df57947f08
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. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point. Initially, only tag files that use BSD 4-Clause "Original" license. RelNotes: yes Differential Revision: https://reviews.freebsd.org/D13133
115 lines
3.7 KiB
C
115 lines
3.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (C) 2003
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* Hidetoshi Shimokawa. 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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*
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* This product includes software developed by Hidetoshi Shimokawa.
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*
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* 4. Neither the name of the author nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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struct fwdma_alloc {
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bus_dma_tag_t dma_tag;
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bus_dmamap_t dma_map;
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void *v_addr;
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bus_addr_t bus_addr;
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};
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struct fwdma_seg {
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bus_dmamap_t dma_map;
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void *v_addr;
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bus_addr_t bus_addr;
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};
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struct fwdma_alloc_multi {
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bus_size_t ssize;
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bus_size_t esize;
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int nseg;
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bus_dma_tag_t dma_tag;
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struct fwdma_seg seg[0];
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};
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static __inline void *
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fwdma_v_addr(struct fwdma_alloc_multi *am, int index)
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{
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bus_size_t ssize = am->ssize;
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int offset = am->esize * index;
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return ((caddr_t)am->seg[offset / ssize].v_addr + (offset % ssize));
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}
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static __inline bus_addr_t
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fwdma_bus_addr(struct fwdma_alloc_multi *am, int index)
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{
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bus_size_t ssize = am->ssize;
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int offset = am->esize * index;
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return (am->seg[offset / ssize].bus_addr + (offset % ssize));
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}
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static __inline void
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fwdma_sync(struct fwdma_alloc *dma, bus_dmasync_op_t op)
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{
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bus_dmamap_sync(dma->dma_tag, dma->dma_map, op);
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}
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static __inline void
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fwdma_sync_multiseg(struct fwdma_alloc_multi *am,
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int start, int end, bus_dmasync_op_t op)
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{
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struct fwdma_seg *seg, *eseg;
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seg = &am->seg[am->esize * start / am->ssize];
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eseg = &am->seg[am->esize * end / am->ssize];
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for (; seg <= eseg; seg++)
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bus_dmamap_sync(am->dma_tag, seg->dma_map, op);
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}
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static __inline void
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fwdma_sync_multiseg_all(struct fwdma_alloc_multi *am, bus_dmasync_op_t op)
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{
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struct fwdma_seg *seg;
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int i;
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seg = &am->seg[0];
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for (i = 0; i < am->nseg; i++, seg++)
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bus_dmamap_sync(am->dma_tag, seg->dma_map, op);
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}
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void *fwdma_malloc(struct firewire_comm *, int, bus_size_t, struct fwdma_alloc *, int);
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void fwdma_free(struct firewire_comm *, struct fwdma_alloc *);
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void *fwdma_malloc_size(bus_dma_tag_t, bus_dmamap_t *, bus_size_t, bus_addr_t *, int);
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void fwdma_free_size(bus_dma_tag_t, bus_dmamap_t, void *, bus_size_t);
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struct fwdma_alloc_multi *fwdma_malloc_multiseg(struct firewire_comm *,
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int, int, int, int);
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void fwdma_free_multiseg(struct fwdma_alloc_multi *);
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