1b2441318SGreg Kroah-Hartman/* SPDX-License-Identifier: GPL-2.0 */ 2a88b5ba8SSam Ravnborg/* DTLB ** ICACHE line 1: Context 0 check and TSB load */ 3a88b5ba8SSam Ravnborg ldxa [%g0] ASI_DMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer 4a88b5ba8SSam Ravnborg ldxa [%g0] ASI_DMMU, %g6 ! Get TAG TARGET 5a88b5ba8SSam Ravnborg srlx %g6, 48, %g5 ! Get context 6a88b5ba8SSam Ravnborg sllx %g6, 22, %g6 ! Zero out context 7a88b5ba8SSam Ravnborg brz,pn %g5, kvmap_dtlb ! Context 0 processing 8a88b5ba8SSam Ravnborg srlx %g6, 22, %g6 ! Delay slot 9a88b5ba8SSam Ravnborg TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry 10a88b5ba8SSam Ravnborg cmp %g4, %g6 ! Compare TAG 11a88b5ba8SSam Ravnborg 12a88b5ba8SSam Ravnborg/* DTLB ** ICACHE line 2: TSB compare and TLB load */ 13a88b5ba8SSam Ravnborg bne,pn %xcc, tsb_miss_dtlb ! Miss 14a88b5ba8SSam Ravnborg mov FAULT_CODE_DTLB, %g3 15a88b5ba8SSam Ravnborg stxa %g5, [%g0] ASI_DTLB_DATA_IN ! Load TLB 16a88b5ba8SSam Ravnborg retry ! Trap done 17a88b5ba8SSam Ravnborg nop 18a88b5ba8SSam Ravnborg nop 19a88b5ba8SSam Ravnborg nop 20a88b5ba8SSam Ravnborg nop 21a88b5ba8SSam Ravnborg 22a88b5ba8SSam Ravnborg/* DTLB ** ICACHE line 3: */ 23a88b5ba8SSam Ravnborg nop 24a88b5ba8SSam Ravnborg nop 25a88b5ba8SSam Ravnborg nop 26a88b5ba8SSam Ravnborg nop 27a88b5ba8SSam Ravnborg nop 28a88b5ba8SSam Ravnborg nop 29a88b5ba8SSam Ravnborg nop 30a88b5ba8SSam Ravnborg nop 31a88b5ba8SSam Ravnborg 32a88b5ba8SSam Ravnborg/* DTLB ** ICACHE line 4: */ 33a88b5ba8SSam Ravnborg nop 34a88b5ba8SSam Ravnborg nop 35a88b5ba8SSam Ravnborg nop 36a88b5ba8SSam Ravnborg nop 37a88b5ba8SSam Ravnborg nop 38a88b5ba8SSam Ravnborg nop 39a88b5ba8SSam Ravnborg nop 40a88b5ba8SSam Ravnborg nop 41