obj-$(CONFIG_PPC_BOOK3E) += tlb_low_$(CONFIG_WORD_SIZE)e.o
hash64-$(CONFIG_PPC_NATIVE) := hash_native_64.o
obj-$(CONFIG_PPC_BOOK3E_64) += pgtable-book3e.o
-obj-$(CONFIG_PPC_STD_MMU_64) += pgtable-hash64.o hash_utils_64.o slb_low.o slb.o $(hash64-y)
+obj-$(CONFIG_PPC_STD_MMU_64) += pgtable-hash64.o hash_utils_64.o slb_low.o slb.o $(hash64-y) mmu_context_book3s64.o
obj-$(CONFIG_PPC_RADIX_MMU) += pgtable-radix.o
-obj-$(CONFIG_PPC_STD_MMU_32) += ppc_mmu_32.o hash_low_32.o
-obj-$(CONFIG_PPC_STD_MMU) += tlb_hash$(CONFIG_WORD_SIZE).o \
- mmu_context_hash$(CONFIG_WORD_SIZE).o
+obj-$(CONFIG_PPC_STD_MMU_32) += ppc_mmu_32.o hash_low_32.o mmu_context_hash32.o
+obj-$(CONFIG_PPC_STD_MMU) += tlb_hash$(CONFIG_WORD_SIZE).o
ifeq ($(CONFIG_PPC_STD_MMU_64),y)
obj-$(CONFIG_PPC_4K_PAGES) += hash64_4k.o
obj-$(CONFIG_PPC_64K_PAGES) += hash64_64k.o
--- /dev/null
+/*
+ * MMU context allocation for 64-bit kernels.
+ *
+ * Copyright (C) 2004 Anton Blanchard, IBM Corp. <anton@samba.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ */
+
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/spinlock.h>
+#include <linux/idr.h>
+#include <linux/export.h>
+#include <linux/gfp.h>
+#include <linux/slab.h>
+
+#include <asm/mmu_context.h>
+#include <asm/pgalloc.h>
+
+#include "icswx.h"
+
+static DEFINE_SPINLOCK(mmu_context_lock);
+static DEFINE_IDA(mmu_context_ida);
+
+int __init_new_context(void)
+{
+ int index;
+ int err;
+
+again:
+ if (!ida_pre_get(&mmu_context_ida, GFP_KERNEL))
+ return -ENOMEM;
+
+ spin_lock(&mmu_context_lock);
+ err = ida_get_new_above(&mmu_context_ida, 1, &index);
+ spin_unlock(&mmu_context_lock);
+
+ if (err == -EAGAIN)
+ goto again;
+ else if (err)
+ return err;
+
+ if (index > MAX_USER_CONTEXT) {
+ spin_lock(&mmu_context_lock);
+ ida_remove(&mmu_context_ida, index);
+ spin_unlock(&mmu_context_lock);
+ return -ENOMEM;
+ }
+
+ return index;
+}
+EXPORT_SYMBOL_GPL(__init_new_context);
+static int radix__init_new_context(struct mm_struct *mm, int index)
+{
+ unsigned long rts_field;
+
+ /*
+ * set the process table entry,
+ */
+ rts_field = 3ull << PPC_BITLSHIFT(2);
+ process_tb[index].prtb0 = cpu_to_be64(rts_field | __pa(mm->pgd) | RADIX_PGD_INDEX_SIZE);
+ return 0;
+}
+
+int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+{
+ int index;
+
+ index = __init_new_context();
+ if (index < 0)
+ return index;
+
+ if (radix_enabled()) {
+ radix__init_new_context(mm, index);
+ } else {
+
+ /* The old code would re-promote on fork, we don't do that
+ * when using slices as it could cause problem promoting slices
+ * that have been forced down to 4K
+ */
+ if (slice_mm_new_context(mm))
+ slice_set_user_psize(mm, mmu_virtual_psize);
+ subpage_prot_init_new_context(mm);
+ }
+ mm->context.id = index;
+#ifdef CONFIG_PPC_ICSWX
+ mm->context.cop_lockp = kmalloc(sizeof(spinlock_t), GFP_KERNEL);
+ if (!mm->context.cop_lockp) {
+ __destroy_context(index);
+ subpage_prot_free(mm);
+ mm->context.id = MMU_NO_CONTEXT;
+ return -ENOMEM;
+ }
+ spin_lock_init(mm->context.cop_lockp);
+#endif /* CONFIG_PPC_ICSWX */
+
+#ifdef CONFIG_PPC_64K_PAGES
+ mm->context.pte_frag = NULL;
+#endif
+#ifdef CONFIG_SPAPR_TCE_IOMMU
+ mm_iommu_init(&mm->context);
+#endif
+ return 0;
+}
+
+void __destroy_context(int context_id)
+{
+ spin_lock(&mmu_context_lock);
+ ida_remove(&mmu_context_ida, context_id);
+ spin_unlock(&mmu_context_lock);
+}
+EXPORT_SYMBOL_GPL(__destroy_context);
+
+#ifdef CONFIG_PPC_64K_PAGES
+static void destroy_pagetable_page(struct mm_struct *mm)
+{
+ int count;
+ void *pte_frag;
+ struct page *page;
+
+ pte_frag = mm->context.pte_frag;
+ if (!pte_frag)
+ return;
+
+ page = virt_to_page(pte_frag);
+ /* drop all the pending references */
+ count = ((unsigned long)pte_frag & ~PAGE_MASK) >> PTE_FRAG_SIZE_SHIFT;
+ /* We allow PTE_FRAG_NR fragments from a PTE page */
+ if (page_ref_sub_and_test(page, PTE_FRAG_NR - count)) {
+ pgtable_page_dtor(page);
+ free_hot_cold_page(page, 0);
+ }
+}
+
+#else
+static inline void destroy_pagetable_page(struct mm_struct *mm)
+{
+ return;
+}
+#endif
+
+
+void destroy_context(struct mm_struct *mm)
+{
+#ifdef CONFIG_SPAPR_TCE_IOMMU
+ mm_iommu_cleanup(&mm->context);
+#endif
+
+#ifdef CONFIG_PPC_ICSWX
+ drop_cop(mm->context.acop, mm);
+ kfree(mm->context.cop_lockp);
+ mm->context.cop_lockp = NULL;
+#endif /* CONFIG_PPC_ICSWX */
+
+ if (radix_enabled())
+ process_tb[mm->context.id].prtb1 = 0;
+ else
+ subpage_prot_free(mm);
+ destroy_pagetable_page(mm);
+ __destroy_context(mm->context.id);
+ mm->context.id = MMU_NO_CONTEXT;
+}
+
+#ifdef CONFIG_PPC_RADIX_MMU
+void radix__switch_mmu_context(struct mm_struct *prev, struct mm_struct *next)
+{
+ mtspr(SPRN_PID, next->context.id);
+ asm volatile("isync": : :"memory");
+}
+#endif
+++ /dev/null
-/*
- * MMU context allocation for 64-bit kernels.
- *
- * Copyright (C) 2004 Anton Blanchard, IBM Corp. <anton@samba.org>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/spinlock.h>
-#include <linux/idr.h>
-#include <linux/export.h>
-#include <linux/gfp.h>
-#include <linux/slab.h>
-
-#include <asm/mmu_context.h>
-#include <asm/pgalloc.h>
-
-#include "icswx.h"
-
-static DEFINE_SPINLOCK(mmu_context_lock);
-static DEFINE_IDA(mmu_context_ida);
-
-int __init_new_context(void)
-{
- int index;
- int err;
-
-again:
- if (!ida_pre_get(&mmu_context_ida, GFP_KERNEL))
- return -ENOMEM;
-
- spin_lock(&mmu_context_lock);
- err = ida_get_new_above(&mmu_context_ida, 1, &index);
- spin_unlock(&mmu_context_lock);
-
- if (err == -EAGAIN)
- goto again;
- else if (err)
- return err;
-
- if (index > MAX_USER_CONTEXT) {
- spin_lock(&mmu_context_lock);
- ida_remove(&mmu_context_ida, index);
- spin_unlock(&mmu_context_lock);
- return -ENOMEM;
- }
-
- return index;
-}
-EXPORT_SYMBOL_GPL(__init_new_context);
-static int radix__init_new_context(struct mm_struct *mm, int index)
-{
- unsigned long rts_field;
-
- /*
- * set the process table entry,
- */
- rts_field = 3ull << PPC_BITLSHIFT(2);
- process_tb[index].prtb0 = cpu_to_be64(rts_field | __pa(mm->pgd) | RADIX_PGD_INDEX_SIZE);
- return 0;
-}
-
-int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
-{
- int index;
-
- index = __init_new_context();
- if (index < 0)
- return index;
-
- if (radix_enabled()) {
- radix__init_new_context(mm, index);
- } else {
-
- /* The old code would re-promote on fork, we don't do that
- * when using slices as it could cause problem promoting slices
- * that have been forced down to 4K
- */
- if (slice_mm_new_context(mm))
- slice_set_user_psize(mm, mmu_virtual_psize);
- subpage_prot_init_new_context(mm);
- }
- mm->context.id = index;
-#ifdef CONFIG_PPC_ICSWX
- mm->context.cop_lockp = kmalloc(sizeof(spinlock_t), GFP_KERNEL);
- if (!mm->context.cop_lockp) {
- __destroy_context(index);
- subpage_prot_free(mm);
- mm->context.id = MMU_NO_CONTEXT;
- return -ENOMEM;
- }
- spin_lock_init(mm->context.cop_lockp);
-#endif /* CONFIG_PPC_ICSWX */
-
-#ifdef CONFIG_PPC_64K_PAGES
- mm->context.pte_frag = NULL;
-#endif
-#ifdef CONFIG_SPAPR_TCE_IOMMU
- mm_iommu_init(&mm->context);
-#endif
- return 0;
-}
-
-void __destroy_context(int context_id)
-{
- spin_lock(&mmu_context_lock);
- ida_remove(&mmu_context_ida, context_id);
- spin_unlock(&mmu_context_lock);
-}
-EXPORT_SYMBOL_GPL(__destroy_context);
-
-#ifdef CONFIG_PPC_64K_PAGES
-static void destroy_pagetable_page(struct mm_struct *mm)
-{
- int count;
- void *pte_frag;
- struct page *page;
-
- pte_frag = mm->context.pte_frag;
- if (!pte_frag)
- return;
-
- page = virt_to_page(pte_frag);
- /* drop all the pending references */
- count = ((unsigned long)pte_frag & ~PAGE_MASK) >> PTE_FRAG_SIZE_SHIFT;
- /* We allow PTE_FRAG_NR fragments from a PTE page */
- if (page_ref_sub_and_test(page, PTE_FRAG_NR - count)) {
- pgtable_page_dtor(page);
- free_hot_cold_page(page, 0);
- }
-}
-
-#else
-static inline void destroy_pagetable_page(struct mm_struct *mm)
-{
- return;
-}
-#endif
-
-
-void destroy_context(struct mm_struct *mm)
-{
-#ifdef CONFIG_SPAPR_TCE_IOMMU
- mm_iommu_cleanup(&mm->context);
-#endif
-
-#ifdef CONFIG_PPC_ICSWX
- drop_cop(mm->context.acop, mm);
- kfree(mm->context.cop_lockp);
- mm->context.cop_lockp = NULL;
-#endif /* CONFIG_PPC_ICSWX */
-
- if (radix_enabled())
- process_tb[mm->context.id].prtb1 = 0;
- else
- subpage_prot_free(mm);
- destroy_pagetable_page(mm);
- __destroy_context(mm->context.id);
- mm->context.id = MMU_NO_CONTEXT;
-}
-
-#ifdef CONFIG_PPC_RADIX_MMU
-void radix__switch_mmu_context(struct mm_struct *prev, struct mm_struct *next)
-{
- mtspr(SPRN_PID, next->context.id);
- asm volatile("isync": : :"memory");
-}
-#endif
projects / deliverable / linux.git / commitdiff
