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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-07-09 15:34:50 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-07-14 14:13:52 +1000
commit03247157f73912c98baa918cf46b98ee5483d7f8 (patch)
tree9ef0f92b29c866c9581911f5329f743390bef286 /arch/powerpc/xmon
parentff82c319e6327b12cd94c5c57754abff243ab3e4 (diff)
downloadlinaro-lsk-03247157f73912c98baa918cf46b98ee5483d7f8.tar.gz
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 8bad7d5f32a..0554445200b 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -155,6 +155,9 @@ static int do_spu_cmd(void);
#ifdef CONFIG_44x
static void dump_tlb_44x(void);
#endif
+#ifdef CONFIG_PPC_BOOK3E
+static void dump_tlb_book3e(void);
+#endif
static int xmon_no_auto_backtrace;
@@ -888,6 +891,11 @@ cmds(struct pt_regs *excp)
dump_tlb_44x();
break;
#endif
+#ifdef CONFIG_PPC_BOOK3E
+ case 'u':
+ dump_tlb_book3e();
+ break;
+#endif
default:
printf("Unrecognized command: ");
do {
@@ -2701,6 +2709,150 @@ static void dump_tlb_44x(void)
}
#endif /* CONFIG_44x */
+#ifdef CONFIG_PPC_BOOK3E
+static void dump_tlb_book3e(void)
+{
+ u32 mmucfg, pidmask, lpidmask;
+ u64 ramask;
+ int i, tlb, ntlbs, pidsz, lpidsz, rasz, lrat = 0;
+ int mmu_version;
+ static const char *pgsz_names[] = {
+ " 1K",
+ " 2K",
+ " 4K",
+ " 8K",
+ " 16K",
+ " 32K",
+ " 64K",
+ "128K",
+ "256K",
+ "512K",
+ " 1M",
+ " 2M",
+ " 4M",
+ " 8M",
+ " 16M",
+ " 32M",
+ " 64M",
+ "128M",
+ "256M",
+ "512M",
+ " 1G",
+ " 2G",
+ " 4G",
+ " 8G",
+ " 16G",
+ " 32G",
+ " 64G",
+ "128G",
+ "256G",
+ "512G",
+ " 1T",
+ " 2T",
+ };
+
+ /* Gather some infos about the MMU */
+ mmucfg = mfspr(SPRN_MMUCFG);
+ mmu_version = (mmucfg & 3) + 1;
+ ntlbs = ((mmucfg >> 2) & 3) + 1;
+ pidsz = ((mmucfg >> 6) & 0x1f) + 1;
+ lpidsz = (mmucfg >> 24) & 0xf;
+ rasz = (mmucfg >> 16) & 0x7f;
+ if ((mmu_version > 1) && (mmucfg & 0x10000))
+ lrat = 1;
+ printf("Book3E MMU MAV=%d.0,%d TLBs,%d-bit PID,%d-bit LPID,%d-bit RA\n",
+ mmu_version, ntlbs, pidsz, lpidsz, rasz);
+ pidmask = (1ul << pidsz) - 1;
+ lpidmask = (1ul << lpidsz) - 1;
+ ramask = (1ull << rasz) - 1;
+
+ for (tlb = 0; tlb < ntlbs; tlb++) {
+ u32 tlbcfg;
+ int nent, assoc, new_cc = 1;
+ printf("TLB %d:\n------\n", tlb);
+ switch(tlb) {
+ case 0:
+ tlbcfg = mfspr(SPRN_TLB0CFG);
+ break;
+ case 1:
+ tlbcfg = mfspr(SPRN_TLB1CFG);
+ break;
+ case 2:
+ tlbcfg = mfspr(SPRN_TLB2CFG);
+ break;
+ case 3:
+ tlbcfg = mfspr(SPRN_TLB3CFG);
+ break;
+ default:
+ printf("Unsupported TLB number !\n");
+ continue;
+ }
+ nent = tlbcfg & 0xfff;
+ assoc = (tlbcfg >> 24) & 0xff;
+ for (i = 0; i < nent; i++) {
+ u32 mas0 = MAS0_TLBSEL(tlb);
+ u32 mas1 = MAS1_TSIZE(BOOK3E_PAGESZ_4K);
+ u64 mas2 = 0;
+ u64 mas7_mas3;
+ int esel = i, cc = i;
+
+ if (assoc != 0) {
+ cc = i / assoc;
+ esel = i % assoc;
+ mas2 = cc * 0x1000;
+ }
+
+ mas0 |= MAS0_ESEL(esel);
+ mtspr(SPRN_MAS0, mas0);
+ mtspr(SPRN_MAS1, mas1);
+ mtspr(SPRN_MAS2, mas2);
+ asm volatile("tlbre 0,0,0" : : : "memory");
+ mas1 = mfspr(SPRN_MAS1);
+ mas2 = mfspr(SPRN_MAS2);
+ mas7_mas3 = mfspr(SPRN_MAS7_MAS3);
+ if (assoc && (i % assoc) == 0)
+ new_cc = 1;
+ if (!(mas1 & MAS1_VALID))
+ continue;
+ if (assoc == 0)
+ printf("%04x- ", i);
+ else if (new_cc)
+ printf("%04x-%c", cc, 'A' + esel);
+ else
+ printf(" |%c", 'A' + esel);
+ new_cc = 0;
+ printf(" %016llx %04x %s %c%c AS%c",
+ mas2 & ~0x3ffull,
+ (mas1 >> 16) & 0x3fff,
+ pgsz_names[(mas1 >> 7) & 0x1f],
+ mas1 & MAS1_IND ? 'I' : ' ',
+ mas1 & MAS1_IPROT ? 'P' : ' ',
+ mas1 & MAS1_TS ? '1' : '0');
+ printf(" %c%c%c%c%c%c%c",
+ mas2 & MAS2_X0 ? 'a' : ' ',
+ mas2 & MAS2_X1 ? 'v' : ' ',
+ mas2 & MAS2_W ? 'w' : ' ',
+ mas2 & MAS2_I ? 'i' : ' ',
+ mas2 & MAS2_M ? 'm' : ' ',
+ mas2 & MAS2_G ? 'g' : ' ',
+ mas2 & MAS2_E ? 'e' : ' ');
+ printf(" %016llx", mas7_mas3 & ramask & ~0x7ffull);
+ if (mas1 & MAS1_IND)
+ printf(" %s\n",
+ pgsz_names[(mas7_mas3 >> 1) & 0x1f]);
+ else
+ printf(" U%c%c%c S%c%c%c\n",
+ mas7_mas3 & MAS3_UX ? 'x' : ' ',
+ mas7_mas3 & MAS3_UW ? 'w' : ' ',
+ mas7_mas3 & MAS3_UR ? 'r' : ' ',
+ mas7_mas3 & MAS3_SX ? 'x' : ' ',
+ mas7_mas3 & MAS3_SW ? 'w' : ' ',
+ mas7_mas3 & MAS3_SR ? 'r' : ' ');
+ }
+ }
+}
+#endif /* CONFIG_PPC_BOOK3E */
+
static void xmon_init(int enable)
{
#ifdef CONFIG_PPC_ISERIES