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authorAkira Takeuchi <takeuchi.akr@jp.panasonic.com>2010-10-27 20:28:50 +0400
committerDavid Howells <dhowells@redhat.com>2010-10-27 20:28:50 +0400
commitdccbf4853a31a3f774f38c402209d23388d99f52 (patch)
treeec13031e27ee4ee5687dc2e178e6edcf86227e4c /arch/mn10300/mm
parenta9bc60ebfd5766ce5f6095d0fed3d9978990122f (diff)
downloadlinux-dccbf4853a31a3f774f38c402209d23388d99f52.tar.xz
MN10300: Use the [ID]PTEL2 registers rather than [ID]PTEL for TLB control
Use the [ID]PTEL2 registers rather than [ID]PTEL for TLB control as the bits are a more suitable layout. Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com> Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com> Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'arch/mn10300/mm')
-rw-r--r--arch/mn10300/mm/tlb-mn10300.S27
1 files changed, 19 insertions, 8 deletions
diff --git a/arch/mn10300/mm/tlb-mn10300.S b/arch/mn10300/mm/tlb-mn10300.S
index ccf622999a5b..b9940177d81b 100644
--- a/arch/mn10300/mm/tlb-mn10300.S
+++ b/arch/mn10300/mm/tlb-mn10300.S
@@ -61,10 +61,16 @@ ENTRY(itlb_miss)
btst _PAGE_VALID,d2
beq itlb_miss_fault # jump if doesn't point to a page
# (might be a swap id)
+#if ((_PAGE_ACCESSED & 0xffffff00) == 0)
bset _PAGE_ACCESSED,(0,a2)
- and ~(xPTEL_UNUSED1|xPTEL_UNUSED2),d2
+#elif ((_PAGE_ACCESSED & 0xffff00ff) == 0)
+ bset +(_PAGE_ACCESSED >> 8),(1,a2)
+#else
+#error "_PAGE_ACCESSED value is out of range"
+#endif
+ and ~xPTEL2_UNUSED1,d2
itlb_miss_set:
- mov d2,(IPTEL) # change the TLB
+ mov d2,(IPTEL2) # change the TLB
#ifdef CONFIG_GDBSTUB
movm (sp),[d2,d3,a2]
#endif
@@ -118,10 +124,16 @@ ENTRY(dtlb_miss)
btst _PAGE_VALID,d2
beq dtlb_miss_fault # jump if doesn't point to a page
# (might be a swap id)
+#if ((_PAGE_ACCESSED & 0xffffff00) == 0)
bset _PAGE_ACCESSED,(0,a2)
- and ~(xPTEL_UNUSED1|xPTEL_UNUSED2),d2
+#elif ((_PAGE_ACCESSED & 0xffff00ff) == 0)
+ bset +(_PAGE_ACCESSED >> 8),(1,a2)
+#else
+#error "_PAGE_ACCESSED value is out of range"
+#endif
+ and ~xPTEL2_UNUSED1,d2
dtlb_miss_set:
- mov d2,(DPTEL) # change the TLB
+ mov d2,(DPTEL2) # change the TLB
#ifdef CONFIG_GDBSTUB
movm (sp),[d2,d3,a2]
#endif
@@ -156,13 +168,12 @@ ENTRY(itlb_aerror)
or 0x00010000,d1 # it's an instruction fetch
# determine the page address
- mov (IPTEU),a2
- mov a2,d0
+ mov (IPTEU),d0
and PAGE_MASK,d0
mov d0,(12,sp)
clr d0
- mov d0,(IPTEL)
+ mov d0,(IPTEL2)
or EPSW_IE,epsw
mov fp,d0
@@ -199,7 +210,7 @@ ENTRY(dtlb_aerror)
mov d0,(12,sp)
clr d0
- mov d0,(DPTEL)
+ mov d0,(DPTEL2)
or EPSW_IE,epsw
mov fp,d0