46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H
|
|
#define _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H
|
|
|
|
static inline pte_t *hugepd_page(hugepd_t hpd)
|
|
{
|
|
if (WARN_ON(!hugepd_ok(hpd)))
|
|
return NULL;
|
|
|
|
return (pte_t *)((hpd_val(hpd) & ~HUGEPD_SHIFT_MASK) | PD_HUGE);
|
|
}
|
|
|
|
static inline unsigned int hugepd_shift(hugepd_t hpd)
|
|
{
|
|
return hpd_val(hpd) & HUGEPD_SHIFT_MASK;
|
|
}
|
|
|
|
static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
|
|
unsigned int pdshift)
|
|
{
|
|
/*
|
|
* On FSL BookE, we have multiple higher-level table entries that
|
|
* point to the same hugepte. Just use the first one since they're all
|
|
* identical. So for that case, idx=0.
|
|
*/
|
|
return hugepd_page(hpd);
|
|
}
|
|
|
|
void flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
|
|
|
|
static inline void hugepd_populate(hugepd_t *hpdp, pte_t *new, unsigned int pshift)
|
|
{
|
|
/* We use the old format for PPC_FSL_BOOK3E */
|
|
*hpdp = __hugepd(((unsigned long)new & ~PD_HUGE) | pshift);
|
|
}
|
|
|
|
static inline int check_and_get_huge_psize(int shift)
|
|
{
|
|
if (shift & 1) /* Not a power of 4 */
|
|
return -EINVAL;
|
|
|
|
return shift_to_mmu_psize(shift);
|
|
}
|
|
|
|
#endif /* _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H */
|