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author | Jon Santmyer <jon@jonsantmyer.com> | 2024-05-22 13:00:41 -0400 |
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committer | Jon Santmyer <jon@jonsantmyer.com> | 2024-05-22 13:00:41 -0400 |
commit | ace65b453151845bc361f21f3e5b651c35f9f126 (patch) | |
tree | 262ebd29b0ca1d8584f0b6f1efa7a00d9f4f3e43 /include/memory.h | |
parent | f004c1ade8d617a82cea2fe249434cccb47a2358 (diff) | |
download | jove-kernel-ace65b453151845bc361f21f3e5b651c35f9f126.tar.gz jove-kernel-ace65b453151845bc361f21f3e5b651c35f9f126.tar.bz2 jove-kernel-ace65b453151845bc361f21f3e5b651c35f9f126.zip |
Diffstat (limited to 'include/memory.h')
-rw-r--r-- | include/memory.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/include/memory.h b/include/memory.h new file mode 100644 index 0000000..35198e6 --- /dev/null +++ b/include/memory.h @@ -0,0 +1,49 @@ +#ifndef _JOVE_MEMORY_H +#define _JOVE_MEMORY_H 1 + +#define KiB 1024ULL +#define MiB (KiB * KiB) +#define GiB (MiB * KiB) +#define TiB (GiB * KiB) + +#include <stdbool.h> +#include <stddef.h> +#include "arch/page.h" + +typedef uintptr_t physptr_t; + +extern const uintptr_t USERLAND_MEMORY_BASE; +extern const uintptr_t USERLAND_MEMORY_LIMIT; +extern const uintptr_t PHYSMAP_MEMORY_BASE; +extern const uintptr_t PHYSMAP_MEMORY_LIMIT; +extern const uintptr_t KERNEL_MEMORY_BASE; +extern const uintptr_t KERNEL_MEMORY_LIMIT; + +page_mapping_t vm_pd_mapping_get(page_directory_t *pd, uintptr_t addr); +void vm_pd_mapping_set(page_directory_t *pd, page_mapping_t mapping, uintptr_t addr); +void vm_pd_ensure(page_directory_t *pd, uintptr_t from, uintptr_t to, page_flags_t flg); + +page_mapping_t vm_mapping_get(uintptr_t addr); +void vm_mapping_set(page_mapping_t mapping, uintptr_t virt); +void vm_ensure(uintptr_t from, uintptr_t to, page_flags_t flg); + +physptr_t vm_tophys(uintptr_t virt); +physptr_t vm_tophys_koff(uintptr_t virt); + +uintptr_t pm_tovirt(physptr_t phys); + +physptr_t pm_alloc(size_t pages); +void pm_reserve(physptr_t start, physptr_t end); +void pm_release(physptr_t start, physptr_t end); + +void mm_setup_early(void); +void vm_setup_early(void); + +void mm_setup(void); +void vm_setup(void); + +void* kmalloc(size_t width); +void *krealloc(void *ptr, size_t width); +void kfree(void *ptr); + +#endif |