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https://github.com/freebsd/freebsd-src
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c9057838be
This API allows callers to enumerate all known pages, including any direct map & kernel map virtual addresses, physical addresses, size, offset into the core, & protection configured. For architectures that support direct map addresses, also generate pages for any direct map only addresses that are not associated with kernel map addresses. Fix page size portability issue left behind from previous kvm page table lookup interface. Reviewed by: jhb Sponsored by: Backtrace I/O Differential Revision: https://reviews.freebsd.org/D12279
119 lines
4.4 KiB
C
119 lines
4.4 KiB
C
/*-
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* Copyright (c) 2015 John H. Baldwin <jhb@FreeBSD.org>
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*/
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#ifndef __KVM_MIPS_H__
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#define __KVM_MIPS_H__
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#ifdef __mips__
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#include <machine/pte.h>
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#endif
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typedef uint64_t mips_physaddr_t;
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typedef uint32_t mips32_pte_t;
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typedef uint64_t mips64_pte_t;
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#define MIPS_PAGE_SHIFT 12
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#define MIPS_PAGE_SIZE (1 << MIPS_PAGE_SHIFT)
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#define MIPS_PAGE_MASK (MIPS_PAGE_SIZE - 1)
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#define MIPS32_KSEG0_START 0x80000000
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#define MIPS32_KSEG0_END 0x9fffffff
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#define MIPS32_KSEG1_START 0xa0000000
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#define MIPS32_KSEG1_END 0xbfffffff
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#define MIPS64_KSEG0_START 0xffffffff80000000
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#define MIPS64_KSEG0_END 0xffffffff9fffffff
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#define MIPS64_KSEG1_START 0xffffffffa0000000
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#define MIPS64_KSEG1_END 0xffffffffbfffffff
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#define MIPS32_PFN_MASK (0x1FFFFFC0)
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#define MIPS64_PFN_MASK 0x3FFFFFFC0
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#define MIPS_PFN_SHIFT (6)
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#define MIPS_PFN_TO_PA(pfn) (((pfn) >> MIPS_PFN_SHIFT) << MIPS_PAGE_SHIFT)
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#define MIPS32_PTE_TO_PFN(pte) ((pte) & MIPS32_PFN_MASK)
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#define MIPS32_PTE_TO_PA(pte) (MIPS_PFN_TO_PA(MIPS32_PTE_TO_PFN((pte))))
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#define MIPS64_PTE_TO_PFN(pte) ((pte) & MIPS64_PFN_MASK)
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#define MIPS64_PTE_TO_PA(pte) (MIPS_PFN_TO_PA(MIPS64_PTE_TO_PFN((pte))))
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#define MIPS32_SWBITS_SHIFT 29
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#define MIPS64_SWBITS_SHIFT 55
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#define MIPS_PTE_V 0x02
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#define MIPS32_PTE_RO ((mips32_pte_t)0x01 << MIPS32_SWBITS_SHIFT)
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#define MIPS64_PTE_RO ((mips64_pte_t)0x01 << MIPS64_SWBITS_SHIFT)
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static inline mips32_pte_t
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_mips32_pte_get(kvm_t *kd, u_long pteindex)
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{
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mips32_pte_t *pte = _kvm_pmap_get(kd, pteindex, sizeof(*pte));
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return _kvm32toh(kd, *pte);
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}
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static inline mips64_pte_t
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_mips64_pte_get(kvm_t *kd, u_long pteindex)
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{
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mips64_pte_t *pte = _kvm_pmap_get(kd, pteindex, sizeof(*pte));
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return _kvm64toh(kd, *pte);
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}
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#ifdef __mips__
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_Static_assert(PAGE_SHIFT == MIPS_PAGE_SHIFT, "PAGE_SHIFT mismatch");
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_Static_assert(PAGE_SIZE == MIPS_PAGE_SIZE, "PAGE_SIZE mismatch");
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_Static_assert(PAGE_MASK == MIPS_PAGE_MASK, "PAGE_MASK mismatch");
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#ifdef __mips_n64
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_Static_assert((uint64_t)MIPS_KSEG0_START == MIPS64_KSEG0_START,
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"MIPS_KSEG0_START mismatch");
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_Static_assert((uint64_t)MIPS_KSEG0_END == MIPS64_KSEG0_END,
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"MIPS_KSEG0_END mismatch");
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_Static_assert((uint64_t)MIPS_KSEG1_START == MIPS64_KSEG1_START,
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"MIPS_KSEG1_START mismatch");
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_Static_assert((uint64_t)MIPS_KSEG1_END == MIPS64_KSEG1_END,
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"MIPS_KSEG1_END mismatch");
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#else
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_Static_assert((uint32_t)MIPS_KSEG0_START == MIPS32_KSEG0_START,
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"MIPS_KSEG0_START mismatch");
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_Static_assert((uint32_t)MIPS_KSEG0_END == MIPS32_KSEG0_END,
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"MIPS_KSEG0_END mismatch");
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_Static_assert((uint32_t)MIPS_KSEG1_START == MIPS32_KSEG1_START,
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"MIPS_KSEG1_START mismatch");
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_Static_assert((uint32_t)MIPS_KSEG1_END == MIPS32_KSEG1_END,
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"MIPS_KSEG1_END mismatch");
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#endif
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#if defined(__mips_n64) || defined(__mips_n32)
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_Static_assert(TLBLO_PFN_MASK == MIPS64_PFN_MASK, "TLBLO_PFN_MASK mismatch");
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#else
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_Static_assert(TLBLO_PFN_MASK == MIPS32_PFN_MASK, "TLBLO_PFN_MASK mismatch");
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#endif
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_Static_assert(TLBLO_PFN_SHIFT == MIPS_PFN_SHIFT, "TLBLO_PFN_SHIFT mismatch");
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_Static_assert(TLB_PAGE_SHIFT == MIPS_PAGE_SHIFT, "TLB_PAGE_SHIFT mismatch");
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#endif
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#endif /* !__KVM_MIPS_H__ */
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