Line 36... |
Line 36... |
int i;
|
int i;
|
unsigned long tagaddr;
|
unsigned long tagaddr;
|
unsigned long vpn, ppn;
|
unsigned long vpn, ppn;
|
extern int mem_cycles;
|
extern int mem_cycles;
|
|
|
if (!(mfspr(SPR_SR) & SPR_SR_DME) || !testsprbits(SPR_UPR, SPR_UPR_DMP))
|
if (!(mfspr(SPR_SR) & SPR_SR_DME) || !testsprbits(SPR_UPR, SPR_UPR_DMP)) {
|
|
data_ci = (virtaddr >= 0x80000000);
|
return virtaddr;
|
return virtaddr;
|
|
}
|
|
|
/* Which set to check out? */
|
/* Which set to check out? */
|
set = (virtaddr / config.dmmu.pagesize) % config.dmmu.nsets;
|
set = (virtaddr / config.dmmu.pagesize) % config.dmmu.nsets;
|
tagaddr = (virtaddr / config.dmmu.pagesize) / config.dmmu.nsets;
|
tagaddr = (virtaddr / config.dmmu.pagesize) / config.dmmu.nsets;
|
vpn = virtaddr / (config.dmmu.pagesize * config.dmmu.nsets);
|
vpn = virtaddr / (config.dmmu.pagesize * config.dmmu.nsets);
|
Line 72... |
Line 74... |
for (i = 0; i < config.dmmu.nways; i++)
|
for (i = 0; i < config.dmmu.nways; i++)
|
if (testsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU))
|
if (testsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU))
|
setsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU, getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU) - 1);
|
setsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU, getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU) - 1);
|
setsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_LRU, config.dmmu.ustates - 1);
|
setsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_LRU, config.dmmu.ustates - 1);
|
|
|
|
/* Check if page is cache inhibited */
|
|
data_ci = (mfspr(SPR_DTLBTR_BASE(way) + set) & SPR_DTLBTR_CI) == SPR_DTLBTR_CI;
|
|
|
mem_cycles += config.dmmu.hitdelay;
|
mem_cycles += config.dmmu.hitdelay;
|
ppn = mfspr(SPR_DTLBTR_BASE(way) + set) / config.dmmu.pagesize;
|
ppn = mfspr(SPR_DTLBTR_BASE(way) + set) / config.dmmu.pagesize;
|
return (ppn * config.dmmu.pagesize) + (virtaddr % config.dmmu.pagesize);
|
return (ppn * config.dmmu.pagesize) + (virtaddr % config.dmmu.pagesize);
|
}
|
}
|
else { /* No, we didn't. */
|
else { /* No, we didn't. */
|