projects / deliverable / 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 | 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 | } |