*/ switch (chan_type) { case CHANX: /* Create file handler */ fp = verilog_create_one_subckt_file(subckt_dir, "Routing Channel - X direction ", chanx_verilog_file_name_prefix, x, y, &fname); /* Print preprocessing flags */ verilog_include_defines_preproc_file(fp, verilog_dir); /* Comment lines */ fprintf(fp, "//----- Verilog Module of Channel X [%d][%d] -----\n", x, y); break; case CHANY: /* Create file handler */ fp = verilog_create_one_subckt_file(subckt_dir, "Routing Channel - Y direction ", chany_verilog_file_name_prefix, x, y, &fname); /* Print preprocessing flags */ verilog_include_defines_preproc_file(fp, verilog_dir); /* Comment lines */ fprintf(fp, "//----- Verilog Module Channel Y [%d][%d] -----\n", x, y); break; default: vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid Channel type! Should be CHANX or CHANY.\n", __FILE__, __LINE__); exit(1); } /* Collect rr_nodes for Tracks for chanx[ix][iy] */ chan_rr_nodes = get_chan_rr_nodes(&chan_width, chan_type, x, y, LL_num_rr_nodes, LL_rr_node, LL_rr_node_indices); /* Chan subckt definition */ fprintf(fp, "module %s ( \n", gen_verilog_one_routing_channel_module_name(chan_type, x, y)); fprintf(fp, "\n"); /* dump global ports */ if (0 < dump_verilog_global_ports(fp, global_ports_head, TRUE)) { fprintf(fp, ",\n"); } /* Inputs and outputs, * Rules for CHANX: * print left-hand ports(in) first, then right-hand ports(out) * Rules for CHANX: * print bottom ports(in) first, then top ports(out) */ for (itrack = 0; itrack < chan_width; itrack++) { switch (chan_rr_nodes[itrack]->direction) { case INC_DIRECTION: fprintf(fp, " input in%d, //--- track %d input \n", itrack, itrack); break; case DEC_DIRECTION: fprintf(fp, " output out%d, //--- track %d output \n", itrack, itrack); break; case BI_DIRECTION: default: vpr_printf(TIO_MESSAGE_ERROR, "(File: %s [LINE%d]) Invalid direction of rr_node chany[%d][%d]_in/out[%d]!\n", __FILE__, __LINE__, x, y + 1, itrack); exit(1); } } for (itrack = 0; itrack < chan_width; itrack++) { switch (chan_rr_nodes[itrack]->direction) { case INC_DIRECTION: fprintf(fp, " output out%d, //--- track %d output\n", itrack, itrack); break; case DEC_DIRECTION: fprintf(fp, " input in%d, //--- track %d input \n", itrack, itrack); break; case BI_DIRECTION: default: vpr_printf(TIO_MESSAGE_ERROR, "(File: %s [LINE%d]) Invalid direction of rr_node chany[%d][%d]_in/out[%d]!\n", __FILE__, __LINE__, x, y + 1, itrack); exit(1); } } /* Middle point output for connection box inputs */ for (itrack = 0; itrack < chan_width; itrack++) { fprintf(fp, " output mid_out%d", itrack); if (itrack < (chan_width - 1)) { fprintf(fp, ","); } fprintf(fp, " // Middle output %d to logic blocks \n", itrack); } fprintf(fp, " );\n"); /* Print segments models*/ for (itrack = 0; itrack < chan_width; itrack++) { cost_index = chan_rr_nodes[itrack]->cost_index; iseg = LL_rr_indexed_data[cost_index].seg_index; /* Check */ assert((!(iseg < 0))&&(iseg < num_segment)); /* short connecting inputs and outputs: * length of metal wire and parasitics are handled by semi-custom flow */ fprintf(fp, "assign out%d = in%d; \n", itrack, itrack); fprintf(fp, "assign mid_out%d = in%d; \n", itrack, itrack); } fprintf(fp, "endmodule\n"); /* Comment lines */ switch (chan_type) { case CHANX: /* Comment lines */ fprintf(fp, "//----- END Verilog Module of Channel X [%d][%d] -----\n\n", x, y); break; case CHANY: /* Comment lines */ fprintf(fp, "//----- END Verilog Module of Channel Y [%d][%d] -----\n\n", x, y); break; default: vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid Channel type! Should be CHANX or CHANY.\n", __FILE__, __LINE__); exit(1); } /* Close file handler */ fclose(fp); /* Add fname to the linked list */ routing_verilog_subckt_file_path_head = add_one_subckt_file_name_to_llist(routing_verilog_subckt_file_path_head, fname); /* Free */ my_free(chan_rr_nodes); my_free(fname); return; } t_rr_node** verilog_get_grid_side_pin_rr_nodes(int* num_pin_rr_nodes, t_rr_type pin_type, int x, int y, int side, t_ivec*** LL_rr_node_indices) { int height, ipin, class_id, inode; t_type_ptr type = NULL; t_rr_node** ret = NULL; enum e_pin_type pin_class_type; int cur; /* Check */ assert((!(0 > x))&&(!(x > (nx + 1)))); assert((!(0 > y))&&(!(y > (ny + 1)))); type = grid[x][y].type; assert(NULL != type); /* Assign the type of PIN*/ switch (pin_type) { case IPIN: /* case SINK: */ pin_class_type = RECEIVER; /* This is the end of a route path*/ break; /*case SOURCE:*/ case OPIN: pin_class_type = DRIVER; /* This is the start of a route path */ break; /* SINK and SOURCE are hypothesis nodes */ default: vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid pin_type!\n", __FILE__, __LINE__); exit(1); } /* Output the pins on the side*/ (*num_pin_rr_nodes) = 0; height = grid[x][y].offset; for (ipin = 0; ipin < type->num_pins; ipin++) { class_id = type->pin_class[ipin]; if ((1 == type->pinloc[height][side][ipin])&&(pin_class_type == type->class_inf[class_id].type)) { (*num_pin_rr_nodes)++; } } /* Malloc */ ret = (t_rr_node**)my_malloc(sizeof(t_rr_node*)*(*num_pin_rr_nodes)); /* Fill the return array*/ cur = 0; height = grid[x][y].offset; for (ipin = 0; ipin < type->num_pins; ipin++) { class_id = type->pin_class[ipin]; if ((1 == type->pinloc[height][side][ipin])&&(pin_class_type == type->class_inf[class_id].type)) { inode = get_rr_node_index(x, y, pin_type, ipin, LL_rr_node_indices); ret[cur] = &(rr_node[inode]); cur++; } } assert(cur == (*num_pin_rr_nodes)); return ret; } void dump_verilog_grid_side_pin_with_given_index(FILE* fp, t_rr_type pin_type, int pin_index, int side, int x, int y, boolean dump_port_type) { int height; t_type_ptr type = NULL; char* verilog_port_type = NULL; /* Check the file handler*/ if (NULL == fp) { vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n", __FILE__, __LINE__); exit(1); } /* Check */ assert((!(0 > x))&&(!(x > (nx + 1)))); assert((!(0 > y))&&(!(y > (ny + 1)))); type = grid[x][y].type; assert(NULL != type); assert((!(0 > pin_index))&&(pin_index < type->num_pins)); assert((!(0 > side))&&(!(side > 3))); /* Assign the type of PIN*/ switch (pin_type) { case IPIN: /* case SINK: */ verilog_port_type = "output"; break; /* case SOURCE: */ case OPIN: verilog_port_type = "input"; break; /* SINK and SOURCE are hypothesis nodes */ default: vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid pin_type!\n", __FILE__, __LINE__); exit(1); } /* Output the pins on the side*/ height = get_grid_pin_height(x, y, pin_index); if (1 == type->pinloc[height][side][pin_index]) { /* Not sure if we need to plus a height */ /* fprintf(fp, "grid_%d__%d__pin_%d__%d__%d_ ", x, y, height, side, pin_index); */ if (TRUE == dump_port_type) { fprintf(fp, "%s ", verilog_port_type); } fprintf(fp, "%s", gen_verilog_grid_one_pin_name(x, y, height, side, pin_index, TRUE)); if (TRUE == dump_port_type) { fprintf(fp, ",\n"); } } else { vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Fail to print a grid pin (x=%d, y=%d, height=%d, side=%d, index=%d)\n", __FILE__, __LINE__, x, y, height, side, pin_index); exit(1); } return; } void dump_verilog_grid_side_pins(FILE* fp, t_rr_type pin_type, int x, int y, int side, boolean dump_port_type) { int height, ipin, class_id; t_type_ptr type = NULL; enum e_pin_type pin_class_type; char* verilog_port_type = NULL; /* Check the file handler*/ if (NULL == fp) { vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n", __FILE__, __LINE__); exit(1); } /* Check */ assert((!(0 > x))&&(!(x > (nx + 1)))); assert((!(0 > y))&&(!(y > (ny + 1)))); type = grid[x][y].type; assert(NULL != type); /* Assign the type of PIN*/ switch (pin_type) { case IPIN: /* case SINK: */ pin_class_type = RECEIVER; /* This is the end of a route path*/ verilog_port_type = "output"; break; /* case SOURCE: */ case OPIN: pin_class_type = DRIVER; /* This is the start of a route path */ verilog_port_type = "input"; break; /* SINK and SOURCE are hypothesis nodes */ default: vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid pin_type!\n", __FILE__, __LINE__); exit(1); } /* Output the pins on the side*/ for (ipin = 0; ipin < type->num_pins; ipin++) { class_id = type->pin_class[ipin]; height = get_grid_pin_height(x, y, ipin); if ((1 == type->pinloc[height][side][ipin])&&(pin_class_type == type->class_inf[class_id].type)) { if (TRUE == dump_port_type) { fprintf(fp, "%s ", verilog_port_type); } fprintf(fp, " grid_%d__%d__pin_%d__%d__%d_", x, y, height, side, ipin); if (TRUE == dump_port_type) { fprintf(fp, ",\n"); } else { fprintf(fp, ",\n"); } } } return; } /* Determine the channel coordinates in switch box subckt */ void verilog_determine_src_chan_coordinate_switch_box(t_rr_node* src_rr_node, t_rr_node* des_rr_node, int side, int switch_box_x, int switch_box_y, int* src_chan_x, int* src_chan_y, char** src_chan_port_name) { /* Check */ assert((!(0 > side))&&(side < 4)); assert((CHANX == src_rr_node->type)||(CHANY == src_rr_node->type)); assert((CHANX == des_rr_node->type)||(CHANY == des_rr_node->type)); assert((!(0 > switch_box_x))&&(!(switch_box_x > (nx + 1)))); assert((!(0 > switch_box_y))&&(!(switch_box_y > (ny + 1)))); /* Initialize*/ (*src_chan_x) = 0; (*src_chan_y) = 0; (*src_chan_port_name) = NULL; switch (side) { case 0: /*TOP*/ /* The destination rr_node only have one condition!!! */ assert((INC_DIRECTION == des_rr_node->direction)&&(CHANY == des_rr_node->type)); /* Following cases: * | * / | \ */ if ((INC_DIRECTION == src_rr_node->direction)&&(CHANY == src_rr_node->type)) { (*src_chan_x) = switch_box_x; (*src_chan_y) = switch_box_y; (*src_chan_port_name) = "in"; } else if ((INC_DIRECTION == src_rr_node->direction)&&(CHANX == src_rr_node->type)) { (*src_chan_x) = switch_box_x; (*src_chan_y) = switch_box_y; (*src_chan_port_name) = "in"; } else if ((DEC_DIRECTION == src_rr_node->direction)&&(CHANX == src_rr_node->type)) { (*src_chan_x) = switch_box_x + 1; (*src_chan_y) = switch_box_y; (*src_chan_port_name) = "in"; } else { vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid source channel!\n", __FILE__, __LINE__); exit(1); } break; case 1: /*RIGHT*/ /* The destination rr_node only have one condition!!! */ assert((INC_DIRECTION == des_rr_node->direction)&&(CHANX == des_rr_node->type)); /* Following cases: * \ * --- ---- * / */ if ((DEC_DIRECTION == src_rr_node->direction)&&(CHANY == src_rr_node->type)) { (*src_chan_x) = switch_box_x; (*src_chan_y) = switch_box_y + 1; (*src_chan_port_name) = "in"; } else if ((INC_DIRECTION == src_rr_node->direction)&&(CHANX == src_rr_node->type)) { (*src_chan_x) = switch_box_x; (*src_chan_y) = switch_box_y; (*src_chan_port_name) = "in"; } else if ((INC_DIRECTION == src_rr_node->direction)&&(CHANY == src_rr_node->type)) { (*src_chan_x) = switch_box_x; (*src_chan_y) = switch_box_y; (*src_chan_port_name) = "in"; } else { vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid source channel!\n", __FILE__, __LINE__); exit(1); } break; case 2: /*BOTTOM*/ /* The destination rr_node only have one condition!!! */ assert((DEC_DIRECTION == des_rr_node->direction)&&(CHANY == des_rr_node->type)); /* Following cases: * | * \ / * | */ if ((DEC_DIRECTION == src_rr_node->direction)&&(CHANY == src_rr_node->type)) { (*src_chan_x) = switch_box_x; (*src_chan_y) = switch_box_y + 1; (*src_chan_port_name) = "in"; } else if ((INC_DIRECTION == src_rr_node->direction)&&(CHANX == src_rr_node->type)) { (*src_chan_x) = switch_box_x; (*src_chan_y) = switch_box_y; (*src_chan_port_name) = "in"; } else if ((DEC_DIRECTION == src_rr_node->direction)&&(CHANX == src_rr_node->type)) { (*src_chan_x) = switch_box_x + 1; (*src_chan_y) = switch_box_y; (*src_chan_port_name) = "in"; } else { vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid source channel!\n", __FILE__, __LINE__); exit(1); } break; case 3: /*LEFT*/ /* The destination rr_node only have one condition!!! */ assert((DEC_DIRECTION == des_rr_node->direction)&&(CHANX == des_rr_node->type)); /* Following cases: * / * --- ---- * \ */ if ((DEC_DIRECTION == src_rr_node->direction)&&(CHANX == src_rr_node->type)) { (*src_chan_x) = switch_box_x + 1; (*src_chan_y) = switch_box_y; (*src_chan_port_name) = "in"; } else if ((INC_DIRECTION == src_rr_node->direction)&&(CHANY == src_rr_node->type)) { (*src_chan_x) = switch_box_x; (*src_chan_y) = switch_box_y; (*src_chan_port_name) = "in"; } else if ((DEC_DIRECTION == src_rr_node->direction)&&(CHANY == src_rr_node->type)) { (*src_chan_x) = switch_box_x; (*src_chan_y) = switch_box_y + 1; (*src_chan_port_name) = "in"; } else { vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid source channel!\n", __FILE__, __LINE__); exit(1); } break; default: vpr_printf(TIO_MESSAGE_ERROR,"(File:%s, [LINE%d])Invalid side!\n", __FILE__, __LINE__); exit(1); } /* Make sure the source rr_node (channel) is in the range*/ assert((!((*src_chan_x) < src_rr_node->xlow))&&(!((*src_chan_x) > src_rr_node->xhigh))); if (!((!((*src_chan_y) < src_rr_node->ylow))&&(!((*src_chan_y) > src_rr_node->yhigh)))) { assert((!((*src_chan_y) < src_rr_node->ylow))&&(!((*src_chan_y) > src_rr_node->yhigh))); } return; } void dump_verilog_switch_box_chan_port(FILE* fp, t_sb* cur_sb_info, int chan_side, t_rr_node* cur_rr_node, enum PORTS cur_rr_node_direction) { int index = -1; t_rr_type chan_rr_node_type; int chan_rr_node_x, chan_rr_node_y; /* Check the file handler*/ if (NULL == fp) { vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n", __FILE__, __LINE__); exit(1); } /* Get the index in sb_info of cur_rr_node */ index = get_rr_node_index_in_sb_info(cur_rr_node, (*cur_sb_info), chan_side, cur_rr_node_direction); /* Make sure this node is included in this sb_info */ assert((-1 != index)&&(-1 != chan_side)); get_chan_rr_node_coorindate_in_sb_info((*cur_sb_info), chan_side, &chan_rr_node_type, &chan_rr_node_x, &chan_rr_node_y); assert(cur_rr_node->type == chan_rr_node_type); fprintf(fp, "%s_%d__%d__%s_%d_ ", convert_chan_type_to_string(chan_rr_node_type), chan_rr_node_x, chan_rr_node_y, convert_chan_rr_node_direction_to_string(cur_sb_info->chan_rr_node_direction[chan_side][index]), cur_rr_node->ptc_num); return; } /* Print a short interconneciton in switch box * There are two cases should be noticed. * 1. The actual fan-in of cur_rr_node is 0. In this case, the cur_rr_node need to be short connected to itself which is on the opposite side of this switch * 2. The actual fan-in of cur_rr_node is 0. In this case, * The cur_rr_node need to connected to the drive_rr_node */ void dump_verilog_switch_box_short_interc(t_sram_orgz_info* cur_sram_orgz_info, FILE* fp, t_sb* cur_sb_info, int chan_side, t_rr_node* cur_rr_node, int actual_fan_in, t_rr_node* drive_rr_node) { int side, index; int grid_x, grid_y; char* chan_name = NULL; char* des_chan_port_name = NULL; /* Check the file handler*/ if (NULL == fp) { vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n", __FILE__, __LINE__); exit(1); } /* Check */ assert((!(0 > cur_sb_info->x))&&(!(cur_sb_info->x > (nx + 1)))); assert((!(0 > cur_sb_info->y))&&(!(cur_sb_info->y > (ny + 1)))); assert((0 == actual_fan_in)||(1 == actual_fan_in)); chan_name = convert_chan_type_to_string(cur_rr_node->type); /* Get the index in sb_info of cur_rr_node */ index = get_rr_node_index_in_sb_info(cur_rr_node, (*cur_sb_info), chan_side, OUT_PORT); des_chan_port_name = "out"; fprintf(fp, "//----- Short connection %s[%d][%d]_%s[%d] -----\n", chan_name, cur_sb_info->x, cur_sb_info->y, des_chan_port_name, cur_rr_node->ptc_num); fprintf(fp, "assign "); /* Output port */ dump_verilog_switch_box_chan_port(fp, cur_sb_info, chan_side, cur_rr_node, OUT_PORT); fprintf(fp, " = "); /* Check the driver*/ if (0 == actual_fan_in) { assert(drive_rr_node == cur_rr_node); } else { /* drive_rr_node = &(rr_node[cur_rr_node->prev_node]); */ assert(1 == rr_node_drive_switch_box(drive_rr_node, cur_rr_node, cur_sb_info->x, cur_sb_info->y, chan_side)); } switch (drive_rr_node->type) { /* case SOURCE: */ case OPIN: /* Indicate a CLB Outpin*/ /* Search all the sides of a SB, see this drive_rr_node is an INPUT of this SB */ get_rr_node_side_and_index_in_sb_info(drive_rr_node, (*cur_sb_info), IN_PORT, &side, &index); /* We need to be sure that drive_rr_node is part of the SB */ assert((-1 != index)&&(-1 != side)); /* Find grid_x and grid_y */ grid_x = drive_rr_node->xlow; grid_y = drive_rr_node->ylow; /*Plus the offset in function fprint_grid_side_pin_with_given_index */ /* Print a grid pin */ dump_verilog_grid_side_pin_with_given_index(fp, IPIN, /* this is an input of a Switch Box */ drive_rr_node->ptc_num, cur_sb_info->opin_rr_node_grid_side[side][index], grid_x, grid_y, FALSE); /* Do not dump the direction of the port! */ break; case CHANX: case CHANY: /* Should an input */ if (cur_rr_node == drive_rr_node) { /* To be strict, the input should locate on the opposite side. * Use the else part if this may change in some architecture. */ side = get_opposite_side(chan_side); index = get_rr_node_index_in_sb_info(drive_rr_node, (*cur_sb_info), side, IN_PORT); } else { get_rr_node_side_and_index_in_sb_info(drive_rr_node, (*cur_sb_info), IN_PORT, &side, &index); } /* We need to be sure that drive_rr_node is part of the SB */ assert((-1 != index)&&(-1 != side)); dump_verilog_switch_box_chan_port(fp, cur_sb_info, side, drive_rr_node, IN_PORT); break; /* SOURCE is invalid as well */ default: /* IPIN, SINK are invalid*/ vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid rr_node type! Should be [OPIN|CHANX|CHANY].\n", __FILE__, __LINE__); exit(1); } /* END */ fprintf(fp, ";\n"); return; } /* Print the SPICE netlist of multiplexer that drive this rr_node */ void dump_verilog_switch_box_mux(t_sram_orgz_info* cur_sram_orgz_info, FILE* fp, t_sb* cur_sb_info, int chan_side, t_rr_node* cur_rr_node, int mux_size, t_rr_node** drive_rr_nodes, int switch_index) { int inode, side, index, input_cnt = 0; int grid_x, grid_y; t_spice_model* verilog_model = NULL; int mux_level, path_id, cur_num_sram; int num_mux_sram_bits = 0; int* mux_sram_bits = NULL; int num_mux_conf_bits = 0; int num_mux_reserved_conf_bits = 0; int cur_bl, cur_wl; t_spice_model* mem_model = NULL; char* mem_subckt_name = NULL; /* Check the file handler*/ if (NULL == fp) { vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n", __FILE__, __LINE__); exit(1); } /* Check */ assert((!(0 > cur_sb_info->x))&&(!(cur_sb_info->x > (nx + 1)))); assert((!(0 > cur_sb_info->y))&&(!(cur_sb_info->y > (ny + 1)))); /* Check current rr_node is CHANX or CHANY*/ assert((CHANX == cur_rr_node->type)||(CHANY == cur_rr_node->type)); /* Allocate drive_rr_nodes according to the fan-in*/ assert((2 == mux_size)||(2 < mux_size)); /* Get verilog model*/ verilog_model = switch_inf[switch_index].spice_model; /* Specify the input bus */ fprintf(fp, "wire [0:%d] %s_size%d_%d_inbus;\n", mux_size - 1, verilog_model->prefix, mux_size, verilog_model->cnt); char* name_mux = (char *) my_malloc(sizeof(char)*(strlen(verilog_model->prefix) + 5 + strlen(my_itoa(mux_size)) + 1 + strlen(my_itoa(verilog_model->cnt)) + 5)); sprintf(name_mux, "/%s_size%d_%d_/in", verilog_model->prefix, mux_size, verilog_model->cnt); char* path_hierarchy = (char *) my_malloc(sizeof(char)*(strlen(gen_verilog_one_sb_instance_name(cur_sb_info)))); path_hierarchy = gen_verilog_one_sb_instance_name(cur_sb_info); cur_rr_node->name_mux = my_strcat(path_hierarchy,name_mux); /* Input ports*/ /* Connect input ports to bus */ for (inode = 0; inode < mux_size; inode++) { switch (drive_rr_nodes[inode]->type) { /* case SOURCE: */ case OPIN: /* Indicate a CLB Outpin*/ /* Search all the sides of a SB, see this drive_rr_node is an INPUT of this SB */ get_rr_node_side_and_index_in_sb_info(drive_rr_nodes[inode], (*cur_sb_info), IN_PORT, &side, &index); /* We need to be sure that drive_rr_node is part of the SB */ if (!((-1 != index)&&(-1 != side))) { assert((-1 != index)&&(-1 != side)); } /* Find grid_x and grid_y */ grid_x = drive_rr_nodes[inode]->xlow; grid_y = drive_rr_nodes[inode]->ylow; /*Plus the offset in function fprint_grid_side_pin_with_given_index */ /* Print a grid pin */ fprintf(fp, "assign %s_size%d_%d_inbus[%d] = ", verilog_model->prefix, mux_size, verilog_model->cnt, input_cnt); dump_verilog_grid_side_pin_with_given_index(fp, IPIN, drive_rr_nodes[inode]->ptc_num, cur_sb_info->opin_rr_node_grid_side[side][index], grid_x, grid_y, FALSE); fprintf(fp, ";\n"); input_cnt++; break; case CHANX: case CHANY: /* Should be an input ! */ get_rr_node_side_and_index_in_sb_info(drive_rr_nodes[inode], (*cur_sb_info), IN_PORT, &side, &index); /* We need to be sure that drive_rr_node is part of the SB */ assert((-1 != index)&&(-1 != side)); fprintf(fp, "assign %s_size%d_%d_inbus[%d] = ", verilog_model->prefix, mux_size, verilog_model->cnt, input_cnt); dump_verilog_switch_box_chan_port(fp, cur_sb_info, side, drive_rr_nodes[inode], IN_PORT); fprintf(fp, ";\n"); input_cnt++; break; default: /* IPIN, SINK are invalid*/ vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid rr_node type! Should be [OPIN|CHANX|CHANY].\n", __FILE__, __LINE__); exit(1); } } assert(input_cnt == mux_size); /* Print SRAMs that configure this MUX */ /* cur_num_sram = sram_verilog_model->cnt; */ cur_num_sram = get_sram_orgz_info_num_mem_bit(cur_sram_orgz_info); get_sram_orgz_info_num_blwl(cur_sram_orgz_info, &cur_bl, &cur_wl); /* connect to reserved BL/WLs ? */ num_mux_reserved_conf_bits = count_num_reserved_conf_bits_one_spice_model(verilog_model, cur_sram_orgz_info->type, mux_size); /* Get the number of configuration bits required by this MUX */ num_mux_conf_bits = count_num_conf_bits_one_spice_model(verilog_model, cur_sram_orgz_info->type, mux_size); /* Dump the configuration port bus */ dump_verilog_mux_config_bus(fp, verilog_model, cur_sram_orgz_info, mux_size, cur_num_sram, num_mux_reserved_conf_bits, num_mux_conf_bits); /* Dump ports visible only during formal verification */ fprintf(fp, "\n"); fprintf(fp, "`ifdef %s\n", verilog_formal_verification_preproc_flag); /* dump_verilog_formal_verification_sram_ports(fp, cur_sram_orgz_info, cur_num_sram, cur_num_sram + num_mux_conf_bits - 1, VERILOG_PORT_WIRE); fprintf(fp, ";\n"); */ dump_verilog_formal_verification_mux_sram_ports_wiring(fp, cur_sram_orgz_info, verilog_model, mux_size, cur_num_sram, cur_num_sram + num_mux_conf_bits - 1); fprintf(fp, "`endif\n"); /* Now it is the time print the SPICE netlist of MUX*/ fprintf(fp, "%s_size%d %s_size%d_%d_ (", verilog_model->prefix, mux_size, verilog_model->prefix, mux_size, verilog_model->cnt); /* Dump global ports */ if (0 < rec_dump_verilog_spice_model_global_ports(fp, verilog_model, FALSE, FALSE, FALSE)) { fprintf(fp, ",\n"); } fprintf(fp, "%s_size%d_%d_inbus, ", verilog_model->prefix, mux_size, verilog_model->cnt); /* Output port */ dump_verilog_switch_box_chan_port(fp, cur_sb_info, chan_side, cur_rr_node, OUT_PORT); /* Add a comma because dump_verilog_switch_box_chan_port does not add so */ fprintf(fp, ", "); /* Different design technology requires different configuration bus! */ dump_verilog_mux_config_bus_ports(fp, verilog_model, cur_sram_orgz_info, mux_size, cur_num_sram, num_mux_reserved_conf_bits, num_mux_conf_bits); fprintf(fp, ");\n"); /* Configuration bits for this MUX*/ path_id = DEFAULT_PATH_ID; for (inode = 0; inode < mux_size; inode++) { if (drive_rr_nodes[inode] == &(rr_node[cur_rr_node->prev_node])) { path_id = inode; cur_rr_node->id_path = inode; break; } } /* Depend on both technology and structure of this MUX*/ switch (verilog_model->design_tech) { case SPICE_MODEL_DESIGN_CMOS: decode_cmos_mux_sram_bits(verilog_model, mux_size, path_id, &num_mux_sram_bits, &mux_sram_bits, &mux_level); break; case SPICE_MODEL_DESIGN_RRAM: decode_rram_mux(verilog_model, mux_size, path_id, &num_mux_sram_bits, &mux_sram_bits, &mux_level); break; default: vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid design technology for verilog model (%s)!\n", __FILE__, __LINE__, verilog_model->name); exit(1); } /* Print the encoding in SPICE netlist for debugging */ switch (verilog_model->design_tech) { case SPICE_MODEL_DESIGN_CMOS: fprintf(fp, "//----- SRAM bits for MUX[%d], level=%d, select_path_id=%d. -----\n", verilog_model->cnt, mux_level, path_id); fprintf(fp, "//----- From LSB(LEFT) TO MSB (RIGHT) -----\n"); fprintf(fp, "//-----"); fprint_commented_sram_bits(fp, num_mux_sram_bits, mux_sram_bits); fprintf(fp, "-----\n"); break; case SPICE_MODEL_DESIGN_RRAM: fprintf(fp, "//----- BL/WL bits for 4T1R MUX[%d], level=%d, select_path_id=%d. -----\n", verilog_model->cnt, mux_level, path_id); fprintf(fp, "//----- From LSB(LEFT) TO MSB (RIGHT) -----\n"); fprintf(fp, "//---- BL: "); fprint_commented_sram_bits(fp, num_mux_sram_bits/2, mux_sram_bits); fprintf(fp, "-----\n"); fprintf(fp, "//----- From LSB(LEFT) TO MSB (RIGHT) -----\n"); fprintf(fp, "//---- WL: "); fprint_commented_sram_bits(fp, num_mux_sram_bits/2, mux_sram_bits + num_mux_sram_bits/2); fprintf(fp, "-----\n"); break; default: vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid design technology for verilog model (%s)!\n", __FILE__, __LINE__, verilog_model->name); } get_sram_orgz_info_mem_model(cur_sram_orgz_info, &mem_model); /* Dump sram modules */ switch (verilog_model->design_tech) { case SPICE_MODEL_DESIGN_CMOS: /* Call the memory module defined for this SRAM-based MUX! */ mem_subckt_name = generate_verilog_mux_subckt_name(verilog_model, mux_size, verilog_mem_posfix); fprintf(fp, "%s %s_%d_ ( ", mem_subckt_name, mem_subckt_name, verilog_model->cnt); dump_verilog_mem_sram_submodule(fp, cur_sram_orgz_info, verilog_model, mux_size, mem_model, cur_num_sram, cur_num_sram + num_mux_conf_bits - 1); fprintf(fp, ");\n"); /* update the number of memory bits */ update_sram_orgz_info_num_mem_bit(cur_sram_orgz_info, cur_num_sram + num_mux_conf_bits); break; case SPICE_MODEL_DESIGN_RRAM: /* RRAM-based MUX does not need any SRAM dumping * But we have to get the number of configuration bits required by this MUX * and update the number of memory bits */ update_sram_orgz_info_num_mem_bit(cur_sram_orgz_info, cur_num_sram + num_mux_conf_bits); update_sram_orgz_info_num_blwl(cur_sram_orgz_info, cur_bl + num_mux_conf_bits, cur_wl + num_mux_conf_bits); break; default: vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid design technology for verilog model (%s)!\n", __FILE__, __LINE__, verilog_model->name); } /* update sram counter */ verilog_model->cnt++; /* Free */ my_free(mux_sram_bits); my_free(mem_subckt_name); return; } /* Count the number of configuration bits of a rr_node*/ int count_verilog_switch_box_interc_conf_bits(t_sram_orgz_info* cur_sram_orgz_info, t_sb cur_sb_info, int chan_side, t_rr_node* cur_rr_node) { int num_conf_bits = 0; int switch_idx = 0; int num_drive_rr_nodes = 0; if (NULL == cur_rr_node) { vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])NULL cur_rr_node!\n", __FILE__, __LINE__); exit(1); return num_conf_bits; } /* Determine if the interc lies inside a channel wire, that is interc between segments */ if (1 == is_rr_node_exist_opposite_side_in_sb_info(cur_sb_info, cur_rr_node, chan_side)) { num_drive_rr_nodes = 0; } else { num_drive_rr_nodes = cur_rr_node->num_drive_rr_nodes; } /* fan_in >= 2 implies a MUX and requires configuration bits */ if (2 > num_drive_rr_nodes) { return num_conf_bits; } else { switch_idx = cur_rr_node->drive_switches[0]; assert(-1 < switch_idx); assert(SPICE_MODEL_MUX == switch_inf[switch_idx].spice_model->type); num_conf_bits = count_num_conf_bits_one_spice_model(switch_inf[switch_idx].spice_model, cur_sram_orgz_info->type, num_drive_rr_nodes); return num_conf_bits; } } /* Count the number of reserved configuration bits of a rr_node*/ int count_verilog_switch_box_interc_reserved_conf_bits(t_sram_orgz_info* cur_sram_orgz_info, t_sb cur_sb_info, int chan_side, t_rr_node* cur_rr_node) { int num_reserved_conf_bits = 0; int switch_idx = 0; int num_drive_rr_nodes = 0; if (NULL == cur_rr_node) { vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])NULL cur_rr_node!\n", __FILE__, __LINE__); exit(1); return num_reserved_conf_bits; } /* Determine if the interc lies inside a channel wire, that is interc between segments */ if (1 == is_rr_node_exist_opposite_side_in_sb_info(cur_sb_info, cur_rr_node, chan_side)) { num_drive_rr_nodes = 0; } else { num_drive_rr_nodes = cur_rr_node->num_drive_rr_nodes; } /* fan_in >= 2 implies a MUX and requires configuration bits */ if (2 > num_drive_rr_nodes) { return num_reserved_conf_bits; } else { switch_idx = cur_rr_node->drive_switches[0]; assert(-1 < switch_idx); assert(SPICE_MODEL_MUX == switch_inf[switch_idx].spice_model->type); num_reserved_conf_bits = count_num_reserved_conf_bits_one_spice_model(switch_inf[switch_idx].spice_model, cur_sram_orgz_info->type, num_drive_rr_nodes); return num_reserved_conf_bits; } } void dump_verilog_switch_box_interc(t_sram_orgz_info* cur_sram_orgz_info, FILE* fp, t_sb* cur_sb_info, int chan_side, t_rr_node* cur_rr_node) { int sb_x, sb_y; int num_drive_rr_nodes = 0; t_rr_node** drive_rr_nodes = NULL; /* Check the file handler*/ if (NULL == fp) { vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n", __FILE__, __LINE__); exit(1); } sb_x = cur_sb_info->x; sb_y = cur_sb_info->y; /* Check */ assert((!(0 > sb_x))&&(!(sb_x > (nx + 1)))); assert((!(0 > sb_y))&&(!(sb_y > (ny + 1)))); /* Determine if the interc lies inside a channel wire, that is interc between segments */ /* Check each num_drive_rr_nodes, see if they appear in the cur_sb_info */ if (TRUE == check_drive_rr_node_imply_short(*cur_sb_info, cur_rr_node, chan_side)) { /* Double check if the interc lies inside a channel wire, that is interc between segments */ assert(1 == is_rr_node_exist_opposite_side_in_sb_info(*cur_sb_info, cur_rr_node, chan_side)); num_drive_rr_nodes = 0; drive_rr_nodes = NULL; } else { num_drive_rr_nodes = cur_rr_node->num_drive_rr_nodes; drive_rr_nodes = cur_rr_node->drive_rr_nodes; } if (0 == num_drive_rr_nodes) { /* Print a special direct connection*/ dump_verilog_switch_box_short_interc(cur_sram_orgz_info, fp, cur_sb_info, chan_side, cur_rr_node, num_drive_rr_nodes, cur_rr_node); } else if (1 == num_drive_rr_nodes) { /* Print a direct connection*/ dump_verilog_switch_box_short_interc(cur_sram_orgz_info, fp, cur_sb_info, chan_side, cur_rr_node, num_drive_rr_nodes, drive_rr_nodes[DEFAULT_SWITCH_ID]); } else if (1 < num_drive_rr_nodes) { /* Print the multiplexer, fan_in >= 2 */ dump_verilog_switch_box_mux(cur_sram_orgz_info, fp, cur_sb_info, chan_side, cur_rr_node, num_drive_rr_nodes, drive_rr_nodes, cur_rr_node->drive_switches[DEFAULT_SWITCH_ID]); } /*Nothing should be done else*/ /* Free */ return; } /* Count the number of configuration bits of a Switch Box */ int count_verilog_switch_box_reserved_conf_bits(t_sram_orgz_info* cur_sram_orgz_info, t_sb* cur_sb_info) { int side, itrack; int num_reserved_conf_bits = 0; int temp_num_reserved_conf_bits = 0; for (side = 0; side < cur_sb_info->num_sides; side++) { for (itrack = 0; itrack < cur_sb_info->chan_width[side]; itrack++) { switch (cur_sb_info->chan_rr_node_direction[side][itrack]) { case OUT_PORT: temp_num_reserved_conf_bits = count_verilog_switch_box_interc_reserved_conf_bits(cur_sram_orgz_info, *cur_sb_info, side, cur_sb_info->chan_rr_node[side][itrack]); /* Always select the largest number of reserved conf_bits */ if (temp_num_reserved_conf_bits > num_reserved_conf_bits) { num_reserved_conf_bits = temp_num_reserved_conf_bits; } break; case IN_PORT: break; default: vpr_printf(TIO_MESSAGE_ERROR, "(File: %s [LINE%d]) Invalid direction of port sb[%d][%d] Channel node[%d] track[%d]!\n", __FILE__, __LINE__, cur_sb_info->x, cur_sb_info->y, side, itrack); exit(1); } } } return num_reserved_conf_bits; } /* Count the number of configuration bits of a Switch Box */ int count_verilog_switch_box_conf_bits(t_sram_orgz_info* cur_sram_orgz_info, t_sb* cur_sb_info) { int side, itrack; int num_conf_bits = 0; for (side = 0; side < cur_sb_info->num_sides; side++) { for (itrack = 0; itrack < cur_sb_info->chan_width[side]; itrack++) { switch (cur_sb_info->chan_rr_node_direction[side][itrack]) { case OUT_PORT: num_conf_bits += count_verilog_switch_box_interc_conf_bits(cur_sram_orgz_info, *cur_sb_info, side, cur_sb_info->chan_rr_node[side][itrack]); break; case IN_PORT: break; default: vpr_printf(TIO_MESSAGE_ERROR, "(File: %s [LINE%d]) Invalid direction of port sb[%d][%d] Channel node[%d] track[%d]!\n", __FILE__, __LINE__, cur_sb_info->x, cur_sb_info->y, side, itrack); exit(1); } } } return num_conf_bits; } /* Task: Print the subckt of a Switch Box. * A Switch Box subckt consists of following ports: * 1. Channel Y [x][y] inputs * 2. Channel X [x+1][y] inputs * 3. Channel Y [x][y-1] outputs * 4. Channel X [x][y] outputs * 5. Grid[x][y+1] Right side outputs pins * 6. Grid[x+1][y+1] Left side output pins * 7. Grid[x+1][y+1] Bottom side output pins * 8. Grid[x+1][y] Top side output pins * 9. Grid[x+1][y] Left side output pins * 10. Grid[x][y] Right side output pins * 11. Grid[x][y] Top side output pins * 12. Grid[x][y+1] Bottom side output pins * * -------------- -------------- * | | | | * | Grid | ChanY | Grid | * | [x][y+1] | [x][y+1] | [x+1][y+1] | * | | | | * -------------- -------------- * ---------- * ChanX | Switch | ChanX * [x][y] | Box | [x+1][y] * | [x][y] | * ---------- * -------------- -------------- * | | | | * | Grid | ChanY | Grid | * | [x][y] | [x][y] | [x+1][y] | * | | | | * -------------- -------------- */ void dump_verilog_routing_switch_box_subckt(t_sram_orgz_info* cur_sram_orgz_info, char* verilog_dir, char* subckt_dir, t_sb* cur_sb_info, int LL_num_rr_nodes, t_rr_node* LL_rr_node, t_ivec*** LL_rr_node_indices, t_syn_verilog_opts fpga_verilog_opts) { int itrack, inode, side, ix, iy, x, y; int cur_num_sram, num_conf_bits, num_reserved_conf_bits, esti_sram_cnt; FILE* fp = NULL; char* fname = NULL; /* Check */ assert((!(0 > cur_sb_info->x))&&(!(cur_sb_info->x > (nx + 1)))); assert((!(0 > cur_sb_info->y))&&(!(cur_sb_info->y > (ny + 1)))); x = cur_sb_info->x; y = cur_sb_info->y; /* Count the number of configuration bits to be consumed by this Switch block */ num_conf_bits = count_verilog_switch_box_conf_bits(cur_sram_orgz_info, cur_sb_info); /* Count the number of reserved configuration bits to be consumed by this Switch block */ num_reserved_conf_bits = count_verilog_switch_box_reserved_conf_bits(cur_sram_orgz_info, cur_sb_info); /* Estimate the sram_verilog_model->cnt */ cur_num_sram = get_sram_orgz_info_num_mem_bit(cur_sram_orgz_info); esti_sram_cnt = cur_num_sram + num_conf_bits; /* Record the index */ cur_sb_info->num_reserved_conf_bits = num_reserved_conf_bits; cur_sb_info->conf_bits_lsb = cur_num_sram; cur_sb_info->conf_bits_msb = cur_num_sram + num_conf_bits; /* Create file handler */ fp = verilog_create_one_subckt_file(subckt_dir, "Switch Block ", sb_verilog_file_name_prefix, cur_sb_info->x, cur_sb_info->y, &fname); /* Print preprocessing flags */ verilog_include_defines_preproc_file(fp, verilog_dir); /* Comment lines */ fprintf(fp, "//----- Verilog Module of Switch Box[%d][%d] -----\n", cur_sb_info->x, cur_sb_info->y); /* Print the definition of subckt*/ fprintf(fp, "module %s ( \n", gen_verilog_one_sb_module_name(cur_sb_info)); /* dump global ports */ if (0 < dump_verilog_global_ports(fp, global_ports_head, TRUE)) { fprintf(fp, ",\n"); } for (side = 0; side < cur_sb_info->num_sides; side++) { fprintf(fp, "//----- Inputs/outputs of %s side -----\n",convert_side_index_to_string(side)); determine_sb_port_coordinator((*cur_sb_info), side, &ix, &iy); for (itrack = 0; itrack < cur_sb_info->chan_width[side]; itrack++) { switch (cur_sb_info->chan_rr_node_direction[side][itrack]) { case OUT_PORT: fprintf(fp, " output %s,\n", gen_verilog_routing_channel_one_pin_name(cur_sb_info->chan_rr_node[side][itrack], ix, iy, itrack, cur_sb_info->chan_rr_node_direction[side][itrack])); break; case IN_PORT: fprintf(fp, " input %s,\n", gen_verilog_routing_channel_one_pin_name(cur_sb_info->chan_rr_node[side][itrack], ix, iy, itrack, cur_sb_info->chan_rr_node_direction[side][itrack])); break; default: vpr_printf(TIO_MESSAGE_ERROR, "(File: %s [LINE%d]) Invalid direction of chany[%d][%d]_track[%d]!\n", __FILE__, __LINE__, x, y + 1, itrack); exit(1); } } /* Dump OPINs of adjacent CLBs */ for (inode = 0; inode < cur_sb_info->num_opin_rr_nodes[side]; inode++) { fprintf(fp, " "); dump_verilog_grid_side_pin_with_given_index(fp, OPIN, /* This is an input of a SB */ cur_sb_info->opin_rr_node[side][inode]->ptc_num, cur_sb_info->opin_rr_node_grid_side[side][inode], cur_sb_info->opin_rr_node[side][inode]->xlow, cur_sb_info->opin_rr_node[side][inode]->ylow, TRUE); /* Dump the direction of the port ! */ } } /* Put down configuration port */ /* output of each configuration bit */ /* Reserved sram ports */ dump_verilog_reserved_sram_ports(fp, cur_sram_orgz_info, 0, cur_sb_info->num_reserved_conf_bits - 1, VERILOG_PORT_INPUT); if (0 < cur_sb_info->num_reserved_conf_bits) { fprintf(fp, ",\n"); } /* Normal sram ports */ dump_verilog_sram_ports(fp, cur_sram_orgz_info, cur_sb_info->conf_bits_lsb, cur_sb_info->conf_bits_msb - 1, VERILOG_PORT_INPUT); /* Dump ports only visible during formal verification*/ if (0 < (cur_sb_info->conf_bits_msb - 1 - cur_sb_info->conf_bits_lsb)) { fprintf(fp, "\n"); fprintf(fp, "`ifdef %s\n", verilog_formal_verification_preproc_flag); fprintf(fp, ",\n"); dump_verilog_formal_verification_sram_ports(fp, cur_sram_orgz_info, cur_sb_info->conf_bits_lsb, cur_sb_info->conf_bits_msb - 1, VERILOG_PORT_OUTPUT); fprintf(fp, "\n"); fprintf(fp, "`endif\n"); } fprintf(fp, "); \n"); /* Local wires for memory configurations */ dump_verilog_sram_config_bus_internal_wires(fp, cur_sram_orgz_info, cur_sb_info->conf_bits_lsb, cur_sb_info->conf_bits_msb - 1); /* Put down all the multiplexers */ for (side = 0; side < cur_sb_info->num_sides; side++) { fprintf(fp, "//----- %s side Multiplexers -----\n", convert_side_index_to_string(side)); for (itrack = 0; itrack < cur_sb_info->chan_width[side]; itrack++) { assert((CHANX == cur_sb_info->chan_rr_node[side][itrack]->type) ||(CHANY == cur_sb_info->chan_rr_node[side][itrack]->type)); /* We care INC_DIRECTION tracks at this side*/ if (OUT_PORT == cur_sb_info->chan_rr_node_direction[side][itrack]) { dump_verilog_switch_box_interc(cur_sram_orgz_info, fp, cur_sb_info, side, cur_sb_info->chan_rr_node[side][itrack]); } } } fprintf(fp, "endmodule\n"); /* Comment lines */ fprintf(fp, "//----- END Verilog Module of Switch Box[%d][%d] -----\n\n", x, y); /* Check */ assert(esti_sram_cnt == get_sram_orgz_info_num_mem_bit(cur_sram_orgz_info)); /* Close file handler */ fclose(fp); /* Add fname to the linked list */ routing_verilog_subckt_file_path_head = add_one_subckt_file_name_to_llist(routing_verilog_subckt_file_path_head, fname); /* Free chan_rr_nodes */ my_free(fname); return; } /* Count the number of configuration bits of a rr_node*/ int count_verilog_connection_box_interc_conf_bits(t_sram_orgz_info* cur_sram_orgz_info, t_rr_node* cur_rr_node) { int num_conf_bits = 0; int switch_idx = 0; int num_drive_rr_nodes = cur_rr_node->num_drive_rr_nodes; if (NULL == cur_rr_node) { vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])NULL cur_rr_node!\n", __FILE__, __LINE__); exit(1); return num_conf_bits; } /* fan_in >= 2 implies a MUX and requires configuration bits */ if (2 > num_drive_rr_nodes) { return num_conf_bits; } else { switch_idx = cur_rr_node->drive_switches[0]; assert(-1 < switch_idx); assert(SPICE_MODEL_MUX == switch_inf[switch_idx].spice_model->type); num_conf_bits = count_num_conf_bits_one_spice_model(switch_inf[switch_idx].spice_model, cur_sram_orgz_info->type, num_drive_rr_nodes); return num_conf_bits; } } /* Count the number of configuration bits of a rr_node*/ int count_verilog_connection_box_interc_reserved_conf_bits(t_sram_orgz_info* cur_sram_orgz_info, t_rr_node* cur_rr_node) { int num_reserved_conf_bits = 0; int switch_idx = 0; int num_drive_rr_nodes = cur_rr_node->num_drive_rr_nodes; if (NULL == cur_rr_node) { vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])NULL cur_rr_node!\n", __FILE__, __LINE__); exit(1); return num_reserved_conf_bits; } /* fan_in >= 2 implies a MUX and requires configuration bits */ if (2 > num_drive_rr_nodes) { return num_reserved_conf_bits; } else { switch_idx = cur_rr_node->drive_switches[0]; assert(-1 < switch_idx); assert(SPICE_MODEL_MUX == switch_inf[switch_idx].spice_model->type); num_reserved_conf_bits = count_num_reserved_conf_bits_one_spice_model(switch_inf[switch_idx].spice_model, cur_sram_orgz_info->type, num_drive_rr_nodes); return num_reserved_conf_bits; } } int count_verilog_connection_box_one_side_conf_bits(t_sram_orgz_info* cur_sram_orgz_info, int num_ipin_rr_nodes, t_rr_node** ipin_rr_node) { int num_conf_bits = 0; int inode; for (inode = 0; inode < num_ipin_rr_nodes; inode++) { num_conf_bits += count_verilog_connection_box_interc_conf_bits(cur_sram_orgz_info, ipin_rr_node[inode]); } return num_conf_bits; } int count_verilog_connection_box_one_side_reserved_conf_bits(t_sram_orgz_info* cur_sram_orgz_info, int num_ipin_rr_nodes, t_rr_node** ipin_rr_node) { int num_reserved_conf_bits = 0; int temp_num_reserved_conf_bits = 0; int inode; for (inode = 0; inode < num_ipin_rr_nodes; inode++) { temp_num_reserved_conf_bits = count_verilog_connection_box_interc_reserved_conf_bits(cur_sram_orgz_info, ipin_rr_node[inode]); if (temp_num_reserved_conf_bits > num_reserved_conf_bits) { num_reserved_conf_bits = temp_num_reserved_conf_bits; } } return num_reserved_conf_bits; } /* SRC rr_node is the IPIN of a grid.*/ void dump_verilog_connection_box_short_interc(t_sram_orgz_info* cur_sram_orgz_info, FILE* fp, t_cb* cur_cb_info, t_rr_node* src_rr_node) { t_rr_node* drive_rr_node = NULL; int iedge, check_flag; int xlow, ylow, height, side, index; /* Check the file handler*/ if (NULL == fp) { vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n", __FILE__, __LINE__); exit(1); } /* Check */ assert((!(0 > cur_cb_info->x))&&(!(cur_cb_info->x > (nx + 1)))); assert((!(0 > cur_cb_info->y))&&(!(cur_cb_info->y > (ny + 1)))); assert(1 == src_rr_node->fan_in); /* Check the driver*/ drive_rr_node = &(rr_node[src_rr_node->prev_node]); assert((CHANX == drive_rr_node->type)||(CHANY == drive_rr_node->type)); check_flag = 0; for (iedge = 0; iedge < drive_rr_node->num_edges; iedge++) { if (src_rr_node == &(rr_node[drive_rr_node->edges[iedge]])) { check_flag++; } } assert(1 == check_flag); xlow = src_rr_node->xlow; ylow = src_rr_node->ylow; height = grid[xlow][ylow].offset; /* Call the zero-resistance model */ switch(cur_cb_info->type) { case CHANX: fprintf(fp, "//----- short connection cbx[%d][%d]_grid[%d][%d]_pin[%d] -----\n", cur_cb_info->x, cur_cb_info->y, xlow, ylow + height, src_rr_node->ptc_num); break; case CHANY: fprintf(fp, "//----- short connection cby[%d][%d]_grid[%d][%d]_pin[%d] ------\n", cur_cb_info->x, cur_cb_info->y, xlow, ylow + height, src_rr_node->ptc_num); break; default: vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid type of channel!\n", __FILE__, __LINE__); exit(1); } fprintf(fp, "assign "); /* output port -- > connect to the output at middle point of a channel */ fprintf(fp, "%s_%d__%d__midout_%d_ ", convert_chan_type_to_string(drive_rr_node->type), cur_cb_info->x, cur_cb_info->y, drive_rr_node->ptc_num); fprintf(fp, "= "); /* Input port*/ assert(IPIN == src_rr_node->type); /* Search all the sides of a SB, see this drive_rr_node is an INPUT of this SB */ get_rr_node_side_and_index_in_cb_info(src_rr_node, (*cur_cb_info), OUT_PORT, &side, &index); /* We need to be sure that drive_rr_node is part of the SB */ assert((-1 != index)&&(-1 != side)); dump_verilog_grid_side_pin_with_given_index(fp, OPIN, /* This is an output of a Connection Box */ cur_cb_info->ipin_rr_node[side][index]->ptc_num, cur_cb_info->ipin_rr_node_grid_side[side][index], xlow, ylow, /* Coordinator of Grid */ FALSE); /* Do not specify the direction of this pin */ /* End */ fprintf(fp, ";\n"); return; } void dump_verilog_connection_box_mux(t_sram_orgz_info* cur_sram_orgz_info, FILE* fp, t_cb* cur_cb_info, t_rr_node* src_rr_node) { int mux_size, cur_num_sram, input_cnt = 0; t_rr_node** drive_rr_nodes = NULL; int inode, mux_level, path_id, switch_index; t_spice_model* verilog_model = NULL; int num_mux_sram_bits = 0; int* mux_sram_bits = NULL; t_rr_type drive_rr_node_type = NUM_RR_TYPES; int xlow, ylow, side, index; int num_mux_conf_bits = 0; int num_mux_reserved_conf_bits = 0; int cur_bl, cur_wl; t_spice_model* mem_model = NULL; char* mem_subckt_name = NULL; /* Check the file handler*/ if (NULL == fp) { vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n", __FILE__, __LINE__); exit(1); } /* Check */ assert((!(0 > cur_cb_info->x))&&(!(cur_cb_info->x > (nx + 1)))); assert((!(0 > cur_cb_info->y))&&(!(cur_cb_info->y > (ny + 1)))); /* Find drive_rr_nodes*/ mux_size = src_rr_node->num_drive_rr_nodes; drive_rr_nodes = src_rr_node->drive_rr_nodes; /* Configuration bits for MUX*/ path_id = DEFAULT_PATH_ID; for (inode = 0; inode < mux_size; inode++) { if (drive_rr_nodes[inode] == &(rr_node[src_rr_node->prev_node])) { path_id = inode; src_rr_node->id_path = inode; break; } } switch_index = src_rr_node->drive_switches[DEFAULT_SWITCH_ID]; verilog_model = switch_inf[switch_index].spice_model; char* name_mux = (char *) my_malloc(sizeof(char)*(strlen(verilog_model->prefix) + 5 + strlen(my_itoa(mux_size)) + 1 + strlen(my_itoa(verilog_model->cnt)) + 5)); sprintf(name_mux, "/%s_size%d_%d_/in", verilog_model->prefix, mux_size, verilog_model->cnt); char* path_hierarchy = (char *) my_malloc(sizeof(char)*(strlen(gen_verilog_one_cb_instance_name(cur_cb_info)))); path_hierarchy = gen_verilog_one_cb_instance_name(cur_cb_info); src_rr_node->name_mux = my_strcat(path_hierarchy,name_mux); /* Specify the input bus */ fprintf(fp, "wire [0:%d] %s_size%d_%d_inbus;\n", mux_size - 1, verilog_model->prefix, mux_size, verilog_model->cnt); /* Check drive_rr_nodes type, should be the same*/ for (inode = 0; inode < mux_size; inode++) { if (NUM_RR_TYPES == drive_rr_node_type) { drive_rr_node_type = drive_rr_nodes[inode]->type; } else { assert(drive_rr_node_type == drive_rr_nodes[inode]->type); assert((CHANX == drive_rr_nodes[inode]->type)||(CHANY == drive_rr_nodes[inode]->type)); } } /* input port*/ for (inode = 0; inode < mux_size; inode++) { fprintf(fp, "assign %s_size%d_%d_inbus[%d] = ", verilog_model->prefix, mux_size, verilog_model->cnt, input_cnt); fprintf(fp, "%s_%d__%d__midout_%d_;\n", convert_chan_type_to_string(drive_rr_nodes[inode]->type), cur_cb_info->x, cur_cb_info->y, drive_rr_nodes[inode]->ptc_num); input_cnt++; } assert(input_cnt == mux_size); /* Print SRAMs that configure this MUX */ /* cur_num_sram = sram_verilog_model->cnt; */ cur_num_sram = get_sram_orgz_info_num_mem_bit(cur_sram_orgz_info); get_sram_orgz_info_num_blwl(cur_sram_orgz_info, &cur_bl, &cur_wl); /* connect to reserved BL/WLs ? */ num_mux_reserved_conf_bits = count_num_reserved_conf_bits_one_spice_model(verilog_model, cur_sram_orgz_info->type, mux_size); /* Get the number of configuration bits required by this MUX */ num_mux_conf_bits = count_num_conf_bits_one_spice_model(verilog_model, cur_sram_orgz_info->type, mux_size); /* Dump the configuration port bus */ dump_verilog_mux_config_bus(fp, verilog_model, cur_sram_orgz_info, mux_size, cur_num_sram, num_mux_reserved_conf_bits, num_mux_conf_bits); /* Dump ports visible only during formal verification */ fprintf(fp, "`ifdef %s\n", verilog_formal_verification_preproc_flag); /* dump_verilog_formal_verification_sram_ports(fp, cur_sram_orgz_info, cur_num_sram, cur_num_sram + num_mux_conf_bits - 1, VERILOG_PORT_WIRE); fprintf(fp, ";\n"); */ dump_verilog_formal_verification_mux_sram_ports_wiring(fp, cur_sram_orgz_info, verilog_model, mux_size, cur_num_sram, cur_num_sram + num_mux_conf_bits - 1); fprintf(fp, "`endif\n"); /* Call the MUX SPICE model */ fprintf(fp, "%s_size%d %s_size%d_%d_ (", verilog_model->name, mux_size, verilog_model->prefix, mux_size, verilog_model->cnt); /* Dump global ports */ if (0 < rec_dump_verilog_spice_model_global_ports(fp, verilog_model, FALSE, FALSE, FALSE)) { fprintf(fp, ",\n"); } /* connect to input bus*/ fprintf(fp, "%s_size%d_%d_inbus,", verilog_model->prefix, mux_size, verilog_model->cnt); /* output port*/ xlow = src_rr_node->xlow; ylow = src_rr_node->ylow; assert(IPIN == src_rr_node->type); /* Search all the sides of a CB, see this drive_rr_node is an INPUT of this SB */ get_rr_node_side_and_index_in_cb_info(src_rr_node, (*cur_cb_info), OUT_PORT, &side, &index); /* We need to be sure that drive_rr_node is part of the CB */ assert((-1 != index)&&(-1 != side)); dump_verilog_grid_side_pin_with_given_index(fp, OPIN, /* This is an output of a connection box */ cur_cb_info->ipin_rr_node[side][index]->ptc_num, cur_cb_info->ipin_rr_node_grid_side[side][index], xlow, ylow, /* Coordinator of Grid */ FALSE); /* Do not specify the direction of port */ fprintf(fp, ", "); /* Different design technology requires different configuration bus! */ dump_verilog_mux_config_bus_ports(fp, verilog_model, cur_sram_orgz_info, mux_size, cur_num_sram, num_mux_reserved_conf_bits, num_mux_conf_bits); fprintf(fp, ");\n"); switch (verilog_model->design_tech) { case SPICE_MODEL_DESIGN_CMOS: decode_cmos_mux_sram_bits(verilog_model, mux_size, path_id, &num_mux_sram_bits, &mux_sram_bits, &mux_level); break; case SPICE_MODEL_DESIGN_RRAM: decode_rram_mux(verilog_model, mux_size, path_id, &num_mux_sram_bits, &mux_sram_bits, &mux_level); break; default: vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid design technology for verilog model (%s)!\n", __FILE__, __LINE__, verilog_model->name); } /* Print the encoding in SPICE netlist for debugging */ switch (verilog_model->design_tech) { case SPICE_MODEL_DESIGN_CMOS: fprintf(fp, "//----- SRAM bits for MUX[%d], level=%d, select_path_id=%d. -----\n", verilog_model->cnt, mux_level, path_id); fprintf(fp, "//----- From LSB(LEFT) TO MSB (RIGHT) -----\n"); fprintf(fp, "//-----"); fprint_commented_sram_bits(fp, num_mux_sram_bits, mux_sram_bits); fprintf(fp, "-----\n"); break; case SPICE_MODEL_DESIGN_RRAM: fprintf(fp, "//----- BL/WL bits for 4T1R MUX[%d], level=%d, select_path_id=%d. -----\n", verilog_model->cnt, mux_level, path_id); fprintf(fp, "//----- From LSB(LEFT) TO MSB (RIGHT) -----\n"); fprintf(fp, "//---- BL: "); fprint_commented_sram_bits(fp, num_mux_sram_bits/2, mux_sram_bits); fprintf(fp, "-----\n"); fprintf(fp, "//----- From LSB(LEFT) TO MSB (RIGHT) -----\n"); fprintf(fp, "//---- WL: "); fprint_commented_sram_bits(fp, num_mux_sram_bits/2, mux_sram_bits + num_mux_sram_bits/2); fprintf(fp, "-----\n"); break; default: vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid design technology for verilog model (%s)!\n", __FILE__, __LINE__, verilog_model->name); } get_sram_orgz_info_mem_model(cur_sram_orgz_info, &mem_model); /* Dump sram modules */ switch (verilog_model->design_tech) { case SPICE_MODEL_DESIGN_CMOS: /* Call the memory module defined for this SRAM-based MUX! */ mem_subckt_name = generate_verilog_mux_subckt_name(verilog_model, mux_size, verilog_mem_posfix); fprintf(fp, "%s %s_%d_ ( ", mem_subckt_name, mem_subckt_name, verilog_model->cnt); dump_verilog_mem_sram_submodule(fp, cur_sram_orgz_info, verilog_model, mux_size, mem_model, cur_num_sram, cur_num_sram + num_mux_conf_bits - 1); fprintf(fp, ");\n"); /* update the number of memory bits */ update_sram_orgz_info_num_mem_bit(cur_sram_orgz_info, cur_num_sram + num_mux_conf_bits); break; case SPICE_MODEL_DESIGN_RRAM: /* RRAM-based MUX does not need any SRAM dumping * But we have to get the number of configuration bits required by this MUX * and update the number of memory bits */ update_sram_orgz_info_num_mem_bit(cur_sram_orgz_info, cur_num_sram + num_mux_conf_bits); update_sram_orgz_info_num_blwl(cur_sram_orgz_info, cur_bl + num_mux_conf_bits, cur_wl + num_mux_conf_bits); break; default: vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid design technology for verilog model (%s)!\n", __FILE__, __LINE__, verilog_model->name); } /* update sram counter */ verilog_model->cnt++; /* Free */ my_free(mux_sram_bits); my_free(mem_subckt_name); return; } void dump_verilog_connection_box_interc(t_sram_orgz_info* cur_sram_orgz_info, FILE* fp, t_cb* cur_cb_info, t_rr_node* src_rr_node) { /* Check the file handler*/ if (NULL == fp) { vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n", __FILE__, __LINE__); exit(1); } /* Check */ assert((!(0 > cur_cb_info->x))&&(!(cur_cb_info->x > (nx + 1)))); assert((!(0 > cur_cb_info->y))&&(!(cur_cb_info->y > (ny + 1)))); if (1 == src_rr_node->fan_in) { /* Print a direct connection*/ dump_verilog_connection_box_short_interc(cur_sram_orgz_info, fp, cur_cb_info, src_rr_node); } else if (1 < src_rr_node->fan_in) { /* Print the multiplexer, fan_in >= 2 */ dump_verilog_connection_box_mux(cur_sram_orgz_info, fp, cur_cb_info, src_rr_node); } /*Nothing should be done else*/ return; } /* Count the number of configuration bits of a connection box */ int count_verilog_connection_box_conf_bits(t_sram_orgz_info* cur_sram_orgz_info, t_cb* cur_cb_info) { int side; int side_cnt = 0; int num_conf_bits = 0; for (side = 0; side < cur_cb_info->num_sides; side++) { /* Bypass side with zero IPINs*/ if (0 == cur_cb_info->num_ipin_rr_nodes[side]) { continue; } side_cnt++; assert(0 < cur_cb_info->num_ipin_rr_nodes[side]); assert(NULL != cur_cb_info->ipin_rr_node[side]); /* Count the number of configuration bits */ num_conf_bits += count_verilog_connection_box_one_side_conf_bits(cur_sram_orgz_info, cur_cb_info->num_ipin_rr_nodes[side], cur_cb_info->ipin_rr_node[side]); } /* Make sure only 2 sides of IPINs are printed */ assert((1 == side_cnt)||(2 == side_cnt)); return num_conf_bits; } /* Count the number of reserved configuration bits of a connection box */ int count_verilog_connection_box_reserved_conf_bits(t_sram_orgz_info* cur_sram_orgz_info, t_cb* cur_cb_info) { int side; int side_cnt = 0; int num_reserved_conf_bits = 0; int temp_num_reserved_conf_bits = 0; for (side = 0; side < cur_cb_info->num_sides; side++) { /* Bypass side with zero IPINs*/ if (0 == cur_cb_info->num_ipin_rr_nodes[side]) { continue; } side_cnt++; assert(0 < cur_cb_info->num_ipin_rr_nodes[side]); assert(NULL != cur_cb_info->ipin_rr_node[side]); /* Count the number of reserved configuration bits */ temp_num_reserved_conf_bits = count_verilog_connection_box_one_side_reserved_conf_bits(cur_sram_orgz_info, cur_cb_info->num_ipin_rr_nodes[side], cur_cb_info->ipin_rr_node[side]); /* Only consider the largest reserved configuration bits */ if (temp_num_reserved_conf_bits > num_reserved_conf_bits) { num_reserved_conf_bits = temp_num_reserved_conf_bits; } } /* Make sure only 2 sides of IPINs are printed */ assert((1 == side_cnt)||(2 == side_cnt)); return num_reserved_conf_bits; } /* Print connection boxes * Print the sub-circuit of a connection Box (Type: [CHANX|CHANY]) * Actually it is very similiar to switch box but * the difference is connection boxes connect Grid INPUT Pins to channels * TODO: merge direct connections into CB * -------------- -------------- * | | | | * | Grid | ChanY | Grid | * | [x][y+1] | [x][y] | [x+1][y+1] | * | | Connection | | * -------------- Box_Y[x][y] -------------- * ---------- * ChanX | Switch | ChanX * [x][y] | Box | [x+1][y] * Connection | [x][y] | Connection * Box_X[x][y] ---------- Box_X[x+1][y] * -------------- -------------- * | | | | * | Grid | ChanY | Grid | * | [x][y] | [x][y-1] | [x+1][y] | * | | Connection | | * --------------Box_Y[x][y-1]-------------- */ void dump_verilog_routing_connection_box_subckt(t_sram_orgz_info* cur_sram_orgz_info, char* verilog_dir, char* subckt_dir, t_cb* cur_cb_info, int LL_num_rr_nodes, t_rr_node* LL_rr_node, t_ivec*** LL_rr_node_indices, t_syn_verilog_opts fpga_verilog_opts) { int itrack, inode, side, x, y; int side_cnt = 0; FILE* fp = NULL; char* fname = NULL; int cur_num_sram, num_conf_bits, num_reserved_conf_bits, esti_sram_cnt; /* Check */ assert((!(0 > cur_cb_info->x))&&(!(cur_cb_info->x > (nx + 1)))); assert((!(0 > cur_cb_info->y))&&(!(cur_cb_info->y > (ny + 1)))); x= cur_cb_info->x; y= cur_cb_info->y; /* Print the definition of subckt*/ /* Identify the type of connection box */ switch(cur_cb_info->type) { case CHANX: /* Create file handler */ fp = verilog_create_one_subckt_file(subckt_dir, "Connection Block - X direction ", cbx_verilog_file_name_prefix, cur_cb_info->x, cur_cb_info->y, &fname); /* Print preprocessing flags */ verilog_include_defines_preproc_file(fp, verilog_dir); /* Comment lines */ fprintf(fp, "//----- Verilog Module of Connection Box -X direction [%d][%d] -----\n", x, y); fprintf(fp, "module "); fprintf(fp, "cbx_%d__%d_ ", cur_cb_info->x, cur_cb_info->y); break; case CHANY: /* Create file handler */ fp = verilog_create_one_subckt_file(subckt_dir, "Connection Block - Y direction ", cby_verilog_file_name_prefix, cur_cb_info->x, cur_cb_info->y, &fname); /* Print preprocessing flags */ verilog_include_defines_preproc_file(fp, verilog_dir); /* Comment lines */ fprintf(fp, "//----- Verilog Module of Connection Box -Y direction [%d][%d] -----\n", x, y); fprintf(fp, "module "); fprintf(fp, "cby_%d__%d_ ", cur_cb_info->x, cur_cb_info->y); break; default: vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid type of channel!\n", __FILE__, __LINE__); exit(1); } fprintf(fp, "(\n"); /* dump global ports */ if (0 < dump_verilog_global_ports(fp, global_ports_head, TRUE)) { fprintf(fp, ",\n"); } /* Print the ports of channels*/ /*connect to the mid point of a track*/ /* Get the chan_rr_nodes: Only one side of a cb_info has chan_rr_nodes*/ side_cnt = 0; for (side = 0; side < cur_cb_info->num_sides; side++) { /* Bypass side with zero channel width */ if (0 == cur_cb_info->chan_width[side]) { continue; } assert (0 < cur_cb_info->chan_width[side]); side_cnt++; for (itrack = 0; itrack < cur_cb_info->chan_width[side]; itrack++) { fprintf(fp, "input %s, \n", gen_verilog_routing_channel_one_midout_name( cur_cb_info, itrack)); } } /*check side_cnt */ assert((1 == side_cnt)||(2 == side_cnt)); side_cnt = 0; /* Print the ports of grids*/ /* only check ipin_rr_nodes of cur_cb_info */ for (side = 0; side < cur_cb_info->num_sides; side++) { /* Bypass side with zero IPINs*/ if (0 == cur_cb_info->num_ipin_rr_nodes[side]) { continue; } side_cnt++; assert(0 < cur_cb_info->num_ipin_rr_nodes[side]); assert(NULL != cur_cb_info->ipin_rr_node[side]); for (inode = 0; inode < cur_cb_info->num_ipin_rr_nodes[side]; inode++) { /* Print each INPUT Pins of a grid */ dump_verilog_grid_side_pin_with_given_index(fp, IPIN, /* This is an output of a connection box */ cur_cb_info->ipin_rr_node[side][inode]->ptc_num, cur_cb_info->ipin_rr_node_grid_side[side][inode], cur_cb_info->ipin_rr_node[side][inode]->xlow, cur_cb_info->ipin_rr_node[side][inode]->ylow, TRUE); } } /* Make sure only 2 sides of IPINs are printed */ assert((1 == side_cnt)||(2 == side_cnt)); /* Count the number of configuration bits */ /* Count the number of configuration bits to be consumed by this Switch block */ num_conf_bits = count_verilog_connection_box_conf_bits(cur_sram_orgz_info, cur_cb_info); /* Count the number of reserved configuration bits to be consumed by this Switch block */ num_reserved_conf_bits = count_verilog_connection_box_reserved_conf_bits(cur_sram_orgz_info, cur_cb_info); /* Estimate the sram_verilog_model->cnt */ cur_num_sram = get_sram_orgz_info_num_mem_bit(cur_sram_orgz_info); esti_sram_cnt = cur_num_sram + num_conf_bits; /* Record index */ cur_cb_info->num_reserved_conf_bits = num_reserved_conf_bits; cur_cb_info->conf_bits_lsb = cur_num_sram; cur_cb_info->conf_bits_msb = cur_num_sram + num_conf_bits; /* Put down configuration port */ /* output of each configuration bit */ /* Reserved sram ports */ dump_verilog_reserved_sram_ports(fp, cur_sram_orgz_info, 0, cur_cb_info->num_reserved_conf_bits - 1, VERILOG_PORT_INPUT); if (0 < cur_cb_info->num_reserved_conf_bits) { fprintf(fp, ",\n"); } /* Normal sram ports */ dump_verilog_sram_ports(fp, cur_sram_orgz_info, cur_cb_info->conf_bits_lsb, cur_cb_info->conf_bits_msb - 1, VERILOG_PORT_INPUT); /* Dump ports only visible during formal verification*/ if (0 < (cur_cb_info->conf_bits_msb - 1 - cur_cb_info->conf_bits_lsb)) { fprintf(fp, "\n"); fprintf(fp, "`ifdef %s\n", verilog_formal_verification_preproc_flag); fprintf(fp, ",\n"); dump_verilog_formal_verification_sram_ports(fp, cur_sram_orgz_info, cur_cb_info->conf_bits_lsb, cur_cb_info->conf_bits_msb - 1, VERILOG_PORT_OUTPUT); fprintf(fp, "\n"); fprintf(fp, "`endif\n"); } /* subckt definition ends with svdd and sgnd*/ fprintf(fp, ");\n"); /* Local wires for memory configurations */ dump_verilog_sram_config_bus_internal_wires(fp, cur_sram_orgz_info, cur_cb_info->conf_bits_lsb, cur_cb_info->conf_bits_msb - 1); /* Record LSB and MSB of reserved_conf_bits and normal conf_bits */ /* Print multiplexers or direct interconnect*/ side_cnt = 0; for (side = 0; side < cur_cb_info->num_sides; side++) { /* Bypass side with zero IPINs*/ if (0 == cur_cb_info->num_ipin_rr_nodes[side]) { continue; } side_cnt++; assert(0 < cur_cb_info->num_ipin_rr_nodes[side]); assert(NULL != cur_cb_info->ipin_rr_node[side]); for (inode = 0; inode < cur_cb_info->num_ipin_rr_nodes[side]; inode++) { dump_verilog_connection_box_interc(cur_sram_orgz_info, fp, cur_cb_info, cur_cb_info->ipin_rr_node[side][inode]); } } fprintf(fp, "endmodule\n"); /* Comment lines */ switch(cur_cb_info->type) { case CHANX: fprintf(fp, "//----- END Verilog Module of Connection Box -X direction [%d][%d] -----\n\n", x, y); break; case CHANY: fprintf(fp, "//----- END Verilog Module of Connection Box -Y direction [%d][%d] -----\n\n", x, y); break; default: vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid type of channel!\n", __FILE__, __LINE__); exit(1); } /* Check */ assert(esti_sram_cnt == get_sram_orgz_info_num_mem_bit(cur_sram_orgz_info)); /* Close file handler */ fclose(fp); /* Add fname to the linked list */ routing_verilog_subckt_file_path_head = add_one_subckt_file_name_to_llist(routing_verilog_subckt_file_path_head, fname); /* Free */ my_free(fname); return; } /* Top Function*/ /* Build the routing resource SPICE sub-circuits*/ void dump_verilog_routing_resources(t_sram_orgz_info* cur_sram_orgz_info, char* verilog_dir, char* subckt_dir, t_arch arch, t_det_routing_arch* routing_arch, int LL_num_rr_nodes, t_rr_node* LL_rr_node, t_ivec*** LL_rr_node_indices, t_rr_indexed_data* LL_rr_indexed_data, t_syn_verilog_opts fpga_verilog_opts) { int ix, iy; assert(UNI_DIRECTIONAL == routing_arch->directionality); /* Two major tasks: * 1. Generate sub-circuits for Routing Channels * 2. Generate sub-circuits for Switch Boxes */ /* Now: First task: Routing channels * Sub-circuits are named as chanx[ix][iy] or chany[ix][iy] for horizontal or vertical channels * each channels consist of a number of routing tracks. (Actually they are metal wires) * We only support single-driver routing architecture. * The direction is defined as INC_DIRECTION ------> and DEC_DIRECTION <-------- for chanx * The direction is defined as INC_DIRECTION /|\ and DEC_DIRECTION | for chany * | | * | | * | \|/ * For INC_DIRECTION chanx, the inputs are at the left of channels, the outputs are at the right of channels * For DEC_DIRECTION chanx, the inputs are at the right of channels, the outputs are at the left of channels * For INC_DIRECTION chany, the inputs are at the bottom of channels, the outputs are at the top of channels * For DEC_DIRECTION chany, the inputs are at the top of channels, the outputs are at the bottom of channels */ /* X - channels [1...nx][0..ny]*/ vpr_printf(TIO_MESSAGE_INFO, "Writing X-direction Channels...\n"); for (iy = 0; iy < (ny + 1); iy++) { for (ix = 1; ix < (nx + 1); ix++) { dump_verilog_routing_chan_subckt(cur_sram_orgz_info, verilog_dir, subckt_dir, ix, iy, CHANX, LL_num_rr_nodes, LL_rr_node, LL_rr_node_indices, LL_rr_indexed_data, arch.num_segments, arch.Segments, fpga_verilog_opts); } } /* Y - channels [1...ny][0..nx]*/ vpr_printf(TIO_MESSAGE_INFO, "Writing Y-direction Channels...\n"); for (ix = 0; ix < (nx + 1); ix++) { for (iy = 1; iy < (ny + 1); iy++) { dump_verilog_routing_chan_subckt(cur_sram_orgz_info, verilog_dir, subckt_dir, ix, iy, CHANY, LL_num_rr_nodes, LL_rr_node, LL_rr_node_indices, LL_rr_indexed_data, arch.num_segments, arch.Segments, fpga_verilog_opts); } } /* Switch Boxes*/ for (ix = 0; ix < (nx + 1); ix++) { for (iy = 0; iy < (ny + 1); iy++) { /* vpr_printf(TIO_MESSAGE_INFO, "Writing Switch Boxes[%d][%d]...\n", ix, iy); */ update_spice_models_routing_index_low(ix, iy, SOURCE, arch.spice->num_spice_model, arch.spice->spice_models); dump_verilog_routing_switch_box_subckt(cur_sram_orgz_info, verilog_dir, subckt_dir, &(sb_info[ix][iy]), LL_num_rr_nodes, LL_rr_node, LL_rr_node_indices, fpga_verilog_opts); update_spice_models_routing_index_high(ix, iy, SOURCE, arch.spice->num_spice_model, arch.spice->spice_models); } } /* Connection Boxes */ /* X - channels [1...nx][0..ny]*/ for (iy = 0; iy < (ny + 1); iy++) { for (ix = 1; ix < (nx + 1); ix++) { /* vpr_printf(TIO_MESSAGE_INFO, "Writing X-direction Connection Boxes[%d][%d]...\n", ix, iy); */ update_spice_models_routing_index_low(ix, iy, CHANX, arch.spice->num_spice_model, arch.spice->spice_models); if ((TRUE == is_cb_exist(CHANX, ix, iy)) &&(0 < count_cb_info_num_ipin_rr_nodes(cbx_info[ix][iy]))) { dump_verilog_routing_connection_box_subckt(cur_sram_orgz_info, verilog_dir, subckt_dir, &(cbx_info[ix][iy]), LL_num_rr_nodes, LL_rr_node, LL_rr_node_indices, fpga_verilog_opts); } update_spice_models_routing_index_high(ix, iy, CHANX, arch.spice->num_spice_model, arch.spice->spice_models); } } /* Y - channels [1...ny][0..nx]*/ for (ix = 0; ix < (nx + 1); ix++) { for (iy = 1; iy < (ny + 1); iy++) { /* vpr_printf(TIO_MESSAGE_INFO, "Writing Y-direction Connection Boxes[%d][%d]...\n", ix, iy); */ update_spice_models_routing_index_low(ix, iy, CHANY, arch.spice->num_spice_model, arch.spice->spice_models); if ((TRUE == is_cb_exist(CHANY, ix, iy)) &&(0 < count_cb_info_num_ipin_rr_nodes(cby_info[ix][iy]))) { dump_verilog_routing_connection_box_subckt(cur_sram_orgz_info, verilog_dir, subckt_dir, &(cby_info[ix][iy]), LL_num_rr_nodes, LL_rr_node, LL_rr_node_indices, fpga_verilog_opts); } update_spice_models_routing_index_high(ix, iy, CHANY, arch.spice->num_spice_model, arch.spice->spice_models); } } /* Output a header file for all the routing blocks */ vpr_printf(TIO_MESSAGE_INFO,"Generating header file for routing submodules...\n"); dump_verilog_subckt_header_file(routing_verilog_subckt_file_path_head, subckt_dir, routing_verilog_file_name); return; }