mm.hpp File Reference

#include "mos/io/io.hpp"
#include "mos/mm/mmstat.hpp"
#include "mos/mm/physical/pmm.hpp"
#include "mos/platform/platform.hpp"
#include "mos/syslog/syslog.hpp"
#include <mos/allocator.hpp>
#include <mos/lib/structures/list.hpp>
#include <mos/lib/sync/spinlock.hpp>
#include <mos/mm/mm_types.h>

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Classes
struct	pagefault_t
struct	vmap_t

Macros
#define	pfn_va(pfn)
#define	va_pfn(va)
#define	va_phyframe(va)
#define	phyframe_va(frame)
#define	pa_va(pa)
#define	mm_free_page(frame)
#define	mm_free_pages(frame, npages)

Typedefs
typedef vmfault_result_t(*	vmfault_handler_t) (vmap_t *vmap, ptr_t fault_addr, pagefault_t *info)

Enumerations
enum	vmap_content_t {   VMAP_UNKNOWN = 0 , VMAP_STACK , VMAP_FILE , VMAP_MMAP ,   VMAP_DMA }
enum	vmap_type_t { VMAP_TYPE_PRIVATE = MMAP_PRIVATE , VMAP_TYPE_SHARED = MMAP_SHARED }
enum	vmfault_result_t {   VMFAULT_COMPLETE , VMFAULT_MAP_BACKING_PAGE_RO , VMFAULT_MAP_BACKING_PAGE , VMFAULT_COPY_BACKING_PAGE ,   VMFAULT_CANNOT_HANDLE = 0xff }

Functions
phyframe_t *	mm_get_free_page (void)
phyframe_t *	mm_get_free_page_raw (void)
phyframe_t *	mm_get_free_pages (size_t npages)
MMContext *	mm_create_context (void)
	Create a user-mode platform-dependent page table.
void	mm_destroy_context (MMContext *table)
	Destroy a user-mode platform-dependent page table.
void	mm_lock_context_pair (MMContext *ctx1, MMContext *ctx2=nullptr)
	Lock and unlock a pair of MMContext objects.
void	mm_unlock_context_pair (MMContext *ctx1, MMContext *ctx2=nullptr)
__nodiscard MMContext *	mm_switch_context (MMContext *new_ctx)
vmap_t *	vmap_create (MMContext *mmctx, ptr_t vaddr, size_t npages)
	Create a vmap object and insert it into the address space.
void	vmap_destroy (vmap_t *vmap)
	Destroy a vmap object, and unmmap the region.
vmap_t *	vmap_obtain (MMContext *mmctx, ptr_t vaddr, size_t *out_offset=nullptr)
	Get the vmap object for a virtual address.
vmap_t *	vmap_split (vmap_t *vmap, size_t split)
	Split a vmap object into two, at the specified offset.
vmap_t *	vmap_split_for_range (vmap_t *vmap, size_t rstart_pgoff, size_t rend_pgoff)
	Split a vmap to get a vmap object for a range of pages.
void	vmap_finalise_init (vmap_t *vmap, vmap_content_t content, vmap_type_t type)
	Finalize the initialization of a vmap object.
vmfault_result_t	mm_resolve_cow_fault (vmap_t *vmap, ptr_t fault_addr, pagefault_t *info)
	Helper function to resolve a copy-on-write fault.
void	mm_handle_fault (ptr_t fault_addr, pagefault_t *info)
	Handle a page fault.