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authorDavid S. Miller <davem@sunset.davemloft.net>2006-02-07 22:13:05 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-20 01:11:56 -0800
commit8b11bd12aff76e02cdc2cbc9e439bba88d281223 (patch)
tree903ab8830616bfbe5a821e4359f642842c8060a4 /arch/sparc64
parent481295f982b21b1dbe71cbf41d3a93028fee30d1 (diff)
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[SPARC64]: Patch up mmu context register writes for sun4v.
sun4v uses ASI_MMU instead of ASI_DMMU Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64')
-rw-r--r--arch/sparc64/kernel/entry.S80
-rw-r--r--arch/sparc64/kernel/etrap.S8
-rw-r--r--arch/sparc64/kernel/head.S33
-rw-r--r--arch/sparc64/kernel/rtrap.S24
-rw-r--r--arch/sparc64/kernel/setup.c30
-rw-r--r--arch/sparc64/kernel/trampoline.S32
-rw-r--r--arch/sparc64/mm/init.c9
-rw-r--r--arch/sparc64/prom/p1275.c11
8 files changed, 166 insertions, 61 deletions
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index 4ca3ea0..f51b66a 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -97,10 +97,22 @@ do_fpdis:
add %g6, TI_FPREGS + 0x80, %g1
faddd %f0, %f2, %f4
fmuld %f0, %f2, %f6
- ldxa [%g3] ASI_DMMU, %g5
+
+661: ldxa [%g3] ASI_DMMU, %g5
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ ldxa [%g3] ASI_MMU, %g5
+ .previous
+
sethi %hi(sparc64_kern_sec_context), %g2
ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
- stxa %g2, [%g3] ASI_DMMU
+
+661: stxa %g2, [%g3] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g2, [%g3] ASI_MMU
+ .previous
+
membar #Sync
add %g6, TI_FPREGS + 0xc0, %g2
faddd %f0, %f2, %f8
@@ -126,11 +138,23 @@ do_fpdis:
fzero %f32
mov SECONDARY_CONTEXT, %g3
fzero %f34
- ldxa [%g3] ASI_DMMU, %g5
+
+661: ldxa [%g3] ASI_DMMU, %g5
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ ldxa [%g3] ASI_MMU, %g5
+ .previous
+
add %g6, TI_FPREGS, %g1
sethi %hi(sparc64_kern_sec_context), %g2
ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
- stxa %g2, [%g3] ASI_DMMU
+
+661: stxa %g2, [%g3] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g2, [%g3] ASI_MMU
+ .previous
+
membar #Sync
add %g6, TI_FPREGS + 0x40, %g2
faddd %f32, %f34, %f36
@@ -155,10 +179,22 @@ do_fpdis:
nop
3: mov SECONDARY_CONTEXT, %g3
add %g6, TI_FPREGS, %g1
- ldxa [%g3] ASI_DMMU, %g5
+
+661: ldxa [%g3] ASI_DMMU, %g5
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ ldxa [%g3] ASI_MMU, %g5
+ .previous
+
sethi %hi(sparc64_kern_sec_context), %g2
ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
- stxa %g2, [%g3] ASI_DMMU
+
+661: stxa %g2, [%g3] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g2, [%g3] ASI_MMU
+ .previous
+
membar #Sync
mov 0x40, %g2
membar #Sync
@@ -169,7 +205,13 @@ do_fpdis:
ldda [%g1 + %g2] ASI_BLK_S, %f48
membar #Sync
fpdis_exit:
- stxa %g5, [%g3] ASI_DMMU
+
+661: stxa %g5, [%g3] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g5, [%g3] ASI_MMU
+ .previous
+
membar #Sync
fpdis_exit2:
wr %g7, 0, %gsr
@@ -323,10 +365,22 @@ do_fptrap_after_fsr:
rd %gsr, %g3
stx %g3, [%g6 + TI_GSR]
mov SECONDARY_CONTEXT, %g3
- ldxa [%g3] ASI_DMMU, %g5
+
+661: ldxa [%g3] ASI_DMMU, %g5
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ ldxa [%g3] ASI_MMU, %g5
+ .previous
+
sethi %hi(sparc64_kern_sec_context), %g2
ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
- stxa %g2, [%g3] ASI_DMMU
+
+661: stxa %g2, [%g3] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g2, [%g3] ASI_MMU
+ .previous
+
membar #Sync
add %g6, TI_FPREGS, %g2
andcc %g1, FPRS_DL, %g0
@@ -341,7 +395,13 @@ do_fptrap_after_fsr:
stda %f48, [%g2 + %g3] ASI_BLK_S
5: mov SECONDARY_CONTEXT, %g1
membar #Sync
- stxa %g5, [%g1] ASI_DMMU
+
+661: stxa %g5, [%g1] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g5, [%g1] ASI_MMU
+ .previous
+
membar #Sync
ba,pt %xcc, etrap
wr %g0, 0, %fprs
diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S
index d8c062a..a0e7d48 100644
--- a/arch/sparc64/kernel/etrap.S
+++ b/arch/sparc64/kernel/etrap.S
@@ -95,7 +95,13 @@ etrap_save: save %g2, -STACK_BIAS, %sp
wrpr %g2, 0, %wstate
sethi %hi(sparc64_kern_pri_context), %g2
ldx [%g2 + %lo(sparc64_kern_pri_context)], %g3
- stxa %g3, [%l4] ASI_DMMU
+
+661: stxa %g3, [%l4] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g3, [%l4] ASI_MMU
+ .previous
+
sethi %hi(KERNBASE), %l4
flush %l4
mov ASI_AIUS, %l7
diff --git a/arch/sparc64/kernel/head.S b/arch/sparc64/kernel/head.S
index f04f739..a304845 100644
--- a/arch/sparc64/kernel/head.S
+++ b/arch/sparc64/kernel/head.S
@@ -303,12 +303,24 @@ jump_to_sun4u_init:
sun4u_init:
/* Set ctx 0 */
- mov PRIMARY_CONTEXT, %g7
- stxa %g0, [%g7] ASI_DMMU
- membar #Sync
+ mov PRIMARY_CONTEXT, %g7
+
+661: stxa %g0, [%g7] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g0, [%g7] ASI_MMU
+ .previous
+
+ membar #Sync
+
+ mov SECONDARY_CONTEXT, %g7
+
+661: stxa %g0, [%g7] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g0, [%g7] ASI_MMU
+ .previous
- mov SECONDARY_CONTEXT, %g7
- stxa %g0, [%g7] ASI_DMMU
membar #Sync
BRANCH_IF_ANY_CHEETAH(g1,g7,cheetah_tlb_fixup)
@@ -436,8 +448,15 @@ setup_trap_table:
/* Start using proper page size encodings in ctx register. */
sethi %hi(sparc64_kern_pri_context), %g3
ldx [%g3 + %lo(sparc64_kern_pri_context)], %g2
- mov PRIMARY_CONTEXT, %g1
- stxa %g2, [%g1] ASI_DMMU
+
+ mov PRIMARY_CONTEXT, %g1
+
+661: stxa %g2, [%g1] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g2, [%g1] ASI_MMU
+ .previous
+
membar #Sync
/* Kill PROM timer */
diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S
index a55d517..551f719 100644
--- a/arch/sparc64/kernel/rtrap.S
+++ b/arch/sparc64/kernel/rtrap.S
@@ -264,11 +264,23 @@ rt_continue: ldx [%sp + PTREGS_OFF + PT_V9_G1], %g1
brnz,pn %l3, kern_rtt
mov PRIMARY_CONTEXT, %l7
- ldxa [%l7 + %l7] ASI_DMMU, %l0
+
+661: ldxa [%l7 + %l7] ASI_DMMU, %l0
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ ldxa [%l7 + %l7] ASI_MMU, %l0
+ .previous
+
sethi %hi(sparc64_kern_pri_nuc_bits), %l1
ldx [%l1 + %lo(sparc64_kern_pri_nuc_bits)], %l1
or %l0, %l1, %l0
- stxa %l0, [%l7] ASI_DMMU
+
+661: stxa %l0, [%l7] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %l0, [%l7] ASI_MMU
+ .previous
+
sethi %hi(KERNBASE), %l7
flush %l7
rdpr %wstate, %l1
@@ -303,7 +315,13 @@ user_rtt_fill_fixup:
sethi %hi(sparc64_kern_pri_context), %g2
ldx [%g2 + %lo(sparc64_kern_pri_context)], %g2
mov PRIMARY_CONTEXT, %g1
- stxa %g2, [%g1] ASI_DMMU
+
+661: stxa %g2, [%g1] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g2, [%g1] ASI_MMU
+ .previous
+
sethi %hi(KERNBASE), %g1
flush %g1
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c
index 6d6178e..2d64320 100644
--- a/arch/sparc64/kernel/setup.c
+++ b/arch/sparc64/kernel/setup.c
@@ -189,26 +189,30 @@ int prom_callback(long *args)
}
if ((va >= KERNBASE) && (va < (KERNBASE + (4 * 1024 * 1024)))) {
- extern unsigned long sparc64_kern_pri_context;
-
- /* Spitfire Errata #32 workaround */
- __asm__ __volatile__("stxa %0, [%1] %2\n\t"
- "flush %%g6"
- : /* No outputs */
- : "r" (sparc64_kern_pri_context),
- "r" (PRIMARY_CONTEXT),
- "i" (ASI_DMMU));
+ if (tlb_type == spitfire) {
+ extern unsigned long sparc64_kern_pri_context;
+
+ /* Spitfire Errata #32 workaround */
+ __asm__ __volatile__(
+ "stxa %0, [%1] %2\n\t"
+ "flush %%g6"
+ : /* No outputs */
+ : "r" (sparc64_kern_pri_context),
+ "r" (PRIMARY_CONTEXT),
+ "i" (ASI_DMMU));
+ }
/*
* Locked down tlb entry.
*/
- if (tlb_type == spitfire)
+ if (tlb_type == spitfire) {
tte = spitfire_get_dtlb_data(SPITFIRE_HIGHEST_LOCKED_TLBENT);
- else if (tlb_type == cheetah || tlb_type == cheetah_plus)
+ res = PROM_TRUE;
+ } else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
tte = cheetah_get_ldtlb_data(CHEETAH_HIGHEST_LOCKED_TLBENT);
-
- res = PROM_TRUE;
+ res = PROM_TRUE;
+ }
goto done;
}
diff --git a/arch/sparc64/kernel/trampoline.S b/arch/sparc64/kernel/trampoline.S
index 18c333f..d9e2af3 100644
--- a/arch/sparc64/kernel/trampoline.S
+++ b/arch/sparc64/kernel/trampoline.S
@@ -272,10 +272,22 @@ do_unlock:
wr %g0, ASI_P, %asi
mov PRIMARY_CONTEXT, %g7
- stxa %g0, [%g7] ASI_DMMU
+
+661: stxa %g0, [%g7] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g0, [%g7] ASI_MMU
+ .previous
+
membar #Sync
mov SECONDARY_CONTEXT, %g7
- stxa %g0, [%g7] ASI_DMMU
+
+661: stxa %g0, [%g7] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g0, [%g7] ASI_MMU
+ .previous
+
membar #Sync
mov 1, %g5
@@ -301,11 +313,17 @@ do_unlock:
nop
/* Start using proper page size encodings in ctx register. */
- sethi %hi(sparc64_kern_pri_context), %g3
- ldx [%g3 + %lo(sparc64_kern_pri_context)], %g2
- mov PRIMARY_CONTEXT, %g1
- stxa %g2, [%g1] ASI_DMMU
- membar #Sync
+ sethi %hi(sparc64_kern_pri_context), %g3
+ ldx [%g3 + %lo(sparc64_kern_pri_context)], %g2
+ mov PRIMARY_CONTEXT, %g1
+
+661: stxa %g2, [%g1] ASI_DMMU
+ .section .sun4v_1insn_patch, "ax"
+ .word 661b
+ stxa %g2, [%g1] ASI_MMU
+ .previous
+
+ membar #Sync
rdpr %pstate, %o1
or %o1, PSTATE_IE, %o1
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 4c95cf3..6504d6e 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -792,15 +792,6 @@ void sparc_ultra_dump_dtlb(void)
}
}
-static inline void spitfire_errata32(void)
-{
- __asm__ __volatile__("stxa %0, [%1] %2\n\t"
- "flush %%g6"
- : /* No outputs */
- : "r" (0),
- "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU));
-}
-
extern unsigned long cmdline_memory_size;
unsigned long __init bootmem_init(unsigned long *pages_avail)
diff --git a/arch/sparc64/prom/p1275.c b/arch/sparc64/prom/p1275.c
index a5a7c57..2b32c48 100644
--- a/arch/sparc64/prom/p1275.c
+++ b/arch/sparc64/prom/p1275.c
@@ -30,16 +30,6 @@ extern void prom_world(int);
extern void prom_cif_interface(void);
extern void prom_cif_callback(void);
-static inline unsigned long spitfire_get_primary_context(void)
-{
- unsigned long ctx;
-
- __asm__ __volatile__("ldxa [%1] %2, %0"
- : "=r" (ctx)
- : "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU));
- return ctx;
-}
-
/*
* This provides SMP safety on the p1275buf. prom_callback() drops this lock
* to allow recursuve acquisition.
@@ -55,7 +45,6 @@ long p1275_cmd(const char *service, long fmt, ...)
long attrs, x;
p = p1275buf.prom_buffer;
- BUG_ON((spitfire_get_primary_context() & CTX_NR_MASK) != 0);
spin_lock_irqsave(&prom_entry_lock, flags);