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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #ifndef _M68KNOMMU_PGTABLE_H |
| 3 | #define _M68KNOMMU_PGTABLE_H |
| 4 | |
| 5 | #include <asm-generic/pgtable-nopud.h> |
| 6 | |
| 7 | /* |
| 8 | * (C) Copyright 2000-2002, Greg Ungerer <gerg@snapgear.com> |
| 9 | */ |
| 10 | |
| 11 | #include <linux/slab.h> |
| 12 | #include <asm/processor.h> |
| 13 | #include <asm/page.h> |
| 14 | #include <asm/io.h> |
| 15 | |
| 16 | /* |
| 17 | * Trivial page table functions. |
| 18 | */ |
| 19 | #define pgd_present(pgd) (1) |
| 20 | #define pgd_none(pgd) (0) |
| 21 | #define pgd_bad(pgd) (0) |
| 22 | #define pgd_clear(pgdp) |
| 23 | #define pmd_offset(a, b) ((void *)0) |
| 24 | |
| 25 | #define PAGE_NONE __pgprot(0) |
| 26 | #define PAGE_SHARED __pgprot(0) |
| 27 | #define PAGE_COPY __pgprot(0) |
| 28 | #define PAGE_READONLY __pgprot(0) |
| 29 | #define PAGE_KERNEL __pgprot(0) |
| 30 | |
| 31 | #define swapper_pg_dir ((pgd_t *) 0) |
| 32 | |
| 33 | /* |
| 34 | * ZERO_PAGE is a global shared page that is always zero: used |
| 35 | * for zero-mapped memory areas etc.. |
| 36 | */ |
| 37 | extern void *empty_zero_page; |
| 38 | #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) |
| 39 | |
| 40 | /* |
| 41 | * All 32bit addresses are effectively valid for vmalloc... |
| 42 | * Sort of meaningless for non-VM targets. |
| 43 | */ |
| 44 | #define VMALLOC_START 0 |
| 45 | #define VMALLOC_END 0xffffffff |
| 46 | #define KMAP_START 0 |
| 47 | #define KMAP_END 0xffffffff |
| 48 | |
| 49 | #endif /* _M68KNOMMU_PGTABLE_H */ |
| 50 |
Warning: This file is not a C or C++ file. It does not have highlighting.