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freebsd-nq/sys/mips/include/vmparam.h

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FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing. This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming... Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser. In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
2008-04-13 07:27:37 +00:00
/* $OpenBSD: vmparam.h,v 1.2 1998/09/15 10:50:12 pefo Exp $ */
/* $NetBSD: vmparam.h,v 1.5 1994/10/26 21:10:10 cgd Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1992, 1993
* The 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 Ralph Campbell.
*
* 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.
* 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.
*
* from: Utah Hdr: vmparam.h 1.16 91/01/18
* @(#)vmparam.h 8.2 (Berkeley) 4/22/94
* JNPR: vmparam.h,v 1.3.2.1 2007/09/10 06:01:28 girish
* $FreeBSD$
*/
#ifndef _MACHINE_VMPARAM_H_
#define _MACHINE_VMPARAM_H_
/*
* Machine dependent constants mips processors.
*/
/*
* Virtual memory related constants, all in bytes
*/
#ifndef MAXTSIZ
#define MAXTSIZ (128UL*1024*1024) /* max text size */
#endif
#ifndef DFLDSIZ
#define DFLDSIZ (128UL*1024*1024) /* initial data size limit */
#endif
#ifndef MAXDSIZ
#define MAXDSIZ (1*1024UL*1024*1024) /* max data size */
#endif
#ifndef DFLSSIZ
#define DFLSSIZ (8UL*1024*1024) /* initial stack size limit */
#endif
#ifndef MAXSSIZ
#define MAXSSIZ (64UL*1024*1024) /* max stack size */
#endif
#ifndef SGROWSIZ
#define SGROWSIZ (128UL*1024) /* amount to grow stack */
#endif
/*
* Mach derived constants
*/
/* user/kernel map constants */
#define VM_MIN_ADDRESS ((vm_offset_t)0x00000000)
o) Add NPDEPG, like NPTEPG but for PDEs. o) Remove NBPG, PGOFSET and PGSHIFT. Use the standard names. o) Remove some unused macros and move things from param.h to vmparam.h that belong in the latter. (Actually, all of the kernel segment values, virtual addresses, etc., belong in one place, but this is a step in the right direction.)
2010-04-17 07:20:01 +00:00
#define VM_MAX_ADDRESS ((vm_offset_t)(intptr_t)(int32_t)0xffffffff)
#define VM_MINUSER_ADDRESS ((vm_offset_t)0x00000000)
FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing. This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming... Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser. In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
2008-04-13 07:27:37 +00:00
MIPS n64 support - continued... 1. On n64, use XKPHYS to map page table pages instead of KSEG0. Maintain just one freepages list on n64. The changes are mainly to introduce MIPS_PHYS_TO_DIRECT(pa), MIPS_DIRECT_TO_PHYS(), which will use KSEG0 in 32 bit compilation and XKPHYS in 64 bit compilation. 2. Change macro based PMAP_LMEM_MAP1(), PMAP_LMEM_MAP2(), PMAP_LMEM_UNMAP() to inline functions. 3. Introduce MIPS_DIRECT_MAPPABLE(pa), which will further reduce the cases in which we will need to have a special case for 64 bit compilation. 4. Update CP0 hazard definitions for CPU_RMI - the cpu does not need any nops Reviewed by: neel
2010-08-18 12:52:21 +00:00
#ifdef __mips_n64
Prepare for 3 level page tables for MIPS. - Move page table second level shift and mask to param.h - rename SEGOFSET to SEGMASK - fix values for 64 bit maximum kernel and user addresses.
2010-07-29 20:02:56 +00:00
#define VM_MAXUSER_ADDRESS (VM_MINUSER_ADDRESS + (NPDEPG * NBSEG))
Merge jmallett@'s n64 work into HEAD - changeset 7 Initial support for n32 and n64 ABIs from http://svn.freebsd.org/base/user/jmallett/octeon Changes are: - syscall, exception and trap support for n32/n64 ABIs - 64-bit address space defines - _jmp_buf for n32/n64 - casts between registers and ptr/int updated to work on n32/n64 Approved by: rrs(mentor), jmallett
2010-06-24 08:08:43 +00:00
#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)0xc000000000000000)
Prepare for 3 level page tables for MIPS. - Move page table second level shift and mask to param.h - rename SEGOFSET to SEGMASK - fix values for 64 bit maximum kernel and user addresses.
2010-07-29 20:02:56 +00:00
#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + (NPDEPG * NBSEG))
Merge jmallett@'s n64 work into HEAD - changeset 7 Initial support for n32 and n64 ABIs from http://svn.freebsd.org/base/user/jmallett/octeon Changes are: - syscall, exception and trap support for n32/n64 ABIs - 64-bit address space defines - _jmp_buf for n32/n64 - casts between registers and ptr/int updated to work on n32/n64 Approved by: rrs(mentor), jmallett
2010-06-24 08:08:43 +00:00
#else
#define VM_MAXUSER_ADDRESS ((vm_offset_t)0x80000000)
#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)0xC0000000)
#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)0xFFFFC000)
#endif
FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing. This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming... Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser. In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
2008-04-13 07:27:37 +00:00
Prepare for 3 level page tables for MIPS. - Move page table second level shift and mask to param.h - rename SEGOFSET to SEGMASK - fix values for 64 bit maximum kernel and user addresses.
2010-07-29 20:02:56 +00:00
#define KERNBASE ((vm_offset_t)(intptr_t)(int32_t)0x80000000)
/*
* USRSTACK needs to start a little below 0x8000000 because the R8000
* and some QED CPUs perform some virtual address checks before the
* offset is calculated.
*/
#define USRSTACK (VM_MAXUSER_ADDRESS - PAGE_SIZE)
o) Add COMPAT_FREEBSD32 support for MIPS kernels using the n64 ABI with userlands using the o32 ABI. This mostly follows nwhitehorn's lead in implementing COMPAT_FREEBSD32 on powerpc64. o) Add a new type to the freebsd32 compat layer, time32_t, which is time_t in the 32-bit ABI being used. Since the MIPS port is relatively-new, even the 32-bit ABIs use a 64-bit time_t. o) Because time{spec,val}32 has the same size and layout as time{spec,val} on MIPS with 32-bit compatibility, then, disable some code which assumes otherwise wrongly when built for MIPS. A more general macro to check in this case would seem like a good idea eventually. If someone adds support for using n32 userland with n64 kernels on MIPS, then they will have to add a variety of flags related to each piece of the ABI that can vary. That's probably the right time to generalize further. o) Add MIPS to the list of architectures which use PAD64_REQUIRED in the freebsd32 compat code. Probably this should be generalized at some point. Reviewed by: gonzo
2012-03-03 08:19:18 +00:00
#ifdef __mips_n64
#define FREEBSD32_USRSTACK (((vm_offset_t)0x80000000) - PAGE_SIZE)
#endif
Very rough first cut at NUMA support for the physical page allocator. For now it uses a very dumb first-touch allocation policy. This will change in the future. - Each architecture indicates the maximum number of supported memory domains via a new VM_NDOMAIN parameter in <machine/vmparam.h>. - Each cpu now has a PCPU_GET(domain) member to indicate the memory domain a CPU belongs to. Domain values are dense and numbered from 0. - When a platform supports multiple domains, the default freelist (VM_FREELIST_DEFAULT) is split up into N freelists, one for each domain. The MD code is required to populate an array of mem_affinity structures. Each entry in the array defines a range of memory (start and end) and a domain for the range. Multiple entries may be present for a single domain. The list is terminated by an entry where all fields are zero. This array of structures is used to split up phys_avail[] regions that fall in VM_FREELIST_DEFAULT into per-domain freelists. - Each memory domain has a separate lookup-array of freelists that is used when fulfulling a physical memory allocation. Right now the per-domain freelists are listed in a round-robin order for each domain. In the future a table such as the ACPI SLIT table may be used to order the per-domain lookup lists based on the penalty for each memory domain relative to a specific domain. The lookup lists may be examined via a new vm.phys.lookup_lists sysctl. - The first-touch policy is implemented by using PCPU_GET(domain) to pick a lookup list when allocating memory. Reviewed by: alc
2010-07-27 20:33:50 +00:00
/*
* Only one memory domain.
*/
#ifndef VM_NDOMAIN
#define VM_NDOMAIN 1
#endif
FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing. This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming... Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser. In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
2008-04-13 07:27:37 +00:00
/*
* Disable superpage reservations. (not sure if this is right
* I copied it from ARM)
*/
#ifndef VM_NRESERVLEVEL
#define VM_NRESERVLEVEL 0
#endif
/* virtual sizes (bytes) for various kernel submaps */
#ifndef VM_KMEM_SIZE
#define VM_KMEM_SIZE (12 * 1024 * 1024)
#endif
/*
* How many physical pages per KVA page allocated.
* min(max(VM_KMEM_SIZE, Physical memory/VM_KMEM_SIZE_SCALE), VM_KMEM_SIZE_MAX)
* is the total KVA space allocated for kmem_map.
*/
#ifndef VM_KMEM_SIZE_SCALE
#define VM_KMEM_SIZE_SCALE (3)
#endif
/*
* Ceiling on amount of kmem_map kva space.
*/
#ifndef VM_KMEM_SIZE_MAX
#define VM_KMEM_SIZE_MAX (200 * 1024 * 1024)
#endif
/* initial pagein size of beginning of executable file */
#ifndef VM_INITIAL_PAGEIN
#define VM_INITIAL_PAGEIN 16
#endif
UMA_MD_SMALL_ALLOC for mips. Implement uma_small_alloc() and uma_small_free() for mips that allocates pages from direct mapped memory. Uses the same mechanism as the page table page allocator, so that we allocate from KSEG0 in 32 bit, and from XKPHYS on 64 bit. Reviewed by: alc, jmallett
2010-12-09 06:34:28 +00:00
#define UMA_MD_SMALL_ALLOC
FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing. This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming... Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser. In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
2008-04-13 07:27:37 +00:00
/*
* max number of non-contig chunks of physical RAM you can have
*/
#define VM_PHYSSEG_MAX 32
/*
Most MIPS systems have a comparatively-sparse physical memory layout. Switch to using the sparse physseg layout in the VM system.
2010-04-24 03:11:35 +00:00
* The physical address space is sparsely populated.
FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing. This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming... Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser. In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
2008-04-13 07:27:37 +00:00
*/
Most MIPS systems have a comparatively-sparse physical memory layout. Switch to using the sparse physseg layout in the VM system.
2010-04-24 03:11:35 +00:00
#define VM_PHYSSEG_SPARSE
FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing. This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming... Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser. In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
2008-04-13 07:27:37 +00:00
/*
* Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool
* from which physical pages are allocated and VM_FREEPOOL_DIRECT is
* the pool from which physical pages for small UMA objects are
* allocated.
*/
#define VM_NFREEPOOL 3
#define VM_FREEPOOL_CACHE 2
#define VM_FREEPOOL_DEFAULT 0
#define VM_FREEPOOL_DIRECT 1
/*
Redo the page table page allocation on MIPS, as suggested by alc@. The UMA zone based allocation is replaced by a scheme that creates a new free page list for the KSEG0 region, and a new function in sys/vm that allocates pages from a specific free page list. This also fixes a race condition introduced by the UMA based page table page allocation code. Dropping the page queue and pmap locks before the call to uma_zfree, and re-acquiring them afterwards will introduce a race condtion(noted by alc@). The changes are : - Revert the earlier changes in MIPS pmap.c that added UMA zone for page table pages. - Add a new freelist VM_FREELIST_HIGHMEM to MIPS vmparam.h for memory that is not directly mapped (in 32bit kernel). Normal page allocations will first try the HIGHMEM freelist and then the default(direct mapped) freelist. - Add a new function 'vm_page_t vm_page_alloc_freelist(int flind, int order, int req)' to vm/vm_page.c to allocate a page from a specified freelist. The MIPS page table pages will be allocated using this function from the freelist containing direct mapped pages. - Move the page initialization code from vm_phys_alloc_contig() to a new function vm_page_alloc_init(), and use this function to initialize pages in vm_page_alloc_freelist() too. - Split the function vm_phys_alloc_pages(int pool, int order) to create vm_phys_alloc_freelist_pages(int flind, int pool, int order), and use this function from both vm_page_alloc_freelist() and vm_phys_alloc_pages(). Reviewed by: alc
2010-07-21 09:27:00 +00:00
* we support 2 free lists:
FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing. This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming... Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser. In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
2008-04-13 07:27:37 +00:00
*
Redo the page table page allocation on MIPS, as suggested by alc@. The UMA zone based allocation is replaced by a scheme that creates a new free page list for the KSEG0 region, and a new function in sys/vm that allocates pages from a specific free page list. This also fixes a race condition introduced by the UMA based page table page allocation code. Dropping the page queue and pmap locks before the call to uma_zfree, and re-acquiring them afterwards will introduce a race condtion(noted by alc@). The changes are : - Revert the earlier changes in MIPS pmap.c that added UMA zone for page table pages. - Add a new freelist VM_FREELIST_HIGHMEM to MIPS vmparam.h for memory that is not directly mapped (in 32bit kernel). Normal page allocations will first try the HIGHMEM freelist and then the default(direct mapped) freelist. - Add a new function 'vm_page_t vm_page_alloc_freelist(int flind, int order, int req)' to vm/vm_page.c to allocate a page from a specified freelist. The MIPS page table pages will be allocated using this function from the freelist containing direct mapped pages. - Move the page initialization code from vm_phys_alloc_contig() to a new function vm_page_alloc_init(), and use this function to initialize pages in vm_page_alloc_freelist() too. - Split the function vm_phys_alloc_pages(int pool, int order) to create vm_phys_alloc_freelist_pages(int flind, int pool, int order), and use this function from both vm_page_alloc_freelist() and vm_phys_alloc_pages(). Reviewed by: alc
2010-07-21 09:27:00 +00:00
* - DEFAULT for direct mapped (KSEG0) pages.
* Note: This usage of DEFAULT may be misleading because we use
* DEFAULT for allocating direct mapped pages. The normal page
* allocations use HIGHMEM if available, and then DEFAULT.
* - HIGHMEM for other pages
FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing. This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming... Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser. In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
2008-04-13 07:27:37 +00:00
*/
MIPS n64 support - continued... 1. On n64, use XKPHYS to map page table pages instead of KSEG0. Maintain just one freepages list on n64. The changes are mainly to introduce MIPS_PHYS_TO_DIRECT(pa), MIPS_DIRECT_TO_PHYS(), which will use KSEG0 in 32 bit compilation and XKPHYS in 64 bit compilation. 2. Change macro based PMAP_LMEM_MAP1(), PMAP_LMEM_MAP2(), PMAP_LMEM_UNMAP() to inline functions. 3. Introduce MIPS_DIRECT_MAPPABLE(pa), which will further reduce the cases in which we will need to have a special case for 64 bit compilation. 4. Update CP0 hazard definitions for CPU_RMI - the cpu does not need any nops Reviewed by: neel
2010-08-18 12:52:21 +00:00
#ifdef __mips_n64
FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing. This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming... Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser. In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
2008-04-13 07:27:37 +00:00
#define VM_NFREELIST 1
#define VM_FREELIST_DEFAULT 0
Get N64 building by defining VM_FREELIST_DIRECT to be VM_FREELIST_DEFAULT. I believe this is correct, since KX is set in n64, and thus all RAM can be direct mapped.
2010-07-25 04:19:05 +00:00
#define VM_FREELIST_DIRECT VM_FREELIST_DEFAULT
Redo the page table page allocation on MIPS, as suggested by alc@. The UMA zone based allocation is replaced by a scheme that creates a new free page list for the KSEG0 region, and a new function in sys/vm that allocates pages from a specific free page list. This also fixes a race condition introduced by the UMA based page table page allocation code. Dropping the page queue and pmap locks before the call to uma_zfree, and re-acquiring them afterwards will introduce a race condtion(noted by alc@). The changes are : - Revert the earlier changes in MIPS pmap.c that added UMA zone for page table pages. - Add a new freelist VM_FREELIST_HIGHMEM to MIPS vmparam.h for memory that is not directly mapped (in 32bit kernel). Normal page allocations will first try the HIGHMEM freelist and then the default(direct mapped) freelist. - Add a new function 'vm_page_t vm_page_alloc_freelist(int flind, int order, int req)' to vm/vm_page.c to allocate a page from a specified freelist. The MIPS page table pages will be allocated using this function from the freelist containing direct mapped pages. - Move the page initialization code from vm_phys_alloc_contig() to a new function vm_page_alloc_init(), and use this function to initialize pages in vm_page_alloc_freelist() too. - Split the function vm_phys_alloc_pages(int pool, int order) to create vm_phys_alloc_freelist_pages(int flind, int pool, int order), and use this function from both vm_page_alloc_freelist() and vm_phys_alloc_pages(). Reviewed by: alc
2010-07-21 09:27:00 +00:00
#else
#define VM_NFREELIST 2
#define VM_FREELIST_DEFAULT 1
#define VM_FREELIST_HIGHMEM 0
#define VM_FREELIST_DIRECT VM_FREELIST_DEFAULT
#define VM_HIGHMEM_ADDRESS ((vm_paddr_t)0x20000000)
#endif
FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing. This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming... Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser. In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
2008-04-13 07:27:37 +00:00
/*
* The largest allocation size is 1MB.
*/
#define VM_NFREEORDER 9
Move the ZERO_REGION_SIZE to a machine-dependent file, as on many architectures (i386, for example) the virtual memory space may be constrained enough that 2MB is a large chunk. Use 64K for arches other than amd64 and ia64, with special handling for sparc64 due to differing hardware. Also commit the comment changes to kmem_init_zero_region() that I missed due to not saving the file. (Darn the unfamiliar development environment). Arch maintainers, please feel free to adjust ZERO_REGION_SIZE as you see fit. Requested by: alc MFC after: 1 week MFC with: r221853
2011-05-13 19:35:01 +00:00
#define ZERO_REGION_SIZE (64 * 1024) /* 64KB */
FreeBSD/mips port. The FreeBSD/mips port targets mips32, mips64, mips32r2 and mips64r2 (and close relatives) processors. There presently is support for ADMtek ADM5120, A mips 4Kc in a malta board, the RB533 routerboard (based on IDT RC32434) and some preliminary support for sibtye/broadcom designs. Other hardware support will be forthcomcing. This port boots multiuser under gxemul emulating the malta board and also bootstraps on the hardware whose support is forthcoming... Oleksandr Tymoshenko, Wojciech Koszek, Warner Losh, Olivier Houchard, Randall Stewert and others that have contributed to the mips2 and/or mips2-jnpr perforce branches. Juniper contirbuted a generic mips port late in the life cycle of the misp2 branch. Warner Losh merged the mips2 and Juniper code bases, and others list above have worked for the past several months to get to multiuser. In addition, the mips2 work owe a debt to the trail blazing efforts of the original mips branch in perforce done by Juli Mallett.
2008-04-13 07:27:37 +00:00
#endif /* !_MACHINE_VMPARAM_H_ */
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