1/* 2 * Dump R3000 TLB for debugging purposes. 3 * 4 * Copyright (C) 1994, 1995 by Waldorf Electronics, written by Ralf Baechle. 5 * Copyright (C) 1999 by Silicon Graphics, Inc. 6 * Copyright (C) 1999 by Harald Koerfgen 7 */ 8#include <linux/kernel.h> 9#include <linux/mm.h> 10 11#include <asm/mipsregs.h> 12#include <asm/page.h> 13#include <asm/pgtable.h> 14#include <asm/tlbdebug.h> 15 16extern int r3k_have_wired_reg; /* defined in tlb-r3k.c */ 17 18static void dump_tlb(int first, int last) 19{ 20 int i; 21 unsigned int asid; 22 unsigned long entryhi, entrylo0; 23 24 asid = read_c0_entryhi() & 0xfc0; 25 26 for (i = first; i <= last; i++) { 27 write_c0_index(i<<8); 28 __asm__ __volatile__( 29 ".set\tnoreorder\n\t" 30 "tlbr\n\t" 31 "nop\n\t" 32 ".set\treorder"); 33 entryhi = read_c0_entryhi(); 34 entrylo0 = read_c0_entrylo0(); 35 36 /* Unused entries have a virtual address of KSEG0. */ 37 if ((entryhi & 0xffffe000) != 0x80000000 38 && (entryhi & 0xfc0) == asid) { 39 /* 40 * Only print entries in use 41 */ 42 printk("Index: %2d ", i); 43 44 printk("va=%08lx asid=%08lx" 45 " [pa=%06lx n=%d d=%d v=%d g=%d]", 46 (entryhi & 0xffffe000), 47 entryhi & 0xfc0, 48 entrylo0 & PAGE_MASK, 49 (entrylo0 & (1 << 11)) ? 1 : 0, 50 (entrylo0 & (1 << 10)) ? 1 : 0, 51 (entrylo0 & (1 << 9)) ? 1 : 0, 52 (entrylo0 & (1 << 8)) ? 1 : 0); 53 } 54 } 55 printk("\n"); 56 57 write_c0_entryhi(asid); 58} 59 60void dump_tlb_all(void) 61{ 62 dump_tlb(0, current_cpu_data.tlbsize - 1); 63} 64