| 1 | // ========== Copyright Header Begin ========================================== |
| 2 | // |
| 3 | // OpenSPARC T2 Processor File: dmu_mmu_csr_log.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 dmu_mmu_csr_log |
| 36 | ( |
| 37 | clk, |
| 38 | por_l, |
| 39 | log_w_ld, |
| 40 | csrbus_wr_data, |
| 41 | log_csrbus_read_data, |
| 42 | log_en_hw_read |
| 43 | ); |
| 44 | |
| 45 | //==================================================================== |
| 46 | // Polarity declarations |
| 47 | //==================================================================== |
| 48 | input clk; // Clock |
| 49 | input por_l; // Reset signal |
| 50 | input log_w_ld; // SW load bus |
| 51 | input [`FIRE_CSRBUS_DATA_WIDTH-1:0] csrbus_wr_data; // SW write data |
| 52 | output [`FIRE_DLC_MMU_CSR_LOG_WIDTH-1:0] log_csrbus_read_data; // SW read data |
| 53 | output [`FIRE_DLC_MMU_CSR_LOG_EN_INT_SLC] log_en_hw_read; // This signal |
| 54 | // provides the |
| 55 | // current value of |
| 56 | // log_en. |
| 57 | |
| 58 | //==================================================================== |
| 59 | // Type declarations |
| 60 | //==================================================================== |
| 61 | wire clk; // Clock |
| 62 | wire por_l; // Reset signal |
| 63 | wire log_w_ld; // SW load bus |
| 64 | wire [`FIRE_CSRBUS_DATA_WIDTH-1:0] csrbus_wr_data; // SW write data |
| 65 | wire [`FIRE_DLC_MMU_CSR_LOG_WIDTH-1:0] log_csrbus_read_data; // SW read data |
| 66 | wire [`FIRE_DLC_MMU_CSR_LOG_EN_INT_SLC] log_en_hw_read; // This signal provides |
| 67 | // the current value of |
| 68 | // log_en. |
| 69 | |
| 70 | //==================================================================== |
| 71 | // Logic |
| 72 | //==================================================================== |
| 73 | |
| 74 | // synopsys translate_off |
| 75 | // verilint 123 off |
| 76 | // verilint 498 off |
| 77 | reg omni_ld; |
| 78 | reg [`FIRE_DLC_MMU_CSR_LOG_WIDTH-1:0] omni_data; |
| 79 | |
| 80 | // vlint flag_unsynthesizable_initial off |
| 81 | initial |
| 82 | begin |
| 83 | omni_ld = 1'b0; |
| 84 | omni_data = `FIRE_DLC_MMU_CSR_LOG_WIDTH'b0; |
| 85 | end// vlint flag_unsynthesizable_initial on |
| 86 | |
| 87 | // verilint 123 on |
| 88 | // verilint 498 on |
| 89 | // synopsys translate_on |
| 90 | |
| 91 | //----- Hardware Data Out Mux Assignments |
| 92 | assign log_en_hw_read= |
| 93 | log_csrbus_read_data |
| 94 | [`FIRE_DLC_MMU_CSR_LOG_EN_SLC]; |
| 95 | |
| 96 | //==================================================================== |
| 97 | // Instantiation of entries |
| 98 | //==================================================================== |
| 99 | |
| 100 | //----- Entry 0 |
| 101 | dmu_mmu_csr_log_entry log_0 |
| 102 | ( |
| 103 | // synopsys translate_off |
| 104 | .omni_ld (omni_ld), |
| 105 | .omni_data (omni_data), |
| 106 | // synopsys translate_on |
| 107 | .clk (clk), |
| 108 | .por_l (por_l), |
| 109 | .w_ld (log_w_ld), |
| 110 | .csrbus_wr_data (csrbus_wr_data), |
| 111 | .log_csrbus_read_data (log_csrbus_read_data) |
| 112 | ); |
| 113 | |
| 114 | endmodule // dmu_mmu_csr_log |