| 0,0 → 1,59 |
|---|
| #include <arch/mm/vhpt.h> |
| #include <mm/frame.h> |
| #include <print.h> |
| |
| |
| static vhpt_entry_t* vhpt_base; |
| |
| __address vhpt_set_up(void) |
| { |
| vhpt_base=(vhpt_entry_t*) PA2KA(PFN2ADDR(frame_alloc(VHPT_WIDTH-FRAME_WIDTH,FRAME_KA))); |
| if(!vhpt_base) panic("Kernel configured with VHPT but no memory for table."); |
| vhpt_invalidate_all(); |
| return (__address) vhpt_base; |
| } |
| |
| |
| void vhpt_mapping_insert(__address va, asid_t asid, tlb_entry_t entry) |
| { |
| region_register rr_save, rr; |
| index_t vrn; |
| rid_t rid; |
| __u64 tag; |
| |
| vhpt_entry_t *ventry; |
| |
| |
| vrn = va >> VRN_SHIFT; |
| rid = ASID2RID(asid, vrn); |
| |
| rr_save.word = rr_read(vrn); |
| rr.word = rr_save.word; |
| rr.map.rid = rid; |
| rr_write(vrn, rr.word); |
| srlz_i(); |
| |
| ventry = (vhpt_entry_t *) thash(va); |
| tag = ttag(va); |
| rr_write(vrn, rr_save.word); |
| srlz_i(); |
| srlz_d(); |
| |
| ventry->word[0]=entry.word[0]; |
| ventry->word[1]=entry.word[1]; |
| ventry->present.tag.tag_word = tag; |
| |
| |
| } |
| |
| void vhpt_invalidate_all() |
| { |
| memsetb((__address)vhpt_base,1<<VHPT_WIDTH,0); |
| } |
| |
| void vhpt_invalidate_asid(asid_t asid) |
| { |
| vhpt_invalidate_all(); |
| } |
| |
| |