154 lines
6.2 KiB
C
154 lines
6.2 KiB
C
/*
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* Copyright 2002-2009, Axel Dörfler, axeld@pinc-software.de.
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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_H
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#define _KERNEL_VM_H
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#include <OS.h>
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#include <arch/vm.h>
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#include <vm_defs.h>
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struct kernel_args;
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struct team;
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struct system_memory_info;
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struct vm_page;
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struct VMCache;
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struct vm_area;
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struct vm_address_space;
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struct vnode;
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// area creation flags
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#define CREATE_AREA_DONT_WAIT 0x01
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#define CREATE_AREA_UNMAP_ADDRESS_RANGE 0x02
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#define CREATE_AREA_DONT_CLEAR 0x04
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#ifdef __cplusplus
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extern "C" {
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#endif
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// startup only
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status_t vm_init(struct kernel_args *args);
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status_t vm_init_post_sem(struct kernel_args *args);
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status_t vm_init_post_thread(struct kernel_args *args);
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status_t vm_init_post_modules(struct kernel_args *args);
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void vm_free_kernel_args(struct kernel_args *args);
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void vm_free_unused_boot_loader_range(addr_t start, addr_t end);
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addr_t vm_allocate_early(struct kernel_args *args, size_t virtualSize,
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size_t physicalSize, uint32 attributes);
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void slab_init(struct kernel_args *args, addr_t initialBase,
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size_t initialSize);
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void slab_init_post_sem();
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void slab_init_post_thread();
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// to protect code regions with interrupts turned on
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void permit_page_faults(void);
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void forbid_page_faults(void);
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// private kernel only extension (should be moved somewhere else):
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area_id create_area_etc(team_id team, const char *name, void **address,
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uint32 addressSpec, uint32 size, uint32 lock, uint32 protection,
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addr_t physicalAddress, uint32 flags);
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area_id transfer_area(area_id id, void** _address, uint32 addressSpec,
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team_id target, bool kernel);
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status_t vm_unreserve_address_range(team_id team, void *address, addr_t size);
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status_t vm_reserve_address_range(team_id team, void **_address,
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uint32 addressSpec, addr_t size, uint32 flags);
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area_id vm_create_anonymous_area(team_id team, const char *name, void **address,
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uint32 addressSpec, addr_t size, uint32 wiring, uint32 protection,
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addr_t physicalAddress, uint32 flags, bool kernel);
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area_id vm_map_physical_memory(team_id team, const char *name, void **address,
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uint32 addressSpec, addr_t size, uint32 protection, addr_t phys_addr);
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area_id vm_map_file(team_id aid, const char *name, void **address,
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uint32 addressSpec, addr_t size, uint32 protection, uint32 mapping,
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bool unmapAddressRange, int fd, off_t offset);
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struct VMCache *vm_area_get_locked_cache(struct vm_area *area);
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void vm_area_put_locked_cache(struct VMCache *cache);
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area_id vm_create_null_area(team_id team, const char *name, void **address,
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uint32 addressSpec, addr_t size);
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area_id vm_copy_area(team_id team, const char *name, void **_address,
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uint32 addressSpec, uint32 protection, area_id sourceID);
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area_id vm_clone_area(team_id team, const char *name, void **address,
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uint32 addressSpec, uint32 protection, uint32 mapping,
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area_id sourceArea, bool kernel);
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status_t vm_delete_area(team_id teamID, area_id areaID, bool kernel);
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status_t vm_create_vnode_cache(struct vnode *vnode, struct VMCache **_cache);
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struct vm_area *vm_area_lookup(struct vm_address_space *addressSpace,
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addr_t address);
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status_t vm_set_area_memory_type(area_id id, addr_t physicalBase, uint32 type);
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status_t vm_get_page_mapping(team_id team, addr_t vaddr, addr_t *paddr);
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bool vm_test_map_modification(struct vm_page *page);
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int32 vm_test_map_activation(struct vm_page *page, bool *_modified);
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void vm_clear_map_flags(struct vm_page *page, uint32 flags);
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void vm_remove_all_page_mappings(struct vm_page *page, uint32 *_flags);
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bool vm_unmap_page(struct vm_area* area, addr_t virtualAddress,
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bool preserveModified);
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status_t vm_unmap_pages(struct vm_area *area, addr_t base, size_t length,
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bool preserveModified);
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status_t vm_map_page(struct vm_area *area, struct vm_page *page, addr_t address,
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uint32 protection);
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status_t vm_get_physical_page(addr_t paddr, addr_t* vaddr, void** _handle);
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status_t vm_put_physical_page(addr_t vaddr, void* handle);
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status_t vm_get_physical_page_current_cpu(addr_t paddr, addr_t* vaddr,
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void** _handle);
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status_t vm_put_physical_page_current_cpu(addr_t vaddr, void* handle);
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status_t vm_get_physical_page_debug(addr_t paddr, addr_t* vaddr,
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void** _handle);
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status_t vm_put_physical_page_debug(addr_t vaddr, void* handle);
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void vm_get_info(struct system_memory_info *info);
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uint32 vm_num_page_faults(void);
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off_t vm_available_memory(void);
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off_t vm_available_not_needed_memory(void);
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status_t vm_memset_physical(addr_t address, int value, size_t length);
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status_t vm_memcpy_from_physical(void* to, addr_t from, size_t length,
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bool user);
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status_t vm_memcpy_to_physical(addr_t to, const void* from, size_t length,
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bool user);
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void vm_memcpy_physical_page(addr_t to, addr_t from);
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// user syscalls
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area_id _user_create_area(const char *name, void **address, uint32 addressSpec,
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size_t size, uint32 lock, uint32 protection);
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status_t _user_delete_area(area_id area);
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area_id _user_map_file(const char *uname, void **uaddress, int addressSpec,
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size_t size, int protection, int mapping, bool unmapAddressRange,
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int fd, off_t offset);
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status_t _user_unmap_memory(void *address, size_t size);
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status_t _user_set_memory_protection(void* address, size_t size,
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int protection);
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status_t _user_sync_memory(void *address, size_t size, int flags);
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status_t _user_memory_advice(void* address, size_t size, int advice);
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area_id _user_area_for(void *address);
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area_id _user_find_area(const char *name);
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status_t _user_get_area_info(area_id area, area_info *info);
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status_t _user_get_next_area_info(team_id team, int32 *cookie, area_info *info);
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status_t _user_resize_area(area_id area, size_t newSize);
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area_id _user_transfer_area(area_id area, void **_address, uint32 addressSpec,
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team_id target);
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status_t _user_set_area_protection(area_id area, uint32 newProtection);
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area_id _user_clone_area(const char *name, void **_address, uint32 addressSpec,
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uint32 protection, area_id sourceArea);
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status_t _user_reserve_address_range(addr_t* userAddress, uint32 addressSpec,
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addr_t size);
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status_t _user_unreserve_address_range(addr_t address, addr_t size);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _KERNEL_VM_H */
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