Differential D2535 Diff 20392 sys/mips/include/pmap.h

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sys/mips/include/pmap.h

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	* $FreeBSD$			* $FreeBSD$
	*/			*/

	#ifndef _MACHINE_PMAP_H_			#ifndef _MACHINE_PMAP_H_
	#define _MACHINE_PMAP_H_			#define _MACHINE_PMAP_H_

	#include <machine/vmparam.h>			#include <machine/vmparam.h>
	#include <machine/pte.h>			#include <machine/pte.h>
				#include <sys/types.h>

	#if defined(__mips_n32) \|\| defined(__mips_n64) /* PHYSADDR_64BIT */			#if defined(__mips_n32) \|\| defined(__mips_n64) /* PHYSADDR_64BIT */
	#define NKPT 256 /* mem > 4G, vm_page_startup needs more KPTs */			#define NKPT 256 /* mem > 4G, vm_page_startup needs more KPTs */
	#else			#else
	#define NKPT 120 /* actual number of kernel page tables */			#define NKPT 120 /* actual number of kernel page tables */
	#endif			#endif

	#ifndef LOCORE			#ifndef LOCORE

	#include <sys/queue.h>			#include <sys/queue.h>
	#include <sys/_cpuset.h>			#include <sys/_cpuset.h>
	#include <sys/_lock.h>			#include <sys/_lock.h>
	#include <sys/_mutex.h>			#include <sys/_mutex.h>

				#ifdef MIPS64_NEW_PMAP
				#include <vm/_vm_radix.h>
				#endif /* MIPS64_NEW_PMAP */

	/*			/*
	* Pmap stuff			* Pmap stuff
	*/			*/
	struct pv_entry;			struct pv_entry;
	struct pv_chunk;			struct pv_chunk;

	struct md_page {			struct md_page {
	int pv_flags;
	TAILQ_HEAD(, pv_entry) pv_list;			TAILQ_HEAD(, pv_entry) pv_list;
				vm_memattr_t pv_memattr;
				#ifdef MIPS64_NEW_PMAP
				int pv_gen;
				#else /* ! MIPS64_NEW_PMAP */
				int pv_flags;
				#endif /* ! MIPS64_NEW_PMAP */
	};			};

	#define PV_TABLE_REF 0x02 /* referenced */			#define PV_TABLE_REF 0x02 /* referenced */
	#define PV_MEMATTR_UNCACHEABLE 0x04			#define PV_MEMATTR_UNCACHEABLE 0x04

	#define ASID_BITS 8			#define ASID_BITS 8
	#define ASIDGEN_BITS (32 - ASID_BITS)			#define ASIDGEN_BITS (32 - ASID_BITS)
	#define ASIDGEN_MASK ((1 << ASIDGEN_BITS) - 1)			#define ASIDGEN_MASK ((1 << ASIDGEN_BITS) - 1)

	struct pmap {			struct pmap {
				struct mtx pm_mtx;
	pd_entry_t pm_segtab; / KVA of segment table */			pd_entry_t pm_segtab; / KVA of segment table */
	TAILQ_HEAD(, pv_chunk) pm_pvchunk; /* list of mappings in pmap */			TAILQ_HEAD(, pv_chunk) pm_pvchunk; /* list of mappings in pmap */
	cpuset_t pm_active; /* active on cpus */			cpuset_t pm_active; /* active on cpus */
	struct {			struct {
	u_int32_t asid:ASID_BITS; /* TLB address space tag */			u_int32_t asid:ASID_BITS; /* TLB address space tag */
	u_int32_t gen:ASIDGEN_BITS; /* its generation number */			u_int32_t gen:ASIDGEN_BITS; /* its generation number */
	} pm_asid[MAXSMPCPU];			} pm_asid[MAXSMPCPU];
	struct pmap_statistics pm_stats; /* pmap statistics */			struct pmap_statistics pm_stats; /* pmap statistics */
	struct mtx pm_mtx;			#ifdef MIPS64_NEW_PMAP
				struct vm_radix pm_root; /* spare page table pages */
				#endif /* MIPS64_NEW_PMAP */
	};			};

	typedef struct pmap *pmap_t;			typedef struct pmap *pmap_t;

	#ifdef _KERNEL			#ifdef _KERNEL

	pt_entry_t *pmap_pte(pmap_t, vm_offset_t);			pt_entry_t *pmap_pte(pmap_t, vm_offset_t);
	vm_paddr_t pmap_kextract(vm_offset_t va);			vm_paddr_t pmap_kextract(vm_offset_t va);
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	#define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx)			#define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx)

	/*			/*
	* For each vm_page_t, there is a list of all currently valid virtual			* For each vm_page_t, there is a list of all currently valid virtual
	* mappings of that page. An entry is a pv_entry_t, the list is pv_table.			* mappings of that page. An entry is a pv_entry_t, the list is pv_table.
	*/			*/
	typedef struct pv_entry {			typedef struct pv_entry {
	vm_offset_t pv_va; /* virtual address for mapping */			vm_offset_t pv_va; /* virtual address for mapping */
	TAILQ_ENTRY(pv_entry) pv_list;			TAILQ_ENTRY(pv_entry) pv_next;
	} *pv_entry_t;			} *pv_entry_t;

	/*			/*
	* pv_entries are allocated in chunks per-process. This avoids the			* pv_entries are allocated in chunks per-process. This avoids the
	* need to track per-pmap assignments.			* need to track per-pmap assignments.
	*/			*/
	#ifdef __mips_n64			#ifdef __mips_n64
	#define _NPCM 3			#define _NPCM 3
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	extern vm_paddr_t physmem_desc[PHYS_AVAIL_ENTRIES + 2];			extern vm_paddr_t physmem_desc[PHYS_AVAIL_ENTRIES + 2];

	extern vm_offset_t virtual_avail;			extern vm_offset_t virtual_avail;
	extern vm_offset_t virtual_end;			extern vm_offset_t virtual_end;

	extern vm_paddr_t dump_avail[PHYS_AVAIL_ENTRIES + 2];			extern vm_paddr_t dump_avail[PHYS_AVAIL_ENTRIES + 2];

	#define pmap_page_get_memattr(m) VM_MEMATTR_DEFAULT			#define pmap_page_get_memattr(m) VM_MEMATTR_DEFAULT
	#define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list))
	#define pmap_page_is_write_mapped(m) (((m)->aflags & PGA_WRITEABLE) != 0)			#define pmap_page_is_write_mapped(m) (((m)->aflags & PGA_WRITEABLE) != 0)

	void pmap_bootstrap(void);			void pmap_bootstrap(void);
	void *pmap_mapdev(vm_paddr_t, vm_size_t);			void *pmap_mapdev(vm_paddr_t, vm_size_t);
				#ifdef MIPS64_NEW_PMAP
				jmallettUnsubmitted Not Done Inline Actions Are these ifdefs correct? I am having a hard time making sense of what changed here and why. jmallett: Are these ifdefs correct? I am having a hard time making sense of what changed here and why.
				#define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list))
				#else
				boolean_t pmap_page_is_mapped(vm_page_t m);
				#endif
	void pmap_unmapdev(vm_offset_t, vm_size_t);			void pmap_unmapdev(vm_offset_t, vm_size_t);
	vm_offset_t pmap_steal_memory(vm_size_t size);			vm_offset_t pmap_steal_memory(vm_size_t size);
	void pmap_kenter(vm_offset_t va, vm_paddr_t pa);			void pmap_kenter(vm_offset_t va, vm_paddr_t pa);
	void pmap_kenter_attr(vm_offset_t va, vm_paddr_t pa, int attr);			void pmap_kenter_attr(vm_offset_t va, vm_paddr_t pa, int attr);
	void pmap_kremove(vm_offset_t va);			void pmap_kremove(vm_offset_t va);
	void *pmap_kenter_temporary(vm_paddr_t pa, int i);			void *pmap_kenter_temporary(vm_paddr_t pa, int i);
	void pmap_kenter_temporary_free(vm_paddr_t pa);			void pmap_kenter_temporary_free(vm_paddr_t pa);
	void pmap_flush_pvcache(vm_page_t m);			void pmap_flush_pvcache(vm_page_t m);
	int pmap_emulate_modified(pmap_t pmap, vm_offset_t va);			int pmap_emulate_modified(pmap_t pmap, vm_offset_t va);
				int pmap_emulate_referenced(pmap_t pmap, vm_offset_t va);
	void pmap_page_set_memattr(vm_page_t, vm_memattr_t);			void pmap_page_set_memattr(vm_page_t, vm_memattr_t);

	#endif /* _KERNEL */			#endif /* _KERNEL */

	#endif /* !LOCORE */			#endif /* !LOCORE */

	#endif /* !_MACHINE_PMAP_H_ */			#endif /* !_MACHINE_PMAP_H_ */