diff options
| author | Sam Ravnborg <sam@ravnborg.org> | 2008-12-03 03:11:52 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-12-04 09:17:21 -0800 |
| commit | a88b5ba8bd8ac18aad65ee6c6a254e2e74876db3 (patch) | |
| tree | eb3d0ffaf53c3f7ec6083752c2097cecd1cb892a /arch/sparc/kernel/itlb_miss.S | |
| parent | d670bd4f803c8b646acd20f3ba21e65458293faf (diff) | |
sparc,sparc64: unify kernel/
o Move all files from sparc64/kernel/ to sparc/kernel
- rename as appropriate
o Update sparc/Makefile to the changes
o Update sparc/kernel/Makefile to include the sparc64 files
NOTE: This commit changes link order on sparc64!
Link order had to change for either of sparc32 and sparc64.
And assuming sparc64 see more testing than sparc32 change link
order on sparc64 where issues will be caught faster.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/itlb_miss.S')
| -rw-r--r-- | arch/sparc/kernel/itlb_miss.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/sparc/kernel/itlb_miss.S b/arch/sparc/kernel/itlb_miss.S new file mode 100644 index 000000000000..5a8377b54955 --- /dev/null +++ b/arch/sparc/kernel/itlb_miss.S @@ -0,0 +1,39 @@ +/* ITLB ** ICACHE line 1: Context 0 check and TSB load */ + ldxa [%g0] ASI_IMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer + ldxa [%g0] ASI_IMMU, %g6 ! Get TAG TARGET + srlx %g6, 48, %g5 ! Get context + sllx %g6, 22, %g6 ! Zero out context + brz,pn %g5, kvmap_itlb ! Context 0 processing + srlx %g6, 22, %g6 ! Delay slot + TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry + cmp %g4, %g6 ! Compare TAG + +/* ITLB ** ICACHE line 2: TSB compare and TLB load */ + bne,pn %xcc, tsb_miss_itlb ! Miss + mov FAULT_CODE_ITLB, %g3 + sethi %hi(_PAGE_EXEC_4U), %g4 + andcc %g5, %g4, %g0 ! Executable? + be,pn %xcc, tsb_do_fault + nop ! Delay slot, fill me + stxa %g5, [%g0] ASI_ITLB_DATA_IN ! Load TLB + retry ! Trap done + +/* ITLB ** ICACHE line 3: */ + nop + nop + nop + nop + nop + nop + nop + nop + +/* ITLB ** ICACHE line 4: */ + nop + nop + nop + nop + nop + nop + nop + nop |