1/*	$NetBSD: uhavar.h,v 1.15 2008/04/28 20:23:51 martin Exp $	*/
2
3/*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
9 * Simulation Facility, NASA Ames Research Center.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/queue.h>
34
35#define UHA_MSCP_MAX	32	/* store up to 32 MSCPs at one time */
36#define	MSCP_HASH_SIZE	32	/* hash table size for phystokv */
37#define	MSCP_HASH_SHIFT	9
38#define MSCP_HASH(x)	((((long)(x))>>MSCP_HASH_SHIFT) & (MSCP_HASH_SIZE - 1))
39
40struct uha_softc {
41	device_t sc_dev;
42
43	bus_space_tag_t sc_iot;
44	bus_space_handle_t sc_ioh;
45	bus_dma_tag_t	sc_dmat;
46	void *sc_ih;
47
48	int sc_dmaflags;	/* bus-specific DMA map creation flags */
49
50	void (*start_mbox)(struct uha_softc *, struct uha_mscp *);
51	int (*poll)(struct uha_softc *, struct scsipi_xfer *, int);
52	void (*init)(struct uha_softc *);
53
54	bus_dmamap_t sc_dmamap_mscp;	/* maps the mscps */
55	struct uha_mscp *sc_mscps;	/* all our mscps */
56
57	struct uha_mscp *sc_mscphash[MSCP_HASH_SIZE];
58	TAILQ_HEAD(, uha_mscp) sc_free_mscp;
59	int sc_nummscps;
60
61	struct scsipi_adapter sc_adapter;
62	struct scsipi_channel sc_channel;
63};
64
65/*
66 * Offset of an MSCP from the beginning of the MSCP DMA mapping.
67 */
68#define	UHA_MSCP_OFF(m)	(((u_long)(m)) - ((u_long)&sc->sc_mscps[0]))
69
70struct uha_probe_data {
71	int sc_irq, sc_drq;
72	int sc_scsi_dev;
73};
74
75void	uha_attach(struct uha_softc *, struct uha_probe_data *);
76void	uha_timeout(void *arg);
77struct	uha_mscp *uha_mscp_phys_kv(struct uha_softc *, u_long);
78void	uha_done(struct uha_softc *, struct uha_mscp *);
79