Commit | Line | Data |
---|---|---|
86530b38 AT |
1 | // ========== Copyright Header Begin ========================================== |
2 | // | |
3 | // OpenSPARC T2 Processor File: pcie_common_srq.v | |
4 | // Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved | |
5 | // 4150 Network Circle, Santa Clara, California 95054, U.S.A. | |
6 | // | |
7 | // * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
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 | |
19 | // along with this program; if not, write to the Free Software | |
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 | |
23 | // choice is available it will apply instead, Sun elects to use only | |
24 | // the General Public License version 2 (GPLv2) at this time for any | |
25 | // software where a choice of GPL license versions is made | |
26 | // available with the language indicating that GPLv2 or any later version | |
27 | // may be used, or where a choice of which version of the GPL is applied is | |
28 | // otherwise unspecified. | |
29 | // | |
30 | // Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
31 | // CA 95054 USA or visit www.sun.com if you need additional information or | |
32 | // have any questions. | |
33 | // | |
34 | // ========== Copyright Header End ============================================ | |
35 | module pcie_common_srq ( | |
36 | clk, | |
37 | rst_l, | |
38 | enq, | |
39 | deq, | |
40 | di, | |
41 | do, | |
42 | empty, | |
43 | full, | |
44 | afull | |
45 | ); | |
46 | ||
47 | // ---------------------------------------------------------------------------- | |
48 | // Parameters | |
49 | // ---------------------------------------------------------------------------- | |
50 | parameter QD = 4, // queue depth | |
51 | QW = 8; // queue width | |
52 | ||
53 | // ---------------------------------------------------------------------------- | |
54 | // Ports | |
55 | // ---------------------------------------------------------------------------- | |
56 | input clk; // clock | |
57 | input rst_l; // reset | |
58 | ||
59 | input enq; // enqueue | |
60 | input deq; // dequeue | |
61 | ||
62 | input [QW-1:0] di; // data in | |
63 | ||
64 | output [QW-1:0] do; // data out | |
65 | ||
66 | output empty; // empty | |
67 | output full; // full | |
68 | output afull; // almost full | |
69 | ||
70 | // ---------------------------------------------------------------------------- | |
71 | // Variables | |
72 | // ---------------------------------------------------------------------------- | |
73 | ||
74 | wire [QW-1:0] do; | |
75 | wire empty; | |
76 | wire full; | |
77 | wire afull; | |
78 | ||
79 | wire [QD-1:0] vld; | |
80 | wire [QD-1:0] ld; | |
81 | wire [QD-2:0] ds; | |
82 | ||
83 | // ---------------------------------------------------------------------------- | |
84 | // Zero In Checkers | |
85 | // ---------------------------------------------------------------------------- | |
86 | ||
87 | //0in fifo -enq enq -deq deq -depth QD -enq_data di -deq_data do | |
88 | ||
89 | // ---------------------------------------------------------------------------- | |
90 | // Instantiations | |
91 | // ---------------------------------------------------------------------------- | |
92 | ||
93 | pcie_common_srq_qdp #(QD, QW) qdp ( | |
94 | .clk (clk), | |
95 | .rst_l (rst_l), | |
96 | .ld (ld), | |
97 | .ds (ds), | |
98 | .di (di), | |
99 | .do (do) | |
100 | ); | |
101 | ||
102 | pcie_common_srq_qcp #(QD) qcp ( | |
103 | .clk (clk), | |
104 | .rst_l (rst_l), | |
105 | .enq (enq), | |
106 | .deq (deq), | |
107 | .ld (ld), | |
108 | .ds (ds), | |
109 | .vld (vld) | |
110 | ); | |
111 | ||
112 | pcie_common_srq_qci #(QD) qci ( | |
113 | .vld (vld), | |
114 | .empty (empty), | |
115 | .full (full), | |
116 | .afull (afull) | |
117 | ); | |
118 | ||
119 | endmodule // pcie_common_srq | |
120 |