| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H |
| 3 | #define _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H |
| 4 | |
| 5 | static inline pte_t *hugepd_page(hugepd_t hpd) |
| 6 | { |
| 7 | if (WARN_ON(!hugepd_ok(hpd))) |
| 8 | return NULL; |
| 9 | |
| 10 | return (pte_t *)((hpd_val(hpd) & ~HUGEPD_SHIFT_MASK) | PD_HUGE); |
| 11 | } |
| 12 | |
| 13 | static inline unsigned int hugepd_shift(hugepd_t hpd) |
| 14 | { |
| 15 | return hpd_val(hpd) & HUGEPD_SHIFT_MASK; |
| 16 | } |
| 17 | |
| 18 | static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr, |
| 19 | unsigned int pdshift) |
| 20 | { |
| 21 | /* |
| 22 | * On FSL BookE, we have multiple higher-level table entries that |
| 23 | * point to the same hugepte. Just use the first one since they're all |
| 24 | * identical. So for that case, idx=0. |
| 25 | */ |
| 26 | return hugepd_page(hpd); |
| 27 | } |
| 28 | |
| 29 | void flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr); |
| 30 | |
| 31 | static inline void hugepd_populate(hugepd_t *hpdp, pte_t *new, unsigned int pshift) |
| 32 | { |
| 33 | /* We use the old format for PPC_FSL_BOOK3E */ |
| 34 | *hpdp = __hugepd(((unsigned long)new & ~PD_HUGE) | pshift); |
| 35 | } |
| 36 | |
| 37 | static inline int check_and_get_huge_psize(int shift) |
| 38 | { |
| 39 | if (shift & 1) /* Not a power of 4 */ |
| 40 | return -EINVAL; |
| 41 | |
| 42 | return shift_to_mmu_psize(shift); |
| 43 | } |
| 44 | |
| 45 | #endif /* _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H */ |