[MIPS] Unify dump_tlb
Unify lib-{32,64}/dump_tlb.c into lib/dump_tlb.c and move
lib-32/r3k_dump_tlb.c to lib directory.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Atsushi Nemoto
committed by
Ralf Baechle
Ralf Baechle
parent
f6e2373ad6
commit
4becef1d85
242
arch/mips/lib/dump_tlb.c
Normal file
242
arch/mips/lib/dump_tlb.c
Normal file
@ -0,0 +1,242 @@
|
||||
/*
|
||||
* Dump R4x00 TLB for debugging purposes.
|
||||
*
|
||||
* Copyright (C) 1994, 1995 by Waldorf Electronics, written by Ralf Baechle.
|
||||
* Copyright (C) 1999 by Silicon Graphics, Inc.
|
||||
*/
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/string.h>
|
||||
|
||||
#include <asm/bootinfo.h>
|
||||
#include <asm/cachectl.h>
|
||||
#include <asm/cpu.h>
|
||||
#include <asm/mipsregs.h>
|
||||
#include <asm/page.h>
|
||||
#include <asm/pgtable.h>
|
||||
|
||||
static inline const char *msk2str(unsigned int mask)
|
||||
{
|
||||
switch (mask) {
|
||||
case PM_4K: return "4kb";
|
||||
case PM_16K: return "16kb";
|
||||
case PM_64K: return "64kb";
|
||||
case PM_256K: return "256kb";
|
||||
#ifndef CONFIG_CPU_VR41XX
|
||||
case PM_1M: return "1Mb";
|
||||
case PM_4M: return "4Mb";
|
||||
case PM_16M: return "16Mb";
|
||||
case PM_64M: return "64Mb";
|
||||
case PM_256M: return "256Mb";
|
||||
#endif
|
||||
}
|
||||
return "";
|
||||
}
|
||||
|
||||
#define BARRIER() \
|
||||
__asm__ __volatile__( \
|
||||
".set\tnoreorder\n\t" \
|
||||
"nop;nop;nop;nop;nop;nop;nop\n\t" \
|
||||
".set\treorder");
|
||||
|
||||
void dump_tlb(int first, int last)
|
||||
{
|
||||
unsigned long s_entryhi, entryhi, asid;
|
||||
unsigned long long entrylo0, entrylo1;
|
||||
unsigned int s_index, pagemask, c0, c1, i;
|
||||
|
||||
s_entryhi = read_c0_entryhi();
|
||||
s_index = read_c0_index();
|
||||
asid = s_entryhi & 0xff;
|
||||
|
||||
for (i = first; i <= last; i++) {
|
||||
write_c0_index(i);
|
||||
BARRIER();
|
||||
tlb_read();
|
||||
BARRIER();
|
||||
pagemask = read_c0_pagemask();
|
||||
entryhi = read_c0_entryhi();
|
||||
entrylo0 = read_c0_entrylo0();
|
||||
entrylo1 = read_c0_entrylo1();
|
||||
|
||||
/* Unused entries have a virtual address of CKSEG0. */
|
||||
if ((entryhi & ~0x1ffffUL) != CKSEG0
|
||||
&& (entryhi & 0xff) == asid) {
|
||||
#ifdef CONFIG_32BIT
|
||||
int width = 8;
|
||||
#else
|
||||
int width = 11;
|
||||
#endif
|
||||
/*
|
||||
* Only print entries in use
|
||||
*/
|
||||
printk("Index: %2d pgmask=%s ", i, msk2str(pagemask));
|
||||
|
||||
c0 = (entrylo0 >> 3) & 7;
|
||||
c1 = (entrylo1 >> 3) & 7;
|
||||
|
||||
printk("va=%0*lx asid=%02lx\n",
|
||||
width, (entryhi & ~0x1fffUL),
|
||||
entryhi & 0xff);
|
||||
printk("\t[pa=%0*llx c=%d d=%d v=%d g=%d] ",
|
||||
width,
|
||||
(entrylo0 << 6) & PAGE_MASK, c0,
|
||||
(entrylo0 & 4) ? 1 : 0,
|
||||
(entrylo0 & 2) ? 1 : 0,
|
||||
(entrylo0 & 1) ? 1 : 0);
|
||||
printk("[pa=%0*llx c=%d d=%d v=%d g=%d]\n",
|
||||
width,
|
||||
(entrylo1 << 6) & PAGE_MASK, c1,
|
||||
(entrylo1 & 4) ? 1 : 0,
|
||||
(entrylo1 & 2) ? 1 : 0,
|
||||
(entrylo1 & 1) ? 1 : 0);
|
||||
}
|
||||
}
|
||||
printk("\n");
|
||||
|
||||
write_c0_entryhi(s_entryhi);
|
||||
write_c0_index(s_index);
|
||||
}
|
||||
|
||||
void dump_tlb_all(void)
|
||||
{
|
||||
dump_tlb(0, current_cpu_data.tlbsize - 1);
|
||||
}
|
||||
|
||||
void dump_tlb_wired(void)
|
||||
{
|
||||
int wired;
|
||||
|
||||
wired = read_c0_wired();
|
||||
printk("Wired: %d", wired);
|
||||
dump_tlb(0, read_c0_wired());
|
||||
}
|
||||
|
||||
void dump_tlb_addr(unsigned long addr)
|
||||
{
|
||||
unsigned int flags, oldpid;
|
||||
int index;
|
||||
|
||||
local_irq_save(flags);
|
||||
oldpid = read_c0_entryhi() & 0xff;
|
||||
BARRIER();
|
||||
write_c0_entryhi((addr & PAGE_MASK) | oldpid);
|
||||
BARRIER();
|
||||
tlb_probe();
|
||||
BARRIER();
|
||||
index = read_c0_index();
|
||||
write_c0_entryhi(oldpid);
|
||||
local_irq_restore(flags);
|
||||
|
||||
if (index < 0) {
|
||||
printk("No entry for address 0x%08lx in TLB\n", addr);
|
||||
return;
|
||||
}
|
||||
|
||||
printk("Entry %d maps address 0x%08lx\n", index, addr);
|
||||
dump_tlb(index, index);
|
||||
}
|
||||
|
||||
void dump_tlb_nonwired(void)
|
||||
{
|
||||
dump_tlb(read_c0_wired(), current_cpu_data.tlbsize - 1);
|
||||
}
|
||||
|
||||
void dump_list_process(struct task_struct *t, void *address)
|
||||
{
|
||||
pgd_t *page_dir, *pgd;
|
||||
pud_t *pud;
|
||||
pmd_t *pmd;
|
||||
pte_t *pte, page;
|
||||
unsigned long addr, val;
|
||||
int width = sizeof(long) * 2;
|
||||
|
||||
addr = (unsigned long) address;
|
||||
|
||||
printk("Addr == %08lx\n", addr);
|
||||
#ifdef CONFIG_64BIT
|
||||
printk("tasks->mm.pgd == %08lx\n", (unsigned long) t->mm->pgd);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_64BIT
|
||||
page_dir = pgd_offset(t->mm, 0UL);
|
||||
pgd = pgd_offset(t->mm, addr);
|
||||
#else
|
||||
if (addr > KSEG0) {
|
||||
page_dir = pgd_offset_k(0);
|
||||
pgd = pgd_offset_k(addr);
|
||||
} else if (t->mm) {
|
||||
page_dir = pgd_offset(t->mm, 0);
|
||||
pgd = pgd_offset(t->mm, addr);
|
||||
} else {
|
||||
printk("Current thread has no mm\n");
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
printk("page_dir == %0*lx\n", width, (unsigned long) page_dir);
|
||||
printk("pgd == %0*lx\n", width, (unsigned long) pgd);
|
||||
|
||||
pud = pud_offset(pgd, addr);
|
||||
printk("pud == %0*lx\n", width, (unsigned long) pud);
|
||||
|
||||
pmd = pmd_offset(pud, addr);
|
||||
printk("pmd == %0*lx\n", width, (unsigned long) pmd);
|
||||
|
||||
pte = pte_offset(pmd, addr);
|
||||
printk("pte == %0*lx\n", width, (unsigned long) pte);
|
||||
|
||||
page = *pte;
|
||||
#ifdef CONFIG_64BIT_PHYS_ADDR
|
||||
printk("page == %08Lx\n", pte_val(page));
|
||||
#else
|
||||
printk("page == %0*lx\n", width, pte_val(page));
|
||||
#endif
|
||||
|
||||
val = pte_val(page);
|
||||
if (val & _PAGE_PRESENT) printk("present ");
|
||||
if (val & _PAGE_READ) printk("read ");
|
||||
if (val & _PAGE_WRITE) printk("write ");
|
||||
if (val & _PAGE_ACCESSED) printk("accessed ");
|
||||
if (val & _PAGE_MODIFIED) printk("modified ");
|
||||
if (val & _PAGE_R4KBUG) printk("r4kbug ");
|
||||
if (val & _PAGE_GLOBAL) printk("global ");
|
||||
if (val & _PAGE_VALID) printk("valid ");
|
||||
printk("\n");
|
||||
}
|
||||
|
||||
void dump_list_current(void *address)
|
||||
{
|
||||
dump_list_process(current, address);
|
||||
}
|
||||
|
||||
unsigned long vtop(void *address)
|
||||
{
|
||||
pgd_t *pgd;
|
||||
pud_t *pud;
|
||||
pmd_t *pmd;
|
||||
pte_t *pte;
|
||||
unsigned long addr, paddr;
|
||||
|
||||
addr = (unsigned long) address;
|
||||
pgd = pgd_offset(current->mm, addr);
|
||||
pud = pud_offset(pgd, addr);
|
||||
pmd = pmd_offset(pud, addr);
|
||||
pte = pte_offset(pmd, addr);
|
||||
paddr = (CKSEG1 | (unsigned int) pte_val(*pte)) & PAGE_MASK;
|
||||
paddr |= (addr & ~PAGE_MASK);
|
||||
|
||||
return paddr;
|
||||
}
|
||||
|
||||
void dump16(unsigned long *p)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < 8; i++) {
|
||||
printk("*%08lx == %08lx, ", (unsigned long)p, *p);
|
||||
p++;
|
||||
printk("*%08lx == %08lx\n", (unsigned long)p, *p);
|
||||
p++;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user