Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 2012 Regents of the University of California
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #ifndef _ASM_RISCV_PGTABLE_64_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #define _ASM_RISCV_PGTABLE_64_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/const.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define PGDIR_SHIFT     30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) /* Size of region mapped by a page global directory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define PGDIR_SIZE      (_AC(1, UL) << PGDIR_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define PGDIR_MASK      (~(PGDIR_SIZE - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define PMD_SHIFT       21
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /* Size of region mapped by a page middle directory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define PMD_SIZE        (_AC(1, UL) << PMD_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define PMD_MASK        (~(PMD_SIZE - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* Page Middle Directory entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	unsigned long pmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) } pmd_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define pmd_val(x)      ((x).pmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define __pmd(x)        ((pmd_t) { (x) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define PTRS_PER_PMD    (PAGE_SIZE / sizeof(pmd_t))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static inline int pud_present(pud_t pud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	return (pud_val(pud) & _PAGE_PRESENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static inline int pud_none(pud_t pud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	return (pud_val(pud) == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static inline int pud_bad(pud_t pud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	return !pud_present(pud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define pud_leaf	pud_leaf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static inline int pud_leaf(pud_t pud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	return pud_present(pud) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	       (pud_val(pud) & (_PAGE_READ | _PAGE_WRITE | _PAGE_EXEC));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static inline void set_pud(pud_t *pudp, pud_t pud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	*pudp = pud;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static inline void pud_clear(pud_t *pudp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	set_pud(pudp, __pud(0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static inline unsigned long pud_page_vaddr(pud_t pud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	return (unsigned long)pfn_to_virt(pud_val(pud) >> _PAGE_PFN_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static inline struct page *pud_page(pud_t pud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	return pfn_to_page(pud_val(pud) >> _PAGE_PFN_SHIFT);
^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 pmd_t pfn_pmd(unsigned long pfn, pgprot_t prot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 	return __pmd((pfn << _PAGE_PFN_SHIFT) | pgprot_val(prot));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static inline unsigned long _pmd_pfn(pmd_t pmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 	return pmd_val(pmd) >> _PAGE_PFN_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define pmd_ERROR(e) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 	pr_err("%s:%d: bad pmd %016lx.\n", __FILE__, __LINE__, pmd_val(e))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #endif /* _ASM_RISCV_PGTABLE_64_H */