573c4336a3
when called with interrupts turned off, get_memory_map() will now call the new vm_translation_map_ops::query_interrupt() call. Under PPC, this is trivial (at least right now), but on x86 we need to make sure we have access to the page table entry, ie. we need to create an area that points to its own page table entry, so that we can map in the page table entry containing the address we're looking for. It's not really nice, feel free to come up with a cleaner solution :-) git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17280 a95241bf-73f2-0310-859d-f6bbb57e9c96
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/*
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* Copyright 2002-2006, Haiku. All rights reserved.
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef KERNEL_VM_TRANSLATION_MAP_H
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#define KERNEL_VM_TRANSLATION_MAP_H
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#include <kernel.h>
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#include <lock.h>
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struct kernel_args;
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typedef struct vm_translation_map {
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struct vm_translation_map *next;
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struct vm_translation_map_ops *ops;
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recursive_lock lock;
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int32 map_count;
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struct vm_translation_map_arch_info *arch_data;
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} vm_translation_map;
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// table of operations the vm may want to do to this mapping
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typedef struct vm_translation_map_ops {
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void (*destroy)(vm_translation_map *map);
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status_t (*lock)(vm_translation_map *map);
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status_t (*unlock)(vm_translation_map *map);
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status_t (*map)(vm_translation_map *map, addr_t va, addr_t pa, uint32 attributes);
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status_t (*unmap)(vm_translation_map *map, addr_t start, addr_t end);
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status_t (*query)(vm_translation_map *map, addr_t va, addr_t *_outPhysical, uint32 *_outFlags);
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status_t (*query_interrupt)(vm_translation_map *map, addr_t va, addr_t *_outPhysical);
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addr_t (*get_mapped_size)(vm_translation_map*);
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status_t (*protect)(vm_translation_map *map, addr_t base, addr_t top, uint32 attributes);
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status_t (*clear_flags)(vm_translation_map *map, addr_t va, uint32 flags);
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void (*flush)(vm_translation_map *map);
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status_t (*get_physical_page)(addr_t physicalAddress, addr_t *_virtualAddress, uint32 flags);
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status_t (*put_physical_page)(addr_t virtualAddress);
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} vm_translation_map_ops;
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#include <arch/vm_translation_map.h>
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#endif /* KERNEL_VM_TRANSLATION_MAP_H */
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