1 /* $NetBSD: cbiiisc.c,v 1.23 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) 1994,1998 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: cbiiisc.c,v 1.23 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 #include <sys/cpu.h>
68
69 #include <dev/scsipi/scsi_all.h>
70 #include <dev/scsipi/scsipi_all.h>
71 #include <dev/scsipi/scsiconf.h>
72 #include <amiga/amiga/custom.h>
73 #include <amiga/amiga/cc.h>
74 #include <amiga/amiga/device.h>
75 #include <amiga/amiga/isr.h>
76
77 #define ARCH_720 /* This is for a 53c770 */
78
79 #include <amiga/dev/siopreg.h>
80 #include <amiga/dev/siopvar.h>
81 #include <amiga/dev/zbusvar.h>
82 #include <amiga/dev/p5busvar.h>
83
84 void cbiiiscattach(device_t, device_t, void *);
85 int cbiiiscmatch(device_t, cfdata_t, void *);
86 int cbiiisc_dmaintr(void *);
87 #ifdef DEBUG
88 void cbiiisc_dump(void);
89 #endif
90
91 #ifdef DEBUG
92 #endif
93
94 CFATTACH_DECL_NEW(cbiiisc, sizeof(struct siop_softc),
95 cbiiiscmatch, cbiiiscattach, NULL, NULL);
96
97 /*
98 * if we are a CyberStorm MK III SCSI
99 */
100 int
cbiiiscmatch(device_t parent,cfdata_t cf,void * aux)101 cbiiiscmatch(device_t parent, cfdata_t cf, void *aux)
102 {
103 struct p5bus_attach_args *p5baa;
104
105 p5baa = aux;
106
107 if (strcmp(p5baa->p5baa_name, "cbiiisc") == 0)
108 return 1;
109
110 return 0;
111 }
112
113 void
cbiiiscattach(device_t parent,device_t self,void * aux)114 cbiiiscattach(device_t parent, device_t self, void *aux)
115 {
116 struct siop_softc *sc = device_private(self);
117 siop_regmap_p rp;
118 struct scsipi_adapter *adapt = &sc->sc_adapter;
119 struct scsipi_channel *chan = &sc->sc_channel;
120
121 aprint_normal(": CyberStorm PPC/Mk-III SCSI host adapter\n");
122
123 sc->sc_dev = self;
124 sc->sc_siopp = rp = ztwomap(0xf40000);
125 /* siopng_dump_registers(sc); */
126
127 /*
128 * CTEST7 = 00
129 */
130 sc->sc_clock_freq = 50; /* Clock = 50 MHz >> */
131 sc->sc_ctest7 = 0x00;
132 sc->sc_dcntl = 0x20; /* XXX ?? */
133
134 /*
135 * Fill in the scsipi_adapter.
136 */
137 memset(adapt, 0, sizeof(*adapt));
138 adapt->adapt_dev = self;
139 adapt->adapt_nchannels = 1;
140 adapt->adapt_openings = 7;
141 adapt->adapt_max_periph = 1;
142 adapt->adapt_request = siopng_scsipi_request;
143 adapt->adapt_minphys = siopng_minphys;
144
145 /*
146 * Fill in the scsipi_channel.
147 */
148 memset(chan, 0, sizeof(*chan));
149 chan->chan_adapter = adapt;
150 chan->chan_bustype = &scsi_bustype;
151 chan->chan_channel = 0;
152 chan->chan_ntargets = 16;
153 chan->chan_nluns = 8;
154 chan->chan_id = 7;
155
156 siopnginitialize(sc);
157
158 if (sc->sc_channel.chan_ntargets < 0)
159 return;
160
161 sc->sc_isr.isr_intr = cbiiisc_dmaintr;
162 sc->sc_isr.isr_arg = sc;
163 sc->sc_isr.isr_ipl = 2; /* ?? */
164 add_isr(&sc->sc_isr);
165
166 /*
167 * attach all scsi units on us
168 */
169 config_found(self, chan, scsiprint, CFARGS_NONE);
170 }
171
172 int
cbiiisc_dmaintr(void * arg)173 cbiiisc_dmaintr(void *arg)
174 {
175 struct siop_softc *sc = arg;
176 siop_regmap_p rp;
177 int istat;
178
179 if (sc->sc_flags & SIOP_INTSOFF)
180 return (0); /* interrupts are not active */
181 rp = sc->sc_siopp;
182 amiga_membarrier();
183 istat = rp->siop_istat;
184 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
185 return(0);
186 /*
187 * save interrupt status, DMA status, and SCSI status 0
188 * (may need to deal with stacked interrupts?)
189 */
190 sc->sc_sist = rp->siop_sist;
191 sc->sc_istat = istat;
192 sc->sc_dstat = rp->siop_dstat;
193 amiga_membarrier();
194 siopngintr(sc);
195 return(1);
196 }
197
198 #ifdef DEBUG
199 void
cbiiisc_dump(void)200 cbiiisc_dump(void)
201 {
202 extern struct cfdriver cbiiisc_cd;
203 struct siop_softc *sc;
204 int i;
205
206 for (i = 0; i < cbiiisc_cd.cd_ndevs; ++i) {
207 sc = device_lookup_private(&cbiiisc_cd, i);
208 if (sc != NULL)
209 siopng_dump(sc);
210 }
211 }
212 #endif
213