xenpmap.h revision 189699
1181638Skmacy/* 2181638Skmacy * 3181638Skmacy * Copyright (c) 2004 Christian Limpach. 4181638Skmacy * Copyright (c) 2004,2005 Kip Macy 5181638Skmacy * All rights reserved. 6181638Skmacy * 7181638Skmacy * Redistribution and use in source and binary forms, with or without 8181638Skmacy * modification, are permitted provided that the following conditions 9181638Skmacy * are met: 10181638Skmacy * 1. Redistributions of source code must retain the above copyright 11181638Skmacy * notice, this list of conditions and the following disclaimer. 12181638Skmacy * 2. Redistributions in binary form must reproduce the above copyright 13181638Skmacy * notice, this list of conditions and the following disclaimer in the 14181638Skmacy * documentation and/or other materials provided with the distribution. 15181638Skmacy * 3. All advertising materials mentioning features or use of this software 16181638Skmacy * must display the following acknowledgement: 17181638Skmacy * This product includes software developed by Christian Limpach. 18181638Skmacy * 4. The name of the author may not be used to endorse or promote products 19181638Skmacy * derived from this software without specific prior written permission. 20181638Skmacy * 21181638Skmacy * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22181638Skmacy * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23181638Skmacy * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24181638Skmacy * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25181638Skmacy * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26181638Skmacy * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27181638Skmacy * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28181638Skmacy * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29181638Skmacy * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30181638Skmacy * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31181638Skmacy * 32181638Skmacy * 33181638Skmacy * $FreeBSD: head/sys/i386/include/xen/xenpmap.h 189699 2009-03-11 15:30:12Z dfr $ 34181638Skmacy */ 35181638Skmacy 36181638Skmacy#ifndef _XEN_XENPMAP_H_ 37181638Skmacy#define _XEN_XENPMAP_H_ 38181638Skmacyvoid _xen_queue_pt_update(vm_paddr_t, vm_paddr_t, char *, int); 39181638Skmacyvoid xen_pt_switch(vm_paddr_t); 40181638Skmacyvoid xen_set_ldt(vm_paddr_t, unsigned long); 41181638Skmacyvoid xen_pgdpt_pin(vm_paddr_t); 42181638Skmacyvoid xen_pgd_pin(vm_paddr_t); 43181638Skmacyvoid xen_pgd_unpin(vm_paddr_t); 44181638Skmacyvoid xen_pt_pin(vm_paddr_t); 45181638Skmacyvoid xen_pt_unpin(vm_paddr_t); 46181638Skmacyvoid xen_flush_queue(void); 47181638Skmacyvoid pmap_ref(pt_entry_t *pte, vm_paddr_t ma); 48181638Skmacyvoid xen_check_queue(void); 49181638Skmacy 50181638Skmacy#ifdef INVARIANTS 51181638Skmacy#define xen_queue_pt_update(a, b) _xen_queue_pt_update((a), (b), __FILE__, __LINE__) 52181638Skmacy#else 53181638Skmacy#define xen_queue_pt_update(a, b) _xen_queue_pt_update((a), (b), NULL, 0) 54181638Skmacy#endif 55181638Skmacy 56181638Skmacy 57181638Skmacy#include <sys/param.h> 58181638Skmacy#include <sys/pcpu.h> 59181638Skmacy 60181638Skmacy#ifdef PMAP_DEBUG 61181638Skmacy#define PMAP_REF pmap_ref 62181638Skmacy#define PMAP_DEC_REF_PAGE pmap_dec_ref_page 63181638Skmacy#define PMAP_MARK_PRIV pmap_mark_privileged 64181638Skmacy#define PMAP_MARK_UNPRIV pmap_mark_unprivileged 65181638Skmacy#else 66181638Skmacy#define PMAP_MARK_PRIV(a) 67181638Skmacy#define PMAP_MARK_UNPRIV(a) 68181638Skmacy#define PMAP_REF(a, b) 69181638Skmacy#define PMAP_DEC_REF_PAGE(a) 70181638Skmacy#endif 71181638Skmacy 72181638Skmacy#define ALWAYS_SYNC 0 73181638Skmacy 74181638Skmacy#ifdef PT_DEBUG 75181638Skmacy#define PT_LOG() printk("WP PT_SET %s:%d\n", __FILE__, __LINE__) 76181638Skmacy#else 77181638Skmacy#define PT_LOG() 78181638Skmacy#endif 79181638Skmacy 80181638Skmacy#define INVALID_P2M_ENTRY (~0UL) 81181638Skmacy 82181638Skmacy#define pmap_valid_entry(E) ((E) & PG_V) /* is PDE or PTE valid? */ 83181638Skmacy 84181638Skmacy#define SH_PD_SET_VA 1 85181638Skmacy#define SH_PD_SET_VA_MA 2 86181638Skmacy#define SH_PD_SET_VA_CLEAR 3 87181638Skmacy 88181638Skmacystruct pmap; 89181638Skmacyvoid pd_set(struct pmap *pmap, int ptepindex, vm_paddr_t val, int type); 90181638Skmacy#ifdef notyet 91181638Skmacystatic vm_paddr_t 92181638Skmacyvptetomachpte(vm_paddr_t *pte) 93181638Skmacy{ 94181638Skmacy vm_offset_t offset, ppte; 95181638Skmacy vm_paddr_t pgoffset, retval, *pdir_shadow_ptr; 96181638Skmacy int pgindex; 97181638Skmacy 98181638Skmacy ppte = (vm_offset_t)pte; 99181638Skmacy pgoffset = (ppte & PAGE_MASK); 100181638Skmacy offset = ppte - (vm_offset_t)PTmap; 101181638Skmacy pgindex = ppte >> PDRSHIFT; 102181638Skmacy 103181638Skmacy pdir_shadow_ptr = (vm_paddr_t *)PCPU_GET(pdir_shadow); 104181638Skmacy retval = (pdir_shadow_ptr[pgindex] & ~PAGE_MASK) + pgoffset; 105181638Skmacy return (retval); 106181638Skmacy} 107181638Skmacy#endif 108181638Skmacy#define PT_GET(_ptp) \ 109181638Skmacy (pmap_valid_entry(*(_ptp)) ? xpmap_mtop(*(_ptp)) : (0)) 110181638Skmacy 111181638Skmacy#ifdef WRITABLE_PAGETABLES 112181638Skmacy 113181638Skmacy#define PT_SET_VA(_ptp,_npte,sync) do { \ 114181638Skmacy PMAP_REF((_ptp), xpmap_ptom(_npte)); \ 115181638Skmacy PT_LOG(); \ 116181638Skmacy *(_ptp) = xpmap_ptom((_npte)); \ 117181638Skmacy} while (/*CONSTCOND*/0) 118181638Skmacy#define PT_SET_VA_MA(_ptp,_npte,sync) do { \ 119181638Skmacy PMAP_REF((_ptp), (_npte)); \ 120181638Skmacy PT_LOG(); \ 121181638Skmacy *(_ptp) = (_npte); \ 122181638Skmacy} while (/*CONSTCOND*/0) 123181638Skmacy#define PT_CLEAR_VA(_ptp, sync) do { \ 124181638Skmacy PMAP_REF((pt_entry_t *)(_ptp), 0); \ 125181638Skmacy PT_LOG(); \ 126181638Skmacy *(_ptp) = 0; \ 127181638Skmacy} while (/*CONSTCOND*/0) 128181638Skmacy 129181638Skmacy#define PD_SET_VA(_pmap, _ptp, _npte, sync) do { \ 130181638Skmacy PMAP_REF((_ptp), xpmap_ptom(_npte)); \ 131181638Skmacy pd_set((_pmap),(_ptp),(_npte), SH_PD_SET_VA); \ 132181638Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 133181638Skmacy} while (/*CONSTCOND*/0) 134181638Skmacy#define PD_SET_VA_MA(_pmap, _ptp, _npte, sync) do { \ 135181638Skmacy PMAP_REF((_ptp), (_npte)); \ 136181638Skmacy pd_set((_pmap),(_ptp),(_npte), SH_PD_SET_VA_MA); \ 137181638Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 138181638Skmacy} while (/*CONSTCOND*/0) 139181638Skmacy#define PD_CLEAR_VA(_pmap, _ptp, sync) do { \ 140181638Skmacy PMAP_REF((pt_entry_t *)(_ptp), 0); \ 141181638Skmacy pd_set((_pmap),(_ptp), 0, SH_PD_SET_VA_CLEAR); \ 142181638Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 143181638Skmacy} while (/*CONSTCOND*/0) 144181638Skmacy 145181638Skmacy#else /* !WRITABLE_PAGETABLES */ 146181638Skmacy 147181638Skmacy#define PT_SET_VA(_ptp,_npte,sync) do { \ 148181638Skmacy PMAP_REF((_ptp), xpmap_ptom(_npte)); \ 149181638Skmacy xen_queue_pt_update(vtomach(_ptp), \ 150181638Skmacy xpmap_ptom(_npte)); \ 151181638Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 152181638Skmacy} while (/*CONSTCOND*/0) 153181638Skmacy#define PT_SET_VA_MA(_ptp,_npte,sync) do { \ 154181638Skmacy PMAP_REF((_ptp), (_npte)); \ 155181638Skmacy xen_queue_pt_update(vtomach(_ptp), _npte); \ 156181638Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 157181638Skmacy} while (/*CONSTCOND*/0) 158181638Skmacy#define PT_CLEAR_VA(_ptp, sync) do { \ 159181638Skmacy PMAP_REF((pt_entry_t *)(_ptp), 0); \ 160181638Skmacy xen_queue_pt_update(vtomach(_ptp), 0); \ 161181638Skmacy if (sync || ALWAYS_SYNC) \ 162181638Skmacy xen_flush_queue(); \ 163181638Skmacy} while (/*CONSTCOND*/0) 164181638Skmacy 165181638Skmacy#define PD_SET_VA(_pmap, _ptepindex,_npte,sync) do { \ 166181638Skmacy PMAP_REF((_ptp), xpmap_ptom(_npte)); \ 167181638Skmacy pd_set((_pmap),(_ptepindex),(_npte), SH_PD_SET_VA); \ 168181638Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 169181638Skmacy} while (/*CONSTCOND*/0) 170181638Skmacy#define PD_SET_VA_MA(_pmap, _ptepindex,_npte,sync) do { \ 171181638Skmacy PMAP_REF((_ptp), (_npte)); \ 172181638Skmacy pd_set((_pmap),(_ptepindex),(_npte), SH_PD_SET_VA_MA); \ 173181638Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 174181638Skmacy} while (/*CONSTCOND*/0) 175181638Skmacy#define PD_CLEAR_VA(_pmap, _ptepindex, sync) do { \ 176181638Skmacy PMAP_REF((pt_entry_t *)(_ptp), 0); \ 177181638Skmacy pd_set((_pmap),(_ptepindex), 0, SH_PD_SET_VA_CLEAR); \ 178181638Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 179181638Skmacy} while (/*CONSTCOND*/0) 180181638Skmacy 181181638Skmacy#endif 182181638Skmacy 183181638Skmacy#define PT_SET_MA(_va, _ma) \ 184181638Skmacydo { \ 185181638Skmacy PANIC_IF(HYPERVISOR_update_va_mapping(((unsigned long)(_va)),\ 186181638Skmacy (_ma), \ 187182902Skmacy UVMF_INVLPG| UVMF_ALL) < 0); \ 188181638Skmacy} while (/*CONSTCOND*/0) 189181638Skmacy 190181638Skmacy#define PT_UPDATES_FLUSH() do { \ 191181638Skmacy xen_flush_queue(); \ 192181638Skmacy} while (/*CONSTCOND*/0) 193181638Skmacy 194181638Skmacystatic __inline vm_paddr_t 195181638Skmacyxpmap_mtop(vm_paddr_t mpa) 196181638Skmacy{ 197181638Skmacy vm_paddr_t tmp = (mpa & PG_FRAME); 198181638Skmacy 199181638Skmacy return machtophys(tmp) | (mpa & ~PG_FRAME); 200181638Skmacy} 201181638Skmacy 202181638Skmacystatic __inline vm_paddr_t 203181638Skmacyxpmap_ptom(vm_paddr_t ppa) 204181638Skmacy{ 205181638Skmacy vm_paddr_t tmp = (ppa & PG_FRAME); 206181638Skmacy 207181638Skmacy return phystomach(tmp) | (ppa & ~PG_FRAME); 208181638Skmacy} 209181638Skmacy 210181638Skmacystatic __inline void 211181638Skmacyset_phys_to_machine(unsigned long pfn, unsigned long mfn) 212181638Skmacy{ 213181638Skmacy#ifdef notyet 214181638Skmacy PANIC_IF(max_mapnr && pfn >= max_mapnr); 215181638Skmacy#endif 216181638Skmacy if (xen_feature(XENFEAT_auto_translated_physmap)) { 217181638Skmacy#ifdef notyet 218181638Skmacy PANIC_IF((pfn != mfn && mfn != INVALID_P2M_ENTRY)); 219181638Skmacy#endif 220181638Skmacy return; 221181638Skmacy } 222181638Skmacy xen_phys_machine[pfn] = mfn; 223181638Skmacy} 224181638Skmacy 225189699Sdfrstatic __inline int 226189699Sdfrphys_to_machine_mapping_valid(unsigned long pfn) 227189699Sdfr{ 228189699Sdfr return xen_phys_machine[pfn] != INVALID_P2M_ENTRY; 229189699Sdfr} 230181638Skmacy 231181638Skmacy 232181638Skmacy#endif /* _XEN_XENPMAP_H_ */ 233