int prefetch_randomise_dscr(unsigned long long random_number, unsigned int what, unsigned int thread_no) {
/*
Structure of DSCR
+------------+-------+-------+-------+-------+-------+-------+-----------+-------+-------+-------+-------+-------+
| // | SWTE | HWTE | STE | LTE | SWUE | HWUE | UNIT CNT | URG | LSD | SNSE | SSE | DPFD |
+------------+-------+-------+-------+-------+-------+-------+-----------+-------+-------+-------+-------+-------+
0 3839 40 41 42 43 44 45 5455 5758 59 60 61 63
*/
unsigned long long local_random_number;
unsigned long long read_dscr;
int rc = 0;
mfspr_dscr(&read_dscr);
th_array[thread_no].read_dscr_val = read_dscr;
switch ( what ) {
case DSCR_RANDOM:
mtspr_dscr(random_number);
th_array[thread_no].written_dscr_val = random_number;
rc = 0;
break;
case DSCR_LSDISABLE:
local_random_number = random_number | (0x1<<5);
mtspr_dscr(random_number);
th_array[thread_no].written_dscr_val = random_number;
#ifdef DEBUG
printf("[%d] Original random number = 0x%x , After setting 58th bit = 0x%x\n",__LINE__,random_number,local_random_number);
#endif
rc = 0;
break;
case DSCR_DEFAULT:
break;
default:
sprintf(msg,"[%d] Wrong parameter = %d\n", __LINE__, what);
hxfmsg(&h_d, -1, HTX_HE_HARD_ERROR, msg);
rc = -1;
break;
}
/*sleep (1);*/
return rc;
}
int
paf_dsc_set(uint64_t dscr)
{
/* check whether DSCR support is available */
if (*dscr_support_mask == 0)
{
errno = ENOSYS;
return -1;
}
/* check whether the value to be set in DSCR is supported in this machine */
if ((dscr | *dscr_support_mask) != *dscr_support_mask)
{
DEBUG("Cannot set dscr 0x%" PRIx64 " (supported mask 0x%" PRIx64 ")", dscr, *dscr_support_mask);
errno = EINVAL;
return -1;
}
DEBUG("set 0x%" PRIx64, dscr);
mtspr_dscr(dscr_sprn, dscr);
return 0;
}