015b858345
base and size parameters to ofs and len (resp). Add a new busdma_sync() that makes the entire MD coherent.
85 lines
3.2 KiB
C
85 lines
3.2 KiB
C
/*-
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* Copyright (c) 2014, 2015 Marcel Moolenaar
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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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*
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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 BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LIBBUS_SPACE_H_
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#define _LIBBUS_SPACE_H_
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int bus_map(const char *dev, const char *resource);
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int16_t bus_read_1(int rid, long ofs);
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int32_t bus_read_2(int rid, long ofs);
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int64_t bus_read_4(int rid, long ofs);
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int bus_subregion(int rid, long ofs, long sz);
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int bus_unmap(int rid);
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int bus_write_1(int rid, long ofs, uint8_t val);
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int bus_write_2(int rid, long ofs, uint16_t val);
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int bus_write_4(int rid, long ofs, uint32_t val);
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typedef unsigned long bus_addr_t;
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typedef unsigned long bus_size_t;
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typedef int busdma_tag_t;
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typedef int busdma_md_t;
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typedef int busdma_seg_t;
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int busdma_tag_create(const char *dev, bus_addr_t align, bus_addr_t bndry,
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bus_addr_t maxaddr, bus_size_t maxsz, u_int nsegs,
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bus_size_t maxsegsz, u_int datarate, u_int flags,
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busdma_tag_t *out_p);
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int busdma_tag_derive(busdma_tag_t tag, bus_addr_t align, bus_addr_t bndry,
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bus_addr_t maxaddr, bus_size_t maxsz, u_int nsegs,
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bus_size_t maxsegsz, u_int datarate, u_int flags,
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busdma_tag_t *out_p);
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int busdma_tag_destroy(busdma_tag_t tag);
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int busdma_mem_alloc(busdma_tag_t tag, u_int flags, busdma_md_t *out_p);
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int busdma_mem_free(busdma_md_t md);
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int busdma_md_create(busdma_tag_t tag, u_int flags, busdma_md_t *out_p);
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int busdma_md_destroy(busdma_md_t md);
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int busdma_md_load(busdma_md_t md, void *buf, size_t len, u_int flags);
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int busdma_md_unload(busdma_md_t md);
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#define BUSDMA_MD_BUS_SPACE 0
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#define BUSDMA_MD_PHYS_SPACE 1
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#define BUSDMA_MD_VIRT_SPACE 2
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int busdma_md_first_seg(busdma_md_t, int space);
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int busdma_md_next_seg(busdma_md_t, busdma_seg_t seg);
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bus_addr_t busdma_seg_get_addr(busdma_seg_t seg);
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bus_size_t busdma_seg_get_size(busdma_seg_t seg);
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#define BUSDMA_SYNC_PREREAD 1
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#define BUSDMA_SYNC_POSTREAD 2
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#define BUSDMA_SYNC_PREWRITE 4
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#define BUSDMA_SYNC_POSTWRITE 8
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int busdma_sync(busdma_md_t md, int op);
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int busdma_sync_range(busdma_md_t md, int op, bus_size_t, bus_size_t);
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#endif /* _LIBBUS_SPACE_H_ */
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