82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
#ifndef KERNEL_PMAP_H_
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#define KERNEL_PMAP_H_
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/* all the functions declared in this file are defined in arch/xyz/pmap.c */
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#include <kernel/machine/pmap.h>
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#include <kernel/vm.h>
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#include <mango/status.h>
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#include <stddef.h>
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#define PMAP_INVALID ML_PMAP_INVALID
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#define PFN(x) ((x) >> VM_PAGE_SHIFT)
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef ml_pmap_t pmap_t;
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typedef ml_pfn_t pfn_t;
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enum pmap_fault_flags {
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/* if set, the faulting page is present, and the fault is
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* protection-related.
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* if clear, the faulting page is missing, and the
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* fault is due to the missing page.
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*/
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PMAP_FAULT_PRESENT = 0x01u,
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/* if set, the faulting page was accessed from user mode.
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* if clear, the faulting page was accessed from kernel mode.
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*/
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PMAP_FAULT_USER = 0x02u,
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/* if set, the fault was caused by a write operation.
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* if clear, the faulting page was caused by a read operation.
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*/
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PMAP_FAULT_WRITE = 0x04u,
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/* if set, the fault was caused while fetching an instruction from the
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* faulting page.
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*/
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PMAP_FAULT_IFETCH = 0x08u,
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/* if set, the fault was caused by misconfigured page tables */
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PMAP_FAULT_BADCFG = 0x10u,
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};
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enum pmap_flags {
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PMAP_NORMAL = 0x00u,
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PMAP_HUGEPAGE = 0x01u,
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};
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extern void pmap_bootstrap(void);
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extern pmap_t get_kernel_pmap(void);
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extern pmap_t pmap_create(void);
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extern void pmap_destroy(pmap_t pmap);
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extern void pmap_switch(pmap_t pmap);
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extern kern_status_t pmap_handle_fault(
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virt_addr_t fault_addr,
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enum pmap_fault_flags flags);
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extern kern_status_t pmap_add(
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pmap_t pmap,
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virt_addr_t p,
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pfn_t pfn,
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vm_prot_t prot,
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enum pmap_flags flags);
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extern kern_status_t pmap_add_block(
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pmap_t pmap,
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virt_addr_t p,
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pfn_t pfn,
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size_t len,
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vm_prot_t prot,
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enum pmap_flags flags);
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extern kern_status_t pmap_remove(pmap_t pmap, virt_addr_t p);
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extern kern_status_t pmap_remove_range(pmap_t pmap, virt_addr_t p, size_t len);
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#ifdef __cplusplus
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}
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#endif
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#endif
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