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56 lines
1.4 KiB
56 lines
1.4 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _M68KNOMMU_PGTABLE_H |
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#define _M68KNOMMU_PGTABLE_H |
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#include <asm-generic/pgtable-nopud.h> |
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/* |
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* (C) Copyright 2000-2002, Greg Ungerer <[email protected]> |
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*/ |
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#include <linux/slab.h> |
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#include <asm/processor.h> |
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#include <asm/page.h> |
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#include <asm/io.h> |
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/* |
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* Trivial page table functions. |
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*/ |
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#define pgd_present(pgd) (1) |
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#define pgd_none(pgd) (0) |
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#define pgd_bad(pgd) (0) |
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#define pgd_clear(pgdp) |
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#define kern_addr_valid(addr) (1) |
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#define pmd_offset(a, b) ((void *)0) |
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#define PAGE_NONE __pgprot(0) |
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#define PAGE_SHARED __pgprot(0) |
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#define PAGE_COPY __pgprot(0) |
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#define PAGE_READONLY __pgprot(0) |
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#define PAGE_KERNEL __pgprot(0) |
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extern void paging_init(void); |
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#define swapper_pg_dir ((pgd_t *) 0) |
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#define __swp_type(x) (0) |
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#define __swp_offset(x) (0) |
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#define __swp_entry(typ,off) ((swp_entry_t) { ((typ) | ((off) << 7)) }) |
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#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) |
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#define __swp_entry_to_pte(x) ((pte_t) { (x).val }) |
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/* |
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* ZERO_PAGE is a global shared page that is always zero: used |
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* for zero-mapped memory areas etc.. |
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*/ |
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#define ZERO_PAGE(vaddr) (virt_to_page(0)) |
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/* |
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* All 32bit addresses are effectively valid for vmalloc... |
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* Sort of meaningless for non-VM targets. |
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*/ |
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#define VMALLOC_START 0 |
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#define VMALLOC_END 0xffffffff |
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#define KMAP_START 0 |
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#define KMAP_END 0xffffffff |
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#endif /* _M68KNOMMU_PGTABLE_H */
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