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_SH_PGTABLE_3LEVEL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define __ASM_SH_PGTABLE_3LEVEL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <asm-generic/pgtable-nopud.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * Some cores need a 3-level page table layout, for example when using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * 64-bit PTEs and 4K pages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define PAGETABLE_LEVELS	3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define PTE_MAGNITUDE		3	/* 64-bit PTEs on SH-X2 TLB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /* PGD bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define PGDIR_SHIFT		30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define PTRS_PER_PGD		4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define USER_PTRS_PER_PGD	2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* PMD bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define PMD_SHIFT	(PAGE_SHIFT + (PAGE_SHIFT - PTE_MAGNITUDE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define PMD_SIZE	(1UL << PMD_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define PMD_MASK	(~(PMD_SIZE-1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define PTRS_PER_PMD	((1 << PGDIR_SHIFT) / PMD_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define pmd_ERROR(e) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	printk("%s:%d: bad pmd %016llx.\n", __FILE__, __LINE__, pmd_val(e))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) typedef struct { unsigned long long pmd; } pmd_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define pmd_val(x)	((x).pmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define __pmd(x)	((pmd_t) { (x) } )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static inline unsigned long pud_page_vaddr(pud_t pud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	return pud_val(pud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /* only used by the stubbed out hugetlb gup code, should never be called */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define pud_page(pud)		NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define pud_none(x)	(!pud_val(x))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define pud_present(x)	(pud_val(x))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define pud_clear(xp)	do { set_pud(xp, __pud(0)); } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define	pud_bad(x)	(pud_val(x) & ~PAGE_MASK)
^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)  * (puds are folded into pgds so this doesn't get actually called,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)  * but the define is needed for a generic inline function.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #endif /* __ASM_SH_PGTABLE_3LEVEL_H */