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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-07-09 01:34:50 -0400
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-07-14 00:13:52 -0400
commit03247157f73912c98baa918cf46b98ee5483d7f8 (patch)
tree9ef0f92b29c866c9581911f5329f743390bef286 /arch/powerpc/xmon
parentff82c319e6327b12cd94c5c57754abff243ab3e4 (diff)
powerpc/book3e: Add TLB dump in xmon for Book3E
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/xmon')
-rw-r--r--arch/powerpc/xmon/xmon.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 8bad7d5f32af..0554445200bf 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -155,6 +155,9 @@ static int do_spu_cmd(void);
155#ifdef CONFIG_44x 155#ifdef CONFIG_44x
156static void dump_tlb_44x(void); 156static void dump_tlb_44x(void);
157#endif 157#endif
158#ifdef CONFIG_PPC_BOOK3E
159static void dump_tlb_book3e(void);
160#endif
158 161
159static int xmon_no_auto_backtrace; 162static int xmon_no_auto_backtrace;
160 163
@@ -888,6 +891,11 @@ cmds(struct pt_regs *excp)
888 dump_tlb_44x(); 891 dump_tlb_44x();
889 break; 892 break;
890#endif 893#endif
894#ifdef CONFIG_PPC_BOOK3E
895 case 'u':
896 dump_tlb_book3e();
897 break;
898#endif
891 default: 899 default:
892 printf("Unrecognized command: "); 900 printf("Unrecognized command: ");
893 do { 901 do {
@@ -2701,6 +2709,150 @@ static void dump_tlb_44x(void)
2701} 2709}
2702#endif /* CONFIG_44x */ 2710#endif /* CONFIG_44x */
2703 2711
2712#ifdef CONFIG_PPC_BOOK3E
2713static void dump_tlb_book3e(void)
2714{
2715 u32 mmucfg, pidmask, lpidmask;
2716 u64 ramask;
2717 int i, tlb, ntlbs, pidsz, lpidsz, rasz, lrat = 0;
2718 int mmu_version;
2719 static const char *pgsz_names[] = {
2720 " 1K",
2721 " 2K",
2722 " 4K",
2723 " 8K",
2724 " 16K",
2725 " 32K",
2726 " 64K",
2727 "128K",
2728 "256K",
2729 "512K",
2730 " 1M",
2731 " 2M",
2732 " 4M",
2733 " 8M",
2734 " 16M",
2735 " 32M",
2736 " 64M",
2737 "128M",
2738 "256M",
2739 "512M",
2740 " 1G",
2741 " 2G",
2742 " 4G",
2743 " 8G",
2744 " 16G",
2745 " 32G",
2746 " 64G",
2747 "128G",
2748 "256G",
2749 "512G",
2750 " 1T",
2751 " 2T",
2752 };
2753
2754 /* Gather some infos about the MMU */
2755 mmucfg = mfspr(SPRN_MMUCFG);
2756 mmu_version = (mmucfg & 3) + 1;
2757 ntlbs = ((mmucfg >> 2) & 3) + 1;
2758 pidsz = ((mmucfg >> 6) & 0x1f) + 1;
2759 lpidsz = (mmucfg >> 24) & 0xf;
2760 rasz = (mmucfg >> 16) & 0x7f;
2761 if ((mmu_version > 1) && (mmucfg & 0x10000))
2762 lrat = 1;
2763 printf("Book3E MMU MAV=%d.0,%d TLBs,%d-bit PID,%d-bit LPID,%d-bit RA\n",
2764 mmu_version, ntlbs, pidsz, lpidsz, rasz);
2765 pidmask = (1ul << pidsz) - 1;
2766 lpidmask = (1ul << lpidsz) - 1;
2767 ramask = (1ull << rasz) - 1;
2768
2769 for (tlb = 0; tlb < ntlbs; tlb++) {
2770 u32 tlbcfg;
2771 int nent, assoc, new_cc = 1;
2772 printf("TLB %d:\n------\n", tlb);
2773 switch(tlb) {
2774 case 0:
2775 tlbcfg = mfspr(SPRN_TLB0CFG);
2776 break;
2777 case 1:
2778 tlbcfg = mfspr(SPRN_TLB1CFG);
2779 break;
2780 case 2:
2781 tlbcfg = mfspr(SPRN_TLB2CFG);
2782 break;
2783 case 3:
2784 tlbcfg = mfspr(SPRN_TLB3CFG);
2785 break;
2786 default:
2787 printf("Unsupported TLB number !\n");
2788 continue;
2789 }
2790 nent = tlbcfg & 0xfff;
2791 assoc = (tlbcfg >> 24) & 0xff;
2792 for (i = 0; i < nent; i++) {
2793 u32 mas0 = MAS0_TLBSEL(tlb);
2794 u32 mas1 = MAS1_TSIZE(BOOK3E_PAGESZ_4K);
2795 u64 mas2 = 0;
2796 u64 mas7_mas3;
2797 int esel = i, cc = i;
2798
2799 if (assoc != 0) {
2800 cc = i / assoc;
2801 esel = i % assoc;
2802 mas2 = cc * 0x1000;
2803 }
2804
2805 mas0 |= MAS0_ESEL(esel);
2806 mtspr(SPRN_MAS0, mas0);
2807 mtspr(SPRN_MAS1, mas1);
2808 mtspr(SPRN_MAS2, mas2);
2809 asm volatile("tlbre 0,0,0" : : : "memory");
2810 mas1 = mfspr(SPRN_MAS1);
2811 mas2 = mfspr(SPRN_MAS2);
2812 mas7_mas3 = mfspr(SPRN_MAS7_MAS3);
2813 if (assoc && (i % assoc) == 0)
2814 new_cc = 1;
2815 if (!(mas1 & MAS1_VALID))
2816 continue;
2817 if (assoc == 0)
2818 printf("%04x- ", i);
2819 else if (new_cc)
2820 printf("%04x-%c", cc, 'A' + esel);
2821 else
2822 printf(" |%c", 'A' + esel);
2823 new_cc = 0;
2824 printf(" %016llx %04x %s %c%c AS%c",
2825 mas2 & ~0x3ffull,
2826 (mas1 >> 16) & 0x3fff,
2827 pgsz_names[(mas1 >> 7) & 0x1f],
2828 mas1 & MAS1_IND ? 'I' : ' ',
2829 mas1 & MAS1_IPROT ? 'P' : ' ',
2830 mas1 & MAS1_TS ? '1' : '0');
2831 printf(" %c%c%c%c%c%c%c",
2832 mas2 & MAS2_X0 ? 'a' : ' ',
2833 mas2 & MAS2_X1 ? 'v' : ' ',
2834 mas2 & MAS2_W ? 'w' : ' ',
2835 mas2 & MAS2_I ? 'i' : ' ',
2836 mas2 & MAS2_M ? 'm' : ' ',
2837 mas2 & MAS2_G ? 'g' : ' ',
2838 mas2 & MAS2_E ? 'e' : ' ');
2839 printf(" %016llx", mas7_mas3 & ramask & ~0x7ffull);
2840 if (mas1 & MAS1_IND)
2841 printf(" %s\n",
2842 pgsz_names[(mas7_mas3 >> 1) & 0x1f]);
2843 else
2844 printf(" U%c%c%c S%c%c%c\n",
2845 mas7_mas3 & MAS3_UX ? 'x' : ' ',
2846 mas7_mas3 & MAS3_UW ? 'w' : ' ',
2847 mas7_mas3 & MAS3_UR ? 'r' : ' ',
2848 mas7_mas3 & MAS3_SX ? 'x' : ' ',
2849 mas7_mas3 & MAS3_SW ? 'w' : ' ',
2850 mas7_mas3 & MAS3_SR ? 'r' : ' ');
2851 }
2852 }
2853}
2854#endif /* CONFIG_PPC_BOOK3E */
2855
2704static void xmon_init(int enable) 2856static void xmon_init(int enable)
2705{ 2857{
2706#ifdef CONFIG_PPC_ISERIES 2858#ifdef CONFIG_PPC_ISERIES
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