| 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 | |