Changeset 70 for trunk

Timestamp:

Aug 3, 2010, 10:37:39 PM (14 years ago)

Author:

bouyer

Message:

Check/update the dirty bit on SC too

File:

• trunk/modules/vci_cc_vcache_wrapper2_v1/caba/source/src/vci_cc_vcache_wrapper2_v1.cpp (modified) (1 diff)

trunk/modules/vci_cc_vcache_wrapper2_v1/caba/source/src/vci_cc_vcache_wrapper2_v1.cpp

@@ -2680 +2680 @@
                             else 
                             {
-                                r_dcache_unc_req = true;
-                                r_dcache_fsm = DCACHE_UNC_WAIT;
-                                m_cpt_unc_read++;
-                                m_cost_unc_read_frz++;
+                                if (dreq.type == iss_t::DATA_SC &&
+                                    (r_mmu_mode.read() & DATA_TLB_MASK) &&
+                                    !dcache_pte_info.d)
+                                {
+                                    /* dirty bit update */
+                                    m_cpt_data_tlb_update_dirty++;
+                                    m_cost_data_tlb_update_dirty_frz++;
+                                    if ( dcache_tlb.getpagesize(dcache_tlb_way, dcache_tlb_set) )       // 2M page size, one level page table 
+                                    {
+                                        r_dcache_pte_update = dcache_tlb.getpte(dcache_tlb_way, dcache_tlb_set) | PTE_D_MASK;
+                                        r_dcache_tlb_paddr = (paddr_t)r_mmu_ptpr << (INDEX1_NBITS+2) | (paddr_t)((dreq.addr>>PAGE_M_NBITS)<<2);
+                                        r_dcache_tlb_ll_dirty_req = true;
+                                        r_dcache_fsm = DCACHE_LL_DIRTY_WAIT;
+                                    }
+                                    else        // 4k page size, two levels page table 
+                                    {   
+                                        if (dcache_hit_p) 
+                                        {
+                                            r_dcache_pte_update = dcache_tlb.getpte(dcache_tlb_way, dcache_tlb_set) | PTE_D_MASK;
+                                            r_dcache_tlb_paddr = (paddr_t)r_dcache_ptba_save | (paddr_t)(((dreq.addr&PTD_ID2_MASK)>>PAGE_K_NBITS) << 3);
+                                            r_dcache_tlb_ll_dirty_req = true;
+                                            r_dcache_fsm = DCACHE_LL_DIRTY_WAIT;
+                                        }
+                                        else    // get PTBA to calculate the physical address of PTE
+                                        {
+                                            r_dcache_pte_update = dcache_tlb.getpte(dcache_tlb_way, dcache_tlb_set) | PTE_D_MASK;
+                                            r_dcache_tlb_paddr = (paddr_t)r_mmu_ptpr << (INDEX1_NBITS+2) | (paddr_t)((dreq.addr>>PAGE_M_NBITS)<<2);
+                                            r_dcache_tlb_ptba_read = true;
+                                            r_dcache_fsm = DCACHE_DTLB1_READ_CACHE;
+                                        }
+                                    }
+                                }
+                                else
+                                {
+                                    r_dcache_unc_req = true;
+                                    r_dcache_fsm = DCACHE_UNC_WAIT;
+                                    m_cpt_unc_read++;
+                                    m_cost_unc_read_frz++;
+                                }
                             }
                         }