| 1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== |
| 3 | * |
| 4 | * OpenSPARC T2 Processor File: tso_n1_prod_cons1_pio.s |
| 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 | #define JBI_CONFIG |
| 39 | #define MAIN_PAGE_HV_ALSO |
| 40 | #define spinlock_addr_reg %o0 |
| 41 | #define data_base_reg %o1 |
| 42 | #define my_id_reg %o3 |
| 43 | #define test_reg %o4 |
| 44 | #define global_cnt_reg %o5 |
| 45 | #define tmp1 %l1 |
| 46 | |
| 47 | #define ITERATIONS 0x2 |
| 48 | |
| 49 | #include "hboot.s" |
| 50 | |
| 51 | .global main |
| 52 | |
| 53 | main: |
| 54 | ta T_CHANGE_HPRIV |
| 55 | nop |
| 56 | |
| 57 | setx spinlock_address, %l0, spinlock_addr_reg ! spinlock address |
| 58 | set ITERATIONS, global_cnt_reg ! |
| 59 | |
| 60 | th_fork(th_main,%l0) |
| 61 | |
| 62 | ! Some of the threads are producers, some are consumers |
| 63 | ! A pair of producer and consumer has the same ID. |
| 64 | !===================================================== |
| 65 | th_main_0: |
| 66 | add %g0, 0x8, my_id_reg ! this is my ID address |
| 67 | ba producer |
| 68 | nop |
| 69 | |
| 70 | th_main_1: |
| 71 | add %g0, 0x8, my_id_reg |
| 72 | ba consumer |
| 73 | nop |
| 74 | |
| 75 | th_main_2: |
| 76 | add %g0, 0x38, my_id_reg |
| 77 | ba producer |
| 78 | nop |
| 79 | !ba good_end |
| 80 | !nop |
| 81 | |
| 82 | th_main_3: |
| 83 | add %g0, 0x3c, my_id_reg |
| 84 | ba consumer |
| 85 | nop |
| 86 | !ba good_end |
| 87 | !nop |
| 88 | |
| 89 | th_main_4: |
| 90 | add %g0, 0x38, my_id_reg |
| 91 | ba consumer |
| 92 | nop |
| 93 | !ba good_end |
| 94 | !nop |
| 95 | |
| 96 | th_main_5: |
| 97 | add %g0, 0x3c, my_id_reg |
| 98 | ba producer |
| 99 | nop |
| 100 | !ba good_end |
| 101 | !nop |
| 102 | |
| 103 | th_main_6: |
| 104 | ba good_end |
| 105 | nop |
| 106 | |
| 107 | th_main_7: |
| 108 | ba good_end |
| 109 | nop |
| 110 | |
| 111 | !==================================================================================== |
| 112 | producer: |
| 113 | ld [spinlock_addr_reg + my_id_reg], test_reg ! try to acquire lock |
| 114 | tst test_reg ! did we get it? |
| 115 | be producer_gotlock |
| 116 | nop |
| 117 | ba producer |
| 118 | nop |
| 119 | |
| 120 | !==================================================================================== |
| 121 | consumer: |
| 122 | ld [spinlock_addr_reg + my_id_reg], test_reg ! try to acquire lock |
| 123 | sub test_reg, 0x55, %i1 ! code to end the test |
| 124 | tst %i1 |
| 125 | be good_end ! end the test |
| 126 | nop |
| 127 | sub test_reg, 0x1, %i1 ! code for available data |
| 128 | tst %i1 |
| 129 | be consumer_gotlock |
| 130 | nop |
| 131 | ba consumer |
| 132 | nop |
| 133 | |
| 134 | |
| 135 | !==================================================================================== |
| 136 | producer_gotlock: |
| 137 | set 0x60, %l0 |
| 138 | setx protected_area, tmp1, data_base_reg |
| 139 | producer_loop0: |
| 140 | st %g0, [data_base_reg + my_id_reg] ! clean up |
| 141 | add data_base_reg, 0x40, data_base_reg ! increment the address |
| 142 | deccc %l0 |
| 143 | bne producer_loop0 ! repeat |
| 144 | nop |
| 145 | |
| 146 | set 0x60, %l0 |
| 147 | setx protected_area, tmp1, data_base_reg |
| 148 | mov my_id_reg, %i1 |
| 149 | producer_loop1: |
| 150 | st %i1, [data_base_reg + my_id_reg] ! store my ID in there |
| 151 | add data_base_reg, 0x40, data_base_reg ! increment the address |
| 152 | add %i1, 1, %i1 |
| 153 | deccc %l0 |
| 154 | bne producer_loop1 ! repeat |
| 155 | nop |
| 156 | |
| 157 | deccc global_cnt_reg |
| 158 | be cleanup_and_finish |
| 159 | nop |
| 160 | add %g0, 1 , tmp1 |
| 161 | st tmp1, [spinlock_addr_reg + my_id_reg] ! data ready |
| 162 | ba producer |
| 163 | nop |
| 164 | |
| 165 | cleanup_and_finish: |
| 166 | add %g0, 0x55 , tmp1 |
| 167 | st tmp1, [spinlock_addr_reg + my_id_reg] ! finish the test |
| 168 | ba good_end |
| 169 | nop |
| 170 | |
| 171 | !==================================================================================== |
| 172 | consumer_gotlock: |
| 173 | set 0x60, %l0 |
| 174 | setx protected_area, tmp1, data_base_reg |
| 175 | mov my_id_reg, %i1 |
| 176 | consumer_loop1: |
| 177 | ld [data_base_reg + my_id_reg], %i2 ! load my ID in there |
| 178 | subcc %i2, %i1, %i2 |
| 179 | bne bad_end |
| 180 | nop |
| 181 | add data_base_reg, 0x40, data_base_reg ! increment the address |
| 182 | inc %i1 |
| 183 | deccc %l0 |
| 184 | bne consumer_loop1 ! repeat |
| 185 | nop |
| 186 | |
| 187 | st %g0, [spinlock_addr_reg+ my_id_reg] ! consumer ready |
| 188 | |
| 189 | ba consumer |
| 190 | nop |
| 191 | |
| 192 | good_end: |
| 193 | ta T_GOOD_TRAP |
| 194 | bad_end: |
| 195 | ta T_BAD_TRAP |
| 196 | |
| 197 | !========================== |
| 198 | |
| 199 | SECTION .MY_DATA0 DATA_VA=0xd0100000 |
| 200 | attr_data { |
| 201 | Name = .MY_DATA0, |
| 202 | VA= 0x0d0100000, |
| 203 | RA=0xc000000000, |
| 204 | PA=0xc000000000, |
| 205 | part_0_ctx_nonzero_tsb_config_0, |
| 206 | TTE_G=1, TTE_Context=0x44, TTE_V=1, TTE_Size=0, TTE_NFO=0, |
| 207 | TTE_IE=0, TTE_Soft2=0, TTE_Diag=0, TTE_Soft=0, |
| 208 | TTE_L=0, TTE_CP=0, TTE_CV=0, TTE_E=0, TTE_P=0, TTE_W=1 |
| 209 | } |
| 210 | |
| 211 | .data |
| 212 | |
| 213 | .global spinlock_address |
| 214 | spinlock_address: |
| 215 | .skip 0x1000 |
| 216 | |
| 217 | |
| 218 | SECTION .MY_DATA1 DATA_VA=0xd1110000 |
| 219 | attr_data { |
| 220 | Name = .MY_DATA1, |
| 221 | VA= 0x0d1110000, |
| 222 | RA=0xc200bee000, |
| 223 | PA=0xc200bee000, |
| 224 | part_0_ctx_nonzero_tsb_config_1, |
| 225 | TTE_G=1, TTE_Context=0x44, TTE_V=1, TTE_Size=0, TTE_NFO=0, |
| 226 | TTE_IE=0, TTE_Soft2=0, TTE_Diag=0, TTE_Soft=0, |
| 227 | TTE_L=0, TTE_CP=0, TTE_CV=0, TTE_E=0, TTE_P=0, TTE_W=1 |
| 228 | } |
| 229 | |
| 230 | .data |
| 231 | .global protected_area |
| 232 | protected_area: |
| 233 | .word 0xbeef |
| 234 | .skip 0x1000 |
| 235 | .word 0xbeef |
| 236 | .end |