mgnsc.c revision 1.13 1 1.13 chopps /* $NetBSD: mgnsc.c,v 1.13 1995/08/18 15:28:01 chopps Exp $ */
2 1.6 cgd
3 1.1 chopps /*
4 1.2 chopps * Copyright (c) 1994 Michael L. Hitch
5 1.1 chopps * Copyright (c) 1982, 1990 The Regents of the University of California.
6 1.1 chopps * All rights reserved.
7 1.1 chopps *
8 1.1 chopps * Redistribution and use in source and binary forms, with or without
9 1.1 chopps * modification, are permitted provided that the following conditions
10 1.1 chopps * are met:
11 1.1 chopps * 1. Redistributions of source code must retain the above copyright
12 1.1 chopps * notice, this list of conditions and the following disclaimer.
13 1.1 chopps * 2. Redistributions in binary form must reproduce the above copyright
14 1.1 chopps * notice, this list of conditions and the following disclaimer in the
15 1.1 chopps * documentation and/or other materials provided with the distribution.
16 1.1 chopps * 3. All advertising materials mentioning features or use of this software
17 1.1 chopps * must display the following acknowledgement:
18 1.1 chopps * This product includes software developed by the University of
19 1.1 chopps * California, Berkeley and its contributors.
20 1.1 chopps * 4. Neither the name of the University nor the names of its contributors
21 1.1 chopps * may be used to endorse or promote products derived from this software
22 1.1 chopps * without specific prior written permission.
23 1.1 chopps *
24 1.1 chopps * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 1.1 chopps * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 1.1 chopps * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 1.1 chopps * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 1.1 chopps * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 1.1 chopps * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 1.1 chopps * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 1.1 chopps * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 1.1 chopps * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 1.1 chopps * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 1.1 chopps * SUCH DAMAGE.
35 1.1 chopps *
36 1.1 chopps * @(#)dma.c
37 1.1 chopps */
38 1.1 chopps
39 1.2 chopps #include <sys/param.h>
40 1.2 chopps #include <sys/systm.h>
41 1.2 chopps #include <sys/kernel.h>
42 1.2 chopps #include <sys/device.h>
43 1.2 chopps #include <scsi/scsi_all.h>
44 1.2 chopps #include <scsi/scsiconf.h>
45 1.2 chopps #include <amiga/amiga/custom.h>
46 1.2 chopps #include <amiga/amiga/cc.h>
47 1.2 chopps #include <amiga/amiga/device.h>
48 1.10 chopps #include <amiga/amiga/isr.h>
49 1.2 chopps #include <amiga/dev/siopreg.h>
50 1.2 chopps #include <amiga/dev/siopvar.h>
51 1.8 chopps #include <amiga/dev/zbusvar.h>
52 1.2 chopps
53 1.2 chopps int mgnscprint __P((void *auxp, char *));
54 1.2 chopps void mgnscattach __P((struct device *, struct device *, void *));
55 1.2 chopps int mgnscmatch __P((struct device *, struct cfdata *, void *));
56 1.11 chopps int siopintr __P((struct siop_softc *));
57 1.10 chopps int mgnsc_dmaintr __P((struct siop_softc *));
58 1.2 chopps
59 1.2 chopps struct scsi_adapter mgnsc_scsiswitch = {
60 1.2 chopps siop_scsicmd,
61 1.2 chopps siop_minphys,
62 1.2 chopps 0, /* no lun support */
63 1.2 chopps 0, /* no lun support */
64 1.2 chopps };
65 1.2 chopps
66 1.2 chopps struct scsi_device mgnsc_scsidev = {
67 1.2 chopps NULL, /* use default error handler */
68 1.2 chopps NULL, /* do not have a start functio */
69 1.2 chopps NULL, /* have no async handler */
70 1.2 chopps NULL, /* Use default done routine */
71 1.2 chopps };
72 1.2 chopps
73 1.2 chopps
74 1.2 chopps #ifdef DEBUG
75 1.2 chopps #endif
76 1.2 chopps
77 1.2 chopps struct cfdriver mgnsccd = {
78 1.7 chopps NULL, "mgnsc", (cfmatch_t)mgnscmatch, mgnscattach,
79 1.2 chopps DV_DULL, sizeof(struct siop_softc), NULL, 0 };
80 1.2 chopps
81 1.1 chopps /*
82 1.2 chopps * if we are a CSA Magnum 40 SCSI
83 1.1 chopps */
84 1.2 chopps int
85 1.2 chopps mgnscmatch(pdp, cdp, auxp)
86 1.2 chopps struct device *pdp;
87 1.2 chopps struct cfdata *cdp;
88 1.2 chopps void *auxp;
89 1.2 chopps {
90 1.8 chopps struct zbus_args *zap;
91 1.2 chopps
92 1.2 chopps zap = auxp;
93 1.2 chopps if (zap->manid == 1058 && zap->prodid == 17)
94 1.2 chopps return(1);
95 1.2 chopps return(0);
96 1.2 chopps }
97 1.2 chopps
98 1.2 chopps void
99 1.2 chopps mgnscattach(pdp, dp, auxp)
100 1.2 chopps struct device *pdp, *dp;
101 1.2 chopps void *auxp;
102 1.2 chopps {
103 1.2 chopps struct siop_softc *sc;
104 1.8 chopps struct zbus_args *zap;
105 1.2 chopps siop_regmap_p rp;
106 1.2 chopps
107 1.4 chopps printf("\n");
108 1.2 chopps zap = auxp;
109 1.13 chopps
110 1.2 chopps sc = (struct siop_softc *)dp;
111 1.5 chopps sc->sc_siopp = rp = zap->va + 0x8000;
112 1.1 chopps
113 1.2 chopps /*
114 1.2 chopps * DCNTL = 25.01->37.5MHZ / SCLK/1.5
115 1.2 chopps * CTEST7 = TT1
116 1.2 chopps */
117 1.2 chopps sc->sc_clock_freq = 0x0240;
118 1.13 chopps
119 1.12 chopps alloc_sicallback();
120 1.1 chopps
121 1.2 chopps sc->sc_link.adapter_softc = sc;
122 1.9 chopps sc->sc_link.adapter_target = 7;
123 1.2 chopps sc->sc_link.adapter = &mgnsc_scsiswitch;
124 1.2 chopps sc->sc_link.device = &mgnsc_scsidev;
125 1.13 chopps sc->sc_link.openings = 2;
126 1.13 chopps
127 1.13 chopps siopinitialize(sc);
128 1.1 chopps
129 1.10 chopps sc->sc_isr.isr_intr = mgnsc_dmaintr;
130 1.10 chopps sc->sc_isr.isr_arg = sc;
131 1.11 chopps sc->sc_isr.isr_ipl = 6;
132 1.10 chopps add_isr (&sc->sc_isr);
133 1.2 chopps
134 1.2 chopps /*
135 1.2 chopps * attach all scsi units on us
136 1.2 chopps */
137 1.2 chopps config_found(dp, &sc->sc_link, mgnscprint);
138 1.2 chopps }
139 1.2 chopps
140 1.2 chopps /*
141 1.2 chopps * print diag if pnp is NULL else just extra
142 1.2 chopps */
143 1.2 chopps int
144 1.2 chopps mgnscprint(auxp, pnp)
145 1.2 chopps void *auxp;
146 1.2 chopps char *pnp;
147 1.1 chopps {
148 1.2 chopps if (pnp == NULL)
149 1.2 chopps return(UNCONF);
150 1.2 chopps return(QUIET);
151 1.1 chopps }
152 1.1 chopps
153 1.11 chopps /*
154 1.11 chopps * Level 6 interrupt processing for the Magnum/40 SCSI. Because the
155 1.11 chopps * level 6 interrupt is above splbio, the interrupt status is saved
156 1.11 chopps * and an sicallback to the level 2 interrupt handler scheduled.
157 1.11 chopps * This way, the actual processing of the interrupt can be deferred
158 1.11 chopps * until splbio is unblocked.
159 1.11 chopps */
160 1.12 chopps
161 1.2 chopps int
162 1.10 chopps mgnsc_dmaintr(sc)
163 1.10 chopps struct siop_softc *sc;
164 1.2 chopps {
165 1.2 chopps siop_regmap_p rp;
166 1.2 chopps u_char istat;
167 1.2 chopps
168 1.13 chopps if (sc->sc_flags & SIOP_INTSOFF)
169 1.13 chopps return (0); /* interrupts are not active */
170 1.10 chopps rp = sc->sc_siopp;
171 1.10 chopps istat = rp->siop_istat;
172 1.10 chopps if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
173 1.10 chopps return (0);
174 1.10 chopps /*
175 1.10 chopps * save interrupt status, DMA status, and SCSI status 0
176 1.10 chopps * (may need to deal with stacked interrupts?)
177 1.10 chopps */
178 1.13 chopps sc->sc_sstat0 = rp->siop_sstat0;
179 1.10 chopps sc->sc_istat = istat;
180 1.10 chopps sc->sc_dstat = rp->siop_dstat;
181 1.13 chopps /*
182 1.13 chopps * disable interrupts until the callback can process this
183 1.13 chopps * interrupt.
184 1.13 chopps */
185 1.13 chopps rp->siop_sien = 0;
186 1.13 chopps rp->siop_dien = 0;
187 1.13 chopps sc->sc_flags |= SIOP_INTDEFER | SIOP_INTSOFF;
188 1.12 chopps add_sicallback (siopintr, sc, NULL);
189 1.10 chopps return (1);
190 1.2 chopps }
191