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1ebcad5720
not work on any real hardware (or fully work on any simulator). Much more needs to happen before this is actually functional but its nice to see the FreeBSD copyright message appear in the ia64 simulator.
234 lines
7.0 KiB
C
234 lines
7.0 KiB
C
/*
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* Copyright (c) 1991 Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department and William Jolitz of UUNET Technologies Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Derived from hp300 version by Mike Hibler, this version by William
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* Jolitz uses a recursive map [a pde points to the page directory] to
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* map the page tables using the pagetables themselves. This is done to
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* reduce the impact on kernel virtual memory for lots of sparse address
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* space, and to reduce the cost of memory to each process.
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*
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* from: hp300: @(#)pmap.h 7.2 (Berkeley) 12/16/90
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* from: @(#)pmap.h 7.4 (Berkeley) 5/12/91
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* from: i386 pmap.h,v 1.54 1997/11/20 19:30:35 bde Exp
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* $FreeBSD$
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*/
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#ifndef _MACHINE_PMAP_H_
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#define _MACHINE_PMAP_H_
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#ifdef LOCORE
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#define PTE_P (1<<0)
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#define PTE_MA_WB (0<<2)
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#define PTE_MA_UC (4<<2)
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#define PTE_MA_UCE (5<<2)
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#define PTE_MA_WC (6<<2)
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#define PTE_MA_NATPAGE (7<<2)
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#define PTE_A (1<<5)
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#define PTE_D (1<<6)
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#define PTE_PL_KERN (0<<7)
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#define PTE_PL_USER (3<<7)
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#define PTE_AR_R (0<<9)
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#define PTE_AR_RX (1<<9)
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#define PTE_AR_RW (2<<9)
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#define PTE_AR_RWX (3<<9)
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#define PTE_AR_R_RW (4<<9)
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#define PTE_AR_RX_RWX (5<<9)
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#define PTE_AR_RWX_RW (6<<9)
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#define PTE_AR_X_RX (7<<9)
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#else
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#define PTE_MA_WB 0
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#define PTE_MA_UC 4
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#define PTE_MA_UCE 5
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#define PTE_MA_WC 6
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#define PTE_MA_NATPAGE 7
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#define PTE_PL_KERN 0
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#define PTE_PL_USER 3
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#define PTE_AR_R 0
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#define PTE_AR_RX 1
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#define PTE_AR_RW 2
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#define PTE_AR_RWX 3
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#define PTE_AR_R_RW 4
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#define PTE_AR_RX_RWX 5
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#define PTE_AR_RWX_RW 6
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#define PTE_AR_X_RX 7
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#define PTE_IG_WIRED 1
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#define PTE_IG_MANAGED 2
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/*
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* A short-format VHPT entry. Also matches the TLB insertion format.
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*/
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struct ia64_pte {
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u_int64_t pte_p :1; /* bits 0..0 */
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u_int64_t pte_rv1 :1; /* bits 1..1 */
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u_int64_t pte_ma :3; /* bits 2..4 */
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u_int64_t pte_a :1; /* bits 5..5 */
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u_int64_t pte_d :1; /* bits 6..6 */
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u_int64_t pte_pl :2; /* bits 7..8 */
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u_int64_t pte_ar :3; /* bits 9..11 */
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u_int64_t pte_ppn :38; /* bits 12..49 */
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u_int64_t pte_rv2 :2; /* bits 50..51 */
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u_int64_t pte_ed :1; /* bits 52..52 */
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u_int64_t pte_ig :11; /* bits 53..63 */
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};
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/*
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* A long-format VHPT entry.
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*/
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struct ia64_lpte {
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u_int64_t pte_p :1; /* bits 0..0 */
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u_int64_t pte_rv1 :1; /* bits 1..1 */
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u_int64_t pte_ma :3; /* bits 2..4 */
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u_int64_t pte_a :1; /* bits 5..5 */
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u_int64_t pte_d :1; /* bits 6..6 */
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u_int64_t pte_pl :2; /* bits 7..8 */
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u_int64_t pte_ar :3; /* bits 9..11 */
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u_int64_t pte_ppn :38; /* bits 12..49 */
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u_int64_t pte_rv2 :2; /* bits 50..51 */
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u_int64_t pte_ed :1; /* bits 52..52 */
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u_int64_t pte_ig :11; /* bits 53..63 */
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u_int64_t pte_rv3 :2; /* bits 0..1 */
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u_int64_t pte_ps :6; /* bits 2..7 */
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u_int64_t pte_key :24; /* bits 8..31 */
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u_int64_t pte_rv4 :32; /* bits 32..63 */
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u_int64_t pte_tag; /* includes ti */
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u_int64_t pte_chain; /* pa of collision chain */
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};
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#include <sys/queue.h>
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#ifdef _KERNEL
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/*
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* Routine: pmap_kextract
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* Function:
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* Extract the physical page address associated
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* kernel virtual address.
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*/
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static __inline vm_offset_t
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pmap_kextract(vm_offset_t va)
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{
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return ia64_tpa(va);
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}
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#define vtophys(va) pmap_kextract(((vm_offset_t) (va)))
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#endif /* _KERNEL */
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/*
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* Pmap stuff
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*/
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struct pv_entry;
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struct md_page {
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int pv_list_count;
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TAILQ_HEAD(,pv_entry) pv_list;
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};
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struct pmap {
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TAILQ_HEAD(,pv_entry) pm_pvlist; /* list of mappings in pmap */
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int pm_count; /* reference count */
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int pm_flags; /* pmap flags */
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int pm_active; /* active flag */
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int pm_asn; /* address space number */
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u_int pm_asngen; /* generation number of pm_asn */
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struct pmap_statistics pm_stats; /* pmap statistics */
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struct vm_page *pm_ptphint; /* pmap ptp hint */
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};
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#define pmap_resident_count(pmap) (pmap)->pm_stats.resident_count
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#define PM_FLAG_LOCKED 0x1
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#define PM_FLAG_WANTED 0x2
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typedef struct pmap *pmap_t;
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#ifdef _KERNEL
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extern pmap_t kernel_pmap;
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#endif
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/*
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* For each vm_page_t, there is a list of all currently valid virtual
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* mappings of that page. An entry is a pv_entry_t, the list is pv_table.
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*/
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typedef struct pv_entry {
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struct ia64_lpte pv_pte; /* pte for collision walker */
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pmap_t pv_pmap; /* pmap where mapping lies */
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vm_offset_t pv_va; /* virtual address for mapping */
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TAILQ_ENTRY(pv_entry) pv_list;
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TAILQ_ENTRY(pv_entry) pv_plist;
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} *pv_entry_t;
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#define PV_ENTRY_NULL ((pv_entry_t) 0)
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#ifdef _KERNEL
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extern vm_offset_t avail_end;
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extern vm_offset_t avail_start;
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extern vm_offset_t clean_eva;
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extern vm_offset_t clean_sva;
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extern vm_offset_t phys_avail[];
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extern char *ptvmmap; /* poor name! */
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extern vm_offset_t virtual_avail;
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extern vm_offset_t virtual_end;
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vm_offset_t pmap_steal_memory __P((vm_size_t));
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void pmap_bootstrap __P((void));
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void pmap_setdevram __P((unsigned long long basea, vm_offset_t sizea));
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int pmap_uses_prom_console __P((void));
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pmap_t pmap_kernel __P((void));
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void *pmap_mapdev __P((vm_offset_t, vm_size_t));
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unsigned *pmap_pte __P((pmap_t, vm_offset_t)) __pure2;
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vm_page_t pmap_use_pt __P((pmap_t, vm_offset_t));
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void pmap_set_opt __P((unsigned *));
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void pmap_set_opt_bsp __P((void));
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void pmap_deactivate __P((struct proc *p));
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void pmap_emulate_reference __P((struct proc *p, vm_offset_t v, int user, int write));
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#endif /* _KERNEL */
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#endif /* !LOCORE */
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#endif /* !_MACHINE_PMAP_H_ */
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