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Initial commit of OpenSPARC T2 design and verification files.
[OpenSPARC-T2-DV] / verif / model / pcie / csr / csr_arb.hpp
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AT		 1// ========== Copyright Header Begin ==========================================
2//
3// OpenSPARC T2 Processor File: csr_arb.hpp
4// Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved
5// 4150 Network Circle, Santa Clara, California 95054, U.S.A.
6//
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8//
9// This program is free software; you can redistribute it and/or modify
10// it under the terms of the GNU General Public License as published by
11// the Free Software Foundation; version 2 of the License.
12//
13// This program is distributed in the hope that it will be useful,
14// but WITHOUT ANY WARRANTY; without even the implied warranty of
15// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16// GNU General Public License for more details.
17//
18// You should have received a copy of the GNU General Public License
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20// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21//
22// For the avoidance of doubt, and except that if any non-GPL license
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33//
34// ========== Copyright Header End ============================================
35#ifndef INC_csr_arb_hpp__
36#define INC_csr_arb_hpp__
37
38#include "pcie_common/config.hpp"
39#include <queue>
40
41USING_NAMESPACE(std);
42using std::pair;
43
44#include "tlm.h"
45using tlm::tlm_transport_if;
46using tlm::tlm_slave_if;
47
48namespace pcie
49{
50 template < typename REQ , typename RSP , int N =1>
51 class csr_arb : public sc_module
52 {
53 public:
54 typedef sc_port< tlm_slave_if< REQ , RSP > > port_type;
55
56 port_type master_port[N];
57
58 sc_port< tlm_transport_if< REQ , RSP > , 1 > slave_port;
59
60 sc_in< bool > csr_clock;
61
62 SC_HAS_PROCESS( csr_arb );
63
64 csr_arb( sc_module_name module_name ,
65 const sc_time &t = sc_time( 1 , SC_NS ) ) :
66 sc_module( module_name ) ,
67 slave_port("slave_port") ,
68 arb_t( t )
69 {
70 LOG_DEBUG << "csr_arb()";
71 SC_THREAD( run );
72 }
73
74 void add_interface( port_type *port , const int priority ) {
75 if_map.insert( multimap_type::value_type( priority , port ) );
76 }
77
78 protected:
79 typedef multimap< int , port_type * > multimap_type;
80 multimap_type if_map;
81
82 typedef struct {
83 REQ req;
84 port_type *port;
85 } req_port_type;
86
87 queue < req_port_type* > event_q, read_q, write_q;
88
89 sc_time arb_t;
90
91 virtual void run() {
92 req_port_type *next_rp;
93 RSP rsp;
94 LOG_DEBUG << "csr_arb::run()";
95 for( ;; ) {
96 wait( csr_clock.posedge_event() );
97
98 gather_requests ();
99 // Process setup requests
100 while (!event_q.empty()) {
101 next_rp = event_q.front();
102 event_q.pop();
103 //LOG_DEBUG << "Calling Event Req : " << next_rp->port->name();
104 rsp = slave_port->transport((next_rp->req));
105 //LOG_DEBUG << "Putting Event Req : " << next_rp->port->name();
106 (*(next_rp->port))->put(rsp);
107 //LOG_DEBUG << "Putting Event Req (done): " << next_rp->port->name();
108 delete next_rp;
109 //LOG_DEBUG << "Delete ReqPacket";
110 }
111 while (!write_q.empty()) {
112 next_rp = write_q.front();
113 write_q.pop();
114 //LOG_DEBUG << "Calling Write Req";
115 rsp = slave_port->transport((next_rp->req));
116 //LOG_DEBUG << "Putting Write Req";
117 (*(next_rp->port))->put(rsp);
118 delete next_rp;
119 //LOG_DEBUG << "Delete ReqPacket";
120
121 }
122 while (!read_q.empty()) {
123 next_rp = read_q.front();
124 read_q.pop();
125 //LOG_DEBUG << "Calling Read Req";
126 rsp = slave_port->transport((next_rp->req));
127 //LOG_DEBUG << "Putting Read Req";
128 (*(next_rp->port))->put(rsp);
129 delete next_rp;
130 //LOG_DEBUG << "Delete ReqPacket";
131 }
132 }//end for(;;)
133 }//end run()
134
135 virtual void gather_requests () {
136 multimap_type::iterator i;
137 port_type *p;
138 REQ req;
139 req_port_type *rp;
140
141 for (i = if_map.begin(); i != if_map.end(); ++i) {
142 p = (*i).second;
143 if ( (*p)->nb_get(req) ) {
144 rp = new req_port_type;
145 //LOG_DEBUG << "NEW ReqPacket";
146 rp->req = req;
147 rp->port = p;
148
149 switch (rp->req._cmd) {
150 case CSR_RESET:
151 LOG_DEBUG << "CSR_RESET : " << rp->port->name();
152 event_q.push(rp);
153 break;
154 case CSR_CREATE:
155 LOG_DEBUG << "CSR_CREATE : " << rp->port->name();
156 event_q.push(rp);
157 break;
158 case CSR_SETEVENT:
159 LOG_DEBUG << "CSR_SETEVENT : " << rp->port->name();
160 event_q.push(rp);
161 break;
162 case CSR_ISMAPPED:
163 LOG_DEBUG << "CSR_ISMAPPED: " << rp->port->name();
164 read_q.push(rp);
165 break;
166 case CSR_READ:
167 LOG_DEBUG << "CSR_READ: " << rp->port->name();
168 read_q.push(rp);
169 break;
170 case CSR_WRITE:
171 LOG_DEBUG << "CSR_WRITE : " << rp->port->name();
172 write_q.push(rp);
173 break;
174 case CSR_WRITE_MASK:
175 LOG_DEBUG << "CSR_WRITE_FIELD : " << rp->port->name();
176 write_q.push(rp);
177 break;
178 }
179 }
180 }
181 }//end gather_requests()
182 };
183};
184#endif //INC_csr_arb_hpp__
Full OpenSPARC design & verification tarball including full HDL.