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Diffstat (limited to 'arch/powerpc/mm/pgtable_64.c')
-rw-r--r--arch/powerpc/mm/pgtable_64.c171
1 files changed, 0 insertions, 171 deletions
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index 9bf659d5078c..53e9eeecd5d4 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -33,7 +33,6 @@
#include <linux/swap.h>
#include <linux/stddef.h>
#include <linux/vmalloc.h>
-#include <linux/memblock.h>
#include <linux/slab.h>
#include <linux/hugetlb.h>
@@ -47,13 +46,11 @@
#include <asm/smp.h>
#include <asm/machdep.h>
#include <asm/tlb.h>
-#include <asm/trace.h>
#include <asm/processor.h>
#include <asm/cputable.h>
#include <asm/sections.h>
#include <asm/firmware.h>
#include <asm/dma.h>
-#include <asm/powernv.h>
#include "mmu_decl.h"
@@ -75,8 +72,6 @@ unsigned long __pud_index_size;
EXPORT_SYMBOL(__pud_index_size);
unsigned long __pgd_index_size;
EXPORT_SYMBOL(__pgd_index_size);
-unsigned long __pmd_cache_index;
-EXPORT_SYMBOL(__pmd_cache_index);
unsigned long __pud_cache_index;
EXPORT_SYMBOL(__pud_cache_index);
unsigned long __pte_table_size;
@@ -316,172 +311,6 @@ struct page *pmd_page(pmd_t pmd)
return virt_to_page(pmd_page_vaddr(pmd));
}
-#ifdef CONFIG_PPC_64K_PAGES
-static pte_t *get_from_cache(struct mm_struct *mm)
-{
- void *pte_frag, *ret;
-
- spin_lock(&mm->page_table_lock);
- ret = mm->context.pte_frag;
- if (ret) {
- pte_frag = ret + PTE_FRAG_SIZE;
- /*
- * If we have taken up all the fragments mark PTE page NULL
- */
- if (((unsigned long)pte_frag & ~PAGE_MASK) == 0)
- pte_frag = NULL;
- mm->context.pte_frag = pte_frag;
- }
- spin_unlock(&mm->page_table_lock);
- return (pte_t *)ret;
-}
-
-static pte_t *__alloc_for_cache(struct mm_struct *mm, int kernel)
-{
- void *ret = NULL;
- struct page *page;
-
- if (!kernel) {
- page = alloc_page(PGALLOC_GFP | __GFP_ACCOUNT);
- if (!page)
- return NULL;
- if (!pgtable_page_ctor(page)) {
- __free_page(page);
- return NULL;
- }
- } else {
- page = alloc_page(PGALLOC_GFP);
- if (!page)
- return NULL;
- }
-
- ret = page_address(page);
- spin_lock(&mm->page_table_lock);
- /*
- * If we find pgtable_page set, we return
- * the allocated page with single fragement
- * count.
- */
- if (likely(!mm->context.pte_frag)) {
- set_page_count(page, PTE_FRAG_NR);
- mm->context.pte_frag = ret + PTE_FRAG_SIZE;
- }
- spin_unlock(&mm->page_table_lock);
-
- return (pte_t *)ret;
-}
-
-pte_t *pte_fragment_alloc(struct mm_struct *mm, unsigned long vmaddr, int kernel)
-{
- pte_t *pte;
-
- pte = get_from_cache(mm);
- if (pte)
- return pte;
-
- return __alloc_for_cache(mm, kernel);
-}
-#endif /* CONFIG_PPC_64K_PAGES */
-
-void pte_fragment_free(unsigned long *table, int kernel)
-{
- struct page *page = virt_to_page(table);
- if (put_page_testzero(page)) {
- if (!kernel)
- pgtable_page_dtor(page);
- free_unref_page(page);
- }
-}
-
-#ifdef CONFIG_SMP
-void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift)
-{
- unsigned long pgf = (unsigned long)table;
-
- BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
- pgf |= shift;
- tlb_remove_table(tlb, (void *)pgf);
-}
-
-void __tlb_remove_table(void *_table)
-{
- void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
- unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
-
- if (!shift)
- /* PTE page needs special handling */
- pte_fragment_free(table, 0);
- else {
- BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
- kmem_cache_free(PGT_CACHE(shift), table);
- }
-}
-#else
-void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift)
-{
- if (!shift) {
- /* PTE page needs special handling */
- pte_fragment_free(table, 0);
- } else {
- BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
- kmem_cache_free(PGT_CACHE(shift), table);
- }
-}
-#endif
-
-#ifdef CONFIG_PPC_BOOK3S_64
-void __init mmu_partition_table_init(void)
-{
- unsigned long patb_size = 1UL << PATB_SIZE_SHIFT;
- unsigned long ptcr;
-
- BUILD_BUG_ON_MSG((PATB_SIZE_SHIFT > 36), "Partition table size too large.");
- partition_tb = __va(memblock_alloc_base(patb_size, patb_size,
- MEMBLOCK_ALLOC_ANYWHERE));
-
- /* Initialize the Partition Table with no entries */
- memset((void *)partition_tb, 0, patb_size);
-
- /*
- * update partition table control register,
- * 64 K size.
- */
- ptcr = __pa(partition_tb) | (PATB_SIZE_SHIFT - 12);
- mtspr(SPRN_PTCR, ptcr);
- powernv_set_nmmu_ptcr(ptcr);
-}
-
-void mmu_partition_table_set_entry(unsigned int lpid, unsigned long dw0,
- unsigned long dw1)
-{
- unsigned long old = be64_to_cpu(partition_tb[lpid].patb0);
-
- partition_tb[lpid].patb0 = cpu_to_be64(dw0);
- partition_tb[lpid].patb1 = cpu_to_be64(dw1);
-
- /*
- * Global flush of TLBs and partition table caches for this lpid.
- * The type of flush (hash or radix) depends on what the previous
- * use of this partition ID was, not the new use.
- */
- asm volatile("ptesync" : : : "memory");
- if (old & PATB_HR) {
- asm volatile(PPC_TLBIE_5(%0,%1,2,0,1) : :
- "r" (TLBIEL_INVAL_SET_LPID), "r" (lpid));
- asm volatile(PPC_TLBIE_5(%0,%1,2,1,1) : :
- "r" (TLBIEL_INVAL_SET_LPID), "r" (lpid));
- trace_tlbie(lpid, 0, TLBIEL_INVAL_SET_LPID, lpid, 2, 0, 1);
- } else {
- asm volatile(PPC_TLBIE_5(%0,%1,2,0,0) : :
- "r" (TLBIEL_INVAL_SET_LPID), "r" (lpid));
- trace_tlbie(lpid, 0, TLBIEL_INVAL_SET_LPID, lpid, 2, 0, 0);
- }
- /* do we need fixup here ?*/
- asm volatile("eieio; tlbsync; ptesync" : : : "memory");
-}
-EXPORT_SYMBOL_GPL(mmu_partition_table_set_entry);
-#endif /* CONFIG_PPC_BOOK3S_64 */
-
#ifdef CONFIG_STRICT_KERNEL_RWX
void mark_rodata_ro(void)
{