aboutsummaryrefslogtreecommitdiffstats
path: root/arch/sparc/kernel/dtlb_miss.S
diff options
context:
space:
mode:
authorRusty Russell <rusty@rustcorp.com.au>2008-12-31 07:35:57 -0500
committerRusty Russell <rusty@rustcorp.com.au>2008-12-31 07:35:57 -0500
commit2ca1a615835d9f4990f42102ab1f2ef434e7e89c (patch)
tree726cf3d5f29a6c66c44e4bd68e7ebed2fd83d059 /arch/sparc/kernel/dtlb_miss.S
parente12f0102ac81d660c9f801d0a0e10ccf4537a9de (diff)
parent6a94cb73064c952255336cc57731904174b2c58f (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: arch/x86/kernel/io_apic.c
Diffstat (limited to 'arch/sparc/kernel/dtlb_miss.S')
-rw-r--r--arch/sparc/kernel/dtlb_miss.S39
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/sparc/kernel/dtlb_miss.S b/arch/sparc/kernel/dtlb_miss.S
new file mode 100644
index 000000000000..09a6a15a7105
--- /dev/null
+++ b/arch/sparc/kernel/dtlb_miss.S
@@ -0,0 +1,39 @@
1/* DTLB ** ICACHE line 1: Context 0 check and TSB load */
2 ldxa [%g0] ASI_DMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer
3 ldxa [%g0] ASI_DMMU, %g6 ! Get TAG TARGET
4 srlx %g6, 48, %g5 ! Get context
5 sllx %g6, 22, %g6 ! Zero out context
6 brz,pn %g5, kvmap_dtlb ! Context 0 processing
7 srlx %g6, 22, %g6 ! Delay slot
8 TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry
9 cmp %g4, %g6 ! Compare TAG
10
11/* DTLB ** ICACHE line 2: TSB compare and TLB load */
12 bne,pn %xcc, tsb_miss_dtlb ! Miss
13 mov FAULT_CODE_DTLB, %g3
14 stxa %g5, [%g0] ASI_DTLB_DATA_IN ! Load TLB
15 retry ! Trap done
16 nop
17 nop
18 nop
19 nop
20
21/* DTLB ** ICACHE line 3: */
22 nop
23 nop
24 nop
25 nop
26 nop
27 nop
28 nop
29 nop
30
31/* DTLB ** ICACHE line 4: */
32 nop
33 nop
34 nop
35 nop
36 nop
37 nop
38 nop
39 nop