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Diffstat (limited to 'sys/ia64/include/vmparam.h')
| -rw-r--r-- | sys/ia64/include/vmparam.h | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/sys/ia64/include/vmparam.h b/sys/ia64/include/vmparam.h deleted file mode 100644 index edae4c4..0000000 --- a/sys/ia64/include/vmparam.h +++ /dev/null @@ -1,206 +0,0 @@ -/*- - * 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 - * - * $FreeBSD$ - */ - -#ifndef _MACHINE_VMPARAM_H_ -#define _MACHINE_VMPARAM_H_ - -/* - * Virtual memory related constants, all in bytes - */ -#ifndef MAXTSIZ -#define MAXTSIZ (1<<30) /* max text size (1G) */ -#endif -#ifndef DFLDSIZ -#define DFLDSIZ (1<<27) /* initial data size (128M) */ -#endif -#ifndef MAXDSIZ -#define MAXDSIZ (1<<30) /* max data size (1G) */ -#endif -#ifndef DFLSSIZ -#define DFLSSIZ (1<<21) /* initial stack size (2M) */ -#endif -#ifndef MAXSSIZ -#define MAXSSIZ (1<<28) /* max stack size (256M) */ -#endif -#ifndef SGROWSIZ -#define SGROWSIZ (128UL*1024) /* amount to grow stack */ -#endif - -/* - * We need region 7 virtual addresses for pagetables. - */ -#define UMA_MD_SMALL_ALLOC - -/* - * The physical address space is sparsely populated. - */ -#define VM_PHYSSEG_SPARSE - -/* - * The number of PHYSSEG entries is equal to the number of phys_avail - * entries. - */ -#define VM_PHYSSEG_MAX 49 - -/* - * 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 - -/* - * Create one free page list. - */ -#define VM_NFREELIST 1 -#define VM_FREELIST_DEFAULT 0 - -/* - * An allocation size of 256MB is supported in order to optimize the - * use of the identity mappings in region 7 by UMA. - */ -#define VM_NFREEORDER 16 - -/* - * Disable superpage reservations. - */ -#ifndef VM_NRESERVLEVEL -#define VM_NRESERVLEVEL 0 -#endif - -#define IA64_VM_MINKERN_REGION 4 - -/* - * Manipulating region bits of an address. - */ -#define IA64_RR_BASE(n) (((uint64_t) (n)) << 61) -#define IA64_RR_MASK(x) ((x) & ((1L << 61) - 1)) - -#define IA64_PHYS_TO_RR6(x) ((x) | IA64_RR_BASE(6)) -#define IA64_PHYS_TO_RR7(x) ((x) | IA64_RR_BASE(7)) - -/* - * The Itanium architecture defines that all implementations support at - * least 51 virtual address bits (i.e. IMPL_VA_MSB=50). The unimplemented - * bits are sign-extended from VA{IMPL_VA_MSB}. As such, there's a gap in - * the virtual address range, which extends at most from 0x0004000000000000 - * to 0x1ffbffffffffffff. We define the top half of a region in terms of - * this worst-case gap. - */ -#define IA64_REGION_GAP_START 0x0004000000000000 -#define IA64_REGION_GAP_EXTEND 0x1ffc000000000000 - -/* - * Parameters for Pre-Boot Virtual Memory (PBVM). - * The kernel, its modules and metadata are loaded in the PBVM by the loader. - * The PBVM consists of pages for which the mapping is maintained in a page - * table. The page table is at least 1 EFI page large (i.e. 4KB), but can be - * larger to accommodate more PBVM. The maximum page table size is 1MB. With - * 8 bytes per page table entry, this means that the PBVM has at least 512 - * pages and at most 128K pages. - * The GNU toolchain (in particular GNU ld) does not support an alignment - * larger than 64K. This means that we cannot guarantee page alignment for - * a page size that's larger than 64K. We do want to have text and data in - * different pages, which means that the maximum usable page size is 64KB. - * Consequently: - * The maximum total PBVM size is 8GB -- enough for a DVD image. A page table - * of a single EFI page (4KB) allows for 32MB of PBVM. - * - * The kernel is given the PA and size of the page table that provides the - * mapping of the PBVM. The page table itself is assumed to be mapped at a - * known virtual address and using a single translation wired into the CPU. - * As such, the page table is assumed to be a power of 2 and naturally aligned. - * The kernel also assumes that a good portion of the kernel text is mapped - * and wired into the CPU, but does not assume that the mapping covers the - * whole of PBVM. - */ -#define IA64_PBVM_RR IA64_VM_MINKERN_REGION -#define IA64_PBVM_BASE \ - (IA64_RR_BASE(IA64_PBVM_RR) + IA64_REGION_GAP_EXTEND) - -#define IA64_PBVM_PGTBL_MAXSZ 1048576 -#define IA64_PBVM_PGTBL \ - (IA64_RR_BASE(IA64_PBVM_RR + 1) - IA64_PBVM_PGTBL_MAXSZ) - -#define IA64_PBVM_PAGE_SHIFT 16 /* 64KB */ -#define IA64_PBVM_PAGE_SIZE (1 << IA64_PBVM_PAGE_SHIFT) -#define IA64_PBVM_PAGE_MASK (IA64_PBVM_PAGE_SIZE - 1) - -/* - * Mach derived constants - */ - -/* user/kernel map constants */ -#define VM_MIN_ADDRESS 0 -#define VM_MAXUSER_ADDRESS IA64_RR_BASE(IA64_VM_MINKERN_REGION) -#define VM_MIN_KERNEL_ADDRESS VM_MAXUSER_ADDRESS -#define VM_INIT_KERNEL_ADDRESS IA64_RR_BASE(IA64_VM_MINKERN_REGION + 1) -#define VM_MAX_KERNEL_ADDRESS (IA64_RR_BASE(IA64_VM_MINKERN_REGION + 2) - 1) -#define VM_MAX_ADDRESS ~0UL - -/* We link the kernel at IA64_PBVM_BASE. */ -#define KERNBASE IA64_PBVM_BASE - -/* - * USRSTACK is the top (end) of the user stack. Immediately above the user - * stack resides the syscall gateway page. - */ -#define USRSTACK VM_MAXUSER_ADDRESS -#define IA64_BACKINGSTORE (USRSTACK - (2 * MAXSSIZ) - PAGE_SIZE) - -/* - * How many physical pages per kmem arena virtual page. - */ -#ifndef VM_KMEM_SIZE_SCALE -#define VM_KMEM_SIZE_SCALE (4) -#endif - -/* initial pagein size of beginning of executable file */ -#ifndef VM_INITIAL_PAGEIN -#define VM_INITIAL_PAGEIN 16 -#endif - -#define ZERO_REGION_SIZE (2 * 1024 * 1024) /* 2MB */ - -#endif /* !_MACHINE_VMPARAM_H_ */ |
