diff options
Diffstat (limited to 'fpga_interchange/xdc.cc')
| -rw-r--r-- | fpga_interchange/xdc.cc | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/fpga_interchange/xdc.cc b/fpga_interchange/xdc.cc new file mode 100644 index 00000000..584a1777 --- /dev/null +++ b/fpga_interchange/xdc.cc @@ -0,0 +1,152 @@ +/* + * nextpnr -- Next Generation Place and Route + * + * Copyright (C) 2019 David Shah <david@symbioticeda.com> + * Copyright (C) 2021 Symbiflow Authors + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ + +#include "xdc.h" +#include <string> +#include "log.h" +#include "nextpnr.h" + +NEXTPNR_NAMESPACE_BEGIN + +static int port_set_from_any(Tcl_Interp *interp, Tcl_Obj *objPtr) { return TCL_ERROR; } + +static void set_tcl_obj_string(Tcl_Obj *objPtr, const std::string &s) +{ + NPNR_ASSERT(objPtr->bytes == nullptr); + // Need to have space for the end null byte. + objPtr->bytes = Tcl_Alloc(s.size() + 1); + + // Length is length of string, not including the end null byte. + objPtr->length = s.size(); + + std::copy(s.begin(), s.end(), objPtr->bytes); + objPtr->bytes[objPtr->length] = '\0'; +} + +static void port_update_string(Tcl_Obj *objPtr) +{ + const Context *ctx = static_cast<const Context *>(objPtr->internalRep.twoPtrValue.ptr1); + PortInfo *port_info = static_cast<PortInfo *>(objPtr->internalRep.twoPtrValue.ptr2); + + std::string port_name = port_info->name.str(ctx); + set_tcl_obj_string(objPtr, port_name); +} + +static void port_dup(Tcl_Obj *srcPtr, Tcl_Obj *dupPtr) +{ + dupPtr->internalRep.twoPtrValue = srcPtr->internalRep.twoPtrValue; +} + +static void port_free(Tcl_Obj *objPtr) {} + +static void Tcl_SetStringResult(Tcl_Interp *interp, const std::string &s) +{ + char *copy = Tcl_Alloc(s.size() + 1); + std::copy(s.begin(), s.end(), copy); + copy[s.size()] = '\0'; + Tcl_SetResult(interp, copy, TCL_DYNAMIC); +} + +static Tcl_ObjType port_object = { + "port", port_free, port_dup, port_update_string, port_set_from_any, +}; + +static int get_ports(ClientData data, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) +{ + const Context *ctx = static_cast<const Context *>(data); + if (objc == 1) { + // Return list of all ports. + Tcl_SetStringResult(interp, "Unimplemented"); + return TCL_ERROR; + } else if (objc == 2) { + const char *arg0 = Tcl_GetString(objv[1]); + IdString port_name = ctx->id(arg0); + + auto iter = ctx->ports.find(port_name); + if (iter == ctx->ports.end()) { + Tcl_SetStringResult(interp, "Could not find port " + port_name.str(ctx)); + return TCL_ERROR; + } + + Tcl_Obj *result = Tcl_NewObj(); + result->typePtr = &port_object; + result->internalRep.twoPtrValue.ptr1 = (void *)(ctx); + result->internalRep.twoPtrValue.ptr2 = (void *)(&iter->second); + + result->bytes = nullptr; + port_update_string(result); + + Tcl_SetObjResult(interp, result); + return TCL_OK; + } else { + return TCL_ERROR; + } +} + +static int set_property(ClientData data, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) +{ + // set_property <property> <value> <object> + if (objc != 4) { + Tcl_SetStringResult(interp, "Only simple 'set_property <property> <value> <object>' is supported"); + return TCL_ERROR; + } + + const char *property = Tcl_GetString(objv[1]); + const char *value = Tcl_GetString(objv[2]); + const Tcl_Obj *object = objv[3]; + + if (object->typePtr != &port_object) { + Tcl_SetStringResult(interp, "Only port objects are handled right now!"); + return TCL_ERROR; + } + + const Context *ctx = static_cast<const Context *>(object->internalRep.twoPtrValue.ptr1); + PortInfo *port_info = static_cast<PortInfo *>(object->internalRep.twoPtrValue.ptr2); + NPNR_ASSERT(port_info->net != nullptr); + CellInfo *cell = ctx->port_cells.at(port_info->name); + + cell->attrs[ctx->id(property)] = Property(value); + + return TCL_OK; +} + +TclInterp::TclInterp(Context *ctx) +{ + interp = Tcl_CreateInterp(); + NPNR_ASSERT(Tcl_Init(interp) == TCL_OK); + + Tcl_RegisterObjType(&port_object); + + NPNR_ASSERT(Tcl_Eval(interp, "rename unknown _original_unknown") == TCL_OK); + NPNR_ASSERT(Tcl_Eval(interp, "proc unknown args {\n" + " set result [scan [lindex $args 0] \"%d\" value]\n" + " if { $result == 1 && [llength $args] == 1 } {\n" + " return \\[$value\\]\n" + " } else {\n" + " uplevel 1 [list _original_unknown {*}$args]\n" + " }\n" + "}") == TCL_OK); + Tcl_CreateObjCommand(interp, "get_ports", get_ports, ctx, nullptr); + Tcl_CreateObjCommand(interp, "set_property", set_property, ctx, nullptr); +} + +TclInterp::~TclInterp() { Tcl_DeleteInterp(interp); } + +NEXTPNR_NAMESPACE_END |