FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/uhavar.h
1 /* $NetBSD: uhavar.h,v 1.14 2005/12/11 12:21:29 christos 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 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 #include <sys/queue.h>
41
42 #define UHA_MSCP_MAX 32 /* store up to 32 MSCPs at one time */
43 #define MSCP_HASH_SIZE 32 /* hash table size for phystokv */
44 #define MSCP_HASH_SHIFT 9
45 #define MSCP_HASH(x) ((((long)(x))>>MSCP_HASH_SHIFT) & (MSCP_HASH_SIZE - 1))
46
47 struct uha_softc {
48 struct device sc_dev;
49
50 bus_space_tag_t sc_iot;
51 bus_space_handle_t sc_ioh;
52 bus_dma_tag_t sc_dmat;
53 void *sc_ih;
54
55 int sc_dmaflags; /* bus-specific DMA map creation flags */
56
57 void (*start_mbox)(struct uha_softc *, struct uha_mscp *);
58 int (*poll)(struct uha_softc *, struct scsipi_xfer *, int);
59 void (*init)(struct uha_softc *);
60
61 bus_dmamap_t sc_dmamap_mscp; /* maps the mscps */
62 struct uha_mscp *sc_mscps; /* all our mscps */
63
64 struct uha_mscp *sc_mscphash[MSCP_HASH_SIZE];
65 TAILQ_HEAD(, uha_mscp) sc_free_mscp;
66 int sc_nummscps;
67
68 struct scsipi_adapter sc_adapter;
69 struct scsipi_channel sc_channel;
70 };
71
72 /*
73 * Offset of an MSCP from the beginning of the MSCP DMA mapping.
74 */
75 #define UHA_MSCP_OFF(m) (((u_long)(m)) - ((u_long)&sc->sc_mscps[0]))
76
77 struct uha_probe_data {
78 int sc_irq, sc_drq;
79 int sc_scsi_dev;
80 };
81
82 void uha_attach(struct uha_softc *, struct uha_probe_data *);
83 void uha_timeout(void *arg);
84 struct uha_mscp *uha_mscp_phys_kv(struct uha_softc *, u_long);
85 void uha_done(struct uha_softc *, struct uha_mscp *);
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