Commit | Line | Data |
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1da177e4 LT |
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> | |
1da177e4 | 10 | |
1da177e4 | 11 | #include <asm/mipsregs.h> |
80e8bd26 | 12 | #include <asm/mmu_context.h> |
1da177e4 LT |
13 | #include <asm/page.h> |
14 | #include <asm/pgtable.h> | |
40df3831 | 15 | #include <asm/tlbdebug.h> |
1da177e4 | 16 | |
69ed25b8 | 17 | static void dump_tlb(int first, int last) |
1da177e4 LT |
18 | { |
19 | int i; | |
20 | unsigned int asid; | |
21 | unsigned long entryhi, entrylo0; | |
22 | ||
80e8bd26 | 23 | asid = read_c0_entryhi() & ASID_MASK; |
1da177e4 LT |
24 | |
25 | for (i = first; i <= last; i++) { | |
26 | write_c0_index(i<<8); | |
27 | __asm__ __volatile__( | |
28 | ".set\tnoreorder\n\t" | |
29 | "tlbr\n\t" | |
30 | "nop\n\t" | |
31 | ".set\treorder"); | |
70342287 | 32 | entryhi = read_c0_entryhi(); |
1da177e4 LT |
33 | entrylo0 = read_c0_entrylo0(); |
34 | ||
35 | /* Unused entries have a virtual address of KSEG0. */ | |
48269c78 JH |
36 | if ((entryhi & PAGE_MASK) != KSEG0 && |
37 | (entrylo0 & R3K_ENTRYLO_G || | |
38 | (entryhi & ASID_MASK) == asid)) { | |
1da177e4 LT |
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]", | |
432d9ecb | 46 | entryhi & PAGE_MASK, |
80e8bd26 | 47 | entryhi & ASID_MASK, |
1da177e4 | 48 | entrylo0 & PAGE_MASK, |
d7f5499d JH |
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); | |
1da177e4 LT |
53 | } |
54 | } | |
55 | printk("\n"); | |
56 | ||
57 | write_c0_entryhi(asid); | |
58 | } | |
59 | ||
60 | void dump_tlb_all(void) | |
61 | { | |
62 | dump_tlb(0, current_cpu_data.tlbsize - 1); | |
63 | } |