5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
41 lines
786 B
ArmAsm
41 lines
786 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/* DTLB ** ICACHE line 1: Context 0 check and TSB load */
|
|
ldxa [%g0] ASI_DMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer
|
|
ldxa [%g0] ASI_DMMU, %g6 ! Get TAG TARGET
|
|
srlx %g6, 48, %g5 ! Get context
|
|
sllx %g6, 22, %g6 ! Zero out context
|
|
brz,pn %g5, kvmap_dtlb ! Context 0 processing
|
|
srlx %g6, 22, %g6 ! Delay slot
|
|
TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry
|
|
cmp %g4, %g6 ! Compare TAG
|
|
|
|
/* DTLB ** ICACHE line 2: TSB compare and TLB load */
|
|
bne,pn %xcc, tsb_miss_dtlb ! Miss
|
|
mov FAULT_CODE_DTLB, %g3
|
|
stxa %g5, [%g0] ASI_DTLB_DATA_IN ! Load TLB
|
|
retry ! Trap done
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
|
|
/* DTLB ** ICACHE line 3: */
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
|
|
/* DTLB ** ICACHE line 4: */
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|