1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H
3#define _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H
4
5static 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
13static inline unsigned int hugepd_shift(hugepd_t hpd)
14{
15	return hpd_val(hpd) & HUGEPD_SHIFT_MASK;
16}
17
18static 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
29void flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
30
31static 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
37static 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 */
46