projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 LT |
11 | #include <asm/mipsregs.h> |
| 12 | #include <asm/page.h> | |
| 13 | #include <asm/pgtable.h> | |
| 40df3831 | 14 | #include <asm/tlbdebug.h> |
| 1da177e4 LT |
15 | |
| 16 | extern int r3k_have_wired_reg; /* defined in tlb-r3k.c */ | |
| 17 | ||
| 69ed25b8 | 18 | static void dump_tlb(int first, int last) |
| 1da177e4 LT |
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 | ||
| 60 | void dump_tlb_all(void) | |
| 61 | { | |
| 62 | dump_tlb(0, current_cpu_data.tlbsize - 1); | |
| 63 | } |