static void dump_tlb_book3e()

in xmon/xmon.c [3830:3970]

• 136 lines of code
• 32 McCabe index (conditional complexity)

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' : ' ');
		}
	}
}