projects / OpenSPARC-T2-DV / blame
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1 | // ========== Copyright Header Begin ========================================== |
| 2 | // | |
| 3 | // OpenSPARC T2 Processor File: DaemonAccessMethod.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 daemon_rd (bit[31:0] index, bit[CSRT_ADDR_WIDTH-1:0] addr, var bit [CSRT_DATA_WIDTH-1:0] dout, bit success, bit[31:0] watchdog); | |
| 42 | extern verilog_task daemon_wr (bit[31:0] index, bit zsub, bit[CSRT_ADDR_WIDTH-1:0] addr, bit [CSRT_DATA_WIDTH-1:0] din, bit success, bit[31:0] watchdog); | |
| 43 | #endif | |
| 44 | ||
| 45 | class DaemonAccessMethod extends CSRAccessMethod { | |
| 46 | ||
| 47 | local integer index; | |
| 48 | local integer zsub; | |
| 49 | local integer csr_daemon_sem; | |
| 50 | ||
| 51 | ||
| 52 | //================================================= | |
| 53 | // Constructor | |
| 54 | //================================================= | |
| 55 | ||
| 56 | task new ( bit [31:0] input_index) { | |
| 57 | ||
| 58 | index = input_index; | |
| 59 | csr_daemon_sem = alloc(SEMAPHORE,0,1,1); | |
| 60 | ||
| 61 | if (csr_daemon_sem == 0) | |
| 62 | QuickReport(CSRReport, RTYP_CSR_ERROR, "DaemonAccessMethod::new: Out of semaphore space."); | |
| 63 | ||
| 64 | } // end task new () | |
| 65 | ||
| 66 | ||
| 67 | //================================================= | |
| 68 | // Read function | |
| 69 | //================================================= | |
| 70 | ||
| 71 | function bit [CSRT_DATA_WIDTH-1:0] read (bit[CSRT_ADDR_OFFSET_WIDTH-1:0] addr) { | |
| 72 | #ifdef N2_FC | |
| 73 | QuickReport(CSRReport, RTYP_CSR_ERROR, "DaemonAccessMethod::read: not supported in FC bench. addr = %h.", addr); | |
| 74 | #else | |
| 75 | bit [CSRT_DATA_WIDTH-1:0] rd_data; | |
| 76 | bit success; | |
| 77 | bit [31:0] watchdog; | |
| 78 | ||
| 79 | semaphore_get (WAIT, csr_daemon_sem, 1); | |
| 80 | daemon_rd (index, addr, rd_data, success, watchdog); | |
| 81 | ||
| 82 | if (!success) | |
| 83 | QuickReport(CSRReport, RTYP_CSR_ERROR, "DaemonAccessMethod::read: Timeout for addr = %h.", addr); | |
| 84 | ||
| 85 | read = rd_data; | |
| 86 | semaphore_put (csr_daemon_sem, 1); | |
| 87 | #endif | |
| 88 | } // end function read() | |
| 89 | ||
| 90 | ||
| 91 | //================================================= | |
| 92 | // Write task | |
| 93 | //================================================= | |
| 94 | ||
| 95 | task write ( bit[CSRT_ADDR_OFFSET_WIDTH-1:0] addr, bit [CSRT_DATA_WIDTH-1:0] wr_data ) { | |
| 96 | #ifdef N2_FC | |
| 97 | QuickReport(CSRReport, RTYP_CSR_ERROR, "DaemonAccessMethod::write: not supported in FC bench. addr = %h.", addr); | |
| 98 | #else | |
| 99 | bit success; | |
| 100 | bit [31:0] watchdog; | |
| 101 | ||
| 102 | semaphore_get (WAIT, csr_daemon_sem, 1); | |
| 103 | daemon_wr (index, zsub, addr, wr_data, success, watchdog); | |
| 104 | ||
| 105 | if (!success) | |
| 106 | QuickReport(CSRReport, RTYP_CSR_ERROR, "DaemonAccessMethod::write: Timeout for addr = %h.", addr); | |
| 107 | ||
| 108 | semaphore_put (csr_daemon_sem, 1); | |
| 109 | #endif | |
| 110 | } // end task write | |
| 111 | ||
| 112 | } // end class DaemonAccessMethod | |
| 113 |