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/*
* Dump R4x00 TLB for debugging purposes.
*
* Copyright (C) 1994, 1995 by Waldorf Electronics,
* written by Ralf Baechle.
*/
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <asm/bootinfo.h>
#include <asm/cache.h>
#include <asm/mipsconfig.h>
#include <asm/mipsregs.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/uaccess.h>
void
dump_tlb(int first, int last)
{
int i;
int wired;
unsigned int pagemask;
unsigned long long entryhi, entrylo0, entrylo1;
wired = read_32bit_cp0_register(CP0_WIRED);
printk("Wired: %d", wired);
for(i=first;i<last;i++)
{
write_32bit_cp0_register(CP0_INDEX, i);
__asm__ __volatile__(
".set\tmips3\n\t"
".set\tnoreorder\n\t"
"nop;nop;nop;nop\n\t"
"tlbr\n\t"
"nop;nop;nop;nop\n\t"
".set\treorder\n\t"
".set\tmips0\n\t");
pagemask = read_32bit_cp0_register(CP0_PAGEMASK);
entryhi = read_64bit_cp0_register(CP0_ENTRYHI);
entrylo0 = read_64bit_cp0_register(CP0_ENTRYLO0);
entrylo1 = read_64bit_cp0_register(CP0_ENTRYLO1);
if((entrylo0|entrylo1) & 2)
{
/*
* Only print entries in use
*/
printk("\nIndex: %2d %08x", i, pagemask);
printk(" %08x %08x", (unsigned int)(entryhi >> 32),
(unsigned int) entryhi);
printk(" %08x %08x", (unsigned int)(entrylo0 >> 32),
(unsigned int) entrylo0);
printk(" %08x %08x", (unsigned int)(entrylo1 >> 32),
(unsigned int) entrylo1);
}
}
printk("\n");
}
void
dump_tlb_all(void)
{
dump_tlb(0, mips_tlb_entries - 1);
}
void
dump_tlb_wired(void)
{
dump_tlb(0, read_32bit_cp0_register(CP0_WIRED));
}
void
dump_tlb_nonwired(void)
{
dump_tlb(read_32bit_cp0_register(CP0_WIRED), mips_tlb_entries - 1);
}
void
dump_list_process(struct task_struct *t, void *address)
{
pgd_t *page_dir, *pgd;
pmd_t *pmd;
pte_t *pte, page;
unsigned int addr;
addr = (unsigned int) address;
printk("Addr == %08x\n", addr);
printk("tasks->tss.pg_dir == %08x\n", (unsigned int) t->tss.pg_dir);
printk("tasks->mm.pgd == %08x\n", (unsigned int) t->mm->pgd);
page_dir = pgd_offset(t->mm, 0);
printk("page_dir == %08x\n", (unsigned int) page_dir);
pgd = pgd_offset(t->mm, addr);
printk("pgd == %08x, ", (unsigned int) pgd);
pmd = pmd_offset(pgd, addr);
printk("pmd == %08x, ", (unsigned int) pmd);
pte = pte_offset(pmd, addr);
printk("pte == %08x, ", (unsigned int) pte);
page = *pte;
printk("page == %08x\n", (unsigned int) pte_val(page));
}
void
dump_list_current(void *address)
{
unsigned int addr, *pt;
dump_list_process(current, address);
addr = (unsigned int) address;
pt = (unsigned int *) TLB_ROOT + (addr >> 22);
printk("L1: *%08x == ", (unsigned int) pt);
printk("%08x, ", *pt);
pt = (unsigned int *) (TLBMAP + ((addr >> 10) & ~3));
printk("L2: *%08x == ", (unsigned int) pt);
printk("%08x\n", *pt);
}
unsigned int
vtop(void *address)
{
pgd_t *pgd;
pmd_t *pmd;
pte_t *pte;
unsigned int addr, paddr;
addr = (unsigned long) address;
pgd = pgd_offset(current->mm, addr);
pmd = pmd_offset(pgd, addr);
pte = pte_offset(pmd, addr);
paddr = (KSEG1 | (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, (unsigned long)*p++);
printk("*%08lx == %08lx\n",
(unsigned long)p, (unsigned long)*p++);
}
}
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