^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright 2003 PathScale Inc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Derived from include/asm-i386/pgtable.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #ifndef __UM_PGTABLE_3LEVEL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #define __UM_PGTABLE_3LEVEL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <asm-generic/pgtable-nopud.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) /* PGDIR_SHIFT determines what a third-level page table entry can map */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #ifdef CONFIG_64BIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define PGDIR_SHIFT 30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define PGDIR_SHIFT 31
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define PGDIR_SIZE (1UL << PGDIR_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define PGDIR_MASK (~(PGDIR_SIZE-1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) /* PMD_SHIFT determines the size of the area a second-level page table can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define PMD_SHIFT 21
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define PMD_SIZE (1UL << PMD_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define PMD_MASK (~(PMD_SIZE-1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * entries per page directory level
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define PTRS_PER_PTE 512
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #ifdef CONFIG_64BIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define PTRS_PER_PMD 512
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define PTRS_PER_PGD 512
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define PTRS_PER_PMD 1024
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define PTRS_PER_PGD 1024
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define USER_PTRS_PER_PGD ((TASK_SIZE + (PGDIR_SIZE - 1)) / PGDIR_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define FIRST_USER_ADDRESS 0UL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define pte_ERROR(e) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) printk("%s:%d: bad pte %p(%016lx).\n", __FILE__, __LINE__, &(e), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) pte_val(e))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define pmd_ERROR(e) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) printk("%s:%d: bad pmd %p(%016lx).\n", __FILE__, __LINE__, &(e), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) pmd_val(e))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define pgd_ERROR(e) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) printk("%s:%d: bad pgd %p(%016lx).\n", __FILE__, __LINE__, &(e), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) pgd_val(e))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define pud_none(x) (!(pud_val(x) & ~_PAGE_NEWPAGE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define pud_bad(x) ((pud_val(x) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define pud_present(x) (pud_val(x) & _PAGE_PRESENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define pud_populate(mm, pud, pmd) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) set_pud(pud, __pud(_PAGE_TABLE + __pa(pmd)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #ifdef CONFIG_64BIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define set_pud(pudptr, pudval) set_64bit((u64 *) (pudptr), pud_val(pudval))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define set_pud(pudptr, pudval) (*(pudptr) = (pudval))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static inline int pgd_newpage(pgd_t pgd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return(pgd_val(pgd) & _PAGE_NEWPAGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) static inline void pgd_mkuptodate(pgd_t pgd) { pgd_val(pgd) &= ~_PAGE_NEWPAGE; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #ifdef CONFIG_64BIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define set_pmd(pmdptr, pmdval) set_64bit((u64 *) (pmdptr), pmd_val(pmdval))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static inline void pud_clear (pud_t *pud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) set_pud(pud, __pud(_PAGE_NEWPAGE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define pud_page(pud) phys_to_page(pud_val(pud) & PAGE_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define pud_page_vaddr(pud) ((unsigned long) __va(pud_val(pud) & PAGE_MASK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static inline unsigned long pte_pfn(pte_t pte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) return phys_to_pfn(pte_val(pte));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) pte_t pte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) phys_t phys = pfn_to_phys(page_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) pte_set_val(pte, phys, pgprot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) return pte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static inline pmd_t pfn_pmd(unsigned long page_nr, pgprot_t pgprot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return __pmd((page_nr << PAGE_SHIFT) | pgprot_val(pgprot));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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