| 1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== |
| 3 | * |
| 4 | * OpenSPARC T2 Processor File: cmp_macros.h |
| 5 | * Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved |
| 6 | * 4150 Network Circle, Santa Clara, California 95054, U.S.A. |
| 7 | * |
| 8 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; version 2 of the License. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | * For the avoidance of doubt, and except that if any non-GPL license |
| 24 | * choice is available it will apply instead, Sun elects to use only |
| 25 | * the General Public License version 2 (GPLv2) at this time for any |
| 26 | * software where a choice of GPL license versions is made |
| 27 | * available with the language indicating that GPLv2 or any later version |
| 28 | * may be used, or where a choice of which version of the GPL is applied is |
| 29 | * otherwise unspecified. |
| 30 | * |
| 31 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 32 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 33 | * have any questions. |
| 34 | * |
| 35 | * |
| 36 | * ========== Copyright Header End ============================================ |
| 37 | */ |
| 38 | #ifndef ALREADY_INCLUDED_CMP_MACROS_DOT_H |
| 39 | #define ALREADY_INCLUDED_CMP_MACROS_DOT_H |
| 40 | |
| 41 | |
| 42 | #ifndef SYNC_THREADS |
| 43 | #define SYNC_THREADS 0xff |
| 44 | #endif |
| 45 | |
| 46 | |
| 47 | /**************************************************************** |
| 48 | * Objective: |
| 49 | * Macro used by one main thread to sync up with any other running |
| 50 | * threads, uses parking as the method to accomplish this. |
| 51 | * |
| 52 | * Syntax: |
| 53 | * SYNC_THREAD_MAIN( |
| 54 | * exit_label, tmp_reg_1, tmp_reg_2, tmp_reg_3 |
| 55 | * ) |
| 56 | * |
| 57 | * Args: |
| 58 | * exit_label -> label to branch to on timeout |
| 59 | * tmp_reg_1/2/3 -> temporary registers |
| 60 | * |
| 61 | * Expectation from macro user: |
| 62 | * The macro SYNC_THREAD_OTHER will be used in the other thread's code. |
| 63 | * These two macros work together to accomplish the synchronization. |
| 64 | * NOTE that these macros assume that the other threads have already |
| 65 | * been started. |
| 66 | * |
| 67 | * Also SYNC_THREADS needs to be defined to indicate which threads are |
| 68 | * to be used. It has a default of 0xff. |
| 69 | */ |
| 70 | |
| 71 | define(SYNC_THREAD_MAIN,` |
| 72 | setx ASI_CMP_CORE_RUNNING_STATUS, $2, $3 |
| 73 | setx 0x400, $2, $4 |
| 74 | 1: |
| 75 | subcc $4, 1, $4 |
| 76 | brz $4, $1 |
| 77 | nop |
| 78 | ldxa [$3] ASI_CMP_CORE, $2 |
| 79 | membar #Sync |
| 80 | subcc $2, 0x1, $2 |
| 81 | brnz $2, 1b |
| 82 | nop |
| 83 | |
| 84 | setx SYNC_THREADS, $2, $3 |
| 85 | setx ASI_CMP_CORE_RUNNING_W1S, $2, $4 |
| 86 | stxa $3, [$4] ASI_CMP_CORE |
| 87 | membar #Sync |
| 88 | ') |
| 89 | |
| 90 | |
| 91 | /**************************************************************** |
| 92 | * Objective: |
| 93 | * Macro used other threads to sync up with a main thread, uses |
| 94 | * parking as the method to accomplish this. |
| 95 | * |
| 96 | * Syntax: |
| 97 | * SYNC_THREAD_OTHER( |
| 98 | * thread_id, tmp_reg_1, tmp_reg_2 |
| 99 | * ) |
| 100 | * |
| 101 | * Args: |
| 102 | * thread_id -> register containing thread id # for this tread |
| 103 | * tmp_reg_1/2 -> temporary registers |
| 104 | * |
| 105 | * Expectation from macro user: |
| 106 | * The macro SYNC_THREAD_OTHER will be used in the code for any thread |
| 107 | * except thread 0. Works with the SYNC_THREAD_MAIN macro. These two |
| 108 | * macros work together to accomplish the synchronization. |
| 109 | */ |
| 110 | |
| 111 | define(SYNC_THREAD_OTHER,` |
| 112 | setx ASI_CMP_CORE_RUNNING_W1C, $2, $3 |
| 113 | set 0x1, $2 |
| 114 | sllx $2, $1, $2 |
| 115 | stxa $2, [$3] ASI_CMP_CORE |
| 116 | membar #Sync |
| 117 | ') |
| 118 | |
| 119 | |
| 120 | |
| 121 | /* following endif needs to be at very bottom -- 6/7/05 */ |
| 122 | #endif |