iommuvar.h revision 1.1 
1/*	$NetBSD: iommuvar.h,v 1.7 2001/07/20 00:07:13 eeh Exp $	*/
2
3/*
4 * Copyright (c) 1999 Matthew R. Green
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#ifndef _SPARC64_DEV_IOMMUVAR_H_
32#define _SPARC64_DEV_IOMMUVAR_H_
33
34/*
35 * per-IOMMU state
36 */
37struct iommu_state {
38	paddr_t			is_ptsb;	/* TSB physical address */
39	int64_t			*is_tsb;	/* TSB virtual address */
40	int			is_tsbsize;	/* 0 = 8K, ... */
41	u_int			is_dvmabase;
42	int64_t			is_cr;		/* IOMMU control regiter value */
43	struct extent		*is_dvmamap;	/* DVMA map for this instance */
44
45	paddr_t			is_flushpa;	/* used to flush the SBUS */
46	/* Needs to be volatile or egcs optimizes away loads */
47	volatile int64_t	is_flush;
48
49	/* copies of our parents state, to allow us to be self contained */
50	bus_space_tag_t		is_bustag;	/* our bus tag */
51	struct iommureg		*is_iommu;	/* IOMMU registers */
52	struct iommu_strbuf	*is_sb;		/* streaming buffer */
53};
54
55/* interfaces for PCI/SBUS code */
56void	iommu_init __P((char *, struct iommu_state *, int, u_int32_t));
57void	iommu_reset __P((struct iommu_state *));
58void    iommu_enter __P((struct iommu_state *, vaddr_t, int64_t, int));
59void    iommu_remove __P((struct iommu_state *, vaddr_t, size_t));
60
61int	iommu_dvmamap_load __P((bus_dma_tag_t, struct iommu_state *,
62	    bus_dmamap_t, void *, bus_size_t, struct proc *, int));
63void	iommu_dvmamap_unload __P((bus_dma_tag_t, struct iommu_state *,
64	    bus_dmamap_t));
65int	iommu_dvmamap_load_raw __P((bus_dma_tag_t, struct iommu_state *,
66	    bus_dmamap_t, bus_dma_segment_t *, int, int, bus_size_t));
67void	iommu_dvmamap_sync __P((bus_dma_tag_t, struct iommu_state *,
68	    bus_dmamap_t, bus_addr_t, bus_size_t, int));
69int	iommu_dvmamem_alloc __P((bus_dma_tag_t, struct iommu_state *,
70	    bus_size_t, bus_size_t, bus_size_t, bus_dma_segment_t *,
71	    int, int *, int));
72void	iommu_dvmamem_free __P((bus_dma_tag_t, struct iommu_state *,
73	    bus_dma_segment_t *, int));
74int	iommu_dvmamem_map __P((bus_dma_tag_t, struct iommu_state *,
75	    bus_dma_segment_t *, int, size_t, caddr_t *, int));
76void	iommu_dvmamem_unmap __P((bus_dma_tag_t, struct iommu_state *,
77	    caddr_t, size_t));
78
79#endif /* _SPARC64_DEV_IOMMUVAR_H_ */
80