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Preliminary UltraSPARC III suport (not enabled yet).

This commit is contained in:
eeh 2001-08-30 22:58:30 +00:00
parent 04bdd02c1a
commit f2e3486b5b
1 changed files with 153 additions and 29 deletions
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182
sys/arch/sparc64/sparc64/locore.s
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@ -1,4 +1,4 @@
/* $NetBSD: locore.s,v 1.137 2001/08/13 06:10:10 jdolecek Exp $ */
/* $NetBSD: locore.s,v 1.138 2001/08/30 22:58:30 eeh Exp $ */
/*
* Copyright (c) 1996-2001 Eduardo Horvath
@ -56,6 +56,7 @@
*/
#define INTRLIST
#define SPITFIRE /* We don't support Cheetah (USIII) yet */
#define INTR_INTERLOCK /* Use IH_PEND field to interlock interrupts */
#undef PARANOID /* Extremely expensive consistency checks */
#undef NO_VCACHE /* Map w/D$ disabled */
@ -2183,8 +2184,8 @@ dmmu_write_fault:
inc %g2
stw %g2, [%g1+%lo(_C_LABEL(protfix))]
#endif
mov 0x010, %g1 ! Secondary flush
mov 0x020, %g5 ! Nucleus flush
mov DEMAP_PAGE_SECONDARY, %g1 ! Secondary flush
mov DEMAP_PAGE_NUCLEUS, %g5 ! Nucleus flush
stxa %g0, [%g7] ASI_DMMU ! clear out the fault
membar #Sync
sllx %g3, (64-13), %g7 ! Need to demap old entry first
@ -2303,8 +2304,8 @@ data_miss:
#if 0
/* This was a miss -- should be nothing to demap. */
sllx %g3, (64-13), %g6 ! Need to demap old entry first
mov 0x010, %g1 ! Secondary flush
mov 0x020, %g5 ! Nucleus flush
mov DEMAP_PAGE_SECONDARY, %g1 ! Secondary flush
mov DEMAP_PAGE_NUCLEUS, %g5 ! Nucleus flush
movrz %g6, %g5, %g1 ! Pick one
andn %g3, 0xfff, %g6
or %g6, %g1, %g6
@ -3269,11 +3270,11 @@ instr_miss:
stx %g4, [%g6] ! debug -- what we tried to enter in TLB
stb %g3, [%g6+0x20] ! debug
#endif
#if 1
#if 0
/* This was a miss -- should be nothing to demap. */
sllx %g3, (64-13), %g6 ! Need to demap old entry first
mov 0x010, %g1 ! Secondary flush
mov 0x020, %g5 ! Nucleus flush
mov DEMAP_PAGE_SECONDARY, %g1 ! Secondary flush
mov DEMAP_PAGE_NUCLEUS, %g5 ! Nucleus flush
movrz %g6, %g5, %g1 ! Pick one
andn %g3, 0xfff, %g6
or %g6, %g1, %g6
@ -5572,7 +5573,7 @@ _C_LABEL(cpu_initialize):
!!
!! Demap entire context 0 kernel
!!
or %l0, 0x020, %o0 ! Context = Nucleus
or %l0, DEMAP_PAGE_NUCLEUS, %o0 ! Context = Nucleus
add %l1, %l7, %o1 ! Demap all of kernel text seg
andn %o1, %l7, %o1 ! rounded up to 4MB.
set 0x2000, %o2 ! 8K page size
@ -5584,7 +5585,7 @@ _C_LABEL(cpu_initialize):
bleu,pt %xcc, 0b ! Next page
add %o0, %o2, %o0
or %l3, 0x020, %o0 ! Context = Nucleus
or %l3, DEMAP_PAGE_NUCLEUS, %o0 ! Context = Nucleus
add %l4, %l7, %o1 ! Demap all of kernel data seg
andn %o1, %l7, %o1 ! rounded up to 4MB.
0:
@ -5623,18 +5624,19 @@ _C_LABEL(cpu_initialize):
!!
mov CTX_PRIMARY, %o0
stxa %g0, [%o0] ASI_DMMU
membar #Sync ! No real reason for this XXXX
membar #Sync ! No real reason for this XXXX
flush %o5
!!
!! Demap context 1
!!
#ifdef SPITFIRE
mov 1, %o1
mov CTX_SECONDARY, %o0
stxa %o1, [%o0] ASI_DMMU
membar #Sync ! This probably should be a flush, but it works
flush %l0
mov 0x050, %o4
mov DEMAP_CTX_SECONDARY, %o4
stxa %o4, [%o4] ASI_DMMU_DEMAP
membar #Sync
stxa %o4, [%o4] ASI_IMMU_DEMAP
@ -5643,7 +5645,24 @@ _C_LABEL(cpu_initialize):
stxa %g0, [%o0] ASI_DMMU
membar #Sync
flush %l0
#else
mov 1, %o1
wrpr %g0, 1, %tl ! Enter nucleus context
mov CTX_PRIMARY, %o0
stxa %o1, [%o0] ASI_DMMU
membar #Sync ! This probably should be a flush, but it works
flush %l0
mov DEMAP_CTX_PRIMARY, %o4
stxa %o4, [%o4] ASI_DMMU_DEMAP
membar #Sync
stxa %o4, [%o4] ASI_IMMU_DEMAP
membar #Sync
flush %l0
stxa %g0, [%o0] ASI_DMMU
membar #Sync
flush %l0
wrpr %g0, 0, %tl ! Exit nucleus context
#endif
#ifdef DEBUG
set 1f, %o0 ! Debug printf
call _C_LABEL(prom_printf)
@ -5923,6 +5942,7 @@ _C_LABEL(tlb_flush_pte):
.text
2:
#endif
#ifdef SPITFIRE
mov CTX_SECONDARY, %o2
andn %o0, 0xfff, %g2 ! drop unused va bits
ldxa [%o2] ASI_DMMU, %g1 ! Save secondary context
@ -5930,7 +5950,7 @@ _C_LABEL(tlb_flush_pte):
membar #LoadStore
stxa %o1, [%o2] ASI_DMMU ! Insert context to demap
membar #Sync
or %g2, 0x010, %g2 ! Demap page from secondary context only
or %g2, DEMAP_PAGE_SECONDARY, %g2 ! Demap page from secondary context only
stxa %g2, [%g2] ASI_DMMU_DEMAP ! Do the demap
membar #Sync
stxa %g2, [%g2] ASI_IMMU_DEMAP ! to both TLBs
@ -5947,7 +5967,43 @@ _C_LABEL(tlb_flush_pte):
flush %o4
retl
nop
#else
!!
!! Cheetahs do not support flushing the IMMU from secondary context
!!
rdpr %tl, %o3
mov CTX_PRIMARY, %o2
brnz,pt %o3, 1f
andn %o0, 0xfff, %g2 ! drop unused va bits
wrpr %g0, 1, %tl ! Make sure we're NUCLEUS
1:
ldxa [%o2] ASI_DMMU, %g1 ! Save secondary context
sethi %hi(KERNBASE), %o4
membar #LoadStore
stxa %o1, [%o2] ASI_DMMU ! Insert context to demap
membar #Sync
or %g2, DEMAP_PAGE_PRIMARY, %g2
stxa %g2, [%g2] ASI_DMMU_DEMAP ! Do the demap
membar #Sync
stxa %g2, [%g2] ASI_IMMU_DEMAP ! to both TLBs
membar #Sync ! No real reason for this XXXX
flush %o4
srl %g2, 0, %g2 ! and make sure it's both 32- and 64-bit entries
stxa %g2, [%g2] ASI_DMMU_DEMAP ! Do the demap
membar #Sync
stxa %g2, [%g2] ASI_IMMU_DEMAP ! Do the demap
membar #Sync ! No real reason for this XXXX
flush %o4
stxa %g1, [%o2] ASI_DMMU ! Restore secondary asi
membar #Sync ! No real reason for this XXXX
brz,pt %o3, 1f
flush %o4
retl
nop
1:
retl
wrpr %g0, 0, %tl ! Return to kernel mode.
#endif
/*
* tlb_flush_ctx(int ctx)
*
@ -5988,23 +6044,49 @@ _C_LABEL(tlb_flush_ctx):
.text
2:
#endif
#ifdef SPITFIRE
mov CTX_SECONDARY, %o2
sethi %hi(KERNBASE), %o4
ldxa [%o2] ASI_DMMU, %g1 ! Save secondary context
membar #LoadStore
stxa %o0, [%o2] ASI_DMMU ! Insert context to demap
membar #Sync
set 0x030, %g2 ! Demap context from secondary context only
stxa %g2, [%g2] ASI_DMMU_DEMAP ! Do the demap
membar #Sync ! No real reason for this XXXX
stxa %g2, [%g2] ASI_IMMU_DEMAP ! Do the demap
set DEMAP_PAGE_SECONDARY, %g2
stxa %g2, [%g2] ASI_DMMU_DEMAP ! Do the demap
membar #Sync ! No real reason for this XXXX
stxa %g2, [%g2] ASI_IMMU_DEMAP ! Do the demap
membar #Sync
stxa %g1, [%o2] ASI_DMMU ! Restore secondary asi
membar #Sync ! No real reason for this XXXX
membar #Sync ! No real reason for this XXXX
flush %o4
retl
nop
#else
rdpr %tl, %o3
mov CTX_PRIMARY, %o2
brnz %o3, 1f
sethi %hi(KERNBASE), %o4
wrpr %g0, 1, %tl
1:
ldxa [%o2] ASI_DMMU, %g1 ! Save secondary context
membar #LoadStore
stxa %o0, [%o2] ASI_DMMU ! Insert context to demap
membar #Sync
set DEMAP_PAGE_PRIMARY, %g2 ! Demap context from secondary context only
stxa %g2, [%g2] ASI_DMMU_DEMAP ! Do the demap
membar #Sync ! No real reason for this XXXX
stxa %g2, [%g2] ASI_IMMU_DEMAP ! Do the demap
membar #Sync
stxa %g1, [%o2] ASI_DMMU ! Restore secondary asi
membar #Sync ! No real reason for this XXXX
brz,pt %o3, 1f
flush %o4
retl
nop
1:
retl
wrpr %g0, 0, %tl ! Return to kernel mode.
#endif
/*
* blast_vcache()
*
@ -6102,6 +6184,11 @@ _C_LABEL(dcache_flush_page):
brnz,pt %o5, 1b
inc 16, %o4
#ifdef SPITFIRE
!!
!! Linux sez that I$ flushes are not needed for cheetah.
!!
!! Now do the I$
srlx %o0, 13-8, %o2
mov -1, %o1 ! Generate mask for tag: bits [35..8]
@ -6122,7 +6209,7 @@ _C_LABEL(dcache_flush_page):
2:
brnz,pt %o5, 1b
inc 16, %o4
#endif
sethi %hi(KERNBASE), %o5
flush %o5
membar #Sync
@ -6156,8 +6243,10 @@ _C_LABEL(cache_flush_virt):
stxa %g0, [%o0] ASI_DCACHE_TAG
dec 16, %o4
xor %o5, %o0, %o3 ! Second way
stxa %g0, [%o0] ASI_ICACHE_TAG
stxa %g0, [%o3] ASI_ICACHE_TAG
#ifdef SPITFIRE
stxa %g0, [%o0] ASI_ICACHE_TAG! Don't do this on cheetah
stxa %g0, [%o3] ASI_ICACHE_TAG! Don't do this on cheetah
#endif
brgz,pt %o4, 1b
inc 16, %o0
2:
@ -6223,7 +6312,9 @@ _C_LABEL(cache_flush_phys):
clr %o4
1:
ldxa [%o4] ASI_DCACHE_TAG, %o3
ldda [%o4] ASI_ICACHE_TAG, %g0 ! Tag goes in %g1
#ifdef SPITFIRE
ldda [%o4] ASI_ICACHE_TAG, %g0 ! Tag goes in %g1 -- not on cheetah
#endif
sllx %o3, 40-29, %o3 ! Shift D$ tag into place
and %o3, %o2, %o3 ! Mask out trash
cmp %o0, %o3
@ -6236,6 +6327,7 @@ _C_LABEL(cache_flush_phys):
membar #LoadStore
stxa %g0, [%o4] ASI_DCACHE_TAG ! Just right
2:
#ifndef SPITFIRE
cmp %o0, %g1
blt,pt %xcc, 3f
cmp %o1, %g1
@ -6243,6 +6335,7 @@ _C_LABEL(cache_flush_phys):
nop
stxa %g0, [%o4] ASI_ICACHE_TAG
3:
#endif
membar #StoreLoad
dec 16, %o5
brgz,pt %o5, 1b
@ -7171,15 +7264,27 @@ ENTRY(switchexit)
LDPTR [%l6 + %lo(CPCB)], %l5
clr %l4 ! lastproc = NULL;
brz,pn %l1, 1f
set 0x030, %l1 ! Demap secondary context
#ifdef SPITFIRE
set DEMAP_CTX_SECONDARY, %l1 ! Demap secondary context
stxa %g1, [%l1] ASI_DMMU_DEMAP
stxa %g1, [%l1] ASI_IMMU_DEMAP
membar #Sync
#else
mov CTX_PRIMARY, %o0
wrpr %g0, 1, %tl
stxa %l1, [%o0] ASI_DMMU
set DEMAP_CTX_PRIMARY, %l1 ! Demap secondary context
stxa %g1, [%l1] ASI_DMMU_DEMAP
stxa %g1, [%l1] ASI_IMMU_DEMAP
membar #Sync
stxa %g0, [%o0] ASI_DMMU
membar #Sync
wrpr %g0, 0, %tl
#endif
1:
stxa %g0, [%o0] ASI_DMMU ! Clear out our context
membar #Sync
/* FALLTHROUGH */
/*
* When no processes are on the runq, switch
* idles here waiting for something to come ready.
@ -7600,12 +7705,25 @@ Lsw_load:
call _C_LABEL(ctx_alloc) ! ctx_alloc(&vm->vm_pmap);
mov %o2, %o0
set 0x030, %o1 ! This context has been recycled
#ifdef SPITFIRE
set DEMAP_CTX_SECONDARY, %o1 ! This context has been recycled
stxa %o0, [%l5] ASI_DMMU ! so we need to invalidate
membar #Sync
stxa %o1, [%o1] ASI_DMMU_DEMAP ! whatever bits of it may
stxa %o1, [%o1] ASI_IMMU_DEMAP ! be left in the TLB
membar #Sync
#else
wrpr %g0, 1, %tl
set DEMAP_CTX_PRIMARY, %o1 ! This context has been recycled
stxa %o0, [%l5] ASI_DMMU ! so we need to invalidate
membar #Sync
stxa %o1, [%o1] ASI_DMMU_DEMAP ! whatever bits of it may
stxa %o1, [%o1] ASI_IMMU_DEMAP ! be left in the TLB
membar #Sync
stxa %g0, [%l5] ASI_DMMU ! so we need to invalidate
membar #Sync
wrpr %g0, 0, %tl
#endif
#ifdef SCHED_DEBUG
mov %o0, %g1
save %sp, -CC64FSZ, %sp
@ -12197,7 +12315,8 @@ ENTRY(longjmp)
* Switch to context in %o0
*/
ENTRY(switchtoctx)
set 0x030, %o3
#ifdef SPITFIRE
set DEMAP_CTX_SECONDARY, %o3
stxa %o3, [%o3] ASI_DMMU_DEMAP
membar #Sync
mov CTX_SECONDARY, %o4
@ -12209,6 +12328,11 @@ ENTRY(longjmp)
flush %o2
retl
nop
#else
/* UNIMPLEMENTED */
retl
nop
#endif
#ifndef _LP64
/*