1183906Skmacy/* 2183906Skmacy * 3183906Skmacy * Copyright (c) 2004 Christian Limpach. 4183906Skmacy * Copyright (c) 2004,2005 Kip Macy 5183906Skmacy * All rights reserved. 6183906Skmacy * 7183906Skmacy * Redistribution and use in source and binary forms, with or without 8183906Skmacy * modification, are permitted provided that the following conditions 9183906Skmacy * are met: 10183906Skmacy * 1. Redistributions of source code must retain the above copyright 11183906Skmacy * notice, this list of conditions and the following disclaimer. 12183906Skmacy * 2. Redistributions in binary form must reproduce the above copyright 13183906Skmacy * notice, this list of conditions and the following disclaimer in the 14183906Skmacy * documentation and/or other materials provided with the distribution. 15183906Skmacy * 3. All advertising materials mentioning features or use of this software 16183906Skmacy * must display the following acknowledgement: 17183906Skmacy * This product includes software developed by Christian Limpach. 18183906Skmacy * 4. The name of the author may not be used to endorse or promote products 19183906Skmacy * derived from this software without specific prior written permission. 20183906Skmacy * 21183906Skmacy * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22183906Skmacy * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23183906Skmacy * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24183906Skmacy * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25183906Skmacy * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26183906Skmacy * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27183906Skmacy * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28183906Skmacy * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29183906Skmacy * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30183906Skmacy * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31183906Skmacy */ 32183906Skmacy 33183906Skmacy 34183906Skmacy#ifndef _XEN_XENPMAP_H_ 35183906Skmacy#define _XEN_XENPMAP_H_ 36185637Sdfr 37185637Sdfr#include <machine/xen/features.h> 38185637Sdfr 39183906Skmacyvoid _xen_queue_pt_update(vm_paddr_t, vm_paddr_t, char *, int); 40183906Skmacyvoid xen_pt_switch(vm_paddr_t); 41183906Skmacyvoid xen_set_ldt(vm_paddr_t, unsigned long); 42183906Skmacyvoid xen_pgdpt_pin(vm_paddr_t); 43183906Skmacyvoid xen_pgd_pin(vm_paddr_t); 44183906Skmacyvoid xen_pgd_unpin(vm_paddr_t); 45183906Skmacyvoid xen_pt_pin(vm_paddr_t); 46183906Skmacyvoid xen_pt_unpin(vm_paddr_t); 47183906Skmacyvoid xen_flush_queue(void); 48183906Skmacyvoid xen_check_queue(void); 49183906Skmacy#if 0 50183906Skmacyvoid pmap_ref(pt_entry_t *pte, vm_paddr_t ma); 51183906Skmacy#endif 52183906Skmacy 53183906Skmacy#ifdef INVARIANTS 54183906Skmacy#define xen_queue_pt_update(a, b) _xen_queue_pt_update((a), (b), __FILE__, __LINE__) 55183906Skmacy#else 56183906Skmacy#define xen_queue_pt_update(a, b) _xen_queue_pt_update((a), (b), NULL, 0) 57183906Skmacy#endif 58183906Skmacy 59183906Skmacy#ifdef PMAP_DEBUG 60183906Skmacy#define PMAP_REF pmap_ref 61183906Skmacy#define PMAP_DEC_REF_PAGE pmap_dec_ref_page 62183906Skmacy#define PMAP_MARK_PRIV pmap_mark_privileged 63183906Skmacy#define PMAP_MARK_UNPRIV pmap_mark_unprivileged 64183906Skmacy#else 65183906Skmacy#define PMAP_MARK_PRIV(a) 66183906Skmacy#define PMAP_MARK_UNPRIV(a) 67183906Skmacy#define PMAP_REF(a, b) 68183906Skmacy#define PMAP_DEC_REF_PAGE(a) 69183906Skmacy#endif 70183906Skmacy 71183906Skmacy#define ALWAYS_SYNC 0 72183906Skmacy 73183906Skmacy#ifdef PT_DEBUG 74183906Skmacy#define PT_LOG() printk("WP PT_SET %s:%d\n", __FILE__, __LINE__) 75183906Skmacy#else 76183906Skmacy#define PT_LOG() 77183906Skmacy#endif 78183906Skmacy 79183906Skmacy#define INVALID_P2M_ENTRY (~0UL) 80183906Skmacy 81183906Skmacy#define pmap_valid_entry(E) ((E) & PG_V) /* is PDE or PTE valid? */ 82183906Skmacy 83183906Skmacy#define SH_PD_SET_VA 1 84183906Skmacy#define SH_PD_SET_VA_MA 2 85183906Skmacy#define SH_PD_SET_VA_CLEAR 3 86183906Skmacy 87183906Skmacystruct pmap; 88183906Skmacyvoid pd_set(struct pmap *pmap, int ptepindex, vm_paddr_t val, int type); 89183906Skmacy#ifdef notyet 90183906Skmacystatic vm_paddr_t 91183906Skmacyvptetomachpte(vm_paddr_t *pte) 92183906Skmacy{ 93183906Skmacy vm_offset_t offset, ppte; 94183906Skmacy vm_paddr_t pgoffset, retval, *pdir_shadow_ptr; 95183906Skmacy int pgindex; 96183906Skmacy 97183906Skmacy ppte = (vm_offset_t)pte; 98183906Skmacy pgoffset = (ppte & PAGE_MASK); 99183906Skmacy offset = ppte - (vm_offset_t)PTmap; 100183906Skmacy pgindex = ppte >> PDRSHIFT; 101183906Skmacy 102183906Skmacy pdir_shadow_ptr = (vm_paddr_t *)PCPU_GET(pdir_shadow); 103183906Skmacy retval = (pdir_shadow_ptr[pgindex] & ~PAGE_MASK) + pgoffset; 104183906Skmacy return (retval); 105183906Skmacy} 106183906Skmacy#endif 107183906Skmacy#define PT_GET(_ptp) \ 108183906Skmacy (pmap_valid_entry(*(_ptp)) ? xpmap_mtop(*(_ptp)) : (0)) 109183906Skmacy 110183906Skmacy#ifdef WRITABLE_PAGETABLES 111183906Skmacy 112183906Skmacy#define PT_SET_VA(_ptp,_npte,sync) do { \ 113183906Skmacy PMAP_REF((_ptp), xpmap_ptom(_npte)); \ 114183906Skmacy PT_LOG(); \ 115183906Skmacy *(_ptp) = xpmap_ptom((_npte)); \ 116183906Skmacy} while (/*CONSTCOND*/0) 117183906Skmacy#define PT_SET_VA_MA(_ptp,_npte,sync) do { \ 118183906Skmacy PMAP_REF((_ptp), (_npte)); \ 119183906Skmacy PT_LOG(); \ 120183906Skmacy *(_ptp) = (_npte); \ 121183906Skmacy} while (/*CONSTCOND*/0) 122183906Skmacy#define PT_CLEAR_VA(_ptp, sync) do { \ 123183906Skmacy PMAP_REF((pt_entry_t *)(_ptp), 0); \ 124183906Skmacy PT_LOG(); \ 125183906Skmacy *(_ptp) = 0; \ 126183906Skmacy} while (/*CONSTCOND*/0) 127183906Skmacy 128183906Skmacy#define PD_SET_VA(_pmap, _ptp, _npte, sync) do { \ 129183906Skmacy PMAP_REF((_ptp), xpmap_ptom(_npte)); \ 130183906Skmacy pd_set((_pmap),(_ptp),(_npte), SH_PD_SET_VA); \ 131183906Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 132183906Skmacy} while (/*CONSTCOND*/0) 133183906Skmacy#define PD_SET_VA_MA(_pmap, _ptp, _npte, sync) do { \ 134183906Skmacy PMAP_REF((_ptp), (_npte)); \ 135183906Skmacy pd_set((_pmap),(_ptp),(_npte), SH_PD_SET_VA_MA); \ 136183906Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 137183906Skmacy} while (/*CONSTCOND*/0) 138183906Skmacy#define PD_CLEAR_VA(_pmap, _ptp, sync) do { \ 139183906Skmacy PMAP_REF((pt_entry_t *)(_ptp), 0); \ 140183906Skmacy pd_set((_pmap),(_ptp), 0, SH_PD_SET_VA_CLEAR); \ 141183906Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 142183906Skmacy} while (/*CONSTCOND*/0) 143183906Skmacy 144183906Skmacy#else /* !WRITABLE_PAGETABLES */ 145183906Skmacy 146183906Skmacy#define PT_SET_VA(_ptp,_npte,sync) do { \ 147183906Skmacy PMAP_REF((_ptp), xpmap_ptom(_npte)); \ 148183906Skmacy xen_queue_pt_update(vtomach(_ptp), \ 149183906Skmacy xpmap_ptom(_npte)); \ 150183906Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 151183906Skmacy} while (/*CONSTCOND*/0) 152183906Skmacy#define PT_SET_VA_MA(_ptp,_npte,sync) do { \ 153183906Skmacy PMAP_REF((_ptp), (_npte)); \ 154183906Skmacy xen_queue_pt_update(vtomach(_ptp), _npte); \ 155183906Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 156183906Skmacy} while (/*CONSTCOND*/0) 157183906Skmacy#define PT_CLEAR_VA(_ptp, sync) do { \ 158183906Skmacy PMAP_REF((pt_entry_t *)(_ptp), 0); \ 159183906Skmacy xen_queue_pt_update(vtomach(_ptp), 0); \ 160183906Skmacy if (sync || ALWAYS_SYNC) \ 161183906Skmacy xen_flush_queue(); \ 162183906Skmacy} while (/*CONSTCOND*/0) 163183906Skmacy 164183906Skmacy#define PD_SET_VA(_pmap, _ptepindex,_npte,sync) do { \ 165183906Skmacy PMAP_REF((_ptp), xpmap_ptom(_npte)); \ 166183906Skmacy pd_set((_pmap),(_ptepindex),(_npte), SH_PD_SET_VA); \ 167183906Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 168183906Skmacy} while (/*CONSTCOND*/0) 169183906Skmacy#define PD_SET_VA_MA(_pmap, _ptepindex,_npte,sync) do { \ 170183906Skmacy PMAP_REF((_ptp), (_npte)); \ 171183906Skmacy pd_set((_pmap),(_ptepindex),(_npte), SH_PD_SET_VA_MA); \ 172183906Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 173183906Skmacy} while (/*CONSTCOND*/0) 174183906Skmacy#define PD_CLEAR_VA(_pmap, _ptepindex, sync) do { \ 175183906Skmacy PMAP_REF((pt_entry_t *)(_ptp), 0); \ 176183906Skmacy pd_set((_pmap),(_ptepindex), 0, SH_PD_SET_VA_CLEAR); \ 177183906Skmacy if (sync || ALWAYS_SYNC) xen_flush_queue(); \ 178183906Skmacy} while (/*CONSTCOND*/0) 179183906Skmacy 180183906Skmacy#endif 181183906Skmacy 182183906Skmacy#define PT_SET_MA(_va, _ma) \ 183183906Skmacydo { \ 184183906Skmacy PANIC_IF(HYPERVISOR_update_va_mapping(((unsigned long)(_va)),\ 185183906Skmacy (_ma), \ 186183906Skmacy UVMF_INVLPG| UVMF_ALL) < 0); \ 187183906Skmacy} while (/*CONSTCOND*/0) 188183906Skmacy 189183906Skmacy#define PT_UPDATES_FLUSH() do { \ 190183906Skmacy xen_flush_queue(); \ 191183906Skmacy} while (/*CONSTCOND*/0) 192183906Skmacy 193183906Skmacystatic __inline vm_paddr_t 194183906Skmacyxpmap_mtop(vm_paddr_t mpa) 195183906Skmacy{ 196183906Skmacy vm_paddr_t tmp = (mpa & PG_FRAME); 197183906Skmacy 198183906Skmacy return machtophys(tmp) | (mpa & ~PG_FRAME); 199183906Skmacy} 200183906Skmacy 201183906Skmacystatic __inline vm_paddr_t 202183906Skmacyxpmap_ptom(vm_paddr_t ppa) 203183906Skmacy{ 204183906Skmacy vm_paddr_t tmp = (ppa & PG_FRAME); 205183906Skmacy 206183906Skmacy return phystomach(tmp) | (ppa & ~PG_FRAME); 207183906Skmacy} 208183906Skmacy 209183906Skmacystatic __inline void 210183906Skmacyset_phys_to_machine(unsigned long pfn, unsigned long mfn) 211183906Skmacy{ 212183906Skmacy#ifdef notyet 213183906Skmacy PANIC_IF(max_mapnr && pfn >= max_mapnr); 214183906Skmacy#endif 215183906Skmacy if (xen_feature(XENFEAT_auto_translated_physmap)) { 216183906Skmacy#ifdef notyet 217183906Skmacy PANIC_IF((pfn != mfn && mfn != INVALID_P2M_ENTRY)); 218183906Skmacy#endif 219183906Skmacy return; 220183906Skmacy } 221183906Skmacy xen_phys_machine[pfn] = mfn; 222183906Skmacy} 223183906Skmacy 224183906Skmacy 225183906Skmacy 226183906Skmacy 227183906Skmacy#endif /* _XEN_XENPMAP_H_ */ 228