PandA-2024.02
Read_axisModuleGenerator.cpp
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48 
49 #include "behavioral_helper.hpp"
50 #include "call_graph_manager.hpp"
51 #include "constant_strings.hpp"
52 #include "function_behavior.hpp"
53 #include "hls_manager.hpp"
54 #include "language_writer.hpp"
55 #include "structural_objects.hpp"
56 
57 enum in_port
58 {
59  i_clock = 0,
66 };
67 
69 {
70  o_done = 0,
74 };
75 
77 {
78 }
79 
80 void Read_axisModuleGenerator::InternalExec(std::ostream& out, structural_objectRef mod, unsigned int function_id,
81  vertex /* op_v */, const HDLWriter_Language /* language */,
82  const std::vector<ModuleGenerator::parameter>& /* _p */,
83  const std::vector<ModuleGenerator::parameter>& _ports_in,
84  const std::vector<ModuleGenerator::parameter>& _ports_out,
85  const std::vector<ModuleGenerator::parameter>& /* _ports_inout */)
86 {
87  THROW_ASSERT(_ports_in.size() >= i_last, "");
88  THROW_ASSERT(_ports_out.size() >= o_last, "");
89 
90  const auto bundle_name = mod->get_id().substr(0, mod->get_id().find(STR_CST_interface_parameter_keyword));
91  const auto top_fid = HLSMgr->CGetCallGraphManager()->GetRootFunction(function_id);
92  const auto top_fname = HLSMgr->CGetFunctionBehavior(top_fid)->CGetBehavioralHelper()->GetMangledFunctionName();
93  const auto& iface_attrs = HLSMgr->module_arch->GetArchitecture(top_fname)->ifaces.at(bundle_name);
94 
95  if(iface_attrs.find(FunctionArchitecture::iface_register) != iface_attrs.end())
96  {
97  THROW_ERROR("Registered AXI-Stream interface not yet implemented.");
98  }
99  out << "reg started, started_0;\n"
100  << "reg done_0;\n\n";
101 
102  out << "always @(posedge clock 1RESET_EDGE)\n"
103  << "begin\n"
104  << " if (1RESET_VALUE)\n"
105  << " begin\n"
106  << " started <= 0;\n"
107  << " end\n"
108  << " else\n"
109  << " begin\n"
110  << " started <= started_0;\n"
111  << " end\n"
112  << "end\n\n";
113 
114  out << "always @(*)\n"
115  << "begin\n"
116  << " started_0 = (started || " << _ports_in[i_start].name << ") & ~" << _ports_in[i_tvalid].name << ";\n"
117  << " done_0 = (started | " << _ports_in[i_start].name << ") & " << _ports_in[i_tvalid].name << ";\n"
118  << "end\n\n";
119 
120  out << "assign " << _ports_out[o_out1].name << " = {" << _ports_in[i_tvalid].name << ", " << _ports_in[i_tdata].name
121  << "};\n";
122  out << "assign " << _ports_out[o_done].name << " = done_0;\n";
123  out << "assign " << _ports_out[o_ready].name << " = done_0;\n";
124 }
Data structure representing the entire HLS information.
#define STR_CST_interface_parameter_keyword
interface_parameter_keyword
const std::string & get_id() const
Return the identifier associated with the structural_object.
HDLWriter_Language
This class writes different HDL based descriptions (VHDL, Verilog, SystemC) starting from a structura...
void InternalExec(std::ostream &out, structural_objectRef mod, unsigned int function_id, vertex op_v, const HDLWriter_Language language, const std::vector< ModuleGenerator::parameter > &_p, const std::vector< ModuleGenerator::parameter > &_ports_in, const std::vector< ModuleGenerator::parameter > &_ports_out, const std::vector< ModuleGenerator::parameter > &_ports_inout) final
boost::graph_traits< graph >::vertex_descriptor vertex
vertex definition.
Definition: graph.hpp:1303
Read_axisModuleGenerator(const HLS_managerRef &HLSMgr)
#define THROW_ERROR(str_expr)
helper function used to throw an error in a standard way
Definition: exceptions.hpp:263
This class describes all classes used to represent a structural object.
Template borrowed from the ANTLR library by Terence Parr (http://www.jGuru.com - Software rights: htt...
Definition: refcount.hpp:94
constant strings
Wrapper to call graph.
A brief description of the C++ Header File.
#define THROW_ASSERT(cond, str_expr)
helper function used to check an assert and if needed to throw an error in a standard way ...
Definition: exceptions.hpp:289

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