1 /* $NetBSD: wesc.c,v 1.42 2021/08/07 16:18:41 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 1982, 1990 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)dma.c
32 */
33
34 /*
35 * Copyright (c) 1994 Michael L. Hitch
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56 *
57 * @(#)dma.c
58 */
59
60 #include <sys/cdefs.h>
61 __KERNEL_RCSID(0, "$NetBSD: wesc.c,v 1.42 2021/08/07 16:18:41 thorpej Exp $");
62
63 #include <sys/param.h>
64 #include <sys/systm.h>
65 #include <sys/kernel.h>
66 #include <sys/device.h>
67
68 #include <dev/scsipi/scsi_all.h>
69 #include <dev/scsipi/scsipi_all.h>
70 #include <dev/scsipi/scsiconf.h>
71 #include <amiga/amiga/custom.h>
72 #include <amiga/amiga/cc.h>
73 #include <amiga/amiga/device.h>
74 #include <amiga/amiga/isr.h>
75 #include <amiga/dev/siopreg.h>
76 #include <amiga/dev/siopvar.h>
77 #include <amiga/dev/zbusvar.h>
78
79 void wescattach(device_t, device_t, void *);
80 int wescmatch(device_t, cfdata_t, void *);
81 int wesc_dmaintr(void *);
82 #ifdef DEBUG
83 void wesc_dump(void);
84 #endif
85
86
87 #ifdef DEBUG
88 #endif
89
90 CFATTACH_DECL_NEW(wesc, sizeof(struct siop_softc),
91 wescmatch, wescattach, NULL, NULL);
92
93 /*
94 * if we are an MacroSystemsUS Warp Engine
95 */
96 int
wescmatch(device_t parent,cfdata_t cf,void * aux)97 wescmatch(device_t parent, cfdata_t cf, void *aux)
98 {
99 struct zbus_args *zap;
100
101 zap = aux;
102 if (zap->manid == 2203 && zap->prodid == 19)
103 return(1);
104 return(0);
105 }
106
107 void
wescattach(device_t parent,device_t self,void * aux)108 wescattach(device_t parent, device_t self, void *aux)
109 {
110 struct siop_softc *sc = device_private(self);
111 struct zbus_args *zap;
112 siop_regmap_p rp;
113 struct scsipi_adapter *adapt = &sc->sc_adapter;
114 struct scsipi_channel *chan = &sc->sc_channel;
115
116 sc->sc_dev = self;
117
118 printf("\n");
119
120 zap = aux;
121
122 sc->sc_siopp = rp = (siop_regmap_p)((char *)zap->va + 0x40000);
123
124 /*
125 * CTEST7 = SC0, TT1
126 */
127 sc->sc_clock_freq = 50; /* Clock = 50 MHz */
128 sc->sc_ctest7 = SIOP_CTEST7_SC0 | SIOP_CTEST7_TT1;
129 sc->sc_dcntl = 0x00;
130
131 /*
132 * Fill in the scsipi_adapter.
133 */
134 memset(adapt, 0, sizeof(*adapt));
135 adapt->adapt_dev = self;
136 adapt->adapt_nchannels = 1;
137 adapt->adapt_openings = 7;
138 adapt->adapt_max_periph = 1;
139 adapt->adapt_request = siop_scsipi_request;
140 adapt->adapt_minphys = siop_minphys;
141
142 /*
143 * Fill in the scsipi_channel.
144 */
145 memset(chan, 0, sizeof(*chan));
146 chan->chan_adapter = adapt;
147 chan->chan_bustype = &scsi_bustype;
148 chan->chan_channel = 0;
149 chan->chan_ntargets = 8;
150 chan->chan_nluns = 8;
151 chan->chan_id = 7;
152
153 siopinitialize(sc);
154
155 sc->sc_isr.isr_intr = wesc_dmaintr;
156 sc->sc_isr.isr_arg = sc;
157 sc->sc_isr.isr_ipl = 2;
158 add_isr (&sc->sc_isr);
159
160 /*
161 * attach all scsi units on us
162 */
163 config_found(self, chan, scsiprint, CFARGS_NONE);
164 }
165
166 int
wesc_dmaintr(void * arg)167 wesc_dmaintr(void *arg)
168 {
169 struct siop_softc *sc = arg;
170 siop_regmap_p rp;
171 u_char istat;
172
173 if (sc->sc_flags & SIOP_INTSOFF)
174 return (0); /* interrupts are not active */
175 rp = sc->sc_siopp;
176 istat = rp->siop_istat;
177 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
178 return (0);
179 /*
180 * save interrupt status, DMA status, and SCSI status 0
181 * (may need to deal with stacked interrupts?)
182 */
183 sc->sc_sstat0 = rp->siop_sstat0;
184 sc->sc_istat = istat;
185 sc->sc_dstat = rp->siop_dstat;
186 siopintr(sc);
187 return(1);
188 }
189
190 #ifdef DEBUG
191 void
wesc_dump(void)192 wesc_dump(void)
193 {
194 extern struct cfdriver wesc_cd;
195 struct siop_softc *sc;
196 int i;
197
198 for (i = 0; i < wesc_cd.cd_ndevs; ++i) {
199 sc = device_lookup_private(&wesc_cd, i);
200 if (sc != NULL)
201 siop_dump(sc);
202 }
203 }
204 #endif
205