67 lines
2.5 KiB
C
67 lines
2.5 KiB
C
/* $NetBSD: pmap_devmap.h,v 1.1 2023/04/20 08:28:02 skrll Exp $ */
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/*-
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* Copyright (c) 2022 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 Nick Hudson
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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 _UVM_PMAP_DEVMAP_H_
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#define _UVM_PMAP_DEVMAP_H_
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typedef struct pmap_devmap {
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vaddr_t pd_va; /* virtual address */
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paddr_t pd_pa; /* physical address */
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psize_t pd_size; /* size of region */
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vm_prot_t pd_prot; /* protection code */
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u_int pd_flags; /* flags for pmap_kenter_{pa,range} */
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} pmap_devmap_t;
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bool pmap_devmap_bootstrapped_p(void);
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void pmap_devmap_register(const struct pmap_devmap *);
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void pmap_devmap_bootstrap(vaddr_t, const struct pmap_devmap *);
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vaddr_t pmap_devmap_root(void);
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const struct pmap_devmap *pmap_devmap_find_pa(paddr_t, psize_t);
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const struct pmap_devmap *pmap_devmap_find_va(vaddr_t, vsize_t);
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#define DEVMAP_ENTRY_FLAGS(va, pa, sz, fl) \
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{ \
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.pd_va = DEVMAP_ALIGN(va), \
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.pd_pa = DEVMAP_ALIGN(pa), \
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.pd_size = DEVMAP_SIZE(sz), \
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.pd_prot = VM_PROT_READ | VM_PROT_WRITE, \
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.pd_flags = (fl), \
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}
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#define DEVMAP_ENTRY(va, pa, sz) \
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DEVMAP_ENTRY_FLAGS(va, pa, sz, DEVMAP_FLAGS)
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#define DEVMAP_ENTRY_END { 0 }
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#endif /* _UVM_PMAP_DEVMAP_H_ */
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