6ce70ec7f9
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.
83 lines
3.3 KiB
C
83 lines
3.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 1997, 1998 Justin T. Gibbs.
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* Copyright (c) 2002 by Thomas Moestl <tmm@FreeBSD.org>.
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: FreeBSD: src/sys/i386/i386/busdma_machdep.c,v 1.25 2002/01/05
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_BUS_PRIVATE_H_
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#define _MACHINE_BUS_PRIVATE_H_
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#include <sys/queue.h>
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/*
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* Helpers
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*/
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int sparc64_bus_mem_map(bus_space_tag_t tag, bus_addr_t addr, bus_size_t size,
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int flags, vm_offset_t vaddr, bus_space_handle_t *hp);
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int sparc64_bus_mem_unmap(bus_space_tag_t tag, bus_space_handle_t handle,
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bus_size_t size);
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bus_space_tag_t sparc64_alloc_bus_tag(void *cookie, int type);
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bus_space_handle_t sparc64_fake_bustag(int space, bus_addr_t addr,
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struct bus_space_tag *ptag);
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struct bus_dmamap_res {
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struct resource *dr_res;
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bus_size_t dr_used;
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SLIST_ENTRY(bus_dmamap_res) dr_link;
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};
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/*
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* Callers of the bus_dma interfaces must always protect their tags and maps
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* appropriately against concurrent access. However, when a map is on a LRU
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* queue, there is a second access path to it; for this case, the locking rules
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* are given in the parenthesized comments below:
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* q - locked by the mutex protecting the queue.
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* p - private to the owner of the map, no access through the queue.
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* * - comment refers to pointer target.
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* Only the owner of the map is allowed to insert the map into a queue. Removal
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* and repositioning (i.e. temporal removal and reinsertion) is allowed to all
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* if the queue lock is held.
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*/
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struct bus_dmamap {
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TAILQ_ENTRY(bus_dmamap) dm_maplruq; /* (q) */
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SLIST_HEAD(, bus_dmamap_res) dm_reslist; /* (q, *q) */
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int dm_onq; /* (q) */
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int dm_flags; /* (p) */
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};
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/* Flag values */
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#define DMF_LOADED (1 << 0) /* Map is loaded. */
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#define DMF_COHERENT (1 << 1) /* Coherent mapping requested. */
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#define DMF_STREAMED (1 << 2) /* Streaming cache used. */
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int sparc64_dma_alloc_map(bus_dma_tag_t dmat, bus_dmamap_t *mapp);
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void sparc64_dma_free_map(bus_dma_tag_t dmat, bus_dmamap_t map);
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#endif /* !_MACHINE_BUS_PRIVATE_H_ */
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