metag: Remove arch/metag/

[sfrench/cifs-2.6.git] / arch / metag / include / asm / mmu_context.h

diff --git a/arch/metag/include/asm/mmu_context.h b/arch/metag/include/asm/mmu_context.h
deleted file mode 100644 (file)
index 7b47663..0000000
--- a/arch/metag/include/asm/mmu_context.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __METAG_MMU_CONTEXT_H
-#define __METAG_MMU_CONTEXT_H
-
-#include <asm-generic/mm_hooks.h>
-
-#include <asm/page.h>
-#include <asm/mmu.h>
-#include <asm/tlbflush.h>
-#include <asm/cacheflush.h>
-
-#include <linux/io.h>
-#include <linux/mm_types.h>
-
-static inline void enter_lazy_tlb(struct mm_struct *mm,
-                                 struct task_struct *tsk)
-{
-}
-
-static inline int init_new_context(struct task_struct *tsk,
-                                  struct mm_struct *mm)
-{
-#ifndef CONFIG_METAG_META21_MMU
-       /* We use context to store a pointer to the page holding the
-        * pgd of a process while it is running. While a process is not
-        * running the pgd and context fields should be equal.
-        */
-       mm->context.pgd_base = (unsigned long) mm->pgd;
-#endif
-#ifdef CONFIG_METAG_USER_TCM
-       INIT_LIST_HEAD(&mm->context.tcm);
-#endif
-       return 0;
-}
-
-#ifdef CONFIG_METAG_USER_TCM
-
-#include <linux/slab.h>
-#include <asm/tcm.h>
-
-static inline void destroy_context(struct mm_struct *mm)
-{
-       struct tcm_allocation *pos, *n;
-
-       list_for_each_entry_safe(pos, n,  &mm->context.tcm, list) {
-               tcm_free(pos->tag, pos->addr, pos->size);
-               list_del(&pos->list);
-               kfree(pos);
-       }
-}
-#else
-#define destroy_context(mm)            do { } while (0)
-#endif
-
-#ifdef CONFIG_METAG_META21_MMU
-static inline void load_pgd(pgd_t *pgd, int thread)
-{
-       unsigned long phys0 = mmu_phys0_addr(thread);
-       unsigned long phys1 = mmu_phys1_addr(thread);
-
-       /*
-        *  0x900 2Gb address space
-        *  The permission bits apply to MMU table region which gives a 2MB
-        *  window into physical memory. We especially don't want userland to be
-        *  able to access this.
-        */
-       metag_out32(0x900 | _PAGE_CACHEABLE | _PAGE_PRIV | _PAGE_WRITE |
-                   _PAGE_PRESENT, phys0);
-       /* Set new MMU base address */
-       metag_out32(__pa(pgd) & MMCU_TBLPHYS1_ADDR_BITS, phys1);
-}
-#endif
-
-static inline void switch_mmu(struct mm_struct *prev, struct mm_struct *next)
-{
-#ifdef CONFIG_METAG_META21_MMU
-       load_pgd(next->pgd, hard_processor_id());
-#else
-       unsigned int i;
-
-       /* prev->context == prev->pgd in the case where we are initially
-          switching from the init task to the first process. */
-       if (prev->context.pgd_base != (unsigned long) prev->pgd) {
-               for (i = FIRST_USER_PGD_NR; i < USER_PTRS_PER_PGD; i++)
-                       ((pgd_t *) prev->context.pgd_base)[i] = prev->pgd[i];
-       } else
-               prev->pgd = (pgd_t *)mmu_get_base();
-
-       next->pgd = prev->pgd;
-       prev->pgd = (pgd_t *) prev->context.pgd_base;
-
-       for (i = FIRST_USER_PGD_NR; i < USER_PTRS_PER_PGD; i++)
-               next->pgd[i] = ((pgd_t *) next->context.pgd_base)[i];
-
-       flush_cache_all();
-#endif
-       flush_tlb_all();
-}
-
-static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
-                            struct task_struct *tsk)
-{
-       if (prev != next)
-               switch_mmu(prev, next);
-}
-
-static inline void activate_mm(struct mm_struct *prev_mm,
-                              struct mm_struct *next_mm)
-{
-       switch_mmu(prev_mm, next_mm);
-}
-
-#define deactivate_mm(tsk, mm)   do { } while (0)
-
-#endif