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[SPARC64]: Preserve nucleus ctx page size during TLB flushes.

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Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2005-08-30 20:21:34 -07:00
parent 3c2cafaf50
commit 2ef27778a2
1 changed files with 25 additions and 14 deletions
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39
arch/sparc64/mm/ultra.S
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@ -10,6 +10,7 @@
#include <asm/page.h>
#include <asm/spitfire.h>
#include <asm/mmu_context.h>
#include <asm/mmu.h>
#include <asm/pil.h>
#include <asm/head.h>
#include <asm/thread_info.h>
@ -45,6 +46,8 @@ __flush_tlb_mm: /* %o0=(ctx & TAG_CONTEXT_BITS), %o1=SECONDARY_CONTEXT */
nop
nop
nop
nop
nop
.align 32
.globl __flush_tlb_pending
@ -73,6 +76,9 @@ __flush_tlb_pending:
retl
wrpr %g7, 0x0, %pstate
nop
nop
nop
nop
.align 32
.globl __flush_tlb_kernel_range
@ -224,16 +230,8 @@ __update_mmu_cache: /* %o0=hw_context, %o1=address, %o2=pte, %o3=fault_code */
or %o5, %o0, %o5
ba,a,pt %xcc, __prefill_itlb
/* Cheetah specific versions, patched at boot time.
*
* This writes of the PRIMARY_CONTEXT register in this file are
* safe even on Cheetah+ and later wrt. the page size fields.
* The nucleus page size fields do not matter because we make
* no data references, and these instructions execute out of a
* locked I-TLB entry sitting in the fully assosciative I-TLB.
* This sequence should also never trap.
*/
__cheetah_flush_tlb_mm: /* 15 insns */
/* Cheetah specific versions, patched at boot time. */
__cheetah_flush_tlb_mm: /* 18 insns */
rdpr %pstate, %g7
andn %g7, PSTATE_IE, %g2
wrpr %g2, 0x0, %pstate
@ -241,6 +239,9 @@ __cheetah_flush_tlb_mm: /* 15 insns */
mov PRIMARY_CONTEXT, %o2
mov 0x40, %g3
ldxa [%o2] ASI_DMMU, %g2
srlx %g2, CTX_PGSZ1_NUC_SHIFT, %o1
sllx %o1, CTX_PGSZ1_NUC_SHIFT, %o1
or %o0, %o1, %o0 /* Preserve nucleus page size fields */
stxa %o0, [%o2] ASI_DMMU
stxa %g0, [%g3] ASI_DMMU_DEMAP
stxa %g0, [%g3] ASI_IMMU_DEMAP
@ -250,7 +251,7 @@ __cheetah_flush_tlb_mm: /* 15 insns */
retl
wrpr %g7, 0x0, %pstate
__cheetah_flush_tlb_pending: /* 23 insns */
__cheetah_flush_tlb_pending: /* 26 insns */
/* %o0 = context, %o1 = nr, %o2 = vaddrs[] */
rdpr %pstate, %g7
sllx %o1, 3, %o1
@ -259,6 +260,9 @@ __cheetah_flush_tlb_pending: /* 23 insns */
wrpr %g0, 1, %tl
mov PRIMARY_CONTEXT, %o4
ldxa [%o4] ASI_DMMU, %g2
srlx %g2, CTX_PGSZ1_NUC_SHIFT, %o3
sllx %o3, CTX_PGSZ1_NUC_SHIFT, %o3
or %o0, %o3, %o0 /* Preserve nucleus page size fields */
stxa %o0, [%o4] ASI_DMMU
1: sub %o1, (1 << 3), %o1
ldx [%o2 + %o1], %o3
@ -311,14 +315,14 @@ cheetah_patch_cachetlbops:
sethi %hi(__cheetah_flush_tlb_mm), %o1
or %o1, %lo(__cheetah_flush_tlb_mm), %o1
call cheetah_patch_one
mov 15, %o2
mov 18, %o2
sethi %hi(__flush_tlb_pending), %o0
or %o0, %lo(__flush_tlb_pending), %o0
sethi %hi(__cheetah_flush_tlb_pending), %o1
or %o1, %lo(__cheetah_flush_tlb_pending), %o1
call cheetah_patch_one
mov 23, %o2
mov 26, %o2
#ifdef DCACHE_ALIASING_POSSIBLE
sethi %hi(__flush_dcache_page), %o0
@ -352,9 +356,12 @@ cheetah_patch_cachetlbops:
.globl xcall_flush_tlb_mm
xcall_flush_tlb_mm:
mov PRIMARY_CONTEXT, %g2
mov 0x40, %g4
ldxa [%g2] ASI_DMMU, %g3
srlx %g3, CTX_PGSZ1_NUC_SHIFT, %g4
sllx %g4, CTX_PGSZ1_NUC_SHIFT, %g4
or %g5, %g4, %g5 /* Preserve nucleus page size fields */
stxa %g5, [%g2] ASI_DMMU
mov 0x40, %g4
stxa %g0, [%g4] ASI_DMMU_DEMAP
stxa %g0, [%g4] ASI_IMMU_DEMAP
stxa %g3, [%g2] ASI_DMMU
@ -366,6 +373,10 @@ xcall_flush_tlb_pending:
sllx %g1, 3, %g1
mov PRIMARY_CONTEXT, %g4
ldxa [%g4] ASI_DMMU, %g2
srlx %g2, CTX_PGSZ1_NUC_SHIFT, %g4
sllx %g4, CTX_PGSZ1_NUC_SHIFT, %g4
or %g5, %g4, %g5
mov PRIMARY_CONTEXT, %g4
stxa %g5, [%g4] ASI_DMMU
1: sub %g1, (1 << 3), %g1
ldx [%g7 + %g1], %g5