^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 _PARISC_PAGE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define _PARISC_PAGE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/const.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #if defined(CONFIG_PARISC_PAGE_SIZE_4KB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) # define PAGE_SHIFT 12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #elif defined(CONFIG_PARISC_PAGE_SIZE_16KB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) # define PAGE_SHIFT 14
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #elif defined(CONFIG_PARISC_PAGE_SIZE_64KB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) # define PAGE_SHIFT 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) # error "unknown default kernel page size"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define PAGE_MASK (~(PAGE_SIZE-1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #ifndef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <asm/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <asm/cache.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define clear_page(page) clear_page_asm((void *)(page))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define copy_page(to, from) copy_page_asm((void *)(to), (void *)(from))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) void clear_page_asm(void *page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) void copy_page_asm(void *to, void *from);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define clear_user_page(vto, vaddr, page) clear_page_asm(vto)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct page *pg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * These are used to make use of C type-checking..
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define STRICT_MM_TYPECHECKS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #ifdef STRICT_MM_TYPECHECKS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) typedef struct { unsigned long pte; } pte_t; /* either 32 or 64bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) /* NOTE: even on 64 bits, these entries are __u32 because we allocate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * the pmd and pgd in ZONE_DMA (i.e. under 4GB) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) typedef struct { __u32 pgd; } pgd_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) typedef struct { unsigned long pgprot; } pgprot_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #if CONFIG_PGTABLE_LEVELS == 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) typedef struct { __u32 pmd; } pmd_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define __pmd(x) ((pmd_t) { (x) } )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /* pXd_val() do not work as lvalues, so make sure we don't use them as such. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define pmd_val(x) ((x).pmd + 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define pte_val(x) ((x).pte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define pgd_val(x) ((x).pgd + 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define pgprot_val(x) ((x).pgprot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define __pte(x) ((pte_t) { (x) } )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define __pgd(x) ((pgd_t) { (x) } )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define __pgprot(x) ((pgprot_t) { (x) } )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * .. while these make it easier on the compiler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) typedef unsigned long pte_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #if CONFIG_PGTABLE_LEVELS == 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) typedef __u32 pmd_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define pmd_val(x) (x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define __pmd(x) (x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) typedef __u32 pgd_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) typedef unsigned long pgprot_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define pte_val(x) (x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define pgd_val(x) (x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define pgprot_val(x) (x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define __pte(x) (x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define __pgd(x) (x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define __pgprot(x) (x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #endif /* STRICT_MM_TYPECHECKS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #if CONFIG_PGTABLE_LEVELS == 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #define set_pud(pudptr, pudval) (*(pudptr) = (pudval))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) typedef struct page *pgtable_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) typedef struct __physmem_range {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) unsigned long start_pfn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) unsigned long pages; /* PAGE_SIZE pages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) } physmem_range_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) extern physmem_range_t pmem_ranges[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) extern int npmem_ranges;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #endif /* !__ASSEMBLY__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /* WARNING: The definitions below must match exactly to sizeof(pte_t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * etc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #ifdef CONFIG_64BIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #define BITS_PER_PTE_ENTRY 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #define BITS_PER_PMD_ENTRY 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define BITS_PER_PGD_ENTRY 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) #define BITS_PER_PTE_ENTRY 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) #define BITS_PER_PMD_ENTRY 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) #define BITS_PER_PGD_ENTRY BITS_PER_PMD_ENTRY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) #define PGD_ENTRY_SIZE (1UL << BITS_PER_PGD_ENTRY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #define PMD_ENTRY_SIZE (1UL << BITS_PER_PMD_ENTRY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) #define PTE_ENTRY_SIZE (1UL << BITS_PER_PTE_ENTRY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) #define LINUX_GATEWAY_SPACE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) /* This governs the relationship between virtual and physical addresses.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * If you alter it, make sure to take care of our various fixed mapping
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * segments in fixmap.h */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) #ifdef CONFIG_64BIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) #define __PAGE_OFFSET_DEFAULT (0x40000000) /* 1GB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #define __PAGE_OFFSET_DEFAULT (0x10000000) /* 256MB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #if defined(BOOTLOADER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) #define __PAGE_OFFSET (0) /* bootloader uses physical addresses */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) #define __PAGE_OFFSET __PAGE_OFFSET_DEFAULT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #endif /* BOOTLOADER */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /* The size of the gateway page (we leave lots of room for expansion) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) #define GATEWAY_PAGE_SIZE 0x4000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) /* The start of the actual kernel binary---used in vmlinux.lds.S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * Leave some space after __PAGE_OFFSET for detecting kernel null
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * ptr derefs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) #define KERNEL_BINARY_TEXT_START (__PAGE_OFFSET + 0x100000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /* These macros don't work for 64-bit C code -- don't allow in C at all */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #ifdef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) # define PA(x) ((x)-__PAGE_OFFSET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) # define VA(x) ((x)+__PAGE_OFFSET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) #define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) #ifndef CONFIG_SPARSEMEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #define pfn_valid(pfn) ((pfn) < max_mapnr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) #ifdef CONFIG_HUGETLB_PAGE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) #define HPAGE_SHIFT PMD_SHIFT /* fixed for transparent huge pages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #define HPAGE_SIZE ((1UL) << HPAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) #define HPAGE_MASK (~(HPAGE_SIZE - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) #if defined(CONFIG_64BIT) && defined(CONFIG_PARISC_PAGE_SIZE_4KB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) # define REAL_HPAGE_SHIFT 20 /* 20 = 1MB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) # define _HUGE_PAGE_SIZE_ENCODING_DEFAULT _PAGE_SIZE_ENCODING_1M
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) #elif !defined(CONFIG_64BIT) && defined(CONFIG_PARISC_PAGE_SIZE_4KB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) # define REAL_HPAGE_SHIFT 22 /* 22 = 4MB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) # define _HUGE_PAGE_SIZE_ENCODING_DEFAULT _PAGE_SIZE_ENCODING_4M
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) # define REAL_HPAGE_SHIFT 24 /* 24 = 16MB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) # define _HUGE_PAGE_SIZE_ENCODING_DEFAULT _PAGE_SIZE_ENCODING_16M
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) #endif /* CONFIG_HUGETLB_PAGE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) #include <asm-generic/memory_model.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) #include <asm-generic/getorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) #include <asm/pdc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) #define PAGE0 ((struct zeropage *)absolute_pointer(__PAGE_OFFSET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) /* DEFINITION OF THE ZERO-PAGE (PAG0) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) /* based on work by Jason Eckhardt (jason@equator.com) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) #endif /* _PARISC_PAGE_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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