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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 |