45 lines
1.1 KiB
C
45 lines
1.1 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 ((hpd_val(hpd) & _PMD_PAGE_MASK) >> 1) + 17;
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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 & ((1UL << pdshift) - 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 |
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(pshift == PAGE_SHIFT_8M ? _PMD_PAGE_8M : _PMD_PAGE_512K));
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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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#endif /* _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H */
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