1 files changed, 78 insertions, 0 deletions
diff --git a/arch/x86/include/asm/page_types.h b/arch/x86/include/asm/page_types.h
new file mode 100644
index 000000000..a506a4114
--- /dev/null
+++ b/arch/x86/include/asm/page_types.h
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_X86_PAGE_DEFS_H
+#define _ASM_X86_PAGE_DEFS_H
+
+#include <linux/const.h>
+#include <linux/types.h>
+#include <linux/mem_encrypt.h>
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT		12
+#define PAGE_SIZE		(_AC(1,UL) << PAGE_SHIFT)
+#define PAGE_MASK		(~(PAGE_SIZE-1))
+
+#define PMD_PAGE_SIZE		(_AC(1, UL) << PMD_SHIFT)
+#define PMD_PAGE_MASK		(~(PMD_PAGE_SIZE-1))
+
+#define PUD_PAGE_SIZE		(_AC(1, UL) << PUD_SHIFT)
+#define PUD_PAGE_MASK		(~(PUD_PAGE_SIZE-1))
+
+#define __VIRTUAL_MASK		((1UL << __VIRTUAL_MASK_SHIFT) - 1)
+
+/* Cast *PAGE_MASK to a signed type so that it is sign-extended if
+   virtual addresses are 32-bits but physical addresses are larger
+   (ie, 32-bit PAE). */
+#define PHYSICAL_PAGE_MASK	(((signed long)PAGE_MASK) & __PHYSICAL_MASK)
+#define PHYSICAL_PMD_PAGE_MASK	(((signed long)PMD_PAGE_MASK) & __PHYSICAL_MASK)
+#define PHYSICAL_PUD_PAGE_MASK	(((signed long)PUD_PAGE_MASK) & __PHYSICAL_MASK)
+
+#define HPAGE_SHIFT		PMD_SHIFT
+#define HPAGE_SIZE		(_AC(1,UL) << HPAGE_SHIFT)
+#define HPAGE_MASK		(~(HPAGE_SIZE - 1))
+#define HUGETLB_PAGE_ORDER	(HPAGE_SHIFT - PAGE_SHIFT)
+
+#define HUGE_MAX_HSTATE 2
+
+#define PAGE_OFFSET		((unsigned long)__PAGE_OFFSET)
+
+#define VM_DATA_DEFAULT_FLAGS	VM_DATA_FLAGS_TSK_EXEC
+
+#define __PHYSICAL_START	ALIGN(CONFIG_PHYSICAL_START, \
+				      CONFIG_PHYSICAL_ALIGN)
+
+#define __START_KERNEL		(__START_KERNEL_map + __PHYSICAL_START)
+
+#ifdef CONFIG_X86_64
+#include <asm/page_64_types.h>
+#define IOREMAP_MAX_ORDER       (PUD_SHIFT)
+#else
+#include <asm/page_32_types.h>
+#define IOREMAP_MAX_ORDER       (PMD_SHIFT)
+#endif	/* CONFIG_X86_64 */
+
+#ifndef __ASSEMBLY__
+
+#ifdef CONFIG_DYNAMIC_PHYSICAL_MASK
+extern phys_addr_t physical_mask;
+#define __PHYSICAL_MASK		physical_mask
+#else
+#define __PHYSICAL_MASK		((phys_addr_t)((1ULL << __PHYSICAL_MASK_SHIFT) - 1))
+#endif
+
+extern int devmem_is_allowed(unsigned long pagenr);
+
+extern unsigned long max_low_pfn_mapped;
+extern unsigned long max_pfn_mapped;
+
+static inline phys_addr_t get_max_mapped(void)
+{
+	return (phys_addr_t)max_pfn_mapped << PAGE_SHIFT;
+}
+
+bool pfn_range_is_mapped(unsigned long start_pfn, unsigned long end_pfn);
+
+extern void initmem_init(void);
+
+#endif	/* !__ASSEMBLY__ */
+
+#endif	/* _ASM_X86_PAGE_DEFS_H */