d4586dd328
We must also check for large mappings. pmap_page_is_mapped() is mostly used in assertions, so the problem was not very noticeable. Reviewed by: alc MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D21824
183 lines
5.6 KiB
C
183 lines
5.6 KiB
C
/*-
|
|
* Copyright (c) 1991 Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* the Systems Programming Group of the University of Utah Computer
|
|
* Science Department and William Jolitz of UUNET Technologies Inc.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_PMAP_H_
|
|
#define _MACHINE_PMAP_H_
|
|
|
|
#include <machine/pte.h>
|
|
|
|
#ifndef LOCORE
|
|
|
|
#include <sys/queue.h>
|
|
#include <sys/_lock.h>
|
|
#include <sys/_mutex.h>
|
|
|
|
#include <vm/_vm_radix.h>
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#define vtophys(va) pmap_kextract((vm_offset_t)(va))
|
|
|
|
#endif
|
|
|
|
#define pmap_page_get_memattr(m) ((m)->md.pv_memattr)
|
|
#define pmap_page_is_write_mapped(m) (((m)->aflags & PGA_WRITEABLE) != 0)
|
|
void pmap_page_set_memattr(vm_page_t m, vm_memattr_t ma);
|
|
|
|
/*
|
|
* Pmap stuff
|
|
*/
|
|
|
|
struct md_page {
|
|
TAILQ_HEAD(,pv_entry) pv_list;
|
|
int pv_gen;
|
|
vm_memattr_t pv_memattr;
|
|
};
|
|
|
|
/*
|
|
* This structure is used to hold a virtual<->physical address
|
|
* association and is used mostly by bootstrap code
|
|
*/
|
|
struct pv_addr {
|
|
SLIST_ENTRY(pv_addr) pv_list;
|
|
vm_offset_t pv_va;
|
|
vm_paddr_t pv_pa;
|
|
};
|
|
|
|
|
|
struct pmap {
|
|
struct mtx pm_mtx;
|
|
struct pmap_statistics pm_stats; /* pmap statictics */
|
|
pd_entry_t *pm_l0;
|
|
TAILQ_HEAD(,pv_chunk) pm_pvchunk; /* list of mappings in pmap */
|
|
struct vm_radix pm_root; /* spare page table pages */
|
|
};
|
|
typedef struct pmap *pmap_t;
|
|
|
|
typedef struct pv_entry {
|
|
vm_offset_t pv_va; /* virtual address for mapping */
|
|
TAILQ_ENTRY(pv_entry) pv_next;
|
|
} *pv_entry_t;
|
|
|
|
/*
|
|
* pv_entries are allocated in chunks per-process. This avoids the
|
|
* need to track per-pmap assignments.
|
|
*/
|
|
#define _NPCM 3
|
|
#define _NPCPV 168
|
|
#define PV_CHUNK_HEADER \
|
|
pmap_t pc_pmap; \
|
|
TAILQ_ENTRY(pv_chunk) pc_list; \
|
|
uint64_t pc_map[_NPCM]; /* bitmap; 1 = free */ \
|
|
TAILQ_ENTRY(pv_chunk) pc_lru;
|
|
|
|
struct pv_chunk_header {
|
|
PV_CHUNK_HEADER
|
|
};
|
|
|
|
struct pv_chunk {
|
|
PV_CHUNK_HEADER
|
|
struct pv_entry pc_pventry[_NPCPV];
|
|
};
|
|
|
|
struct thread;
|
|
|
|
#ifdef _KERNEL
|
|
extern struct pmap kernel_pmap_store;
|
|
#define kernel_pmap (&kernel_pmap_store)
|
|
#define pmap_kernel() kernel_pmap
|
|
|
|
#define PMAP_ASSERT_LOCKED(pmap) \
|
|
mtx_assert(&(pmap)->pm_mtx, MA_OWNED)
|
|
#define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx)
|
|
#define PMAP_LOCK_ASSERT(pmap, type) \
|
|
mtx_assert(&(pmap)->pm_mtx, (type))
|
|
#define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx)
|
|
#define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, "pmap", \
|
|
NULL, MTX_DEF | MTX_DUPOK)
|
|
#define PMAP_OWNED(pmap) mtx_owned(&(pmap)->pm_mtx)
|
|
#define PMAP_MTX(pmap) (&(pmap)->pm_mtx)
|
|
#define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx)
|
|
#define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx)
|
|
|
|
extern vm_offset_t virtual_avail;
|
|
extern vm_offset_t virtual_end;
|
|
|
|
/*
|
|
* Macros to test if a mapping is mappable with an L1 Section mapping
|
|
* or an L2 Large Page mapping.
|
|
*/
|
|
#define L1_MAPPABLE_P(va, pa, size) \
|
|
((((va) | (pa)) & L1_OFFSET) == 0 && (size) >= L1_SIZE)
|
|
|
|
void pmap_bootstrap(vm_offset_t, vm_offset_t, vm_paddr_t, vm_size_t);
|
|
int pmap_change_attr(vm_offset_t va, vm_size_t size, int mode);
|
|
void pmap_kenter(vm_offset_t sva, vm_size_t size, vm_paddr_t pa, int mode);
|
|
void pmap_kenter_device(vm_offset_t, vm_size_t, vm_paddr_t);
|
|
vm_paddr_t pmap_kextract(vm_offset_t va);
|
|
void pmap_kremove(vm_offset_t);
|
|
void pmap_kremove_device(vm_offset_t, vm_size_t);
|
|
void *pmap_mapdev_attr(vm_offset_t pa, vm_size_t size, vm_memattr_t ma);
|
|
bool pmap_page_is_mapped(vm_page_t m);
|
|
bool pmap_ps_enabled(pmap_t pmap);
|
|
|
|
void *pmap_mapdev(vm_offset_t, vm_size_t);
|
|
void *pmap_mapbios(vm_paddr_t, vm_size_t);
|
|
void pmap_unmapdev(vm_offset_t, vm_size_t);
|
|
void pmap_unmapbios(vm_offset_t, vm_size_t);
|
|
|
|
boolean_t pmap_map_io_transient(vm_page_t *, vm_offset_t *, int, boolean_t);
|
|
void pmap_unmap_io_transient(vm_page_t *, vm_offset_t *, int, boolean_t);
|
|
|
|
bool pmap_get_tables(pmap_t, vm_offset_t, pd_entry_t **, pd_entry_t **,
|
|
pd_entry_t **, pt_entry_t **);
|
|
|
|
int pmap_fault(pmap_t, uint64_t, uint64_t);
|
|
|
|
struct pcb *pmap_switch(struct thread *, struct thread *);
|
|
|
|
static inline int
|
|
pmap_vmspace_copy(pmap_t dst_pmap __unused, pmap_t src_pmap __unused)
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !LOCORE */
|
|
|
|
#endif /* !_MACHINE_PMAP_H_ */
|