2 * Dump R3000 TLB for debugging purposes.
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
8 #include <linux/kernel.h>
11 #include <asm/mipsregs.h>
12 #include <asm/mmu_context.h>
14 #include <asm/pgtable.h>
15 #include <asm/tlbdebug.h>
17 static void dump_tlb(int first, int last)
21 unsigned long entryhi, entrylo0;
23 asid = read_c0_entryhi() & ASID_MASK;
25 for (i = first; i <= last; i++) {
32 entryhi = read_c0_entryhi();
33 entrylo0 = read_c0_entrylo0();
35 /* Unused entries have a virtual address of KSEG0. */
36 if ((entryhi & PAGE_MASK) != KSEG0 &&
37 (entrylo0 & R3K_ENTRYLO_G ||
38 (entryhi & ASID_MASK) == asid)) {
40 * Only print entries in use
42 printk("Index: %2d ", i);
44 printk("va=%08lx asid=%08lx"
45 " [pa=%06lx n=%d d=%d v=%d g=%d]",
49 (entrylo0 & R3K_ENTRYLO_N) ? 1 : 0,
50 (entrylo0 & R3K_ENTRYLO_D) ? 1 : 0,
51 (entrylo0 & R3K_ENTRYLO_V) ? 1 : 0,
52 (entrylo0 & R3K_ENTRYLO_G) ? 1 : 0);
57 write_c0_entryhi(asid);
60 void dump_tlb_all(void)
62 dump_tlb(0, current_cpu_data.tlbsize - 1);