Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/tools/bus_space/busdma.h
39475 views
1
/*-

2
 * Copyright (c) 2015 Marcel Moolenaar

3
 * All rights reserved.

4
 *

5
 * Redistribution and use in source and binary forms, with or without

6
 * modification, are permitted provided that the following conditions

7
 * are met:

8
 *

9
 * 1. Redistributions of source code must retain the above copyright

10
 *    notice, this list of conditions and the following disclaimer.

11
 * 2. Redistributions in binary form must reproduce the above copyright

12
 *    notice, this list of conditions and the following disclaimer in the

13
 *    documentation and/or other materials provided with the distribution.

14
 *

15
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

16
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

17
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

18
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

19
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

20
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

21
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

22
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

23
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

24
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

25
 */

26


27
#ifndef _TOOLS_BUS_DMA_H_

28
#define	_TOOLS_BUS_DMA_H_

29


30
int	bd_tag_create(const char *dev, u_long align, u_long bndry,

31
	    u_long maxaddr, u_long maxsz, u_int nsegs, u_long maxsegsz,

32
	    u_int datarate, u_int flags);

33
int	bd_tag_derive(int tid, u_long align, u_long bndry, u_long maxaddr,

34
	    u_long maxsz, u_int nsegs, u_long maxsegsz, u_int datarate,

35
	    u_int flags);

36
int	bd_tag_destroy(int tid);

37


38
int	bd_md_create(int tid, u_int flags);

39
int	bd_md_destroy(int mdid);

40
int	bd_md_load(int mdid, void *buf, u_long len, u_int flags);

41
int	bd_md_unload(int mdid);

42


43
int	bd_mem_alloc(int tid, u_int flags);

44
int	bd_mem_free(int mdid);

45


46
int	bd_md_first_seg(int mdid, int what);

47
int	bd_md_next_seg(int mdid, int sid);

48


49
int	bd_seg_get_addr(int sid, u_long *);

50
int	bd_seg_get_size(int sid, u_long *);

51


52
int	bd_sync(int mdid, u_int op, u_long ofs, u_long len);

53


54
#endif /* _TOOLS_BUS_DMA_H_ */

55


56