c4e20cad00
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
159 lines
3.8 KiB
C
159 lines
3.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2012 EMC Corp.
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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 _SYS_MEMDESC_H_
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#define _SYS_MEMDESC_H_
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struct bio;
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struct bus_dma_segment;
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struct uio;
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struct mbuf;
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union ccb;
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/*
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* struct memdesc encapsulates various memory descriptors and provides
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* abstract access to them.
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*/
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struct memdesc {
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union {
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void *md_vaddr;
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vm_paddr_t md_paddr;
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struct bus_dma_segment *md_list;
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struct bio *md_bio;
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struct uio *md_uio;
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struct mbuf *md_mbuf;
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union ccb *md_ccb;
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} u;
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size_t md_opaque; /* type specific data. */
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uint32_t md_type; /* Type of memory. */
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};
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#define MEMDESC_VADDR 1 /* Contiguous virtual address. */
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#define MEMDESC_PADDR 2 /* Contiguous physical address. */
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#define MEMDESC_VLIST 3 /* scatter/gather list of kva addresses. */
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#define MEMDESC_PLIST 4 /* scatter/gather list of physical addresses. */
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#define MEMDESC_BIO 5 /* Pointer to a bio (block io). */
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#define MEMDESC_UIO 6 /* Pointer to a uio (any io). */
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#define MEMDESC_MBUF 7 /* Pointer to a mbuf (network io). */
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#define MEMDESC_CCB 8 /* Cam control block. (scsi/ata io). */
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static inline struct memdesc
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memdesc_vaddr(void *vaddr, size_t len)
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{
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struct memdesc mem;
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mem.u.md_vaddr = vaddr;
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mem.md_opaque = len;
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mem.md_type = MEMDESC_VADDR;
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return (mem);
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}
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static inline struct memdesc
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memdesc_paddr(vm_paddr_t paddr, size_t len)
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{
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struct memdesc mem;
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mem.u.md_paddr = paddr;
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mem.md_opaque = len;
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mem.md_type = MEMDESC_PADDR;
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return (mem);
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}
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static inline struct memdesc
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memdesc_vlist(struct bus_dma_segment *vlist, int sglist_cnt)
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{
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struct memdesc mem;
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mem.u.md_list = vlist;
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mem.md_opaque = sglist_cnt;
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mem.md_type = MEMDESC_VLIST;
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return (mem);
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}
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static inline struct memdesc
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memdesc_plist(struct bus_dma_segment *plist, int sglist_cnt)
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{
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struct memdesc mem;
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mem.u.md_list = plist;
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mem.md_opaque = sglist_cnt;
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mem.md_type = MEMDESC_PLIST;
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return (mem);
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}
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static inline struct memdesc
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memdesc_bio(struct bio *bio)
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{
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struct memdesc mem;
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mem.u.md_bio = bio;
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mem.md_type = MEMDESC_BIO;
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return (mem);
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}
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static inline struct memdesc
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memdesc_uio(struct uio *uio)
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{
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struct memdesc mem;
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mem.u.md_uio = uio;
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mem.md_type = MEMDESC_UIO;
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return (mem);
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}
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static inline struct memdesc
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memdesc_mbuf(struct mbuf *mbuf)
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{
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struct memdesc mem;
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mem.u.md_mbuf = mbuf;
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mem.md_type = MEMDESC_MBUF;
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return (mem);
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}
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static inline struct memdesc
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memdesc_ccb(union ccb *ccb)
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{
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struct memdesc mem;
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mem.u.md_ccb = ccb;
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mem.md_type = MEMDESC_CCB;
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return (mem);
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}
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#endif /* _SYS_MEMDESC_H_ */
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