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freebsd-dev/sys/alpha/include/pmap.h

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Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
/*
* Copyright (c) 1991 Regents of the University of California.
* All rights reserved.
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
* Science Department and William Jolitz of UUNET Technologies Inc.
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
* 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: i386 pmap.h,v 1.54 1997/11/20 19:30:35 bde Exp
$Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00
* $FreeBSD$
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
*/
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
#ifndef _MACHINE_PMAP_H_
#define _MACHINE_PMAP_H_
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
/*
* Define meanings for a few software bits in the pte
*/
#define PG_V ALPHA_PTE_VALID
#define PG_FOR ALPHA_PTE_FAULT_ON_READ
#define PG_FOW ALPHA_PTE_FAULT_ON_WRITE
#define PG_FOE ALPHA_PTE_FAULT_ON_EXECUTE
#define PG_ASM ALPHA_PTE_ASM
#define PG_GH ALPHA_PTE_GRANULARITY
#define PG_KRE ALPHA_PTE_KR
#define PG_URE ALPHA_PTE_UR
#define PG_KWE ALPHA_PTE_KW
#define PG_UWE ALPHA_PTE_UW
#define PG_PROT ALPHA_PTE_PROT
#define PG_SHIFT 32
#define PG_W 0x00010000 /* software wired */
#define PG_MANAGED 0x00020000 /* software managed */
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
/*
* Pte related macros
*/
#define VADDR(l1, l2, l3) (((l1) << ALPHA_L1SHIFT) \
+ ((l2) << ALPHA_L2SHIFT) \
+ ((l3) << ALPHA_L3SHIFT)
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
#ifndef NKPT
#define NKPT 9 /* initial number of kernel page tables */
#endif
#define NKLEV2MAPS 255 /* max number of lev2 page tables */
#define NKLEV3MAPS (NKLEV2MAPS << ALPHA_PTSHIFT) /* max number of lev3 page tables */
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
/*
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
* The *PTDI values control the layout of virtual memory
*
* XXX This works for now, but I am not real happy with it, I'll fix it
* right after I fix locore.s and the magic 28K hole
*
* SMP_PRIVPAGES: The per-cpu address space is 0xff80000 -> 0xffbfffff
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
*/
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
#define PTLEV1I (NPTEPG-1) /* Lev0 entry that points to Lev0 */
#define K0SEGLEV1I (NPTEPG/2)
#define K1SEGLEV1I (K0SEGLEV1I+(NPTEPG/4))
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
#define NUSERLEV2MAPS (NPTEPG/2)
#define NUSERLEV3MAPS (NUSERLEV2MAPS << ALPHA_PTSHIFT)
#ifndef LOCORE
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
#include <sys/queue.h>
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
typedef alpha_pt_entry_t pt_entry_t;
#define PTESIZE sizeof(pt_entry_t) /* for assembly files */
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
/*
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
* Address of current address space page table maps
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
*/
Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
1999-12-29 04:46:21 +00:00
#ifdef _KERNEL
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
extern pt_entry_t PTmap[]; /* lev3 page tables */
extern pt_entry_t PTlev2[]; /* lev2 page tables */
extern pt_entry_t PTlev1[]; /* lev1 page table */
extern pt_entry_t PTlev1pte; /* pte that maps lev1 page table */
#endif
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
1999-12-29 04:46:21 +00:00
#ifdef _KERNEL
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
/*
* virtual address to page table entry and
* to physical address.
* Note: this work recursively, thus vtopte of a pte will give
* the corresponding lev1 that in turn maps it.
*/
#define vtopte(va) (PTmap + (alpha_btop(va) \
& ((1 << 3*ALPHA_PTSHIFT)-1)))
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
/*
* Routine: pmap_kextract
* Function:
* Extract the physical page address associated
* kernel virtual address.
*/
static __inline vm_offset_t
pmap_kextract(vm_offset_t va)
{
vm_offset_t pa;
if (va >= ALPHA_K0SEG_BASE && va <= ALPHA_K0SEG_END)
pa = ALPHA_K0SEG_TO_PHYS(va);
else
pa = alpha_ptob(ALPHA_PTE_TO_PFN(*vtopte(va)))
| (va & PAGE_MASK);
return pa;
}
#define vtophys(va) pmap_kextract(((vm_offset_t) (va)))
Allow chipset drivers to specify the direct-mapped DMA window's mask in preparation for tsunami support. Previous chipsets' direct-mapped DMA mask was always 1024*1024*1024. The Tsunami chipset needs it to be 2*1024*1024*1024 These changes should not affect the i386 port Reviewed by: Doug Rabson <dfr@nlsystems.com>
1999-05-26 23:01:57 +00:00
extern vm_offset_t alpha_XXX_dmamap_or;
static __inline vm_offset_t
alpha_XXX_dmamap(vm_offset_t va)
{
return (pmap_kextract(va) | alpha_XXX_dmamap_or);
}
Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
1999-12-29 04:46:21 +00:00
#endif /* _KERNEL */
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
/*
* Pmap stuff
*/
struct pv_entry;
Implement an optimization of the VM<->pmap API. Pass vm_page_t's directly to various pmap_*() functions instead of looking up the physical address and passing that. In many cases, the first thing the pmap code was doing was going to a lot of trouble to get back the original vm_page_t, or it's shadow pv_table entry. Inspired by: John Dyson's 1998 patches. Also: Eliminate pv_table as a seperate thing and build it into a machine dependent part of vm_page_t. This eliminates having a seperate set of structions that shadow each other in a 1:1 fashion that we often went to a lot of trouble to translate from one to the other. (see above) This happens to save 4 bytes of physical memory for each page in the system. (8 bytes on the Alpha). Eliminate the use of the phys_avail[] array to determine if a page is managed (ie: it has pv_entries etc). Store this information in a flag. Things like device_pager set it because they create vm_page_t's on the fly that do not have pv_entries. This makes it easier to "unmanage" a page of physical memory (this will be taken advantage of in subsequent commits). Add a function to add a new page to the freelist. This could be used for reclaiming the previously wasted pages left over from preloaded loader(8) files. Reviewed by: dillon
2000-05-21 12:50:18 +00:00
struct md_page {
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
int pv_list_count;
int pv_flags;
Back out the previous change to the queue(3) interface. It was not discussed and should probably not happen. Requested by: msmith and others
2000-05-26 02:09:24 +00:00
TAILQ_HEAD(,pv_entry) pv_list;
Implement an optimization of the VM<->pmap API. Pass vm_page_t's directly to various pmap_*() functions instead of looking up the physical address and passing that. In many cases, the first thing the pmap code was doing was going to a lot of trouble to get back the original vm_page_t, or it's shadow pv_table entry. Inspired by: John Dyson's 1998 patches. Also: Eliminate pv_table as a seperate thing and build it into a machine dependent part of vm_page_t. This eliminates having a seperate set of structions that shadow each other in a 1:1 fashion that we often went to a lot of trouble to translate from one to the other. (see above) This happens to save 4 bytes of physical memory for each page in the system. (8 bytes on the Alpha). Eliminate the use of the phys_avail[] array to determine if a page is managed (ie: it has pv_entries etc). Store this information in a flag. Things like device_pager set it because they create vm_page_t's on the fly that do not have pv_entries. This makes it easier to "unmanage" a page of physical memory (this will be taken advantage of in subsequent commits). Add a function to add a new page to the freelist. This could be used for reclaiming the previously wasted pages left over from preloaded loader(8) files. Reviewed by: dillon
2000-05-21 12:50:18 +00:00
};
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
Fixes for alpha pmap on SMP machines: - Create a private list of active pmaps rather than abusing the list of all processes when we need to look up pmaps. The process list needs a sx lock and we can't be getting sx locks in the middle of cpu_switch() (pmap_activate() can call pmap_get_asn() from cpu_switch()). Instead, we protect the list with a spinlock. This also means the list is shorter since a pmap can be used by more than one process and we could (at least in thoery) dink with pmap's more than once, but now we only touch each pmap once when we have to update all of them. - Wrap pmap_activate()'s code to get a new ASN in an explicit critical section so that when it is called while doing an exec() we can't get preempted. - Replace splhigh() in pmap_growkernel() with a critical section to prevent preemption while we are adjusting the kernel page tables. - Fixes abuse of PCPU_GET(), which doesn't return an L-value. - Also adds some slight cleanups to the ASN handling by adding some macros instead of magic numbers in relation to the ASN and ASN generations. Reviewed by: dfr
2002-02-06 04:30:26 +00:00
#define ASN_BITS 8
#define ASNGEN_BITS (32 - ASN_BITS)
#define ASNGEN_MASK ((1 << ASNGEN_BITS) - 1)
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
struct pmap {
pt_entry_t *pm_lev1; /* KVA of lev0map */
vm_object_t pm_pteobj; /* Container for pte's */
Back out the previous change to the queue(3) interface. It was not discussed and should probably not happen. Requested by: msmith and others
2000-05-26 02:09:24 +00:00
TAILQ_HEAD(,pv_entry) pm_pvlist; /* list of mappings in pmap */
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
u_int32_t pm_active; /* active cpus */
struct {
Fixes for alpha pmap on SMP machines: - Create a private list of active pmaps rather than abusing the list of all processes when we need to look up pmaps. The process list needs a sx lock and we can't be getting sx locks in the middle of cpu_switch() (pmap_activate() can call pmap_get_asn() from cpu_switch()). Instead, we protect the list with a spinlock. This also means the list is shorter since a pmap can be used by more than one process and we could (at least in thoery) dink with pmap's more than once, but now we only touch each pmap once when we have to update all of them. - Wrap pmap_activate()'s code to get a new ASN in an explicit critical section so that when it is called while doing an exec() we can't get preempted. - Replace splhigh() in pmap_growkernel() with a critical section to prevent preemption while we are adjusting the kernel page tables. - Fixes abuse of PCPU_GET(), which doesn't return an L-value. - Also adds some slight cleanups to the ASN handling by adding some macros instead of magic numbers in relation to the ASN and ASN generations. Reviewed by: dfr
2002-02-06 04:30:26 +00:00
u_int32_t asn:ASN_BITS; /* address space number */
u_int32_t gen:ASNGEN_BITS; /* generation number */
Move MAXCPU from machine/smp.h to machine/param.h to fix breakage with !SMP kernels. Also, replace NCPUS with MAXCPU since they are redundant.
2000-09-23 12:18:06 +00:00
} pm_asn[MAXCPU];
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
struct pmap_statistics pm_stats; /* pmap statistics */
struct vm_page *pm_ptphint; /* pmap ptp hint */
Fixes for alpha pmap on SMP machines: - Create a private list of active pmaps rather than abusing the list of all processes when we need to look up pmaps. The process list needs a sx lock and we can't be getting sx locks in the middle of cpu_switch() (pmap_activate() can call pmap_get_asn() from cpu_switch()). Instead, we protect the list with a spinlock. This also means the list is shorter since a pmap can be used by more than one process and we could (at least in thoery) dink with pmap's more than once, but now we only touch each pmap once when we have to update all of them. - Wrap pmap_activate()'s code to get a new ASN in an explicit critical section so that when it is called while doing an exec() we can't get preempted. - Replace splhigh() in pmap_growkernel() with a critical section to prevent preemption while we are adjusting the kernel page tables. - Fixes abuse of PCPU_GET(), which doesn't return an L-value. - Also adds some slight cleanups to the ASN handling by adding some macros instead of magic numbers in relation to the ASN and ASN generations. Reviewed by: dfr
2002-02-06 04:30:26 +00:00
LIST_ENTRY(pmap) pm_list; /* list of all pmaps. */
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
};
o Introduce pmap_page_is_mapped(). Its purpose is to obsolete the PG_MAPPED flag.
2002-08-07 18:03:00 +00:00
#define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list))
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
#define pmap_resident_count(pmap) (pmap)->pm_stats.resident_count
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
#define PM_FLAG_LOCKED 0x1
#define PM_FLAG_WANTED 0x2
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
typedef struct pmap *pmap_t;
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
1999-12-29 04:46:21 +00:00
#ifdef _KERNEL
Tidy up some loose ends. i386/ia64/alpha - catch up to sparc64/ppc: - replace pmap_kernel() with refs to kernel_pmap - change kernel_pmap pointer to (&kernel_pmap_store) (this is a speedup since ld can set these at compile/link time) all platforms (as suggested by jake): - gc unused pmap_reference - gc unused pmap_destroy - gc unused struct pmap.pm_count (we never used pm_count - we track address space sharing at the vmspace)
2002-04-29 07:43:16 +00:00
extern struct pmap kernel_pmap_store;
#define kernel_pmap (&kernel_pmap_store)
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
#endif
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
/*
* 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.
*/
typedef struct pv_entry {
pmap_t pv_pmap; /* pmap where mapping lies */
vm_offset_t pv_va; /* virtual address for mapping */
Back out the previous change to the queue(3) interface. It was not discussed and should probably not happen. Requested by: msmith and others
2000-05-26 02:09:24 +00:00
TAILQ_ENTRY(pv_entry) pv_list;
TAILQ_ENTRY(pv_entry) pv_plist;
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
vm_page_t pv_ptem; /* VM page for pte */
} *pv_entry_t;
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
#define PV_ENTRY_NULL ((pv_entry_t) 0)
#define PV_CI 0x01 /* all entries must be cache inhibited */
#define PV_PTPAGE 0x02 /* entry maps a page table page */
Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
1999-12-29 04:46:21 +00:00
#ifdef _KERNEL
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
extern caddr_t CADDR1;
extern pt_entry_t *CMAP1;
extern vm_offset_t avail_end;
extern vm_offset_t avail_start;
extern vm_offset_t clean_eva;
extern vm_offset_t clean_sva;
extern vm_offset_t phys_avail[];
extern vm_offset_t virtual_avail;
extern vm_offset_t virtual_end;
KSE Milestone 2 Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
2001-09-12 08:38:13 +00:00
struct vmspace;
Remove __P(). This was tested on the GENERIC kernel.
2002-03-20 18:58:47 +00:00
vm_offset_t pmap_steal_memory(vm_size_t);
void pmap_bootstrap(vm_offset_t, u_int);
void pmap_setdevram(unsigned long long basea, vm_offset_t sizea);
int pmap_uses_prom_console(void);
void *pmap_mapdev(vm_offset_t, vm_size_t);
void pmap_unmapdev(vm_offset_t, vm_size_t);
unsigned *pmap_pte(pmap_t, vm_offset_t) __pure2;
vm_page_t pmap_use_pt(pmap_t, vm_offset_t);
void pmap_set_opt (unsigned *);
void pmap_set_opt_bsp (void);
void pmap_deactivate(struct thread *td);
void pmap_emulate_reference(struct vmspace *vm, vm_offset_t v, int user, int write);
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
1999-12-29 04:46:21 +00:00
#endif /* _KERNEL */
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
#endif /* !LOCORE */
#endif /* !_MACHINE_PMAP_H_ */
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