FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/ahavar.h
1 /* $NetBSD: ahavar.h,v 1.13 2005/12/11 12:21:25 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 #ifndef _DEV_IC_AHAVAR_H_
41 #define _DEV_IC_AHAVAR_H_
42
43 #include <sys/queue.h>
44
45 /*
46 * Mail box defs etc.
47 * these could be bigger but we need the aha_softc to fit on a single page..
48 */
49 #define AHA_MBX_SIZE 16 /* mail box size (MAX 255 MBxs) */
50 /* don't need that many really */
51 #define AHA_CCB_MAX 16 /* store up to 16 CCBs at one time */
52 #define CCB_HASH_SIZE 16 /* hash table size for phystokv */
53 #define CCB_HASH_SHIFT 9
54 #define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1))
55
56 #define aha_nextmbx(wmb, mbx, mbio) \
57 if ((wmb) == &(mbx)->mbio[AHA_MBX_SIZE - 1]) \
58 (wmb) = &(mbx)->mbio[0]; \
59 else \
60 (wmb)++;
61
62 struct aha_mbx {
63 struct aha_mbx_out mbo[AHA_MBX_SIZE];
64 struct aha_mbx_in mbi[AHA_MBX_SIZE];
65 struct aha_mbx_out *cmbo; /* Collection Mail Box out */
66 struct aha_mbx_out *tmbo; /* Target Mail Box out */
67 struct aha_mbx_in *tmbi; /* Target Mail Box in */
68 };
69
70 struct aha_control {
71 struct aha_mbx ac_mbx; /* all our mailboxes */
72 struct aha_ccb ac_ccbs[AHA_CCB_MAX]; /* all our control blocks */
73 };
74
75 struct aha_softc {
76 struct device sc_dev;
77
78 bus_space_tag_t sc_iot;
79 bus_space_handle_t sc_ioh;
80 bus_dma_tag_t sc_dmat;
81 bus_dmamap_t sc_dmamap_control; /* maps the control structures */
82 void *sc_ih;
83
84 struct aha_control *sc_control; /* control structures */
85
86 #define wmbx (&sc->sc_control->ac_mbx)
87
88 struct aha_ccb *sc_ccbhash[CCB_HASH_SIZE];
89 TAILQ_HEAD(, aha_ccb) sc_free_ccb, sc_waiting_ccb;
90 int sc_mbofull;
91
92 struct scsipi_adapter sc_adapter;
93 struct scsipi_channel sc_channel;
94
95 char sc_model[18],
96 sc_firmware[4];
97 };
98
99 /*
100 * Offset of a Mail Box In from the beginning of the control DMA mapping.
101 */
102 #define AHA_MBI_OFF(m) (offsetof(struct aha_control, ac_mbx.mbi[0]) + \
103 (((u_long)(m)) - ((u_long)&wmbx->mbi[0])))
104
105 /*
106 * Offset of a Mail Box Out from the beginning of the control DMA mapping.
107 */
108 #define AHA_MBO_OFF(m) (offsetof(struct aha_control, ac_mbx.mbo[0]) + \
109 (((u_long)(m)) - ((u_long)&wmbx->mbo[0])))
110
111 /*
112 * Offset of a CCB from the beginning of the control DMA mapping.
113 */
114 #define AHA_CCB_OFF(c) (offsetof(struct aha_control, ac_ccbs[0]) + \
115 (((u_long)(c)) - ((u_long)&sc->sc_control->ac_ccbs[0])))
116
117 struct aha_probe_data {
118 int sc_irq, sc_drq;
119 int sc_scsi_dev; /* adapters scsi id */
120 };
121
122 int aha_find(bus_space_tag_t, bus_space_handle_t,
123 struct aha_probe_data *);
124 void aha_attach(struct aha_softc *, struct aha_probe_data *);
125 int aha_intr(void *);
126
127 #endif /* _DEV_IC_AHAVAR_H_ */
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