Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 92 insertions, 0 deletions

diff --git a/arch/alpha/include/asm/page.h b/arch/alpha/include/asm/page.h
new file mode 100644
index 0000000000..4db1ebc0ed
--- /dev/null
+++ b/arch/alpha/include/asm/page.h
@@ -0,0 +1,92 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ALPHA_PAGE_H
+#define _ALPHA_PAGE_H
+
+#include <linux/const.h>
+#include <asm/pal.h>
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT	13
+#define PAGE_SIZE	(_AC(1,UL) << PAGE_SHIFT)
+#define PAGE_MASK	(~(PAGE_SIZE-1))
+
+#ifndef __ASSEMBLY__
+
+#define STRICT_MM_TYPECHECKS
+
+extern void clear_page(void *page);
+#define clear_user_page(page, vaddr, pg)	clear_page(page)
+
+#define vma_alloc_zeroed_movable_folio(vma, vaddr) \
+	vma_alloc_folio(GFP_HIGHUSER_MOVABLE | __GFP_ZERO, 0, vma, vaddr, false)
+
+extern void copy_page(void * _to, void * _from);
+#define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)
+
+#ifdef STRICT_MM_TYPECHECKS
+/*
+ * These are used to make use of C type-checking..
+ */
+typedef struct { unsigned long pte; } pte_t;
+typedef struct { unsigned long pmd; } pmd_t;
+typedef struct { unsigned long pgd; } pgd_t;
+typedef struct { unsigned long pgprot; } pgprot_t;
+
+#define pte_val(x)	((x).pte)
+#define pmd_val(x)	((x).pmd)
+#define pgd_val(x)	((x).pgd)
+#define pgprot_val(x)	((x).pgprot)
+
+#define __pte(x)	((pte_t) { (x) } )
+#define __pmd(x)	((pmd_t) { (x) } )
+#define __pgd(x)	((pgd_t) { (x) } )
+#define __pgprot(x)	((pgprot_t) { (x) } )
+
+#else
+/*
+ * .. while these make it easier on the compiler
+ */
+typedef unsigned long pte_t;
+typedef unsigned long pmd_t;
+typedef unsigned long pgd_t;
+typedef unsigned long pgprot_t;
+
+#define pte_val(x)	(x)
+#define pmd_val(x)	(x)
+#define pgd_val(x)	(x)
+#define pgprot_val(x)	(x)
+
+#define __pte(x)	(x)
+#define __pgd(x)	(x)
+#define __pgprot(x)	(x)
+
+#endif /* STRICT_MM_TYPECHECKS */
+
+typedef struct page *pgtable_t;
+
+#ifdef USE_48_BIT_KSEG
+#define PAGE_OFFSET		0xffff800000000000UL
+#else
+#define PAGE_OFFSET		0xfffffc0000000000UL
+#endif
+
+#else
+
+#ifdef USE_48_BIT_KSEG
+#define PAGE_OFFSET		0xffff800000000000
+#else
+#define PAGE_OFFSET		0xfffffc0000000000
+#endif
+
+#endif /* !__ASSEMBLY__ */
+
+#define __pa(x)			((unsigned long) (x) - PAGE_OFFSET)
+#define __va(x)			((void *)((unsigned long) (x) + PAGE_OFFSET))
+
+#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
+#define virt_addr_valid(kaddr)	pfn_valid((__pa(kaddr) >> PAGE_SHIFT))
+
+#include <asm-generic/memory_model.h>
+#include <asm-generic/getorder.h>
+
+#endif /* _ALPHA_PAGE_H */