dfb378345f
because the i386 pmap on which the new armv6 pmap is based had it, and in r281707 pmap_lazyfix() was removed from the i386 pmap. Discussed with: kib Submitted by: Michal Meloun (via Svatopluk Kraus)
314 lines
9.9 KiB
C
314 lines
9.9 KiB
C
/*-
|
|
* Copyright 2014 Svatopluk Kraus <onwahe@gmail.com>
|
|
* Copyright 2014 Michal Meloun <meloun@miracle.cz>
|
|
* 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.
|
|
*
|
|
* 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.
|
|
*
|
|
* The ARM version of this file was more or less based on the i386 version,
|
|
* which has the following provenance...
|
|
*
|
|
* Derived from hp300 version by Mike Hibler, this version by William
|
|
* Jolitz uses a recursive map [a pde points to the page directory] to
|
|
* map the page tables using the pagetables themselves. This is done to
|
|
* reduce the impact on kernel virtual memory for lots of sparse address
|
|
* space, and to reduce the cost of memory to each process.
|
|
*
|
|
* from: hp300: @(#)pmap.h 7.2 (Berkeley) 12/16/90
|
|
* from: @(#)pmap.h 7.4 (Berkeley) 5/12/91
|
|
* from: FreeBSD: src/sys/i386/include/pmap.h,v 1.70 2000/11/30
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_PMAP_H_
|
|
#define _MACHINE_PMAP_H_
|
|
|
|
#include <sys/queue.h>
|
|
#include <sys/_cpuset.h>
|
|
#include <sys/_lock.h>
|
|
#include <sys/_mutex.h>
|
|
|
|
typedef uint32_t pt1_entry_t; /* L1 table entry */
|
|
typedef uint32_t pt2_entry_t; /* L2 table entry */
|
|
typedef uint32_t ttb_entry_t; /* TTB entry */
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#if 0
|
|
#define PMAP_PTE_NOCACHE // Use uncached page tables
|
|
#endif
|
|
|
|
/*
|
|
* (1) During pmap bootstrap, physical pages for L2 page tables are
|
|
* allocated in advance which are used for KVA continuous mapping
|
|
* starting from KERNBASE. This makes things more simple.
|
|
* (2) During vm subsystem initialization, only vm subsystem itself can
|
|
* allocate physical memory safely. As pmap_map() is called during
|
|
* this initialization, we must be prepared for that and have some
|
|
* preallocated physical pages for L2 page tables.
|
|
*
|
|
* Note that some more pages for L2 page tables are preallocated too
|
|
* for mappings laying above VM_MAX_KERNEL_ADDRESS.
|
|
*/
|
|
#ifndef NKPT2PG
|
|
/*
|
|
* The optimal way is to define this in board configuration as
|
|
* definition here must be safe enough. It means really big.
|
|
*
|
|
* 1 GB KVA <=> 256 kernel L2 page table pages
|
|
*
|
|
* From real platforms:
|
|
* 1 GB physical memory <=> 10 pages is enough
|
|
* 2 GB physical memory <=> 21 pages is enough
|
|
*/
|
|
#define NKPT2PG 32
|
|
#endif
|
|
|
|
extern vm_paddr_t phys_avail[];
|
|
extern vm_paddr_t dump_avail[];
|
|
extern char *_tmppt; /* poor name! */
|
|
extern vm_offset_t virtual_avail;
|
|
extern vm_offset_t virtual_end;
|
|
|
|
/*
|
|
* Pmap stuff
|
|
*/
|
|
|
|
/*
|
|
* 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;
|
|
};
|
|
#endif
|
|
struct pv_entry;
|
|
struct pv_chunk;
|
|
|
|
struct md_page {
|
|
TAILQ_HEAD(,pv_entry) pv_list;
|
|
uint16_t pt2_wirecount[4];
|
|
int pat_mode;
|
|
};
|
|
|
|
struct pmap {
|
|
struct mtx pm_mtx;
|
|
pt1_entry_t *pm_pt1; /* KVA of pt1 */
|
|
pt2_entry_t *pm_pt2tab; /* KVA of pt2 pages table */
|
|
TAILQ_HEAD(,pv_chunk) pm_pvchunk; /* list of mappings in pmap */
|
|
cpuset_t pm_active; /* active on cpus */
|
|
struct pmap_statistics pm_stats; /* pmap statictics */
|
|
LIST_ENTRY(pmap) pm_list; /* List of all pmaps */
|
|
};
|
|
|
|
typedef struct pmap *pmap_t;
|
|
|
|
#ifdef _KERNEL
|
|
extern struct pmap kernel_pmap_store;
|
|
#define kernel_pmap (&kernel_pmap_store)
|
|
|
|
#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_LOCKED(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)
|
|
#endif
|
|
|
|
/*
|
|
* 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_list.
|
|
*/
|
|
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 11
|
|
#define _NPCPV 336
|
|
struct pv_chunk {
|
|
pmap_t pc_pmap;
|
|
TAILQ_ENTRY(pv_chunk) pc_list;
|
|
uint32_t pc_map[_NPCM]; /* bitmap; 1 = free */
|
|
TAILQ_ENTRY(pv_chunk) pc_lru;
|
|
struct pv_entry pc_pventry[_NPCPV];
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
struct pcb;
|
|
extern ttb_entry_t pmap_kern_ttb; /* TTB for kernel pmap */
|
|
|
|
#define pmap_page_get_memattr(m) ((vm_memattr_t)(m)->md.pat_mode)
|
|
#define pmap_page_is_write_mapped(m) (((m)->aflags & PGA_WRITEABLE) != 0)
|
|
|
|
/*
|
|
* Only the following functions or macros may be used before pmap_bootstrap()
|
|
* is called: pmap_kenter(), pmap_kextract(), pmap_kremove(), vtophys(), and
|
|
* vtopte2().
|
|
*/
|
|
void pmap_bootstrap(vm_offset_t );
|
|
void pmap_kenter(vm_offset_t , vm_paddr_t );
|
|
void *pmap_kenter_temporary(vm_paddr_t , int );
|
|
void pmap_kremove(vm_offset_t);
|
|
void *pmap_mapdev(vm_paddr_t, vm_size_t);
|
|
void *pmap_mapdev_attr(vm_paddr_t, vm_size_t, int);
|
|
boolean_t pmap_page_is_mapped(vm_page_t );
|
|
void pmap_page_set_memattr(vm_page_t , vm_memattr_t );
|
|
void pmap_unmapdev(vm_offset_t, vm_size_t);
|
|
void pmap_kenter_device(vm_offset_t, vm_size_t, vm_paddr_t);
|
|
void pmap_kremove_device(vm_offset_t, vm_size_t);
|
|
void pmap_set_pcb_pagedir(pmap_t , struct pcb *);
|
|
|
|
void pmap_tlb_flush(pmap_t , vm_offset_t );
|
|
void pmap_tlb_flush_range(pmap_t , vm_offset_t , vm_size_t );
|
|
void pmap_tlb_flush_ng(pmap_t );
|
|
|
|
void pmap_dcache_wb_range(vm_paddr_t , vm_size_t , vm_memattr_t );
|
|
|
|
vm_paddr_t pmap_kextract(vm_offset_t );
|
|
int pmap_fault(pmap_t , vm_offset_t , uint32_t , int , int );
|
|
#define vtophys(va) pmap_kextract((vm_offset_t)(va))
|
|
|
|
void pmap_set_tex(void);
|
|
void reinit_mmu(ttb_entry_t ttb, u_int aux_clr, u_int aux_set);
|
|
|
|
/*
|
|
* Pre-bootstrap epoch functions set.
|
|
*/
|
|
void pmap_bootstrap_prepare(vm_paddr_t );
|
|
vm_paddr_t pmap_preboot_get_pages(u_int );
|
|
void pmap_preboot_map_pages(vm_paddr_t , vm_offset_t , u_int );
|
|
vm_offset_t pmap_preboot_reserve_pages(u_int );
|
|
vm_offset_t pmap_preboot_get_vpages(u_int );
|
|
void pmap_preboot_map_attr(vm_paddr_t , vm_offset_t , vm_size_t ,
|
|
int , int );
|
|
static __inline void
|
|
pmap_map_chunk(vm_offset_t l1pt, vm_offset_t va, vm_offset_t pa,
|
|
vm_size_t size, int prot, int cache)
|
|
{
|
|
pmap_preboot_map_attr(pa, va, size, prot, cache);
|
|
}
|
|
|
|
/*
|
|
* This structure is used by machine-dependent code to describe
|
|
* static mappings of devices, created at bootstrap time.
|
|
*/
|
|
struct pmap_devmap {
|
|
vm_offset_t pd_va; /* virtual address */
|
|
vm_paddr_t pd_pa; /* physical address */
|
|
vm_size_t pd_size; /* size of region */
|
|
vm_prot_t pd_prot; /* protection code */
|
|
int pd_cache; /* cache attributes */
|
|
};
|
|
|
|
void pmap_devmap_bootstrap(const struct pmap_devmap *);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
// ----------------- TO BE DELETED ---------------------------------------------
|
|
#include <machine/pte-v6.h>
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/*
|
|
* sys/arm/arm/elf_trampoline.c
|
|
* sys/arm/arm/genassym.c
|
|
* sys/arm/arm/machdep.c
|
|
* sys/arm/arm/mp_machdep.c
|
|
* sys/arm/arm/locore.S
|
|
* sys/arm/arm/pmap.c
|
|
* sys/arm/arm/swtch.S
|
|
* sys/arm/at91/at91_machdep.c
|
|
* sys/arm/cavium/cns11xx/econa_machdep.c
|
|
* sys/arm/s3c2xx0/s3c24x0_machdep.c
|
|
* sys/arm/xscale/ixp425/avila_machdep.c
|
|
* sys/arm/xscale/i8134x/crb_machdep.c
|
|
* sys/arm/xscale/i80321/ep80219_machdep.c
|
|
* sys/arm/xscale/i80321/iq31244_machdep.c
|
|
* sys/arm/xscale/pxa/pxa_machdep.c
|
|
*/
|
|
#define PMAP_DOMAIN_KERNEL 0 /* The kernel uses domain #0 */
|
|
|
|
/*
|
|
* sys/arm/arm/busdma_machdep-v6.c
|
|
*/
|
|
int pmap_dmap_iscurrent(pmap_t pmap);
|
|
|
|
/*
|
|
* sys/arm/arm/cpufunc.c
|
|
*/
|
|
void pmap_pte_init_mmu_v6(void);
|
|
void vector_page_setprot(int);
|
|
|
|
|
|
/*
|
|
* sys/arm/arm/db_interface.c
|
|
* sys/arm/arm/machdep.c
|
|
* sys/arm/arm/minidump_machdep.c
|
|
* sys/arm/arm/pmap.c
|
|
*/
|
|
#define pmap_kernel() kernel_pmap
|
|
|
|
/*
|
|
* sys/arm/arm/bus_space_generic.c (just comment)
|
|
* sys/arm/arm/devmap.c
|
|
* sys/arm/arm/pmap.c (just comment)
|
|
* sys/arm/at91/at91_machdep.c
|
|
* sys/arm/cavium/cns11xx/econa_machdep.c
|
|
* sys/arm/freescale/imx/imx6_machdep.c (just comment)
|
|
* sys/arm/mv/orion/db88f5xxx.c
|
|
* sys/arm/mv/mv_localbus.c
|
|
* sys/arm/mv/mv_machdep.c
|
|
* sys/arm/mv/mv_pci.c
|
|
* sys/arm/s3c2xx0/s3c24x0_machdep.c
|
|
* sys/arm/versatile/versatile_machdep.c
|
|
* sys/arm/xscale/ixp425/avila_machdep.c
|
|
* sys/arm/xscale/i8134x/crb_machdep.c
|
|
* sys/arm/xscale/i80321/ep80219_machdep.c
|
|
* sys/arm/xscale/i80321/iq31244_machdep.c
|
|
* sys/arm/xscale/pxa/pxa_machdep.c
|
|
*/
|
|
#define PTE_DEVICE PTE2_ATTR_DEVICE
|
|
|
|
|
|
|
|
#endif /* _KERNEL */
|
|
// -----------------------------------------------------------------------------
|
|
|
|
#endif /* !_MACHINE_PMAP_H_ */
|