1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_PGTABLE_TYPES_H
3 #define _ASM_POWERPC_PGTABLE_TYPES_H
6 #if defined(CONFIG_PPC_8xx) && defined(CONFIG_PPC_16K_PAGES)
7 typedef struct { pte_basic_t pte, pte1, pte2, pte3; } pte_t;
9 typedef struct { pte_basic_t pte; } pte_t;
11 #define __pte(x) ((pte_t) { (x) })
12 static inline pte_basic_t pte_val(pte_t x)
19 typedef struct { unsigned long pmd; } pmd_t;
20 #define __pmd(x) ((pmd_t) { (x) })
21 static inline unsigned long pmd_val(pmd_t x)
26 /* 64 bit always use 4 level table. */
27 typedef struct { unsigned long pud; } pud_t;
28 #define __pud(x) ((pud_t) { (x) })
29 static inline unsigned long pud_val(pud_t x)
33 #endif /* CONFIG_PPC64 */
36 typedef struct { unsigned long pgd; } pgd_t;
37 #define __pgd(x) ((pgd_t) { (x) })
38 static inline unsigned long pgd_val(pgd_t x)
43 /* Page protection bits */
44 typedef struct { unsigned long pgprot; } pgprot_t;
45 #define pgprot_val(x) ((x).pgprot)
46 #define __pgprot(x) ((pgprot_t) { (x) })
49 * With hash config 64k pages additionally define a bigger "real PTE" type that
50 * gathers the "second half" part of the PTE for pseudo 64k pages
52 #ifdef CONFIG_PPC_64K_PAGES
53 typedef struct { pte_t pte; unsigned long hidx; } real_pte_t;
55 typedef struct { pte_t pte; } real_pte_t;
58 #ifdef CONFIG_PPC_BOOK3S_64
59 #include <asm/cmpxchg.h>
61 static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new)
63 unsigned long *p = (unsigned long *)ptep;
65 /* See comment in switch_mm_irqs_off() */
66 return pte_val(old) == __cmpxchg_u64(p, pte_val(old), pte_val(new));
70 typedef struct { unsigned long pd; } hugepd_t;
71 #define __hugepd(x) ((hugepd_t) { (x) })
72 static inline unsigned long hpd_val(hugepd_t x)
77 #endif /* _ASM_POWERPC_PGTABLE_TYPES_H */