| Line 31... |
Line 31... |
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unsigned long dmmu_translate(unsigned long virtaddr)
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unsigned long dmmu_translate(unsigned long virtaddr)
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{
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{
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unsigned long phyaddr = dmmu_simulate_tlb(virtaddr);
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unsigned long phyaddr = dmmu_simulate_tlb(virtaddr);
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|
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printf("DMMU translate(%x) = %x\n", virtaddr, phyaddr);
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/* printf("DMMU translate(%x) = %x\n", virtaddr, phyaddr);*/
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return phyaddr;
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return phyaddr;
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}
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}
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/* Number of DTLB sets used (power of 2, max is 256) */
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/* Number of DTLB sets used (power of 2, max is 256) */
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#define DTLB_SETS 16
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#define DTLB_SETS 16
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| Line 47... |
Line 47... |
#define DTLB_WAYS 2
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#define DTLB_WAYS 2
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/* Number of usage states (2, 3, 4 etc., max is 4). */
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/* Number of usage states (2, 3, 4 etc., max is 4). */
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#define DTLB_USTATES 2
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#define DTLB_USTATES 2
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/* Don't change. Defined by mask of PPN/VPN bits in TLB. */
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#define MIN_PG_SIZE 1024
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void dtlb_info()
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void dtlb_info()
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{
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{
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printf("Data MMU %dKB: ", DTLB_SETS * DTLB_ENTRY_SIZE * DTLB_WAYS / 1024);
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printf("Data MMU %dKB: ", DTLB_SETS * DTLB_ENTRY_SIZE * DTLB_WAYS / 1024);
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printf("%d ways, %d sets, entry size %d bytes\n", DTLB_WAYS, DTLB_SETS, DTLB_ENTRY_SIZE);
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printf("%d ways, %d sets, entry size %d bytes\n", DTLB_WAYS, DTLB_SETS, DTLB_ENTRY_SIZE);
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}
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}
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| Line 80... |
Line 77... |
if ((start_set >= 0) && (start_set < end_set))
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if ((start_set >= 0) && (start_set < end_set))
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end_set = start_set + 1;
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end_set = start_set + 1;
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else
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else
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start_set = 0;
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start_set = 0;
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printf("\nDMMU: ");
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/* Scan set(s) and way(s). */
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/* Scan set(s) and way(s). */
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for (set = start_set; set < end_set; set++) {
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for (set = start_set; set < end_set; set++) {
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printf("\nSet %x: ", set);
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printf("\nSet %x: ", set);
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for (way = 0; way < DTLB_WAYS; way++) {
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for (way = 0; way < DTLB_WAYS; way++) {
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printf(" way %d: ", way);
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printf(" way %d: ", way);
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printf("vpn %x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_VPN));
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printf("vpn=%x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_VPN));
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printf("lru %x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_LRU));
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printf("lru=%x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_LRU));
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printf("pl1 %x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_PL1));
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printf("pl1=%x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_PL1));
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printf("v %x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_V));
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printf("v=%x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_V));
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printf("a %x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBTR_A));
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printf("d %x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBTR_D));
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printf("a=%x ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_A));
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printf("ure %x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBTR_URE));
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printf("d=%x ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_D));
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printf("uwe %x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBTR_UWE));
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printf("ure=%x ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_URE));
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printf("sre %x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBTR_SRE));
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printf("uwe=%x ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_UWE));
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printf("swe %x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBTR_SWE));
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printf("sre=%x ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_SRE));
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printf("ppn %x ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBTR_PPN));
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printf("swe=%x ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_SWE));
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if (way > 0)
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printf("ppn=%x ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_PPN));
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printf("\n");
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}
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}
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}
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}
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printf("\n");
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printf("\n");
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}
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}
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| Line 116... |
Line 113... |
return virtaddr;
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return virtaddr;
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/* Which set to check out? */
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/* Which set to check out? */
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set = (virtaddr / PAGE_SIZE) % DTLB_SETS;
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set = (virtaddr / PAGE_SIZE) % DTLB_SETS;
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tagaddr = (virtaddr / PAGE_SIZE) / DTLB_SETS;
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tagaddr = (virtaddr / PAGE_SIZE) / DTLB_SETS;
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vpn = virtaddr / MIN_PG_SIZE;
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vpn = virtaddr / PAGE_SIZE;
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/* Scan all ways and try to find a matching way. */
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/* Scan all ways and try to find a matching way. */
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for (i = 0; i < DTLB_WAYS; i++)
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for (i = 0; i < DTLB_WAYS; i++)
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if ((getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_VPN) == vpn) &&
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if ((getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_VPN) == vpn) &&
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getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_V))
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getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_V))
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| Line 135... |
Line 132... |
for (i = 0; i < DTLB_WAYS; i++)
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for (i = 0; i < DTLB_WAYS; i++)
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if (getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU))
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if (getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU))
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setsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU, getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU) - 1);
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setsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU, getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU) - 1);
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setsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_LRU, DTLB_USTATES - 1);
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setsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_LRU, DTLB_USTATES - 1);
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|
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return getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_PPN) * MIN_PG_SIZE + (virtaddr % PAGE_SIZE);
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return getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_PPN) * PAGE_SIZE + (virtaddr % PAGE_SIZE);
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}
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}
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else { /* No, we didn't. */
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else { /* No, we didn't. */
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int minlru = DTLB_USTATES - 1;
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int minlru = DTLB_USTATES - 1;
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int minway = 0;
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int minway = 0;
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| Line 157... |
Line 154... |
setsprbits(SPR_DTLBTR_BASE(minway) + set, SPR_DTLBTR_PPN, vpn); /* 1 to 1 */
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setsprbits(SPR_DTLBTR_BASE(minway) + set, SPR_DTLBTR_PPN, vpn); /* 1 to 1 */
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setsprbits(SPR_DTLBMR_BASE(minway) + set, SPR_DTLBMR_V, 1);
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setsprbits(SPR_DTLBMR_BASE(minway) + set, SPR_DTLBMR_V, 1);
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#endif
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#endif
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except_handle(EXCEPT_DTLBMISS, virtaddr);
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except_handle(EXCEPT_DTLBMISS, virtaddr);
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/* if tlb refill implemented in HW */
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/* if tlb refill implemented in HW */
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/* return getsprbits(SPR_DTLBTR_BASE(minway) + set, SPR_DTLBTR_PPN) * MIN_PG_SIZE + (virtaddr % PAGE_SIZE); */
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/* return getsprbits(SPR_DTLBTR_BASE(minway) + set, SPR_DTLBTR_PPN) * PAGE_SIZE + (virtaddr % PAGE_SIZE); */
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return 0;
|
return 0;
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}
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}
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}
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}
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No newline at end of file
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No newline at end of file
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