diff options
Diffstat (limited to 'sys/i386/include/xen/xenpmap.h')
-rw-r--r-- | sys/i386/include/xen/xenpmap.h | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/sys/i386/include/xen/xenpmap.h b/sys/i386/include/xen/xenpmap.h new file mode 100644 index 0000000..163b780 --- /dev/null +++ b/sys/i386/include/xen/xenpmap.h @@ -0,0 +1,243 @@ +/* + * + * Copyright (c) 2004 Christian Limpach. + * Copyright (c) 2004,2005 Kip Macy + * All rights reserved. + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Christian Limpach. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + * + * + * $FreeBSD$ + */ + +#ifndef _XEN_XENPMAP_H_ +#define _XEN_XENPMAP_H_ +void xen_invlpg(vm_offset_t); +void xen_load_cr3(vm_paddr_t); +void _xen_queue_pt_update(vm_paddr_t, vm_paddr_t, char *, int); +void xen_pt_switch(vm_paddr_t); +void xen_set_ldt(vm_paddr_t, unsigned long); +void xen_tlb_flush(void); +void xen_pgdpt_pin(vm_paddr_t); +void xen_pgd_pin(vm_paddr_t); +void xen_pgd_unpin(vm_paddr_t); +void xen_pt_pin(vm_paddr_t); +void xen_pt_unpin(vm_paddr_t); +void xen_flush_queue(void); +void pmap_ref(pt_entry_t *pte, vm_paddr_t ma); +void xen_check_queue(void); + +#ifdef INVARIANTS +#define xen_queue_pt_update(a, b) _xen_queue_pt_update((a), (b), __FILE__, __LINE__) +#else +#define xen_queue_pt_update(a, b) _xen_queue_pt_update((a), (b), NULL, 0) +#endif + + +#include <sys/param.h> +#include <sys/pcpu.h> + +#ifdef PMAP_DEBUG +#define PMAP_REF pmap_ref +#define PMAP_DEC_REF_PAGE pmap_dec_ref_page +#define PMAP_MARK_PRIV pmap_mark_privileged +#define PMAP_MARK_UNPRIV pmap_mark_unprivileged +#else +#define PMAP_MARK_PRIV(a) +#define PMAP_MARK_UNPRIV(a) +#define PMAP_REF(a, b) +#define PMAP_DEC_REF_PAGE(a) +#endif + +#define ALWAYS_SYNC 0 + +#ifdef PT_DEBUG +#define PT_LOG() printk("WP PT_SET %s:%d\n", __FILE__, __LINE__) +#else +#define PT_LOG() +#endif + +#define INVALID_P2M_ENTRY (~0UL) + +#define pmap_valid_entry(E) ((E) & PG_V) /* is PDE or PTE valid? */ + +#define SH_PD_SET_VA 1 +#define SH_PD_SET_VA_MA 2 +#define SH_PD_SET_VA_CLEAR 3 + +struct pmap; +void pd_set(struct pmap *pmap, int ptepindex, vm_paddr_t val, int type); +#ifdef notyet +static vm_paddr_t +vptetomachpte(vm_paddr_t *pte) +{ + vm_offset_t offset, ppte; + vm_paddr_t pgoffset, retval, *pdir_shadow_ptr; + int pgindex; + + ppte = (vm_offset_t)pte; + pgoffset = (ppte & PAGE_MASK); + offset = ppte - (vm_offset_t)PTmap; + pgindex = ppte >> PDRSHIFT; + + pdir_shadow_ptr = (vm_paddr_t *)PCPU_GET(pdir_shadow); + retval = (pdir_shadow_ptr[pgindex] & ~PAGE_MASK) + pgoffset; + return (retval); +} +#endif +#define PT_GET(_ptp) \ + (pmap_valid_entry(*(_ptp)) ? xpmap_mtop(*(_ptp)) : (0)) + +#ifdef WRITABLE_PAGETABLES + +#define PT_SET_VA(_ptp,_npte,sync) do { \ + PMAP_REF((_ptp), xpmap_ptom(_npte)); \ + PT_LOG(); \ + *(_ptp) = xpmap_ptom((_npte)); \ +} while (/*CONSTCOND*/0) +#define PT_SET_VA_MA(_ptp,_npte,sync) do { \ + PMAP_REF((_ptp), (_npte)); \ + PT_LOG(); \ + *(_ptp) = (_npte); \ +} while (/*CONSTCOND*/0) +#define PT_CLEAR_VA(_ptp, sync) do { \ + PMAP_REF((pt_entry_t *)(_ptp), 0); \ + PT_LOG(); \ + *(_ptp) = 0; \ +} while (/*CONSTCOND*/0) + +#define PD_SET_VA(_pmap, _ptp, _npte, sync) do { \ + PMAP_REF((_ptp), xpmap_ptom(_npte)); \ + pd_set((_pmap),(_ptp),(_npte), SH_PD_SET_VA); \ + if (sync || ALWAYS_SYNC) xen_flush_queue(); \ +} while (/*CONSTCOND*/0) +#define PD_SET_VA_MA(_pmap, _ptp, _npte, sync) do { \ + PMAP_REF((_ptp), (_npte)); \ + pd_set((_pmap),(_ptp),(_npte), SH_PD_SET_VA_MA); \ + if (sync || ALWAYS_SYNC) xen_flush_queue(); \ +} while (/*CONSTCOND*/0) +#define PD_CLEAR_VA(_pmap, _ptp, sync) do { \ + PMAP_REF((pt_entry_t *)(_ptp), 0); \ + pd_set((_pmap),(_ptp), 0, SH_PD_SET_VA_CLEAR); \ + if (sync || ALWAYS_SYNC) xen_flush_queue(); \ +} while (/*CONSTCOND*/0) + +#else /* !WRITABLE_PAGETABLES */ + +#define PT_SET_VA(_ptp,_npte,sync) do { \ + PMAP_REF((_ptp), xpmap_ptom(_npte)); \ + xen_queue_pt_update(vtomach(_ptp), \ + xpmap_ptom(_npte)); \ + if (sync || ALWAYS_SYNC) xen_flush_queue(); \ +} while (/*CONSTCOND*/0) +#define PT_SET_VA_MA(_ptp,_npte,sync) do { \ + PMAP_REF((_ptp), (_npte)); \ + xen_queue_pt_update(vtomach(_ptp), _npte); \ + if (sync || ALWAYS_SYNC) xen_flush_queue(); \ +} while (/*CONSTCOND*/0) +#define PT_CLEAR_VA(_ptp, sync) do { \ + PMAP_REF((pt_entry_t *)(_ptp), 0); \ + xen_queue_pt_update(vtomach(_ptp), 0); \ + if (sync || ALWAYS_SYNC) \ + xen_flush_queue(); \ +} while (/*CONSTCOND*/0) + +#define PD_SET_VA(_pmap, _ptepindex,_npte,sync) do { \ + PMAP_REF((_ptp), xpmap_ptom(_npte)); \ + pd_set((_pmap),(_ptepindex),(_npte), SH_PD_SET_VA); \ + if (sync || ALWAYS_SYNC) xen_flush_queue(); \ +} while (/*CONSTCOND*/0) +#define PD_SET_VA_MA(_pmap, _ptepindex,_npte,sync) do { \ + PMAP_REF((_ptp), (_npte)); \ + pd_set((_pmap),(_ptepindex),(_npte), SH_PD_SET_VA_MA); \ + if (sync || ALWAYS_SYNC) xen_flush_queue(); \ +} while (/*CONSTCOND*/0) +#define PD_CLEAR_VA(_pmap, _ptepindex, sync) do { \ + PMAP_REF((pt_entry_t *)(_ptp), 0); \ + pd_set((_pmap),(_ptepindex), 0, SH_PD_SET_VA_CLEAR); \ + if (sync || ALWAYS_SYNC) xen_flush_queue(); \ +} while (/*CONSTCOND*/0) + +#endif + +#ifdef PAE +#define PT_SET_MA(_va, _ma) \ +do { \ + PANIC_IF(HYPERVISOR_update_va_mapping(((unsigned long)(_va)),\ + (_ma), \ + UVMF_INVLPG| UVMF_LOCAL) < 0); \ +} while (/*CONSTCOND*/0) + +#else + +#define PT_SET_MA(_va, _ma) \ +do { \ + PANIC_IF(HYPERVISOR_update_va_mapping(((unsigned long)(_va)),\ + (_ma), \ + UVMF_INVLPG| UVMF_LOCAL) < 0); \ +} while (/*CONSTCOND*/0) + +#endif + +#define PT_UPDATES_FLUSH() do { \ + xen_flush_queue(); \ +} while (/*CONSTCOND*/0) + +static __inline vm_paddr_t +xpmap_mtop(vm_paddr_t mpa) +{ + vm_paddr_t tmp = (mpa & PG_FRAME); + + return machtophys(tmp) | (mpa & ~PG_FRAME); +} + +static __inline vm_paddr_t +xpmap_ptom(vm_paddr_t ppa) +{ + vm_paddr_t tmp = (ppa & PG_FRAME); + + return phystomach(tmp) | (ppa & ~PG_FRAME); +} + +static __inline void +set_phys_to_machine(unsigned long pfn, unsigned long mfn) +{ +#ifdef notyet + PANIC_IF(max_mapnr && pfn >= max_mapnr); +#endif + if (xen_feature(XENFEAT_auto_translated_physmap)) { +#ifdef notyet + PANIC_IF((pfn != mfn && mfn != INVALID_P2M_ENTRY)); +#endif + return; + } + xen_phys_machine[pfn] = mfn; +} + + + + +#endif /* _XEN_XENPMAP_H_ */ |