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 | |
3c865dd9 JH |
17 | extern int r3k_have_wired_reg; |
18 | ||
19 | void dump_tlb_regs(void) | |
20 | { | |
21 | pr_info("Index : %0x\n", read_c0_index()); | |
22 | pr_info("EntryHi : %0lx\n", read_c0_entryhi()); | |
23 | pr_info("EntryLo : %0lx\n", read_c0_entrylo0()); | |
24 | if (r3k_have_wired_reg) | |
25 | pr_info("Wired : %0x\n", read_c0_wired()); | |
26 | } | |
27 | ||
69ed25b8 | 28 | static void dump_tlb(int first, int last) |
1da177e4 LT |
29 | { |
30 | int i; | |
31 | unsigned int asid; | |
4edf00a4 | 32 | unsigned long entryhi, entrylo0, asid_mask; |
1da177e4 | 33 | |
4edf00a4 PB |
34 | asid_mask = cpu_asid_mask(¤t_cpu_data); |
35 | asid = read_c0_entryhi() & asid_mask; | |
1da177e4 LT |
36 | |
37 | for (i = first; i <= last; i++) { | |
38 | write_c0_index(i<<8); | |
39 | __asm__ __volatile__( | |
40 | ".set\tnoreorder\n\t" | |
41 | "tlbr\n\t" | |
42 | "nop\n\t" | |
43 | ".set\treorder"); | |
70342287 | 44 | entryhi = read_c0_entryhi(); |
1da177e4 LT |
45 | entrylo0 = read_c0_entrylo0(); |
46 | ||
47 | /* Unused entries have a virtual address of KSEG0. */ | |
48269c78 JH |
48 | if ((entryhi & PAGE_MASK) != KSEG0 && |
49 | (entrylo0 & R3K_ENTRYLO_G || | |
4edf00a4 | 50 | (entryhi & asid_mask) == asid)) { |
1da177e4 LT |
51 | /* |
52 | * Only print entries in use | |
53 | */ | |
54 | printk("Index: %2d ", i); | |
55 | ||
56 | printk("va=%08lx asid=%08lx" | |
57 | " [pa=%06lx n=%d d=%d v=%d g=%d]", | |
432d9ecb | 58 | entryhi & PAGE_MASK, |
4edf00a4 | 59 | entryhi & asid_mask, |
1da177e4 | 60 | entrylo0 & PAGE_MASK, |
d7f5499d JH |
61 | (entrylo0 & R3K_ENTRYLO_N) ? 1 : 0, |
62 | (entrylo0 & R3K_ENTRYLO_D) ? 1 : 0, | |
63 | (entrylo0 & R3K_ENTRYLO_V) ? 1 : 0, | |
64 | (entrylo0 & R3K_ENTRYLO_G) ? 1 : 0); | |
1da177e4 LT |
65 | } |
66 | } | |
67 | printk("\n"); | |
68 | ||
69 | write_c0_entryhi(asid); | |
70 | } | |
71 | ||
72 | void dump_tlb_all(void) | |
73 | { | |
74 | dump_tlb(0, current_cpu_data.tlbsize - 1); | |
75 | } |