sparc,sparc64: unify mm/

- move all sparc64/mm/ files to arch/sparc/mm/
- commonly named files are named _64.c
- add files to sparc/mm/Makefile preserving link order
- delete now unused sparc64/mm/Makefile
- sparc64 now finds mm/ in sparc

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 2360 deletions

diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
deleted file mode 100644
index 4bd63968400..00000000000
--- a/arch/sparc64/mm/init.c
+++ /dev/null
@@ -1,2360 +0,0 @@
-/*
- *  arch/sparc64/mm/init.c
- *
- *  Copyright (C) 1996-1999 David S. Miller (davem@caip.rutgers.edu)
- *  Copyright (C) 1997-1999 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
- 
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/mm.h>
-#include <linux/hugetlb.h>
-#include <linux/slab.h>
-#include <linux/initrd.h>
-#include <linux/swap.h>
-#include <linux/pagemap.h>
-#include <linux/poison.h>
-#include <linux/fs.h>
-#include <linux/seq_file.h>
-#include <linux/kprobes.h>
-#include <linux/cache.h>
-#include <linux/sort.h>
-#include <linux/percpu.h>
-#include <linux/lmb.h>
-#include <linux/mmzone.h>
-
-#include <asm/head.h>
-#include <asm/system.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
-#include <asm/oplib.h>
-#include <asm/iommu.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/mmu_context.h>
-#include <asm/tlbflush.h>
-#include <asm/dma.h>
-#include <asm/starfire.h>
-#include <asm/tlb.h>
-#include <asm/spitfire.h>
-#include <asm/sections.h>
-#include <asm/tsb.h>
-#include <asm/hypervisor.h>
-#include <asm/prom.h>
-#include <asm/mdesc.h>
-#include <asm/cpudata.h>
-#include <asm/irq.h>
-
-#include "init.h"
-
-unsigned long kern_linear_pte_xor[2] __read_mostly;
-
-/* A bitmap, one bit for every 256MB of physical memory.  If the bit
- * is clear, we should use a 4MB page (via kern_linear_pte_xor[0]) else
- * if set we should use a 256MB page (via kern_linear_pte_xor[1]).
- */
-unsigned long kpte_linear_bitmap[KPTE_BITMAP_BYTES / sizeof(unsigned long)];
-
-#ifndef CONFIG_DEBUG_PAGEALLOC
-/* A special kernel TSB for 4MB and 256MB linear mappings.
- * Space is allocated for this right after the trap table
- * in arch/sparc64/kernel/head.S
- */
-extern struct tsb swapper_4m_tsb[KERNEL_TSB4M_NENTRIES];
-#endif
-
-#define MAX_BANKS	32
-
-static struct linux_prom64_registers pavail[MAX_BANKS] __initdata;
-static int pavail_ents __initdata;
-
-static int cmp_p64(const void *a, const void *b)
-{
-	const struct linux_prom64_registers *x = a, *y = b;
-
-	if (x->phys_addr > y->phys_addr)
-		return 1;
-	if (x->phys_addr < y->phys_addr)
-		return -1;
-	return 0;
-}
-
-static void __init read_obp_memory(const char *property,
-				   struct linux_prom64_registers *regs,
-				   int *num_ents)
-{
-	int node = prom_finddevice("/memory");
-	int prop_size = prom_getproplen(node, property);
-	int ents, ret, i;
-
-	ents = prop_size / sizeof(struct linux_prom64_registers);
-	if (ents > MAX_BANKS) {
-		prom_printf("The machine has more %s property entries than "
-			    "this kernel can support (%d).\n",
-			    property, MAX_BANKS);
-		prom_halt();
-	}
-
-	ret = prom_getproperty(node, property, (char *) regs, prop_size);
-	if (ret == -1) {
-		prom_printf("Couldn't get %s property from /memory.\n");
-		prom_halt();
-	}
-
-	/* Sanitize what we got from the firmware, by page aligning
-	 * everything.
-	 */
-	for (i = 0; i < ents; i++) {
-		unsigned long base, size;
-
-		base = regs[i].phys_addr;
-		size = regs[i].reg_size;
-
-		size &= PAGE_MASK;
-		if (base & ~PAGE_MASK) {
-			unsigned long new_base = PAGE_ALIGN(base);
-
-			size -= new_base - base;
-			if ((long) size < 0L)
-				size = 0UL;
-			base = new_base;
-		}
-		if (size == 0UL) {
-			/* If it is empty, simply get rid of it.
-			 * This simplifies the logic of the other
-			 * functions that process these arrays.
-			 */
-			memmove(&regs[i], &regs[i + 1],
-				(ents - i - 1) * sizeof(regs[0]));
-			i--;
-			ents--;
-			continue;
-		}
-		regs[i].phys_addr = base;
-		regs[i].reg_size = size;
-	}
-
-	*num_ents = ents;
-
-	sort(regs, ents, sizeof(struct linux_prom64_registers),
-	     cmp_p64, NULL);
-}
-
-unsigned long *sparc64_valid_addr_bitmap __read_mostly;
-
-/* Kernel physical address base and size in bytes.  */
-unsigned long kern_base __read_mostly;
-unsigned long kern_size __read_mostly;
-
-/* Initial ramdisk setup */
-extern unsigned long sparc_ramdisk_image64;
-extern unsigned int sparc_ramdisk_image;
-extern unsigned int sparc_ramdisk_size;
-
-struct page *mem_map_zero __read_mostly;
-EXPORT_SYMBOL(mem_map_zero);
-
-unsigned int sparc64_highest_unlocked_tlb_ent __read_mostly;
-
-unsigned long sparc64_kern_pri_context __read_mostly;
-unsigned long sparc64_kern_pri_nuc_bits __read_mostly;
-unsigned long sparc64_kern_sec_context __read_mostly;
-
-int num_kernel_image_mappings;
-
-#ifdef CONFIG_DEBUG_DCFLUSH
-atomic_t dcpage_flushes = ATOMIC_INIT(0);
-#ifdef CONFIG_SMP
-atomic_t dcpage_flushes_xcall = ATOMIC_INIT(0);
-#endif
-#endif
-
-inline void flush_dcache_page_impl(struct page *page)
-{
-	BUG_ON(tlb_type == hypervisor);
-#ifdef CONFIG_DEBUG_DCFLUSH
-	atomic_inc(&dcpage_flushes);
-#endif
-
-#ifdef DCACHE_ALIASING_POSSIBLE
-	__flush_dcache_page(page_address(page),
-			    ((tlb_type == spitfire) &&
-			     page_mapping(page) != NULL));
-#else
-	if (page_mapping(page) != NULL &&
-	    tlb_type == spitfire)
-		__flush_icache_page(__pa(page_address(page)));
-#endif
-}
-
-#define PG_dcache_dirty		PG_arch_1
-#define PG_dcache_cpu_shift	32UL
-#define PG_dcache_cpu_mask	\
-	((1UL<<ilog2(roundup_pow_of_two(NR_CPUS)))-1UL)
-
-#define dcache_dirty_cpu(page) \
-	(((page)->flags >> PG_dcache_cpu_shift) & PG_dcache_cpu_mask)
-
-static inline void set_dcache_dirty(struct page *page, int this_cpu)
-{
-	unsigned long mask = this_cpu;
-	unsigned long non_cpu_bits;
-
-	non_cpu_bits = ~(PG_dcache_cpu_mask << PG_dcache_cpu_shift);
-	mask = (mask << PG_dcache_cpu_shift) | (1UL << PG_dcache_dirty);
-
-	__asm__ __volatile__("1:\n\t"
-			     "ldx	[%2], %%g7\n\t"
-			     "and	%%g7, %1, %%g1\n\t"
-			     "or	%%g1, %0, %%g1\n\t"
-			     "casx	[%2], %%g7, %%g1\n\t"
-			     "cmp	%%g7, %%g1\n\t"
-			     "bne,pn	%%xcc, 1b\n\t"
-			     " nop"
-			     : /* no outputs */
-			     : "r" (mask), "r" (non_cpu_bits), "r" (&page->flags)
-			     : "g1", "g7");
-}
-
-static inline void clear_dcache_dirty_cpu(struct page *page, unsigned long cpu)
-{
-	unsigned long mask = (1UL << PG_dcache_dirty);
-
-	__asm__ __volatile__("! test_and_clear_dcache_dirty\n"
-			     "1:\n\t"
-			     "ldx	[%2], %%g7\n\t"
-			     "srlx	%%g7, %4, %%g1\n\t"
-			     "and	%%g1, %3, %%g1\n\t"
-			     "cmp	%%g1, %0\n\t"
-			     "bne,pn	%%icc, 2f\n\t"
-			     " andn	%%g7, %1, %%g1\n\t"
-			     "casx	[%2], %%g7, %%g1\n\t"
-			     "cmp	%%g7, %%g1\n\t"
-			     "bne,pn	%%xcc, 1b\n\t"
-			     " nop\n"
-			     "2:"
-			     : /* no outputs */
-			     : "r" (cpu), "r" (mask), "r" (&page->flags),
-			       "i" (PG_dcache_cpu_mask),
-			       "i" (PG_dcache_cpu_shift)
-			     : "g1", "g7");
-}
-
-static inline void tsb_insert(struct tsb *ent, unsigned long tag, unsigned long pte)
-{
-	unsigned long tsb_addr = (unsigned long) ent;
-
-	if (tlb_type == cheetah_plus || tlb_type == hypervisor)
-		tsb_addr = __pa(tsb_addr);
-
-	__tsb_insert(tsb_addr, tag, pte);
-}
-
-unsigned long _PAGE_ALL_SZ_BITS __read_mostly;
-unsigned long _PAGE_SZBITS __read_mostly;
-
-void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte)
-{
-	struct mm_struct *mm;
-	struct tsb *tsb;
-	unsigned long tag, flags;
-	unsigned long tsb_index, tsb_hash_shift;
-
-	if (tlb_type != hypervisor) {
-		unsigned long pfn = pte_pfn(pte);
-		unsigned long pg_flags;
-		struct page *page;
-
-		if (pfn_valid(pfn) &&
-		    (page = pfn_to_page(pfn), page_mapping(page)) &&
-		    ((pg_flags = page->flags) & (1UL << PG_dcache_dirty))) {
-			int cpu = ((pg_flags >> PG_dcache_cpu_shift) &
-				   PG_dcache_cpu_mask);
-			int this_cpu = get_cpu();
-
-			/* This is just to optimize away some function calls
-			 * in the SMP case.
-			 */
-			if (cpu == this_cpu)
-				flush_dcache_page_impl(page);
-			else
-				smp_flush_dcache_page_impl(page, cpu);
-
-			clear_dcache_dirty_cpu(page, cpu);
-
-			put_cpu();
-		}
-	}
-
-	mm = vma->vm_mm;
-
-	tsb_index = MM_TSB_BASE;
-	tsb_hash_shift = PAGE_SHIFT;
-
-	spin_lock_irqsave(&mm->context.lock, flags);
-
-#ifdef CONFIG_HUGETLB_PAGE
-	if (mm->context.tsb_block[MM_TSB_HUGE].tsb != NULL) {
-		if ((tlb_type == hypervisor &&
-		     (pte_val(pte) & _PAGE_SZALL_4V) == _PAGE_SZHUGE_4V) ||
-		    (tlb_type != hypervisor &&
-		     (pte_val(pte) & _PAGE_SZALL_4U) == _PAGE_SZHUGE_4U)) {
-			tsb_index = MM_TSB_HUGE;
-			tsb_hash_shift = HPAGE_SHIFT;
-		}
-	}
-#endif
-
-	tsb = mm->context.tsb_block[tsb_index].tsb;
-	tsb += ((address >> tsb_hash_shift) &
-		(mm->context.tsb_block[tsb_index].tsb_nentries - 1UL));
-	tag = (address >> 22UL);
-	tsb_insert(tsb, tag, pte_val(pte));
-
-	spin_unlock_irqrestore(&mm->context.lock, flags);
-}
-
-void flush_dcache_page(struct page *page)
-{
-	struct address_space *mapping;
-	int this_cpu;
-
-	if (tlb_type == hypervisor)
-		return;
-
-	/* Do not bother with the expensive D-cache flush if it
-	 * is merely the zero page.  The 'bigcore' testcase in GDB
-	 * causes this case to run millions of times.
-	 */
-	if (page == ZERO_PAGE(0))
-		return;
-
-	this_cpu = get_cpu();
-
-	mapping = page_mapping(page);
-	if (mapping && !mapping_mapped(mapping)) {
-		int dirty = test_bit(PG_dcache_dirty, &page->flags);
-		if (dirty) {
-			int dirty_cpu = dcache_dirty_cpu(page);
-
-			if (dirty_cpu == this_cpu)
-				goto out;
-			smp_flush_dcache_page_impl(page, dirty_cpu);
-		}
-		set_dcache_dirty(page, this_cpu);
-	} else {
-		/* We could delay the flush for the !page_mapping
-		 * case too.  But that case is for exec env/arg
-		 * pages and those are %99 certainly going to get
-		 * faulted into the tlb (and thus flushed) anyways.
-		 */
-		flush_dcache_page_impl(page);
-	}
-
-out:
-	put_cpu();
-}
-
-void __kprobes flush_icache_range(unsigned long start, unsigned long end)
-{
-	/* Cheetah and Hypervisor platform cpus have coherent I-cache. */
-	if (tlb_type == spitfire) {
-		unsigned long kaddr;
-
-		/* This code only runs on Spitfire cpus so this is
-		 * why we can assume _PAGE_PADDR_4U.
-		 */
-		for (kaddr = start; kaddr < end; kaddr += PAGE_SIZE) {
-			unsigned long paddr, mask = _PAGE_PADDR_4U;
-
-			if (kaddr >= PAGE_OFFSET)
-				paddr = kaddr & mask;
-			else {
-				pgd_t *pgdp = pgd_offset_k(kaddr);
-				pud_t *pudp = pud_offset(pgdp, kaddr);
-				pmd_t *pmdp = pmd_offset(pudp, kaddr);
-				pte_t *ptep = pte_offset_kernel(pmdp, kaddr);
-
-				paddr = pte_val(*ptep) & mask;
-			}
-			__flush_icache_page(paddr);
-		}
-	}
-}
-
-void mmu_info(struct seq_file *m)
-{
-	if (tlb_type == cheetah)
-		seq_printf(m, "MMU Type\t: Cheetah\n");
-	else if (tlb_type == cheetah_plus)
-		seq_printf(m, "MMU Type\t: Cheetah+\n");
-	else if (tlb_type == spitfire)
-		seq_printf(m, "MMU Type\t: Spitfire\n");
-	else if (tlb_type == hypervisor)
-		seq_printf(m, "MMU Type\t: Hypervisor (sun4v)\n");
-	else
-		seq_printf(m, "MMU Type\t: ???\n");
-
-#ifdef CONFIG_DEBUG_DCFLUSH
-	seq_printf(m, "DCPageFlushes\t: %d\n",
-		   atomic_read(&dcpage_flushes));
-#ifdef CONFIG_SMP
-	seq_printf(m, "DCPageFlushesXC\t: %d\n",
-		   atomic_read(&dcpage_flushes_xcall));
-#endif /* CONFIG_SMP */
-#endif /* CONFIG_DEBUG_DCFLUSH */
-}
-
-struct linux_prom_translation prom_trans[512] __read_mostly;
-unsigned int prom_trans_ents __read_mostly;
-
-unsigned long kern_locked_tte_data;
-
-/* The obp translations are saved based on 8k pagesize, since obp can
- * use a mixture of pagesizes. Misses to the LOW_OBP_ADDRESS ->
- * HI_OBP_ADDRESS range are handled in ktlb.S.
- */
-static inline int in_obp_range(unsigned long vaddr)
-{
-	return (vaddr >= LOW_OBP_ADDRESS &&
-		vaddr < HI_OBP_ADDRESS);
-}
-
-static int cmp_ptrans(const void *a, const void *b)
-{
-	const struct linux_prom_translation *x = a, *y = b;
-
-	if (x->virt > y->virt)
-		return 1;
-	if (x->virt < y->virt)
-		return -1;
-	return 0;
-}
-
-/* Read OBP translations property into 'prom_trans[]'.  */
-static void __init read_obp_translations(void)
-{
-	int n, node, ents, first, last, i;
-
-	node = prom_finddevice("/virtual-memory");
-	n = prom_getproplen(node, "translations");
-	if (unlikely(n == 0 || n == -1)) {
-		prom_printf("prom_mappings: Couldn't get size.\n");
-		prom_halt();
-	}
-	if (unlikely(n > sizeof(prom_trans))) {
-		prom_printf("prom_mappings: Size %Zd is too big.\n", n);
-		prom_halt();
-	}
-
-	if ((n = prom_getproperty(node, "translations",
-				  (char *)&prom_trans[0],
-				  sizeof(prom_trans))) == -1) {
-		prom_printf("prom_mappings: Couldn't get property.\n");
-		prom_halt();
-	}
-
-	n = n / sizeof(struct linux_prom_translation);
-
-	ents = n;
-
-	sort(prom_trans, ents, sizeof(struct linux_prom_translation),
-	     cmp_ptrans, NULL);
-
-	/* Now kick out all the non-OBP entries.  */
-	for (i = 0; i < ents; i++) {
-		if (in_obp_range(prom_trans[i].virt))
-			break;
-	}
-	first = i;
-	for (; i < ents; i++) {
-		if (!in_obp_range(prom_trans[i].virt))
-			break;
-	}
-	last = i;
-
-	for (i = 0; i < (last - first); i++) {
-		struct linux_prom_translation *src = &prom_trans[i + first];
-		struct linux_prom_translation *dest = &prom_trans[i];
-
-		*dest = *src;
-	}
-	for (; i < ents; i++) {
-		struct linux_prom_translation *dest = &prom_trans[i];
-		dest->virt = dest->size = dest->data = 0x0UL;
-	}
-
-	prom_trans_ents = last - first;
-
-	if (tlb_type == spitfire) {
-		/* Clear diag TTE bits. */
-		for (i = 0; i < prom_trans_ents; i++)
-			prom_trans[i].data &= ~0x0003fe0000000000UL;
-	}
-}
-
-static void __init hypervisor_tlb_lock(unsigned long vaddr,
-				       unsigned long pte,
-				       unsigned long mmu)
-{
-	unsigned long ret = sun4v_mmu_map_perm_addr(vaddr, 0, pte, mmu);
-
-	if (ret != 0) {
-		prom_printf("hypervisor_tlb_lock[%lx:%lx:%lx:%lx]: "
-			    "errors with %lx\n", vaddr, 0, pte, mmu, ret);
-		prom_halt();
-	}
-}
-
-static unsigned long kern_large_tte(unsigned long paddr);
-
-static void __init remap_kernel(void)
-{
-	unsigned long phys_page, tte_vaddr, tte_data;
-	int i, tlb_ent = sparc64_highest_locked_tlbent();
-
-	tte_vaddr = (unsigned long) KERNBASE;
-	phys_page = (prom_boot_mapping_phys_low >> 22UL) << 22UL;
-	tte_data = kern_large_tte(phys_page);
-
-	kern_locked_tte_data = tte_data;
-
-	/* Now lock us into the TLBs via Hypervisor or OBP. */
-	if (tlb_type == hypervisor) {
-		for (i = 0; i < num_kernel_image_mappings; i++) {
-			hypervisor_tlb_lock(tte_vaddr, tte_data, HV_MMU_DMMU);
-			hypervisor_tlb_lock(tte_vaddr, tte_data, HV_MMU_IMMU);
-			tte_vaddr += 0x400000;
-			tte_data += 0x400000;
-		}
-	} else {
-		for (i = 0; i < num_kernel_image_mappings; i++) {
-			prom_dtlb_load(tlb_ent - i, tte_data, tte_vaddr);
-			prom_itlb_load(tlb_ent - i, tte_data, tte_vaddr);
-			tte_vaddr += 0x400000;
-			tte_data += 0x400000;
-		}
-		sparc64_highest_unlocked_tlb_ent = tlb_ent - i;
-	}
-	if (tlb_type == cheetah_plus) {
-		sparc64_kern_pri_context = (CTX_CHEETAH_PLUS_CTX0 |
-					    CTX_CHEETAH_PLUS_NUC);
-		sparc64_kern_pri_nuc_bits = CTX_CHEETAH_PLUS_NUC;
-		sparc64_kern_sec_context = CTX_CHEETAH_PLUS_CTX0;
-	}
-}
-
-
-static void __init inherit_prom_mappings(void)
-{
-	/* Now fixup OBP's idea about where we really are mapped. */
-	printk("Remapping the kernel... ");
-	remap_kernel();
-	printk("done.\n");
-}
-
-void prom_world(int enter)
-{
-	if (!enter)
-		set_fs((mm_segment_t) { get_thread_current_ds() });
-
-	__asm__ __volatile__("flushw");
-}
-
-void __flush_dcache_range(unsigned long start, unsigned long end)
-{
-	unsigned long va;
-
-	if (tlb_type == spitfire) {
-		int n = 0;
-
-		for (va = start; va < end; va += 32) {
-			spitfire_put_dcache_tag(va & 0x3fe0, 0x0);
-			if (++n >= 512)
-				break;
-		}
-	} else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
-		start = __pa(start);
-		end = __pa(end);
-		for (va = start; va < end; va += 32)
-			__asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
-					     "membar #Sync"
-					     : /* no outputs */
-					     : "r" (va),
-					       "i" (ASI_DCACHE_INVALIDATE));
-	}
-}
-
-/* get_new_mmu_context() uses "cache + 1".  */
-DEFINE_SPINLOCK(ctx_alloc_lock);
-unsigned long tlb_context_cache = CTX_FIRST_VERSION - 1;
-#define MAX_CTX_NR	(1UL << CTX_NR_BITS)
-#define CTX_BMAP_SLOTS	BITS_TO_LONGS(MAX_CTX_NR)
-DECLARE_BITMAP(mmu_context_bmap, MAX_CTX_NR);
-
-/* Caller does TLB context flushing on local CPU if necessary.
- * The caller also ensures that CTX_VALID(mm->context) is false.
- *
- * We must be careful about boundary cases so that we never
- * let the user have CTX 0 (nucleus) or we ever use a CTX
- * version of zero (and thus NO_CONTEXT would not be caught
- * by version mis-match tests in mmu_context.h).
- *
- * Always invoked with interrupts disabled.
- */
-void get_new_mmu_context(struct mm_struct *mm)
-{
-	unsigned long ctx, new_ctx;
-	unsigned long orig_pgsz_bits;
-	unsigned long flags;
-	int new_version;
-
-	spin_lock_irqsave(&ctx_alloc_lock, flags);
-	orig_pgsz_bits = (mm->context.sparc64_ctx_val & CTX_PGSZ_MASK);
-	ctx = (tlb_context_cache + 1) & CTX_NR_MASK;
-	new_ctx = find_next_zero_bit(mmu_context_bmap, 1 << CTX_NR_BITS, ctx);
-	new_version = 0;
-	if (new_ctx >= (1 << CTX_NR_BITS)) {
-		new_ctx = find_next_zero_bit(mmu_context_bmap, ctx, 1);
-		if (new_ctx >= ctx) {
-			int i;
-			new_ctx = (tlb_context_cache & CTX_VERSION_MASK) +
-				CTX_FIRST_VERSION;
-			if (new_ctx == 1)
-				new_ctx = CTX_FIRST_VERSION;
-
-			/* Don't call memset, for 16 entries that's just
-			 * plain silly...
-			 */
-			mmu_context_bmap[0] = 3;
-			mmu_context_bmap[1] = 0;
-			mmu_context_bmap[2] = 0;
-			mmu_context_bmap[3] = 0;
-			for (i = 4; i < CTX_BMAP_SLOTS; i += 4) {
-				mmu_context_bmap[i + 0] = 0;
-				mmu_context_bmap[i + 1] = 0;
-				mmu_context_bmap[i + 2] = 0;
-				mmu_context_bmap[i + 3] = 0;
-			}
-			new_version = 1;
-			goto out;
-		}
-	}
-	mmu_context_bmap[new_ctx>>6] |= (1UL << (new_ctx & 63));
-	new_ctx |= (tlb_context_cache & CTX_VERSION_MASK);
-out:
-	tlb_context_cache = new_ctx;
-	mm->context.sparc64_ctx_val = new_ctx | orig_pgsz_bits;
-	spin_unlock_irqrestore(&ctx_alloc_lock, flags);
-
-	if (unlikely(new_version))
-		smp_new_mmu_context_version();
-}
-
-static int numa_enabled = 1;
-static int numa_debug;
-
-static int __init early_numa(char *p)
-{
-	if (!p)
-		return 0;
-
-	if (strstr(p, "off"))
-		numa_enabled = 0;
-
-	if (strstr(p, "debug"))
-		numa_debug = 1;
-
-	return 0;
-}
-early_param("numa", early_numa);
-
-#define numadbg(f, a...) \
-do {	if (numa_debug) \
-		printk(KERN_INFO f, ## a); \
-} while (0)
-
-static void __init find_ramdisk(unsigned long phys_base)
-{
-#ifdef CONFIG_BLK_DEV_INITRD
-	if (sparc_ramdisk_image || sparc_ramdisk_image64) {
-		unsigned long ramdisk_image;
-
-		/* Older versions of the bootloader only supported a
-		 * 32-bit physical address for the ramdisk image
-		 * location, stored at sparc_ramdisk_image.  Newer
-		 * SILO versions set sparc_ramdisk_image to zero and
-		 * provide a full 64-bit physical address at
-		 * sparc_ramdisk_image64.
-		 */
-		ramdisk_image = sparc_ramdisk_image;
-		if (!ramdisk_image)
-			ramdisk_image = sparc_ramdisk_image64;
-
-		/* Another bootloader quirk.  The bootloader normalizes
-		 * the physical address to KERNBASE, so we have to
-		 * factor that back out and add in the lowest valid
-		 * physical page address to get the true physical address.
-		 */
-		ramdisk_image -= KERNBASE;
-		ramdisk_image += phys_base;
-
-		numadbg("Found ramdisk at physical address 0x%lx, size %u\n",
-			ramdisk_image, sparc_ramdisk_size);
-
-		initrd_start = ramdisk_image;
-		initrd_end = ramdisk_image + sparc_ramdisk_size;
-
-		lmb_reserve(initrd_start, sparc_ramdisk_size);
-
-		initrd_start += PAGE_OFFSET;
-		initrd_end += PAGE_OFFSET;
-	}
-#endif
-}
-
-struct node_mem_mask {
-	unsigned long mask;
-	unsigned long val;
-	unsigned long bootmem_paddr;
-};
-static struct node_mem_mask node_masks[MAX_NUMNODES];
-static int num_node_masks;
-
-int numa_cpu_lookup_table[NR_CPUS];
-cpumask_t numa_cpumask_lookup_table[MAX_NUMNODES];
-
-#ifdef CONFIG_NEED_MULTIPLE_NODES
-
-struct mdesc_mblock {
-	u64	base;
-	u64	size;
-	u64	offset; /* RA-to-PA */
-};
-static struct mdesc_mblock *mblocks;
-static int num_mblocks;
-
-static unsigned long ra_to_pa(unsigned long addr)
-{
-	int i;
-
-	for (i = 0; i < num_mblocks; i++) {
-		struct mdesc_mblock *m = &mblocks[i];
-
-		if (addr >= m->base &&
-		    addr < (m->base + m->size)) {
-			addr += m->offset;
-			break;
-		}
-	}
-	return addr;
-}
-
-static int find_node(unsigned long addr)
-{
-	int i;
-
-	addr = ra_to_pa(addr);
-	for (i = 0; i < num_node_masks; i++) {
-		struct node_mem_mask *p = &node_masks[i];
-
-		if ((addr & p->mask) == p->val)
-			return i;
-	}
-	return -1;
-}
-
-static unsigned long nid_range(unsigned long start, unsigned long end,
-			       int *nid)
-{
-	*nid = find_node(start);
-	start += PAGE_SIZE;
-	while (start < end) {
-		int n = find_node(start);
-
-		if (n != *nid)
-			break;
-		start += PAGE_SIZE;
-	}
-
-	if (start > end)
-		start = end;
-
-	return start;
-}
-#else
-static unsigned long nid_range(unsigned long start, unsigned long end,
-			       int *nid)
-{
-	*nid = 0;
-	return end;
-}
-#endif
-
-/* This must be invoked after performing all of the necessary
- * add_active_range() calls for 'nid'.  We need to be able to get
- * correct data from get_pfn_range_for_nid().
- */
-static void __init allocate_node_data(int nid)
-{
-	unsigned long paddr, num_pages, start_pfn, end_pfn;
-	struct pglist_data *p;
-
-#ifdef CONFIG_NEED_MULTIPLE_NODES
-	paddr = lmb_alloc_nid(sizeof(struct pglist_data),
-			      SMP_CACHE_BYTES, nid, nid_range);
-	if (!paddr) {
-		prom_printf("Cannot allocate pglist_data for nid[%d]\n", nid);
-		prom_halt();
-	}
-	NODE_DATA(nid) = __va(paddr);
-	memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
-
-	NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
-#endif
-
-	p = NODE_DATA(nid);
-
-	get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);
-	p->node_start_pfn = start_pfn;
-	p->node_spanned_pages = end_pfn - start_pfn;
-
-	if (p->node_spanned_pages) {
-		num_pages = bootmem_bootmap_pages(p->node_spanned_pages);
-
-		paddr = lmb_alloc_nid(num_pages << PAGE_SHIFT, PAGE_SIZE, nid,
-				      nid_range);
-		if (!paddr) {
-			prom_printf("Cannot allocate bootmap for nid[%d]\n",
-				  nid);
-			prom_halt();
-		}
-		node_masks[nid].bootmem_paddr = paddr;
-	}
-}
-
-static void init_node_masks_nonnuma(void)
-{
-	int i;
-
-	numadbg("Initializing tables for non-numa.\n");
-
-	node_masks[0].mask = node_masks[0].val = 0;
-	num_node_masks = 1;
-
-	for (i = 0; i < NR_CPUS; i++)
-		numa_cpu_lookup_table[i] = 0;
-
-	numa_cpumask_lookup_table[0] = CPU_MASK_ALL;
-}
-
-#ifdef CONFIG_NEED_MULTIPLE_NODES
-struct pglist_data *node_data[MAX_NUMNODES];
-
-EXPORT_SYMBOL(numa_cpu_lookup_table);
-EXPORT_SYMBOL(numa_cpumask_lookup_table);
-EXPORT_SYMBOL(node_data);
-
-struct mdesc_mlgroup {
-	u64	node;
-	u64	latency;
-	u64	match;
-	u64	mask;
-};
-static struct mdesc_mlgroup *mlgroups;
-static int num_mlgroups;
-
-static int scan_pio_for_cfg_handle(struct mdesc_handle *md, u64 pio,
-				   u32 cfg_handle)
-{
-	u64 arc;
-
-	mdesc_for_each_arc(arc, md, pio, MDESC_ARC_TYPE_FWD) {
-		u64 target = mdesc_arc_target(md, arc);
-		const u64 *val;
-
-		val = mdesc_get_property(md, target,
-					 "cfg-handle", NULL);
-		if (val && *val == cfg_handle)
-			return 0;
-	}
-	return -ENODEV;
-}
-
-static int scan_arcs_for_cfg_handle(struct mdesc_handle *md, u64 grp,
-				    u32 cfg_handle)
-{
-	u64 arc, candidate, best_latency = ~(u64)0;
-
-	candidate = MDESC_NODE_NULL;
-	mdesc_for_each_arc(arc, md, grp, MDESC_ARC_TYPE_FWD) {
-		u64 target = mdesc_arc_target(md, arc);
-		const char *name = mdesc_node_name(md, target);
-		const u64 *val;
-
-		if (strcmp(name, "pio-latency-group"))
-			continue;
-
-		val = mdesc_get_property(md, target, "latency", NULL);
-		if (!val)
-			continue;
-
-		if (*val < best_latency) {
-			candidate = target;
-			best_latency = *val;
-		}
-	}
-
-	if (candidate == MDESC_NODE_NULL)
-		return -ENODEV;
-
-	return scan_pio_for_cfg_handle(md, candidate, cfg_handle);
-}
-
-int of_node_to_nid(struct device_node *dp)
-{
-	const struct linux_prom64_registers *regs;
-	struct mdesc_handle *md;
-	u32 cfg_handle;
-	int count, nid;
-	u64 grp;
-
-	/* This is the right thing to do on currently supported
-	 * SUN4U NUMA platforms as well, as the PCI controller does
-	 * not sit behind any particular memory controller.
-	 */
-	if (!mlgroups)
-		return -1;
-
-	regs = of_get_property(dp, "reg", NULL);
-	if (!regs)
-		return -1;
-
-	cfg_handle = (regs->phys_addr >> 32UL) & 0x0fffffff;
-
-	md = mdesc_grab();
-
-	count = 0;
-	nid = -1;
-	mdesc_for_each_node_by_name(md, grp, "group") {
-		if (!scan_arcs_for_cfg_handle(md, grp, cfg_handle)) {
-			nid = count;
-			break;
-		}
-		count++;
-	}
-
-	mdesc_release(md);
-
-	return nid;
-}
-
-static void __init add_node_ranges(void)
-{
-	int i;
-
-	for (i = 0; i < lmb.memory.cnt; i++) {
-		unsigned long size = lmb_size_bytes(&lmb.memory, i);
-		unsigned long start, end;
-
-		start = lmb.memory.region[i].base;
-		end = start + size;
-		while (start < end) {
-			unsigned long this_end;
-			int nid;
-
-			this_end = nid_range(start, end, &nid);
-
-			numadbg("Adding active range nid[%d] "
-				"start[%lx] end[%lx]\n",
-				nid, start, this_end);
-
-			add_active_range(nid,
-					 start >> PAGE_SHIFT,
-					 this_end >> PAGE_SHIFT);
-
-			start = this_end;
-		}
-	}
-}
-
-static int __init grab_mlgroups(struct mdesc_handle *md)
-{
-	unsigned long paddr;
-	int count = 0;
-	u64 node;
-
-	mdesc_for_each_node_by_name(md, node, "memory-latency-group")
-		count++;
-	if (!count)
-		return -ENOENT;
-
-	paddr = lmb_alloc(count * sizeof(struct mdesc_mlgroup),
-			  SMP_CACHE_BYTES);
-	if (!paddr)
-		return -ENOMEM;
-
-	mlgroups = __va(paddr);
-	num_mlgroups = count;
-
-	count = 0;
-	mdesc_for_each_node_by_name(md, node, "memory-latency-group") {
-		struct mdesc_mlgroup *m = &mlgroups[count++];
-		const u64 *val;
-
-		m->node = node;
-
-		val = mdesc_get_property(md, node, "latency", NULL);
-		m->latency = *val;
-		val = mdesc_get_property(md, node, "address-match", NULL);
-		m->match = *val;
-		val = mdesc_get_property(md, node, "address-mask", NULL);
-		m->mask = *val;
-
-		numadbg("MLGROUP[%d]: node[%lx] latency[%lx] "
-			"match[%lx] mask[%lx]\n",
-			count - 1, m->node, m->latency, m->match, m->mask);
-	}
-
-	return 0;
-}
-
-static int __init grab_mblocks(struct mdesc_handle *md)
-{
-	unsigned long paddr;
-	int count = 0;
-	u64 node;
-
-	mdesc_for_each_node_by_name(md, node, "mblock")
-		count++;
-	if (!count)
-		return -ENOENT;
-
-	paddr = lmb_alloc(count * sizeof(struct mdesc_mblock),
-			  SMP_CACHE_BYTES);
-	if (!paddr)
-		return -ENOMEM;
-
-	mblocks = __va(paddr);
-	num_mblocks = count;
-
-	count = 0;
-	mdesc_for_each_node_by_name(md, node, "mblock") {
-		struct mdesc_mblock *m = &mblocks[count++];
-		const u64 *val;
-
-		val = mdesc_get_property(md, node, "base", NULL);
-		m->base = *val;
-		val = mdesc_get_property(md, node, "size", NULL);
-		m->size = *val;
-		val = mdesc_get_property(md, node,
-					 "address-congruence-offset", NULL);
-		m->offset = *val;
-
-		numadbg("MBLOCK[%d]: base[%lx] size[%lx] offset[%lx]\n",
-			count - 1, m->base, m->size, m->offset);
-	}
-
-	return 0;
-}
-
-static void __init numa_parse_mdesc_group_cpus(struct mdesc_handle *md,
-					       u64 grp, cpumask_t *mask)
-{
-	u64 arc;
-
-	cpus_clear(*mask);
-
-	mdesc_for_each_arc(arc, md, grp, MDESC_ARC_TYPE_BACK) {
-		u64 target = mdesc_arc_target(md, arc);
-		const char *name = mdesc_node_name(md, target);
-		const u64 *id;
-
-		if (strcmp(name, "cpu"))
-			continue;
-		id = mdesc_get_property(md, target, "id", NULL);
-		if (*id < NR_CPUS)
-			cpu_set(*id, *mask);
-	}
-}
-
-static struct mdesc_mlgroup * __init find_mlgroup(u64 node)
-{
-	int i;
-
-	for (i = 0; i < num_mlgroups; i++) {
-		struct mdesc_mlgroup *m = &mlgroups[i];
-		if (m->node == node)
-			return m;
-	}
-	return NULL;
-}
-
-static int __init numa_attach_mlgroup(struct mdesc_handle *md, u64 grp,
-				      int index)
-{
-	struct mdesc_mlgroup *candidate = NULL;
-	u64 arc, best_latency = ~(u64)0;
-	struct node_mem_mask *n;
-
-	mdesc_for_each_arc(arc, md, grp, MDESC_ARC_TYPE_FWD) {
-		u64 target = mdesc_arc_target(md, arc);
-		struct mdesc_mlgroup *m = find_mlgroup(target);
-		if (!m)
-			continue;
-		if (m->latency < best_latency) {
-			candidate = m;
-			best_latency = m->latency;
-		}
-	}
-	if (!candidate)
-		return -ENOENT;
-
-	if (num_node_masks != index) {
-		printk(KERN_ERR "Inconsistent NUMA state, "
-		       "index[%d] != num_node_masks[%d]\n",
-		       index, num_node_masks);
-		return -EINVAL;
-	}
-
-	n = &node_masks[num_node_masks++];
-
-	n->mask = candidate->mask;
-	n->val = candidate->match;
-
-	numadbg("NUMA NODE[%d]: mask[%lx] val[%lx] (latency[%lx])\n",
-		index, n->mask, n->val, candidate->latency);
-
-	return 0;
-}
-
-static int __init numa_parse_mdesc_group(struct mdesc_handle *md, u64 grp,
-					 int index)
-{
-	cpumask_t mask;
-	int cpu;
-
-	numa_parse_mdesc_group_cpus(md, grp, &mask);
-
-	for_each_cpu_mask(cpu, mask)
-		numa_cpu_lookup_table[cpu] = index;
-	numa_cpumask_lookup_table[index] = mask;
-
-	if (numa_debug) {
-		printk(KERN_INFO "NUMA GROUP[%d]: cpus [ ", index);
-		for_each_cpu_mask(cpu, mask)
-			printk("%d ", cpu);
-		printk("]\n");
-	}
-
-	return numa_attach_mlgroup(md, grp, index);
-}
-
-static int __init numa_parse_mdesc(void)
-{
-	struct mdesc_handle *md = mdesc_grab();
-	int i, err, count;
-	u64 node;
-
-	node = mdesc_node_by_name(md, MDESC_NODE_NULL, "latency-groups");
-	if (node == MDESC_NODE_NULL) {
-		mdesc_release(md);
-		return -ENOENT;
-	}
-
-	err = grab_mblocks(md);
-	if (err < 0)
-		goto out;
-
-	err = grab_mlgroups(md);
-	if (err < 0)
-		goto out;
-
-	count = 0;
-	mdesc_for_each_node_by_name(md, node, "group") {
-		err = numa_parse_mdesc_group(md, node, count);
-		if (err < 0)
-			break;
-		count++;
-	}
-
-	add_node_ranges();
-
-	for (i = 0; i < num_node_masks; i++) {
-		allocate_node_data(i);
-		node_set_online(i);
-	}
-
-	err = 0;
-out:
-	mdesc_release(md);
-	return err;
-}
-
-static int __init numa_parse_jbus(void)
-{
-	unsigned long cpu, index;
-
-	/* NUMA node id is encoded in bits 36 and higher, and there is
-	 * a 1-to-1 mapping from CPU ID to NUMA node ID.
-	 */
-	index = 0;
-	for_each_present_cpu(cpu) {
-		numa_cpu_lookup_table[cpu] = index;
-		numa_cpumask_lookup_table[index] = cpumask_of_cpu(cpu);
-		node_masks[index].mask = ~((1UL << 36UL) - 1UL);
-		node_masks[index].val = cpu << 36UL;
-
-		index++;
-	}
-	num_node_masks = index;
-
-	add_node_ranges