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60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/* $NetBSD: page.h,v 1.2 2014/07/16 20:59:58 riastradh Exp $ */
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/*-
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* Copyright (c) 2014 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Taylor R. Campbell.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _ASM_PAGE_H_
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#define _ASM_PAGE_H_
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#include <sys/bus.h>
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#include <uvm/uvm_page.h>
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#include <linux/mm_types.h>
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/*
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* XXX Not sure why this is here, but so it is in Linux... Also, not
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* sure what the right type is: Linux uses dma_addr_t, but I don't
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* think bus_addr_t is right here -- paddr_t sounds more appropriate.
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*/
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static inline bus_addr_t
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page_to_phys(struct page *page)
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{
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return VM_PAGE_TO_PHYS(&page->p_vmp);
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}
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static inline unsigned long
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page_to_pfn(struct page *page)
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{
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return (page_to_phys(page) >> PAGE_SHIFT);
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}
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#endif /* _ASM_PAGE_H_ */
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