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1 | // ========== Copyright Header Begin ========================================== |
2 | // | |
3 | // OpenSPARC T2 Processor File: OmniAccessMethod.vr | |
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 | #include <vera_defines.vrh> | |
36 | #include "general_csr_defines.vri" | |
37 | #include "report_macros.vri" | |
38 | #include "CSRAccessMethod.vrh" | |
39 | ||
40 | #ifndef N2_FC | |
41 | extern verilog_task omni_rd (bit[31:0] index, bit[CSRT_ADDR_WIDTH-1:0] addr, var bit [CSRT_DATA_WIDTH-1:0] dout) ; | |
42 | extern verilog_task omni_wr (bit[31:0] index, bit zsub, bit[CSRT_ADDR_WIDTH-1:0] addr, bit [CSRT_DATA_WIDTH-1:0] din) ; | |
43 | #endif | |
44 | ||
45 | //================================================= | |
46 | // Omni access to the wci_cluster_config register | |
47 | //================================================= | |
48 | ||
49 | class OmniAccessMethod extends CSRAccessMethod { | |
50 | ||
51 | local integer index; | |
52 | local integer zsub; | |
53 | local integer csr_omni_sem; | |
54 | ||
55 | ||
56 | //================================================= | |
57 | // Constructor | |
58 | //================================================= | |
59 | ||
60 | task new ( bit [31:0] input_index) { | |
61 | ||
62 | index = input_index; | |
63 | csr_omni_sem = alloc(SEMAPHORE,0,1,1); | |
64 | if (csr_omni_sem == 0) | |
65 | QuickReport(CSRReport, RTYP_CSR_ERROR, "OmniAccessMethod::new: Out of semaphore space."); | |
66 | ||
67 | } // end task new () | |
68 | ||
69 | ||
70 | //================================================= | |
71 | // Read function | |
72 | //================================================= | |
73 | ||
74 | function bit [CSRT_DATA_WIDTH-1:0] read (bit[CSRT_ADDR_OFFSET_WIDTH-1:0] addr) { | |
75 | #ifdef N2_FC | |
76 | QuickReport(CSRReport, RTYP_CSR_ERROR, "OmniAccessMethod::read: not supported in FC bench. addr = %h.", addr); | |
77 | #else | |
78 | ||
79 | bit [CSRT_DATA_WIDTH-1:0] rd_data; | |
80 | ||
81 | semaphore_get (WAIT, csr_omni_sem, 1); | |
82 | omni_rd (index, addr, rd_data); | |
83 | read = rd_data; | |
84 | semaphore_put (csr_omni_sem, 1); | |
85 | #endif | |
86 | } // end function read() | |
87 | ||
88 | ||
89 | //================================================= | |
90 | // Write task | |
91 | //================================================= | |
92 | ||
93 | task write ( bit[CSRT_ADDR_OFFSET_WIDTH-1:0] addr, bit [CSRT_DATA_WIDTH-1:0] wr_data ) { | |
94 | #ifdef N2_FC | |
95 | QuickReport(CSRReport, RTYP_CSR_ERROR, "OmniAccessMethod::write: not supported in FC bench. addr = %h.", addr); | |
96 | #else | |
97 | ||
98 | semaphore_get (WAIT, csr_omni_sem, 1); | |
99 | omni_wr (index, zsub, addr, wr_data); | |
100 | semaphore_put (csr_omni_sem, 1); | |
101 | #endif | |
102 | } // end task write | |
103 | ||
104 | ||
105 | } // end class OmniAccessMethod | |
106 |