82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H
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#define _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H
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#define PAGE_SHIFT_8M 23
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static inline pte_t *hugepd_page(hugepd_t hpd)
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{
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BUG_ON(!hugepd_ok(hpd));
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return (pte_t *)__va(hpd_val(hpd) & ~HUGEPD_SHIFT_MASK);
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}
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static inline unsigned int hugepd_shift(hugepd_t hpd)
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{
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return PAGE_SHIFT_8M;
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}
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static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
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unsigned int pdshift)
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{
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unsigned long idx = (addr & (SZ_4M - 1)) >> PAGE_SHIFT;
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return hugepd_page(hpd) + idx;
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}
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static inline void flush_hugetlb_page(struct vm_area_struct *vma,
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unsigned long vmaddr)
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{
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flush_tlb_page(vma, vmaddr);
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}
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static inline void hugepd_populate(hugepd_t *hpdp, pte_t *new, unsigned int pshift)
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{
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*hpdp = __hugepd(__pa(new) | _PMD_USER | _PMD_PRESENT | _PMD_PAGE_8M);
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}
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static inline void hugepd_populate_kernel(hugepd_t *hpdp, pte_t *new, unsigned int pshift)
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{
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*hpdp = __hugepd(__pa(new) | _PMD_PRESENT | _PMD_PAGE_8M);
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}
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static inline int check_and_get_huge_psize(int shift)
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{
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return shift_to_mmu_psize(shift);
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}
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#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
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void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte);
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#define __HAVE_ARCH_HUGE_PTE_CLEAR
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static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
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pte_t *ptep, unsigned long sz)
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{
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pte_update(mm, addr, ptep, ~0UL, 0, 1);
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}
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#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
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static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
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unsigned long addr, pte_t *ptep)
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{
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unsigned long clr = ~pte_val(pte_wrprotect(__pte(~0)));
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unsigned long set = pte_val(pte_wrprotect(__pte(0)));
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pte_update(mm, addr, ptep, clr, set, 1);
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}
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#ifdef CONFIG_PPC_4K_PAGES
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static inline pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags)
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{
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size_t size = 1UL << shift;
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if (size == SZ_16K)
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return __pte(pte_val(entry) | _PAGE_SPS);
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else
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return __pte(pte_val(entry) | _PAGE_SPS | _PAGE_HUGE);
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}
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#define arch_make_huge_pte arch_make_huge_pte
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#endif
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#endif /* _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H */
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