2 * Copyright 2015, Michael Neuling, IBM Corp.
3 * Licensed under GPLv2.
5 * Original: Michael Neuling 3/4/2014
6 * Modified: Rashmica Gupta 8/12/2015
8 * Check if any of the Transaction Memory SPRs get corrupted.
9 * - TFIAR - stores address of location of transaction failure
10 * - TFHAR - stores address of software failure handler (if transaction
12 * - TEXASR - lots of info about the transacion(s)
14 * (1) create more threads than cpus
16 * (a) set TFIAR and TFHAR a unique value
17 * (b) loop for awhile, continually checking to see if
18 * either register has been corrupted.
21 * (a) begin transaction
22 * (b) abort transaction
23 * (c) check TEXASR to see if FS has been corrupted
37 int num_loops = 10000;
40 void tfiar_tfhar(void *in)
43 unsigned long tfhar, tfhar_rd, tfiar, tfiar_rd;
47 cpu = (unsigned long)in >> 1;
48 CPU_SET(cpu, &cpuset);
49 sched_setaffinity(0, sizeof(cpuset), &cpuset);
51 /* TFIAR: Last bit has to be high so userspace can read register */
52 tfiar = ((unsigned long)in) + 1;
54 mtspr(SPRN_TFIAR, tfiar);
56 /* TFHAR: Last two bits are reserved */
57 tfhar = ((unsigned long)in);
60 mtspr(SPRN_TFHAR, tfhar);
62 for (i = 0; i < num_loops; i++) {
63 tfhar_rd = mfspr(SPRN_TFHAR);
64 tfiar_rd = mfspr(SPRN_TFIAR);
65 if ( (tfhar != tfhar_rd) || (tfiar != tfiar_rd) ) {
78 for (i = 0; i < num_loops; i++) {
89 /* Check the TEXASR */
90 result = mfspr(SPRN_TEXASR);
91 if ((result & TEXASR_FS) == 0) {
105 SKIP_IF(!have_htm());
107 /* To cause some context switching */
108 thread_num = 10 * sysconf(_SC_NPROCESSORS_ONLN);
110 /* Test TFIAR and TFHAR */
111 for (i = 0 ; i < thread_num ; i += 2){
112 if (pthread_create(&thread, NULL, (void*)tfiar_tfhar, (void *)i))
115 if (pthread_join(thread, NULL) != 0)
119 for (i = 0 ; i < thread_num ; i++){
120 if (pthread_create(&thread, NULL, (void*)texasr, (void *)i))
123 if (pthread_join(thread, NULL) != 0)
132 int main(int argc, char *argv[])
135 if (strcmp(argv[1], "-h") == 0) {
136 printf("Syntax:\t [<num loops>]\n");
139 num_loops = atoi(argv[1]);
142 return test_harness(test_tmspr, "tm_tmspr");