| pmap.h (147671) | pmap.h (153179) |
|---|---|
| 1/*- 2 * Copyright (c) 1991 Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * the Systems Programming Group of the University of Utah Computer 7 * Science Department and William Jolitz of UUNET Technologies Inc. 8 * --- 24 unchanged lines hidden (view full) --- 33 * Derived from hp300 version by Mike Hibler, this version by William 34 * Jolitz uses a recursive map [a pde points to the page directory] to 35 * map the page tables using the pagetables themselves. This is done to 36 * reduce the impact on kernel virtual memory for lots of sparse address 37 * space, and to reduce the cost of memory to each process. 38 * 39 * from: hp300: @(#)pmap.h 7.2 (Berkeley) 12/16/90 40 * from: @(#)pmap.h 7.4 (Berkeley) 5/12/91 | 1/*- 2 * Copyright (c) 1991 Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * the Systems Programming Group of the University of Utah Computer 7 * Science Department and William Jolitz of UUNET Technologies Inc. 8 * --- 24 unchanged lines hidden (view full) --- 33 * Derived from hp300 version by Mike Hibler, this version by William 34 * Jolitz uses a recursive map [a pde points to the page directory] to 35 * map the page tables using the pagetables themselves. This is done to 36 * reduce the impact on kernel virtual memory for lots of sparse address 37 * space, and to reduce the cost of memory to each process. 38 * 39 * from: hp300: @(#)pmap.h 7.2 (Berkeley) 12/16/90 40 * from: @(#)pmap.h 7.4 (Berkeley) 5/12/91 |
| 41 * $FreeBSD: head/sys/i386/include/pmap.h 147671 2005-06-29 22:28:46Z peter $ | 41 * $FreeBSD: head/sys/i386/include/pmap.h 153179 2005-12-06 21:09:01Z jhb $ |
| 42 */ 43 44#ifndef _MACHINE_PMAP_H_ 45#define _MACHINE_PMAP_H_ 46 47/* | 42 */ 43 44#ifndef _MACHINE_PMAP_H_ 45#define _MACHINE_PMAP_H_ 46 47/* |
| 48 * Page-directory and page-table entires follow this format, with a few | 48 * Page-directory and page-table entries follow this format, with a few |
| 49 * of the fields not present here and there, depending on a lot of things. 50 */ 51 /* ---- Intel Nomenclature ---- */ 52#define PG_V 0x001 /* P Valid */ 53#define PG_RW 0x002 /* R/W Read/Write */ 54#define PG_U 0x004 /* U/S User/Supervisor */ 55#define PG_NC_PWT 0x008 /* PWT Write through */ 56#define PG_NC_PCD 0x010 /* PCD Cache disable */ --- 115 unchanged lines hidden (view full) --- 172extern pdpt_entry_t *IdlePDPT; 173#endif 174extern pd_entry_t *IdlePTD; /* physical address of "Idle" state directory */ 175#endif 176 177#ifdef _KERNEL 178/* 179 * virtual address to page table entry and | 49 * of the fields not present here and there, depending on a lot of things. 50 */ 51 /* ---- Intel Nomenclature ---- */ 52#define PG_V 0x001 /* P Valid */ 53#define PG_RW 0x002 /* R/W Read/Write */ 54#define PG_U 0x004 /* U/S User/Supervisor */ 55#define PG_NC_PWT 0x008 /* PWT Write through */ 56#define PG_NC_PCD 0x010 /* PCD Cache disable */ --- 115 unchanged lines hidden (view full) --- 172extern pdpt_entry_t *IdlePDPT; 173#endif 174extern pd_entry_t *IdlePTD; /* physical address of "Idle" state directory */ 175#endif 176 177#ifdef _KERNEL 178/* 179 * virtual address to page table entry and |
| 180 * to physical address. Likewise for alternate address space. | 180 * to physical address. |
| 181 * Note: these work recursively, thus vtopte of a pte will give 182 * the corresponding pde that in turn maps it. 183 */ 184#define vtopte(va) (PTmap + i386_btop(va)) | 181 * Note: these work recursively, thus vtopte of a pte will give 182 * the corresponding pde that in turn maps it. 183 */ 184#define vtopte(va) (PTmap + i386_btop(va)) |
| 185#define vtophys(va) pmap_kextract((vm_offset_t)(va)) |
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| 185 186/* 187 * Routine: pmap_kextract 188 * Function: 189 * Extract the physical page address associated 190 * kernel virtual address. 191 */ 192static __inline vm_paddr_t --- 5 unchanged lines hidden (view full) --- 198 pa = (pa & ~(NBPDR - 1)) | (va & (NBPDR - 1)); 199 } else { 200 pa = *vtopte(va); 201 pa = (pa & PG_FRAME) | (va & PAGE_MASK); 202 } 203 return pa; 204} 205 | 186 187/* 188 * Routine: pmap_kextract 189 * Function: 190 * Extract the physical page address associated 191 * kernel virtual address. 192 */ 193static __inline vm_paddr_t --- 5 unchanged lines hidden (view full) --- 199 pa = (pa & ~(NBPDR - 1)) | (va & (NBPDR - 1)); 200 } else { 201 pa = *vtopte(va); 202 pa = (pa & PG_FRAME) | (va & PAGE_MASK); 203 } 204 return pa; 205} 206 |
| 206#define vtophys(va) pmap_kextract(((vm_offset_t) (va))) 207 | |
| 208#ifdef PAE 209 210static __inline pt_entry_t 211pte_load(pt_entry_t *ptep) 212{ 213 pt_entry_t r; 214 215 __asm __volatile( --- 159 unchanged lines hidden --- | 207#ifdef PAE 208 209static __inline pt_entry_t 210pte_load(pt_entry_t *ptep) 211{ 212 pt_entry_t r; 213 214 __asm __volatile( --- 159 unchanged lines hidden --- |