Orange Pi5 kernel

^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) #ifndef _ASM_IA64_PGALLOC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define _ASM_IA64_PGALLOC_H
^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)  * This file contains the functions and defines necessary to allocate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * page tables.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * This hopefully works with any (fixed) ia-64 page-size, as defined
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * in <asm/page.h> (currently 8192).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * Copyright (C) 1998-2001 Hewlett-Packard Co
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  *	David Mosberger-Tang <davidm@hpl.hp.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  * Copyright (C) 2000, Goutham Rao <goutham.rao@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/compiler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/page-flags.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/threads.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <asm-generic/pgalloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <asm/mmu_context.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static inline pgd_t *pgd_alloc(struct mm_struct *mm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	return (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #if CONFIG_PGTABLE_LEVELS == 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) p4d_populate(struct mm_struct *mm, p4d_t * p4d_entry, pud_t * pud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	p4d_val(*p4d_entry) = __pa(pud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define __pud_free_tlb(tlb, pud, address)	pud_free((tlb)->mm, pud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #endif /* CONFIG_PGTABLE_LEVELS == 4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	pud_val(*pud_entry) = __pa(pmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define __pmd_free_tlb(tlb, pmd, address)	pmd_free((tlb)->mm, pmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) pmd_populate(struct mm_struct *mm, pmd_t * pmd_entry, pgtable_t pte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	pmd_val(*pmd_entry) = page_to_phys(pte);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define pmd_pgtable(pmd) pmd_page(pmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) pmd_populate_kernel(struct mm_struct *mm, pmd_t * pmd_entry, pte_t * pte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	pmd_val(*pmd_entry) = __pa(pte);
^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) #define __pte_free_tlb(tlb, pte, address)	pte_free((tlb)->mm, pte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #endif				/* _ASM_IA64_PGALLOC_H */