blob: 5a5d92482e8d014c38d0be6c49880347bef225ad [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001/* SPDX-License-Identifier: GPL-2.0 */
David S. Miller74bf4312006-01-31 18:29:18 -08002/* ITLB ** ICACHE line 1: Context 0 check and TSB load */
3 ldxa [%g0] ASI_IMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer
4 ldxa [%g0] ASI_IMMU, %g6 ! Get TAG TARGET
5 srlx %g6, 48, %g5 ! Get context
David S. Miller8b234272006-02-17 18:01:02 -08006 sllx %g6, 22, %g6 ! Zero out context
David S. Miller74bf4312006-01-31 18:29:18 -08007 brz,pn %g5, kvmap_itlb ! Context 0 processing
David S. Miller8b234272006-02-17 18:01:02 -08008 srlx %g6, 22, %g6 ! Delay slot
David S. Miller517af332006-02-01 15:55:21 -08009 TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry
David S. Miller74bf4312006-01-31 18:29:18 -080010 cmp %g4, %g6 ! Compare TAG
David S. Miller74bf4312006-01-31 18:29:18 -080011
12/* ITLB ** ICACHE line 2: TSB compare and TLB load */
13 bne,pn %xcc, tsb_miss_itlb ! Miss
14 mov FAULT_CODE_ITLB, %g3
David S. Miller67929292007-05-27 20:24:47 -070015 sethi %hi(_PAGE_EXEC_4U), %g4
16 andcc %g5, %g4, %g0 ! Executable?
David S. Miller74bf4312006-01-31 18:29:18 -080017 be,pn %xcc, tsb_do_fault
18 nop ! Delay slot, fill me
David S. Miller45f791e2006-03-01 22:42:18 -080019 stxa %g5, [%g0] ASI_ITLB_DATA_IN ! Load TLB
20 retry ! Trap done
David S. Miller74bf4312006-01-31 18:29:18 -080021
22/* ITLB ** ICACHE line 3: */
David S. Miller45f791e2006-03-01 22:42:18 -080023 nop
24 nop
David S. Miller74bf4312006-01-31 18:29:18 -080025 nop
26 nop
27 nop
28 nop
29 nop
30 nop
31
32/* ITLB ** ICACHE line 4: */
33 nop
34 nop
35 nop
36 nop
37 nop
38 nop
39 nop
40 nop