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sandbox: vm: add page attribute getters

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max 🍓
2023-01-29 20:09:15 +00:00
parent 66afb5ca28
commit 8fb71ccb77
2 changed files with 26 additions and 5 deletions
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15
sandbox/vm/include/socks/vm.h
View File

@@ -17,10 +17,11 @@ typedef struct vm_object {
} vm_object_t; } vm_object_t;
typedef enum vm_zone_id { typedef enum vm_zone_id {
VM_ZONE_DMA = 1u, VM_ZONE_DMA = 0u,
VM_ZONE_NORMAL = 2u, VM_ZONE_NORMAL = 1u,
VM_ZONE_HIGHMEM = 3u, VM_ZONE_HIGHMEM = 2u,
VM_ZONE_COUNT = VM_ZONE_HIGHMEM, VM_ZONE_MIN = VM_ZONE_DMA,
VM_ZONE_MAX = VM_ZONE_HIGHMEM,
} vm_zone_id_t; } vm_zone_id_t;
typedef enum vm_page_order { typedef enum vm_page_order {
@@ -67,7 +68,7 @@ typedef struct vm_zone {
} vm_zone_t; } vm_zone_t;
typedef struct vm_pg_data { typedef struct vm_pg_data {
vm_zone_t pg_zones[VM_ZONE_COUNT]; vm_zone_t pg_zones[VM_ZONE_MAX + 1];
} vm_pg_data_t; } vm_pg_data_t;
typedef struct vm_region { typedef struct vm_region {
@@ -100,6 +101,10 @@ extern kern_status_t vm_bootstrap(const vm_zone_descriptor_t *zones, size_t nr_z
extern void vm_page_init_array(); extern void vm_page_init_array();
extern vm_page_t *vm_page_get(phys_addr_t addr); extern vm_page_t *vm_page_get(phys_addr_t addr);
extern phys_addr_t vm_page_get_paddr(vm_page_t *pg);
extern vm_zone_t *vm_page_get_zone(vm_page_t *pg);
extern void *vm_page_get_vaddr(vm_page_t *pg);
extern size_t vm_page_get_pfn(vm_page_t *pg);
extern size_t vm_page_order_to_bytes(vm_page_order_t order); extern size_t vm_page_order_to_bytes(vm_page_order_t order);
extern size_t vm_page_order_to_pages(vm_page_order_t order); extern size_t vm_page_order_to_pages(vm_page_order_t order);
extern vm_alignment_t vm_page_order_to_alignment(vm_page_order_t order); extern vm_alignment_t vm_page_order_to_alignment(vm_page_order_t order);

16
sandbox/vm/vm_page.c
View File

@@ -77,6 +77,22 @@ vm_page_t *vm_page_get(phys_addr_t addr)
return pfn < page_array_count ? &page_array[pfn] : NULL; return pfn < page_array_count ? &page_array[pfn] : NULL;
} }
phys_addr_t vm_page_get_paddr(vm_page_t *pg)
{
return vm_page_get_pfn(pg) * VM_PAGE_SIZE;
}
void *vm_page_get_vaddr(vm_page_t *pg)
{
/* TODO */
return NULL;
}
size_t vm_page_get_pfn(vm_page_t *pg)
{
return ((uintptr_t)pg - (uintptr_t)page_array) / sizeof *pg;
}
size_t vm_page_order_to_bytes(vm_page_order_t order) size_t vm_page_order_to_bytes(vm_page_order_t order)
{ {
if (order < 0 || order > VM_PAGE_MAX_ORDER) { if (order < 0 || order > VM_PAGE_MAX_ORDER) {