FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/ahavar.h
1 /* $NetBSD: ahavar.h,v 1.11 2001/04/25 17:53:30 bouyer 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 /*
43 * Mail box defs etc.
44 * these could be bigger but we need the aha_softc to fit on a single page..
45 */
46 #define AHA_MBX_SIZE 16 /* mail box size (MAX 255 MBxs) */
47 /* don't need that many really */
48 #define AHA_CCB_MAX 16 /* store up to 16 CCBs at one time */
49 #define CCB_HASH_SIZE 16 /* hash table size for phystokv */
50 #define CCB_HASH_SHIFT 9
51 #define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1))
52
53 #define aha_nextmbx(wmb, mbx, mbio) \
54 if ((wmb) == &(mbx)->mbio[AHA_MBX_SIZE - 1]) \
55 (wmb) = &(mbx)->mbio[0]; \
56 else \
57 (wmb)++;
58
59 struct aha_mbx {
60 struct aha_mbx_out mbo[AHA_MBX_SIZE];
61 struct aha_mbx_in mbi[AHA_MBX_SIZE];
62 struct aha_mbx_out *cmbo; /* Collection Mail Box out */
63 struct aha_mbx_out *tmbo; /* Target Mail Box out */
64 struct aha_mbx_in *tmbi; /* Target Mail Box in */
65 };
66
67 struct aha_control {
68 struct aha_mbx ac_mbx; /* all our mailboxes */
69 struct aha_ccb ac_ccbs[AHA_CCB_MAX]; /* all our control blocks */
70 };
71
72 struct aha_softc {
73 struct device sc_dev;
74
75 bus_space_tag_t sc_iot;
76 bus_space_handle_t sc_ioh;
77 bus_dma_tag_t sc_dmat;
78 bus_dmamap_t sc_dmamap_control; /* maps the control structures */
79 void *sc_ih;
80
81 struct aha_control *sc_control; /* control structures */
82
83 #define wmbx (&sc->sc_control->ac_mbx)
84
85 struct aha_ccb *sc_ccbhash[CCB_HASH_SIZE];
86 TAILQ_HEAD(, aha_ccb) sc_free_ccb, sc_waiting_ccb;
87 int sc_mbofull;
88
89 struct scsipi_adapter sc_adapter;
90 struct scsipi_channel sc_channel;
91
92 char sc_model[18],
93 sc_firmware[4];
94 };
95
96 /*
97 * Offset of a Mail Box In from the beginning of the control DMA mapping.
98 */
99 #define AHA_MBI_OFF(m) (offsetof(struct aha_control, ac_mbx.mbi[0]) + \
100 (((u_long)(m)) - ((u_long)&wmbx->mbi[0])))
101
102 /*
103 * Offset of a Mail Box Out from the beginning of the control DMA mapping.
104 */
105 #define AHA_MBO_OFF(m) (offsetof(struct aha_control, ac_mbx.mbo[0]) + \
106 (((u_long)(m)) - ((u_long)&wmbx->mbo[0])))
107
108 /*
109 * Offset of a CCB from the beginning of the control DMA mapping.
110 */
111 #define AHA_CCB_OFF(c) (offsetof(struct aha_control, ac_ccbs[0]) + \
112 (((u_long)(c)) - ((u_long)&sc->sc_control->ac_ccbs[0])))
113
114 struct aha_probe_data {
115 int sc_irq, sc_drq;
116 int sc_scsi_dev; /* adapters scsi id */
117 };
118
119 int aha_find __P((bus_space_tag_t, bus_space_handle_t,
120 struct aha_probe_data *));
121 void aha_attach __P((struct aha_softc *, struct aha_probe_data *));
122 int aha_intr __P((void *));
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