/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_PAGE_DEFS_H
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#define _ASM_X86_PAGE_DEFS_H
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#include <linux/const.h>
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#include <linux/types.h>
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#include <linux/mem_encrypt.h>
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/* PAGE_SHIFT determines the page size */
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#define PAGE_SHIFT 12
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#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
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#define PAGE_MASK (~(PAGE_SIZE-1))
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#define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT)
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#define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1))
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#define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT)
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#define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1))
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#define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1)
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/* Cast *PAGE_MASK to a signed type so that it is sign-extended if
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virtual addresses are 32-bits but physical addresses are larger
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(ie, 32-bit PAE). */
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#define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK)
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#define PHYSICAL_PMD_PAGE_MASK (((signed long)PMD_PAGE_MASK) & __PHYSICAL_MASK)
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#define PHYSICAL_PUD_PAGE_MASK (((signed long)PUD_PAGE_MASK) & __PHYSICAL_MASK)
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#define HPAGE_SHIFT PMD_SHIFT
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#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT)
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#define HPAGE_MASK (~(HPAGE_SIZE - 1))
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#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
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#define HUGE_MAX_HSTATE 2
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#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
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#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
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#define __PHYSICAL_START ALIGN(CONFIG_PHYSICAL_START, \
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CONFIG_PHYSICAL_ALIGN)
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#define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START)
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#ifdef CONFIG_X86_64
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#include <asm/page_64_types.h>
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#define IOREMAP_MAX_ORDER (PUD_SHIFT)
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#else
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#include <asm/page_32_types.h>
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#define IOREMAP_MAX_ORDER (PMD_SHIFT)
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#endif /* CONFIG_X86_64 */
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#ifndef __ASSEMBLY__
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#ifdef CONFIG_DYNAMIC_PHYSICAL_MASK
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extern phys_addr_t physical_mask;
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#define __PHYSICAL_MASK physical_mask
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#else
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#define __PHYSICAL_MASK ((phys_addr_t)((1ULL << __PHYSICAL_MASK_SHIFT) - 1))
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#endif
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extern int devmem_is_allowed(unsigned long pagenr);
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extern unsigned long max_low_pfn_mapped;
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extern unsigned long max_pfn_mapped;
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static inline phys_addr_t get_max_mapped(void)
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{
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return (phys_addr_t)max_pfn_mapped << PAGE_SHIFT;
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}
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bool pfn_range_is_mapped(unsigned long start_pfn, unsigned long end_pfn);
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extern void initmem_init(void);
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#endif /* !__ASSEMBLY__ */
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#endif /* _ASM_X86_PAGE_DEFS_H */
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