powerpc/book3e: Add TLB dump in xmon for Book3E (03247157) · Commits · e / devices / android_kernel_xiaomi_markw

arch/powerpc/xmon/xmon.c

+152 −0

Original line number	Diff line number	Diff line
		@@ -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;

		@@ -887,6 +890,11 @@ cmds(struct pt_regs *excp)
		case 'u':
		dump_tlb_44x();
		break;
		#endif
		#ifdef CONFIG_PPC_BOOK3E
		case 'u':
		dump_tlb_book3e();
		break;
		#endif
		default:
		printf("Unrecognized command: ");
		@@ -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