1 /* $NetBSD: bppcsc.c,v 1.5 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) 2011 Radoslaw Kujawa
36 * Copyright (c) 1994 Michael L. Hitch
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 *
47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
50 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
51 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
52 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
53 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
54 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
55 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
56 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
57 *
58 * @(#)dma.c
59 */
60
61 #include <sys/cdefs.h>
62 __KERNEL_RCSID(0, "$NetBSD: bppcsc.c,v 1.5 2021/08/07 16:18:41 thorpej Exp $");
63
64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/kernel.h>
67 #include <sys/device.h>
68
69 #include <uvm/uvm_extern.h>
70
71 #include <dev/scsipi/scsi_all.h>
72 #include <dev/scsipi/scsipi_all.h>
73 #include <dev/scsipi/scsiconf.h>
74
75 #include <amiga/amiga/custom.h>
76 #include <amiga/amiga/cc.h>
77 #include <amiga/amiga/device.h>
78 #include <amiga/amiga/isr.h>
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 #define BPPC_SCSI_OFF 0xf40000
85 #define BPPC_PUPROM_OFF 0xf00010
86
87 void bppcscattach(device_t, device_t, void *);
88 int bppcscmatch(device_t, cfdata_t, void *);
89 int bppcsc_dmaintr(void *);
90 #ifdef DEBUG
91 void bppcsc_dump(void);
92 #endif
93
94 CFATTACH_DECL_NEW(bppcsc, sizeof(struct siop_softc),
95 bppcscmatch, bppcscattach, NULL, NULL);
96
97 /*
98 * if we are a Phase5 BlizzardPPC 603e+
99 */
100 int
bppcscmatch(device_t parent,cfdata_t cf,void * aux)101 bppcscmatch(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, "bppcsc") == 0)
108 return 1;
109
110 return 0 ;
111 }
112
113 void
bppcscattach(device_t parent,device_t self,void * aux)114 bppcscattach(device_t parent, device_t self, void *aux)
115 {
116 struct siop_softc *sc;
117 struct scsipi_adapter *adapt;
118 struct scsipi_channel *chan;
119 siop_regmap_p rp;
120
121 sc = device_private(self);
122 sc->sc_dev = self;
123 adapt = &sc->sc_adapter;
124 chan = &sc->sc_channel;
125
126 aprint_naive(": SCSI controller\n");
127 aprint_normal(": BlizzardPPC 603e+ SCSI adapter\n");
128
129 sc->sc_siopp = rp = ztwomap(BPPC_SCSI_OFF);
130 #ifdef DEBUG
131 siop_dump(sc);
132 #endif
133 /*
134 * CTEST7 = 00
135 */
136 sc->sc_clock_freq = 50; /* Clock = 50 MHz */
137 sc->sc_ctest7 = 0x00;
138 sc->sc_dcntl = 0x20; /* XXX - taken from cbiiisc */
139
140 /*
141 * Fill in the scsipi_adapter.
142 */
143 memset(adapt, 0, sizeof(*adapt));
144 adapt->adapt_dev = self;
145 adapt->adapt_nchannels = 1;
146 adapt->adapt_openings = 7;
147 adapt->adapt_max_periph = 1;
148 adapt->adapt_request = siop_scsipi_request;
149 adapt->adapt_minphys = siop_minphys;
150
151 /*
152 * Fill in the scsipi_channel.
153 */
154 memset(chan, 0, sizeof(*chan));
155 chan->chan_adapter = adapt;
156 chan->chan_bustype = &scsi_bustype;
157 chan->chan_channel = 0;
158 chan->chan_ntargets = 8;
159 chan->chan_nluns = 8;
160 chan->chan_id = 7;
161
162 siopinitialize(sc);
163
164 sc->sc_isr.isr_intr = bppcsc_dmaintr;
165 sc->sc_isr.isr_arg = sc;
166 sc->sc_isr.isr_ipl = 2;
167 add_isr (&sc->sc_isr);
168
169 /*
170 * attach all scsi units on us
171 */
172 config_found(self, chan, scsiprint, CFARGS_NONE);
173 }
174
175 int
bppcsc_dmaintr(void * arg)176 bppcsc_dmaintr(void *arg)
177 {
178 struct siop_softc *sc;
179 siop_regmap_p rp;
180 u_char istat;
181
182 sc = arg;
183 if (sc->sc_flags & SIOP_INTSOFF)
184 return 0; /* interrupts are not active */
185 rp = sc->sc_siopp;
186 amiga_membarrier();
187 istat = rp->siop_istat;
188 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
189 return 0;
190 /*
191 * save interrupt status, DMA status, and SCSI status 0
192 * (may need to deal with stacked interrupts?)
193 */
194 sc->sc_sstat0 = rp->siop_sstat0;
195 sc->sc_istat = istat;
196 sc->sc_dstat = rp->siop_dstat;
197 amiga_membarrier();
198 siopintr(sc);
199 return 1;
200 }
201
202 #ifdef DEBUG
203 void
bppcsc_dump(void)204 bppcsc_dump(void)
205 {
206 extern struct cfdriver bppcsc_cd;
207 struct siop_softc *sc;
208 int i;
209
210 for (i = 0; i < bppcsc_cd.cd_ndevs; ++i) {
211 sc = device_lookup_private(&bppcsc_cd, i);
212 if (sc != NULL)
213 siop_dump(sc);
214 }
215 }
216 #endif
217