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Enable cache on the 4000/VLC.

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mhitch 2000-04-18 16:28:04 +00:00
parent a90cf56cda
commit a218b8543c
1 changed files with 11 additions and 22 deletions
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33
sys/arch/vax/vax/ka48.c
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@ -101,33 +101,22 @@ void
ka48_cache_enable()
{
int i, *tmp;
return; /*** not yet MK-990306 ***/
long *par_ctl = (long *)KA48_PARCTL;
/* Disable caches */
*(int *)KA48_CCR &= ~CCR_SPECIO;/* secondary */
mtpr(PCSTS_FLUSH, PR_PCSTS); /* primary */
*(int *)KA48_BWF0 &= ~BWF0_FEN; /* invalidate filter */
/* Disable cache */
mtpr(0, PR_CADR); /* disable */
*par_ctl &= ~KA48_PARCTL_INVENA; /* clear ? invalid enable */
mtpr(2, PR_CADR); /* flush */
/* Clear caches */
tmp = (void *)KA48_INVFLT; /* inv filter */
for (i = 0; i < 32768; i++)
for (i = 0; i < KA48_INVFLTSZ / sizeof(int); i++)
tmp[i] = 0;
/* Write valid parity to all primary cache entries */
for (i = 0; i < 256; i++) {
mtpr(i << 3, PR_PCIDX);
mtpr(PCTAG_PARITY, PR_PCTAG);
}
/* Secondary cache */
tmp = (void *)KA48_TAGST;
for (i = 0; i < KA48_TAGSZ*2; i+=2)
tmp[i] = 0;
/* Enable cache */
*(int *)KA48_BWF0 |= BWF0_FEN; /* invalidate filter */
mtpr(PCSTS_ENABLE, PR_PCSTS);
*(int *)KA48_CCR = CCR_SPECIO | CCR_CENA;
*par_ctl |= KA48_PARCTL_INVENA; /* Enable ???? */
mtpr(4, PR_CADR); /* enable cache */
*par_ctl |= (KA48_PARCTL_AGS | /* AGS? */
KA48_PARCTL_NPEN | /* N? Parity Enable */
KA48_PARCTL_CPEN); /* Cpu parity enable */
}
void