Author: neel
Date: Sat Mar 20 05:07:15 2010
New Revision: 205360
URL: http://svn.freebsd.org/changeset/base/205360
Log:
This change enables use of physical memory that is beyond the direct
mapped kseg0 region.
The basic idea is to use KVA from the kseg2 region for mapping page
table pages that lie beyond the direct mapped region.
The TLB miss handler can now recursively fault into the TLB invalid
handler if it dereferences a kseg2 page table page address that is not
in the TLB.
Tested by: JC (c.jayachand...@gmail.com)
Modified:
head/sys/mips/include/db_machdep.h
head/sys/mips/include/trap.h
head/sys/mips/mips/db_trace.c
head/sys/mips/mips/exception.S
head/sys/mips/mips/pmap.c
head/sys/mips/mips/trap.c
Modified: head/sys/mips/include/db_machdep.h
==============================================================================
--- head/sys/mips/include/db_machdep.h Sat Mar 20 05:06:47 2010
(r205359)
+++ head/sys/mips/include/db_machdep.h Sat Mar 20 05:07:15 2010
(r205360)
@@ -92,7 +92,6 @@ db_addr_t next_instr_address(db_addr_t,
#define DB_SMALL_VALUE_MIN (-0x400001)
int db_inst_type(int);
-void db_dump_tlb(int, int);
db_addr_t branch_taken(int inst, db_addr_t pc);
void stacktrace_subr(register_t pc, register_t sp, register_t ra, int
(*)(const char *, ...));
int kdbpeek(int *);
Modified: head/sys/mips/include/trap.h
==============================================================================
--- head/sys/mips/include/trap.h Sat Mar 20 05:06:47 2010
(r205359)
+++ head/sys/mips/include/trap.h Sat Mar 20 05:07:15 2010
(r205360)
@@ -111,11 +111,10 @@ void trapDump(char *msg);
void MipsFPTrap(u_int, u_int, u_int);
void MipsKernGenException(void);
void MipsKernIntr(void);
-void MipsKernTLBInvalidException(void);
+void MipsTLBInvalidException(void);
void MipsTLBMissException(void);
void MipsUserGenException(void);
void MipsUserIntr(void);
-void MipsUserTLBInvalidException(void);
u_int trap(struct trapframe *);
Modified: head/sys/mips/mips/db_trace.c
==============================================================================
--- head/sys/mips/mips/db_trace.c Sat Mar 20 05:06:47 2010
(r205359)
+++ head/sys/mips/mips/db_trace.c Sat Mar 20 05:07:15 2010
(r205360)
@@ -162,13 +162,10 @@ loop:
subr = (uintptr_t)MipsUserGenException;
else if (pcBetween(MipsKernIntr, MipsUserIntr))
subr = (uintptr_t)MipsKernIntr;
- else if (pcBetween(MipsUserIntr, MipsKernTLBInvalidException))
+ else if (pcBetween(MipsUserIntr, MipsTLBInvalidException))
subr = (uintptr_t)MipsUserIntr;
- else if (pcBetween(MipsKernTLBInvalidException,
- MipsUserTLBInvalidException))
- subr = (uintptr_t)MipsKernTLBInvalidException;
- else if (pcBetween(MipsUserTLBInvalidException, MipsTLBMissException))
- subr = (uintptr_t)MipsUserTLBInvalidException;
+ else if (pcBetween(MipsTLBInvalidException, MipsTLBMissException))
+ subr = (uintptr_t)MipsTLBInvalidException;
else if (pcBetween(fork_trampoline, savectx))
subr = (uintptr_t)fork_trampoline;
else if (pcBetween(savectx, mips_cpu_throw))
Modified: head/sys/mips/mips/exception.S
==============================================================================
--- head/sys/mips/mips/exception.S Sat Mar 20 05:06:47 2010
(r205359)
+++ head/sys/mips/mips/exception.S Sat Mar 20 05:07:15 2010
(r205360)
@@ -264,13 +264,13 @@ SlowFault:
mfc0 a0, COP_0_STATUS_REG ;\
li a2, (MIPS_SR_KX | MIPS_SR_SX | MIPS_SR_UX) ; \
or a0, a0, a2 ; \
- li a2, ~(MIPS_SR_INT_IE|MIPS_SR_EXL) ; \
+ li a2, ~(MIPS_SR_INT_IE | MIPS_SR_EXL | SR_KSU_USER) ; \
and a0, a0, a2 ; \
mtc0 a0, COP_0_STATUS_REG
#else
#define CLEAR_STATUS \
mfc0 a0, COP_0_STATUS_REG ;\
- li a2, ~(MIPS_SR_INT_IE|MIPS_SR_EXL) ; \
+ li a2, ~(MIPS_SR_INT_IE | MIPS_SR_EXL | SR_KSU_USER) ; \
and a0, a0, a2 ; \
mtc0 a0, COP_0_STATUS_REG
#endif
@@ -827,177 +827,168 @@ NNON_LEAF(MipsUserIntr, STAND_FRAME_SIZE
.set at
END(MipsUserIntr)
-NLEAF(MipsKernTLBInvalidException)
- .set noat
- mfc0 k0, COP_0_BAD_VADDR # get the fault address
-
+NLEAF(MipsTLBInvalidException)
+ .set push
+ .set noat
+ .set noreorder
+ mfc0 k0, COP_0_BAD_VADDR
li k1, VM_MAXUSER_ADDRESS
sltu k1, k0, k1
- beqz k1, 1f
- nop
- GET_CPU_PCPU(k1)
- lw k1, PC_SEGBASE(k1) # works for single cpu????
- beqz k1, _C_LABEL(MipsKernGenException) # seg tab is null
+ bnez k1, 1f
nop
+
+ /* badvaddr = kernel address */
+ lui k1, %hi(_C_LABEL(kernel_segmap))
b 2f
- nop
+ lw k1, %lo(_C_LABEL(kernel_segmap))(k1)
+
1:
- li k1, (VM_MAX_KERNEL_ADDRESS)
- bgez k0, _C_LABEL(MipsKernGenException) # full trap processing
- sltu k1, k1, k0 # check fault address against
- bnez k1, _C_LABEL(MipsKernGenException) # kernel_segmap upper bound
- lui k1, %hi(_C_LABEL(kernel_segmap)) # k1=hi of segbase
- lw k1, %lo(_C_LABEL(kernel_segmap))(k1) # k1=segment tab base
- beqz k1, _C_LABEL(MipsKernGenException) # seg tab is null
+ /* badvaddr = user address */
+ GET_CPU_PCPU(k1)
+ lw k1, PC_SEGBASE(k1)
+
2:
- srl k0, 20 # k0=seg offset (almost)
- andi k0, k0, 0xffc # k0=seg offset (mask 0x3)
-#xxx mips64 unsafe?
- addu k1, k0, k1 # k1=seg entry address
- lw k1, 0(k1) # k1=seg entry
- mfc0 k0, COP_0_BAD_VADDR # k0=bad address (again)
- beq k1, zero, _C_LABEL(MipsKernGenException) # ==0 -- no page table
- srl k0, k0, PGSHIFT-2
- andi k0, k0, 0xffc # compute offset from index
- tlbp # Probe the invalid entry
-#xxx mips64 unsafe?
+ beqz k1, 3f /* invalid page directory pointer */
+ nop
+
+ srl k0, SEGSHIFT - 2
+ andi k0, 0xffc
addu k1, k1, k0
- and k0, k0, 4 # check even/odd page
- nop # required for QED 5230
- bne k0, zero, KernTLBIOdd
+ lw k1, 0(k1)
+ beqz k1, 3f /* invalid page table page pointer */
nop
- mfc0 k0, COP_0_TLB_INDEX
+ mfc0 k0, COP_0_BAD_VADDR
+ srl k0, PGSHIFT - 2
+ andi k0, 0xffc
+ addu k1, k1, k0
+
+ lw k0, 0(k1)
+ andi k0, PTE_V
+ beqz k0, 3f /* invalid page table entry */
nop
- bltz k0, sys_stk_chk
- sltiu k0, k0, VMWIRED_ENTRIES # index below wired entries?
- bne k0, zero, sys_stk_chk
- lw k0, 0(k1) # get PTE entry
+ andi k0, k1, 4
+ bnez k0, odd_page
+ nop
- _SLL k0, k0, WIRED_SHIFT # get rid of "wired" bit
+even_page:
+ lw k0, 0(k1)
+ _SLL k0, k0, WIRED_SHIFT
_SRL k0, k0, WIRED_SHIFT
- _MTC0 k0, COP_0_TLB_LO0 # load PTE entry
- and k0, k0, PTE_V # check for valid entry
- nop # required for QED5230
- beq k0, zero, _C_LABEL(MipsKernGenException) # PTE invalid
- lw k0, 4(k1) # get odd PTE entry
+ _MTC0 k0, COP_0_TLB_LO0
+
+ lw k0, 4(k1)
_SLL k0, k0, WIRED_SHIFT
_SRL k0, k0, WIRED_SHIFT
- _MTC0 k0, COP_0_TLB_LO1 # load PTE entry
- HAZARD_DELAY
- tlbwi # write TLB
- HAZARD_DELAY
- eret
+ _MTC0 k0, COP_0_TLB_LO1
-KernTLBIOdd:
- mfc0 k0, COP_0_TLB_INDEX
+ b tlb_insert_entry
nop
- bltz k0, sys_stk_chk
- sltiu k0, k0, VMWIRED_ENTRIES # index below wired entries?
- bne k0, zero, sys_stk_chk
- lw k0, 0(k1) # get PTE entry
-
- _SLL k0, k0, WIRED_SHIFT # get rid of wired bit
+odd_page:
+ lw k0, 0(k1)
+ _SLL k0, k0, WIRED_SHIFT
_SRL k0, k0, WIRED_SHIFT
- _MTC0 k0, COP_0_TLB_LO1 # save PTE entry
- and k0, k0, PTE_V # check for valid entry
- nop # required for QED5230
- beq k0, zero, _C_LABEL(MipsKernGenException) # PTE invalid
- lw k0, -4(k1) # get even PTE entry
+ _MTC0 k0, COP_0_TLB_LO1
+
+ lw k0, -4(k1)
_SLL k0, k0, WIRED_SHIFT
_SRL k0, k0, WIRED_SHIFT
- _MTC0 k0, COP_0_TLB_LO0 # save PTE entry
+ _MTC0 k0, COP_0_TLB_LO0
+
+tlb_insert_entry:
+ tlbp
HAZARD_DELAY
- tlbwi # update TLB
+ mfc0 k0, COP_0_TLB_INDEX
HAZARD_DELAY
+ bltz k0, tlb_insert_random
+ nop
+ tlbwi
eret
+ ssnop
- .set at
-END(MipsKernTLBInvalidException)
-
-
-NLEAF(MipsUserTLBInvalidException)
- .set noat
- mfc0 k0, COP_0_BAD_VADDR # get the fault address
+tlb_insert_random:
+ tlbwr
+ eret
+ ssnop
- li k1, VM_MAXUSER_ADDRESS
- sltu k1, k0, k1
- beqz k1, _C_LABEL(MipsUserGenException)
+3:
+ /*
+ * Branch to the comprehensive exception processing.
+ */
+ mfc0 k1, COP_0_STATUS_REG
+ andi k1, k1, SR_KSU_USER
+ bnez k1, _C_LABEL(MipsUserGenException)
nop
+
+ /*
+ * Check for kernel stack overflow.
+ */
GET_CPU_PCPU(k1)
- lw k1, PC_SEGBASE(k1) # works for single cpu????
- beqz k1, _C_LABEL(MipsUserGenException) # seg tab is null
- nop
-2:
- srl k0, 20 # k0=seg offset (almost)
- andi k0, k0, 0xffc # k0=seg offset (mask 0x3)
-#xxx mips64 unsafe?
- addu k1, k0, k1 # k1=seg entry address
- lw k1, 0(k1) # k1=seg entry
- mfc0 k0, COP_0_BAD_VADDR # k0=bad address (again)
- beq k1, zero, _C_LABEL(MipsUserGenException) # ==0 -- no page table
- srl k0, k0, PGSHIFT-2
- andi k0, k0, 0xffc # compute offset from index
- tlbp # Probe the invalid entry
-#xxx mips64 unsafe?
- addu k1, k1, k0
- and k0, k0, 4 # check even/odd page
- nop # required for QED 5230
- bne k0, zero, UserTLBIOdd
+ lw k0, PC_CURTHREAD(k1)
+ lw k0, TD_REALKSTACK(k0)
+ sltu k0, k0, sp
+ bnez k0, _C_LABEL(MipsKernGenException)
nop
- mfc0 k0, COP_0_TLB_INDEX
- nop
- bltz k0, _C_LABEL(MipsUserGenException)
+ /*
+ * Kernel stack overflow.
+ *
+ * Move to a valid stack before we call panic. We use the boot stack
+ * for this purpose.
+ */
+ GET_CPU_PCPU(k1)
+ lw k1, PC_CPUID(k1)
+ sll k1, k1, PAGE_SHIFT + 1
- sltiu k0, k0, VMWIRED_ENTRIES # index below wired entries?
- bne k0, zero, _C_LABEL(MipsUserGenException)
- lw k0, 0(k1) # get PTE entry
+ PTR_LA k0, _C_LABEL(pcpu_space)
+ addiu k0, (NBPG * 2)
+ addu k0, k0, k1
- _SLL k0, k0, WIRED_SHIFT # get rid of "wired" bit
- _SRL k0, k0, WIRED_SHIFT
- _MTC0 k0, COP_0_TLB_LO0 # load PTE entry
- and k0, k0, PTE_V # check for valid entry
- nop # required for QED5230
- beq k0, zero, _C_LABEL(MipsUserGenException) # PTE invalid
- lw k0, 4(k1) # get odd PTE entry
- _SLL k0, k0, WIRED_SHIFT
- _SRL k0, k0, WIRED_SHIFT
- _MTC0 k0, COP_0_TLB_LO1 # load PTE entry
- HAZARD_DELAY
- tlbwi # write TLB
- HAZARD_DELAY
- eret
+ /*
+ * Stash the original value of 'sp' so we can update trapframe later.
+ * We assume that SAVE_CPU does not trash 'k1'.
+ */
+ move k1, sp
-UserTLBIOdd:
- mfc0 k0, COP_0_TLB_INDEX
- nop
- bltz k0, _C_LABEL(MipsUserGenException)
- sltiu k0, k0, VMWIRED_ENTRIES # index below wired entries?
+ move sp, k0
+ subu sp, sp, KERN_EXC_FRAME_SIZE
- bne k0, zero, _C_LABEL(MipsUserGenException)
- lw k0, 0(k1) # get PTE entry
+ move k0, ra
+ move ra, zero
+ sw ra, CALLFRAME_RA(sp) /* stop the ddb backtrace right here */
+ sw zero, CALLFRAME_SP(sp)
+ move ra, k0
- _SLL k0, k0, WIRED_SHIFT # get rid of wired bit
- _SRL k0, k0, WIRED_SHIFT
- _MTC0 k0, COP_0_TLB_LO1 # save PTE entry
- and k0, k0, PTE_V # check for valid entry
- nop # required for QED5230
- beq k0, zero, _C_LABEL(MipsUserGenException) # PTE invalid
- lw k0, -4(k1) # get even PTE entry
- _SLL k0, k0, WIRED_SHIFT
- _SRL k0, k0, WIRED_SHIFT
- _MTC0 k0, COP_0_TLB_LO0 # save PTE entry
- HAZARD_DELAY
- tlbwi # update TLB
- HAZARD_DELAY
- eret
+ SAVE_CPU
- .set at
-END(MipsUserTLBInvalidException)
+ /*
+ * Now restore the value of 'sp' at the time of the tlb exception in
+ * the trapframe.
+ */
+ SAVE_REG(k1, SP, sp)
+
+ /*
+ * Squelch any more overflow checks by setting the stack base to 0.
+ */
+ GET_CPU_PCPU(k1)
+ lw k0, PC_CURTHREAD(k1)
+ sw zero, TD_REALKSTACK(k0)
+
+ move a1, a0
+ PANIC("kernel stack overflow - trapframe at %p")
+
+ /*
+ * This nop is necessary so that the 'ra' remains within the bounds
+ * of this handler. Otherwise the ddb backtrace code will think that
+ * the panic() was called from MipsTLBMissException.
+ */
+ nop
+
+ .set pop
+END(MipsTLBInvalidException)
/*----------------------------------------------------------------------------
*
@@ -1048,68 +1039,6 @@ NLEAF(MipsTLBMissException)
tlbwr # write to tlb
HAZARD_DELAY
eret # return from exception
-
-sys_stk_chk:
- GET_CPU_PCPU(k0)
- lw k0, PC_CURTHREAD(k0)
- lw k0, TD_REALKSTACK(k0)
- sltu k0, sp, k0 # check for stack overflow
- beqz k0, _C_LABEL(MipsKernGenException) # not stack overflow
- nop
-
-# stack overflow
- PTR_LA a0, _C_LABEL(_start) - CALLFRAME_SIZ - 8 # set sp to a valid
place
- sw sp, 24(a0)
- move sp, a0
- PTR_LA a0, 1f
- mfc0 a2, COP_0_STATUS_REG
- mfc0 a3, COP_0_CAUSE_REG
- _MFC0 a1, COP_0_EXC_PC
- sw a2, 16(sp)
- sw a3, 20(sp)
- move a2, ra
- PTR_LA k0, _C_LABEL(printf)
- jalr k0
- mfc0 a3, COP_0_BAD_VADDR
-
- PTR_LA sp, _C_LABEL(_start) - CALLFRAME_SIZ # set sp to a valid place
-
-#if !defined(SMP) && defined(DDB)
- PTR_LA a0, 2f
- PTR_LA k0, _C_LABEL(trapDump)
- jalr k0
- nop
-
- li a0, 0
- lw a1, _C_LABEL(num_tlbentries)
- PTR_LA k0, _C_LABEL(db_dump_tlb)
- jalr k0
- addu a1, -1
-
-3:
- b 3b
- nop
-#endif
-
- PANIC("kernel stack overflow")
-
- .data
- .globl lastktlbmiss
-lastktlbmiss:
- .word 0
-lastktlbmisspc:
- .word 0
-lastutlbmiss:
- .word 0
-lastutlbmisspc:
- .word 0
-
-1:
- .asciiz "ktlbmiss: PC %x RA %x ADR %x\nSR %x CR %x SP %x\n"
-2:
- .asciiz "stack ovf"
- .text
-
.set at
END(MipsTLBMissException)
Modified: head/sys/mips/mips/pmap.c
==============================================================================
--- head/sys/mips/mips/pmap.c Sat Mar 20 05:06:47 2010 (r205359)
+++ head/sys/mips/mips/pmap.c Sat Mar 20 05:07:15 2010 (r205360)
@@ -949,10 +949,21 @@ pmap_unmap_fpage(vm_paddr_t pa, struct f
static int
_pmap_unwire_pte_hold(pmap_t pmap, vm_page_t m)
{
+ vm_offset_t pteva;
/*
* unmap the page table page
*/
+ pteva = (vm_offset_t)pmap->pm_segtab[m->pindex];
+ if (pteva >= VM_MIN_KERNEL_ADDRESS) {
+ pmap_kremove(pteva);
+ kmem_free(kernel_map, pteva, PAGE_SIZE);
+ } else {
+ KASSERT(MIPS_IS_KSEG0_ADDR(pteva),
+ ("_pmap_unwire_pte_hold: 0x%0lx is not in kseg0",
+ (long)pteva));
+ }
+
pmap->pm_segtab[m->pindex] = 0;
--pmap->pm_stats.resident_count;
@@ -997,7 +1008,7 @@ pmap_unuse_pt(pmap_t pmap, vm_offset_t v
mpte = pmap->pm_ptphint;
} else {
pteva = *pmap_pde(pmap, va);
- mpte = PHYS_TO_VM_PAGE(MIPS_KSEG0_TO_PHYS(pteva));
+ mpte = PHYS_TO_VM_PAGE(vtophys(pteva));
pmap->pm_ptphint = mpte;
}
}
@@ -1029,6 +1040,8 @@ pmap_pinit0(pmap_t pmap)
int
pmap_pinit(pmap_t pmap)
{
+ vm_offset_t ptdva;
+ vm_paddr_t ptdpa;
vm_page_t ptdpg;
int i;
int req;
@@ -1050,8 +1063,17 @@ pmap_pinit(pmap_t pmap)
ptdpg->valid = VM_PAGE_BITS_ALL;
- pmap->pm_segtab = (pd_entry_t *)
- MIPS_PHYS_TO_KSEG0(VM_PAGE_TO_PHYS(ptdpg));
+ ptdpa = VM_PAGE_TO_PHYS(ptdpg);
+ if (ptdpa < MIPS_KSEG0_LARGEST_PHYS) {
+ ptdva = MIPS_PHYS_TO_KSEG0(ptdpa);
+ } else {
+ ptdva = kmem_alloc_nofault(kernel_map, PAGE_SIZE);
+ if (ptdva == 0)
+ panic("pmap_pinit: unable to allocate kva");
+ pmap_kenter(ptdva, ptdpa);
+ }
+
+ pmap->pm_segtab = (pd_entry_t *)ptdva;
if ((ptdpg->flags & PG_ZERO) == 0)
bzero(pmap->pm_segtab, PAGE_SIZE);
@@ -1118,7 +1140,15 @@ _pmap_allocpte(pmap_t pmap, unsigned pte
pmap->pm_stats.resident_count++;
ptepa = VM_PAGE_TO_PHYS(m);
- pteva = MIPS_PHYS_TO_KSEG0(ptepa);
+ if (ptepa < MIPS_KSEG0_LARGEST_PHYS) {
+ pteva = MIPS_PHYS_TO_KSEG0(ptepa);
+ } else {
+ pteva = kmem_alloc_nofault(kernel_map, PAGE_SIZE);
+ if (pteva == 0)
+ panic("_pmap_allocpte: unable to allocate kva");
+ pmap_kenter(pteva, ptepa);
+ }
+
pmap->pm_segtab[ptepindex] = (pd_entry_t)pteva;
/*
@@ -1172,7 +1202,7 @@ retry:
(pmap->pm_ptphint->pindex == ptepindex)) {
m = pmap->pm_ptphint;
} else {
- m = PHYS_TO_VM_PAGE(MIPS_KSEG0_TO_PHYS(pteva));
+ m = PHYS_TO_VM_PAGE(vtophys(pteva));
pmap->pm_ptphint = m;
}
m->wire_count++;
@@ -1212,13 +1242,24 @@ retry:
void
pmap_release(pmap_t pmap)
{
+ vm_offset_t ptdva;
vm_page_t ptdpg;
KASSERT(pmap->pm_stats.resident_count == 0,
("pmap_release: pmap resident count %ld != 0",
pmap->pm_stats.resident_count));
- ptdpg = PHYS_TO_VM_PAGE(MIPS_KSEG0_TO_PHYS(pmap->pm_segtab));
+ ptdva = (vm_offset_t)pmap->pm_segtab;
+ ptdpg = PHYS_TO_VM_PAGE(vtophys(ptdva));
+
+ if (ptdva >= VM_MIN_KERNEL_ADDRESS) {
+ pmap_kremove(ptdva);
+ kmem_free(kernel_map, ptdva, PAGE_SIZE);
+ } else {
+ KASSERT(MIPS_IS_KSEG0_ADDR(ptdva),
+ ("pmap_release: 0x%0lx is not in kseg0", (long)ptdva));
+ }
+
ptdpg->wire_count--;
atomic_subtract_int(&cnt.v_wire_count, 1);
vm_page_free_zero(ptdpg);
@@ -2030,7 +2071,7 @@ pmap_enter_quick_locked(pmap_t pmap, vm_
(pmap->pm_ptphint->pindex == ptepindex)) {
mpte = pmap->pm_ptphint;
} else {
- mpte =
PHYS_TO_VM_PAGE(MIPS_KSEG0_TO_PHYS(pteva));
+ mpte = PHYS_TO_VM_PAGE(vtophys(pteva));
pmap->pm_ptphint = mpte;
}
mpte->wire_count++;
@@ -3171,18 +3212,6 @@ pmap_asid_alloc(pmap)
pmap->pm_asid[PCPU_GET(cpuid)].gen = PCPU_GET(asid_generation);
PCPU_SET(next_asid, PCPU_GET(next_asid) + 1);
}
-
-#ifdef DEBUG
- if (pmapdebug & (PDB_FOLLOW | PDB_TLBPID)) {
- if (curproc)
- printf("pmap_asid_alloc: curproc %d '%s' ",
- curproc->p_pid, curproc->p_comm);
- else
- printf("pmap_asid_alloc: curproc <none> ");
- printf("segtab %p asid %d\n", pmap->pm_segtab,
- pmap->pm_asid[PCPU_GET(cpuid)].asid);
- }
-#endif
}
int
@@ -3251,42 +3280,6 @@ pmap_set_modified(vm_offset_t pa)
PHYS_TO_VM_PAGE(pa)->md.pv_flags |= (PV_TABLE_REF | PV_TABLE_MOD);
}
-#include <machine/db_machdep.h>
-
-/*
- * Dump the translation buffer (TLB) in readable form.
- */
-
-void
-db_dump_tlb(int first, int last)
-{
- struct tlb tlb;
- int tlbno;
-
- tlbno = first;
-
- while (tlbno <= last) {
- MachTLBRead(tlbno, &tlb);
- if (tlb.tlb_lo0 & PTE_V || tlb.tlb_lo1 & PTE_V) {
- printf("TLB %2d vad 0x%08x ", tlbno, (tlb.tlb_hi &
0xffffff00));
- } else {
- printf("TLB*%2d vad 0x%08x ", tlbno, (tlb.tlb_hi &
0xffffff00));
- }
- printf("0=0x%08x ", pfn_to_vad(tlb.tlb_lo0));
- printf("%c", tlb.tlb_lo0 & PTE_M ? 'M' : ' ');
- printf("%c", tlb.tlb_lo0 & PTE_G ? 'G' : ' ');
- printf(" atr %x ", (tlb.tlb_lo0 >> 3) & 7);
- printf("1=0x%08x ", pfn_to_vad(tlb.tlb_lo1));
- printf("%c", tlb.tlb_lo1 & PTE_M ? 'M' : ' ');
- printf("%c", tlb.tlb_lo1 & PTE_G ? 'G' : ' ');
- printf(" atr %x ", (tlb.tlb_lo1 >> 3) & 7);
- printf(" sz=%x pid=%x\n", tlb.tlb_mask,
- (tlb.tlb_hi & 0x000000ff)
- );
- tlbno++;
- }
-}
-
/*
* Routine: pmap_kextract
* Function:
Modified: head/sys/mips/mips/trap.c
==============================================================================
--- head/sys/mips/mips/trap.c Sat Mar 20 05:06:47 2010 (r205359)
+++ head/sys/mips/mips/trap.c Sat Mar 20 05:07:15 2010 (r205360)
@@ -118,8 +118,8 @@ void (*machExceptionTable[]) (void)= {
*/
MipsKernIntr, /* external interrupt */
MipsKernGenException, /* TLB modification */
- MipsKernTLBInvalidException, /* TLB miss (load or instr. fetch) */
- MipsKernTLBInvalidException, /* TLB miss (store) */
+ MipsTLBInvalidException,/* TLB miss (load or instr. fetch) */
+ MipsTLBInvalidException,/* TLB miss (store) */
MipsKernGenException, /* address error (load or I-fetch) */
MipsKernGenException, /* address error (store) */
MipsKernGenException, /* bus error (I-fetch) */
@@ -153,8 +153,8 @@ void (*machExceptionTable[]) (void)= {
*/
MipsUserIntr, /* 0 */
MipsUserGenException, /* 1 */
- MipsUserTLBInvalidException, /* 2 */
- MipsUserTLBInvalidException, /* 3 */
+ MipsTLBInvalidException,/* 2 */
+ MipsTLBInvalidException,/* 3 */
MipsUserGenException, /* 4 */
MipsUserGenException, /* 5 */
MipsUserGenException, /* 6 */
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