cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

motorola_pgalloc.h (2146B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _MOTOROLA_PGALLOC_H
      3#define _MOTOROLA_PGALLOC_H
      4
      5#include <asm/tlb.h>
      6#include <asm/tlbflush.h>
      7
      8extern void mmu_page_ctor(void *page);
      9extern void mmu_page_dtor(void *page);
     10
     11enum m68k_table_types {
     12	TABLE_PGD = 0,
     13	TABLE_PMD = 0, /* same size as PGD */
     14	TABLE_PTE = 1,
     15};
     16
     17extern void init_pointer_table(void *table, int type);
     18extern void *get_pointer_table(int type);
     19extern int free_pointer_table(void *table, int type);
     20
     21/*
     22 * Allocate and free page tables. The xxx_kernel() versions are
     23 * used to allocate a kernel page table - this turns on ASN bits
     24 * if any.
     25 */
     26
     27static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
     28{
     29	return get_pointer_table(TABLE_PTE);
     30}
     31
     32static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
     33{
     34	free_pointer_table(pte, TABLE_PTE);
     35}
     36
     37static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
     38{
     39	return get_pointer_table(TABLE_PTE);
     40}
     41
     42static inline void pte_free(struct mm_struct *mm, pgtable_t pgtable)
     43{
     44	free_pointer_table(pgtable, TABLE_PTE);
     45}
     46
     47static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pgtable,
     48				  unsigned long address)
     49{
     50	free_pointer_table(pgtable, TABLE_PTE);
     51}
     52
     53
     54static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
     55{
     56	return get_pointer_table(TABLE_PMD);
     57}
     58
     59static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
     60{
     61	return free_pointer_table(pmd, TABLE_PMD);
     62}
     63
     64static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
     65				 unsigned long address)
     66{
     67	return free_pointer_table(pmd, TABLE_PMD);
     68}
     69
     70
     71static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
     72{
     73	free_pointer_table(pgd, TABLE_PGD);
     74}
     75
     76static inline pgd_t *pgd_alloc(struct mm_struct *mm)
     77{
     78	return get_pointer_table(TABLE_PGD);
     79}
     80
     81
     82static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
     83{
     84	pmd_set(pmd, pte);
     85}
     86
     87static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page)
     88{
     89	pmd_set(pmd, page);
     90}
     91
     92static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
     93{
     94	pud_set(pud, pmd);
     95}
     96
     97#endif /* _MOTOROLA_PGALLOC_H */