2e43efd0bb
Reviewed by: rgrimes MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D19485
118 lines
4.3 KiB
C
118 lines
4.3 KiB
C
/*-
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* Copyright (c) 2015 John H. Baldwin <jhb@FreeBSD.org>
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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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