Release 4.14 arch/metag/include/asm/page.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _METAG_PAGE_H
#define _METAG_PAGE_H
#include <linux/const.h>
#include <asm/metag_mem.h>
/* PAGE_SHIFT determines the page size */
#if defined(CONFIG_PAGE_SIZE_4K)
#define PAGE_SHIFT 12
#elif defined(CONFIG_PAGE_SIZE_8K)
#define PAGE_SHIFT 13
#elif defined(CONFIG_PAGE_SIZE_16K)
#define PAGE_SHIFT 14
#endif
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#if defined(CONFIG_HUGETLB_PAGE_SIZE_8K)
# define HPAGE_SHIFT 13
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_16K)
# define HPAGE_SHIFT 14
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_32K)
# define HPAGE_SHIFT 15
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
# define HPAGE_SHIFT 16
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_128K)
# define HPAGE_SHIFT 17
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_256K)
# define HPAGE_SHIFT 18
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K)
# define HPAGE_SHIFT 19
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_1M)
# define HPAGE_SHIFT 20
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_2M)
# define HPAGE_SHIFT 21
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_4M)
# define HPAGE_SHIFT 22
#endif
#ifdef CONFIG_HUGETLB_PAGE
# define HPAGE_SIZE (1UL << HPAGE_SHIFT)
# define HPAGE_MASK (~(HPAGE_SIZE-1))
# define HUGETLB_PAGE_ORDER (HPAGE_SHIFT-PAGE_SHIFT)
/*
* We define our own hugetlb_get_unmapped_area so we don't corrupt 2nd level
* page tables with normal pages in them.
*/
# define HUGEPT_SHIFT (22)
# define HUGEPT_ALIGN (1 << HUGEPT_SHIFT)
# define HUGEPT_MASK (HUGEPT_ALIGN - 1)
# define ALIGN_HUGEPT(x) ALIGN(x, HUGEPT_ALIGN)
# define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
#endif
#ifndef __ASSEMBLY__
/* On the Meta, we would like to know if the address (heap) we have is
* in local or global space.
*/
#define is_global_space(addr) ((addr) > 0x7fffffff)
#define is_local_space(addr) (!is_global_space(addr))
extern void clear_page(void *to);
extern void copy_page(void *to, void *from);
#define clear_user_page(page, vaddr, pg) clear_page(page)
#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
/*
* These are used to make use of C type-checking..
*/
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long pgd; } pgd_t;
typedef struct { unsigned long pgprot; } pgprot_t;
typedef struct page *pgtable_t;
#define pte_val(x) ((x).pte)
#define pgd_val(x) ((x).pgd)
#define pgprot_val(x) ((x).pgprot)
#define __pte(x) ((pte_t) { (x) })
#define __pgd(x) ((pgd_t) { (x) })
#define __pgprot(x) ((pgprot_t) { (x) })
/* The kernel must now ALWAYS live at either 0xC0000000 or 0x40000000 - that
* being either global or local space.
*/
#define PAGE_OFFSET (CONFIG_PAGE_OFFSET)
#if PAGE_OFFSET >= LINGLOBAL_BASE
#define META_MEMORY_BASE LINGLOBAL_BASE
#define META_MEMORY_LIMIT LINGLOBAL_LIMIT
#else
#define META_MEMORY_BASE LINLOCAL_BASE
#define META_MEMORY_LIMIT LINLOCAL_LIMIT
#endif
/* Offset between physical and virtual mapping of kernel memory. */
extern unsigned int meta_memoffset;
#define __pa(x) ((unsigned long)(((unsigned long)(x)) - meta_memoffset))
#define __va(x) ((void *)((unsigned long)(((unsigned long)(x)) + meta_memoffset)))
extern unsigned long pfn_base;
#define ARCH_PFN_OFFSET (pfn_base)
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define page_to_virt(page) __va(page_to_pfn(page) << PAGE_SHIFT)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
#ifdef CONFIG_FLATMEM
extern unsigned long max_pfn;
extern unsigned long min_low_pfn;
#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_pfn)
#endif
#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
#endif /* __ASSMEBLY__ */
#endif /* _METAG_PAGE_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Hogan | 470 | 99.79% | 1 | 50.00% |
| Greg Kroah-Hartman | 1 | 0.21% | 1 | 50.00% |
| Total | 471 | 100.00% | 2 | 100.00% |
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