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Diffstat (limited to 'sys/powerpc/aim/moea64_if.m')
| -rw-r--r-- | sys/powerpc/aim/moea64_if.m | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/sys/powerpc/aim/moea64_if.m b/sys/powerpc/aim/moea64_if.m new file mode 100644 index 0000000..f041838 --- /dev/null +++ b/sys/powerpc/aim/moea64_if.m @@ -0,0 +1,115 @@ +#- +# Copyright (c) 2010 Nathan Whitehorn +# 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. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. +# +# $FreeBSD$ +# + + +#include <sys/param.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/systm.h> + +#include <vm/vm.h> +#include <vm/vm_page.h> + +#include <machine/mmuvar.h> + +/** + * MOEA64 kobj methods for 64-bit Book-S page table + * manipulation routines used, for example, by hypervisors. + */ + +INTERFACE moea64; + + +/** + * Copy ref/changed bits from PTE referenced by _pt_cookie to _pvo_pt. + */ +METHOD void pte_synch { + mmu_t _mmu; + uintptr_t _pt_cookie; + struct lpte *_pvo_pt; +}; + +/** + * Clear bits ptebit (a mask) from the low word of the PTE referenced by + * _pt_cookie. Note that _pvo_pt is for reference use only -- the bit should + * NOT be cleared there. + */ +METHOD void pte_clear { + mmu_t _mmu; + uintptr_t _pt_cookie; + struct lpte *_pvo_pt; + uint64_t _vpn; + uint64_t _ptebit; +}; + +/** + * Invalidate the PTE referenced by _pt_cookie, synchronizing its validity + * and ref/changed bits after completion. + */ +METHOD void pte_unset { + mmu_t _mmu; + uintptr_t _pt_cookie; + struct lpte *_pvo_pt; + uint64_t _vpn; +}; + +/** + * Update the PTE referenced by _pt_cookie with the values in _pvo_pt, + * making sure that the values of ref/changed bits are preserved and + * synchronized back to _pvo_pt. + */ +METHOD void pte_change { + mmu_t _mmu; + uintptr_t _pt_cookie; + struct lpte *_pvo_pt; + uint64_t _vpn; +}; + + +/** + * Insert the PTE _pvo_pt into the PTEG group _ptegidx, returning the index + * of the PTE in its group at completion, or -1 if no slots were free. Must + * not replace PTEs marked LPTE_WIRED or LPTE_LOCKED, and must set LPTE_HID + * and LPTE_VALID appropriately in _pvo_pt. + */ +METHOD int pte_insert { + mmu_t _mmu; + u_int _ptegidx; + struct lpte *_pvo_pt; +}; + +/** + * Return the page table reference cookie corresponding to _pvo, or -1 if + * the _pvo is not currently in the page table. + */ +METHOD uintptr_t pvo_to_pte { + mmu_t _mmu; + const struct pvo_entry *_pvo; +}; + + |
