72 lines
3.1 KiB
C
72 lines
3.1 KiB
C
// SPDX-License-Identifier: MPL-2.0
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#ifndef SH_LIB_PEZ_H
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#define SH_LIB_PEZ_H
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#include "std/type.h"
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#include "std/status.h"
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#include "memory/slabs/slab_reg_phys.h"
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#include "memory/slabs/slab_reg_virt.h"
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#include "memory/pez/radix.h"
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#define SH_PEZ_REGION_OBJECT_INDEX_SIZE_BYTES 3
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// Physical region object
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#pragma pack(1)
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typedef struct {
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sh_uint32 start_page_index;
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sh_uint32 region_size_pages;
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sh_uint8 next_region_index[3];
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sh_uint8 flags;
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} sh_pez_REGION_PHYSICAL_OBJECT;
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#pragma pack()
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// Virtual region object
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#pragma pack(1)
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typedef struct {
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sh_uint32 start_page_index;
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sh_uint32 region_size_pages;
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sh_uint32 next_region_index;
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} sh_pez_REGION_VIRTUAL_OBJECT;
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#pragma pack()
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// Physical plane structure
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typedef struct {
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sh_uint32 free_pages;
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sh_uint32 used_pages;
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sh_radix_TREE region_radix_tree;
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sh_radix_TREE boundary_radix_tree;
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sh_slab_reg_phys_SLAB_ALLOCATOR *slab_reg_phys;
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struct sh_slab_radix_node_SLAB_ALLOCATOR *slab_radix_node;
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sh_page_PAGE_TABLE_POOL *kernel_ptp;
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sh_uint8 *physical_bitmap;
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sh_uint64 physical_page_count;
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} sh_pez_PHYSICAL_PLANE;
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// Virtual plane structure
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typedef struct {
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sh_uint32 free_pages;
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sh_uint32 used_pages;
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sh_radix_TREE region_radix_tree;
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sh_radix_TREE boundary_radix_tree;
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sh_slab_reg_virt_SLAB_ALLOCATOR *slab_reg_virt;
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struct sh_slab_radix_node_SLAB_ALLOCATOR *slab_radix_node;
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sh_page_PAGE_TABLE_POOL *kernel_ptp;
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sh_page_PAGE_TABLE_POOL *reference_ptp;
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sh_page_VIRTUAL_ADDRESS plane_offset;
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} sh_pez_VIRTUAL_PLANE;
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// Set Pez state to true
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void sh_pez_set_available();
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// Return current state of Pez
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sh_bool sh_pez_is_available();
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// Return reference Pez physical plane
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sh_pez_PHYSICAL_PLANE* sh_pez_get_reference_phys_plane();
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// Initialize a physical plane
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SH_STATUS sh_pez_init_physical_plane(sh_uint8 *physical_bitmap,sh_uint64 physical_page_count,sh_slab_reg_phys_SLAB_ALLOCATOR *slab_reg_phys,struct sh_slab_radix_node_SLAB_ALLOCATOR *slab_radix_node,sh_page_PAGE_TABLE_POOL *kernel_ptp,sh_pez_PHYSICAL_PLANE *phys_plane);
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// Allocate physical pages from the physical plane
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SH_STATUS sh_pez_alloc_physical_pages(sh_pez_PHYSICAL_PLANE *phys_plane,sh_uint32 pages_count,sh_page_PHYSICAL_ADDRESS *address);
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// Free physical pages from the physical plane
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SH_STATUS sh_pez_free_physical_pages(sh_pez_PHYSICAL_PLANE *phys_plane,sh_page_PHYSICAL_ADDRESS *address,sh_uint32 pages_count);
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// Debug Pez Physical
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SH_STATUS sh_pez_debug_physical(sh_pez_PHYSICAL_PLANE *phys_plane);
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// Initialize a virtual plane
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SH_STATUS sh_pez_init_virtual_plane(sh_page_VIRTUAL_ADDRESS plane_offset,sh_slab_reg_virt_SLAB_ALLOCATOR *slab_reg_virt,struct sh_slab_radix_node_SLAB_ALLOCATOR *slab_radix_node,sh_page_PAGE_TABLE_POOL *kernel_ptp,sh_page_PAGE_TABLE_POOL *reference_ptp,sh_pez_VIRTUAL_PLANE *virt_plane);
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// Allocate virtual space from the virtual plane
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SH_STATUS sh_pez_alloc_virtual_pages(sh_pez_VIRTUAL_PLANE *virt_plane,sh_uint32 pages_count,sh_page_VIRTUAL_ADDRESS *address);
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// Free virtual space from the virtual plane
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SH_STATUS sh_pez_free_virtual_pages(sh_pez_VIRTUAL_PLANE *virt_plane,sh_page_VIRTUAL_ADDRESS *address,sh_uint32 pages_count);
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#endif
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