afsc.c revision 1.3 
1/*	$NetBSD: afsc.c,v 1.3 1994/12/01 17:24:49 chopps Exp $	*/
2
3/*
4 * Copyright (c) 1994 Michael L. Hitch
5 * Copyright (c) 1982, 1990 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 *	@(#)dma.c
37 */
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/kernel.h>
42#include <sys/device.h>
43#include <scsi/scsi_all.h>
44#include <scsi/scsiconf.h>
45#include <amiga/amiga/custom.h>
46#include <amiga/amiga/cc.h>
47#include <amiga/amiga/device.h>
48#include <amiga/dev/siopreg.h>
49#include <amiga/dev/siopvar.h>
50#include <amiga/dev/zthreebusvar.h>
51
52int afscprint __P((void *auxp, char *));
53void afscattach __P((struct device *, struct device *, void *));
54int afscmatch __P((struct device *, struct cfdata *, void *));
55int siopintr __P((struct siop_softc *));
56
57struct scsi_adapter afsc_scsiswitch = {
58	siop_scsicmd,
59	siop_minphys,
60	0,			/* no lun support */
61	0,			/* no lun support */
62	siop_adinfo,
63	"afsc",
64};
65
66struct scsi_device afsc_scsidev = {
67	NULL,		/* use default error handler */
68	NULL,		/* do not have a start functio */
69	NULL,		/* have no async handler */
70	NULL,		/* Use default done routine */
71	"afsc",
72	0,
73};
74
75
76#ifdef DEBUG
77#endif
78
79struct cfdriver afsccd = {
80	NULL, "afsc", (cfmatch_t)afscmatch, afscattach,
81	DV_DULL, sizeof(struct siop_softc), NULL, 0 };
82
83/*
84 * if we are a Commodore Amiga A4091
85 */
86int
87afscmatch(pdp, cdp, auxp)
88	struct device *pdp;
89	struct cfdata *cdp;
90	void *auxp;
91{
92	struct zthreebus_args *zap;
93
94	zap = auxp;
95	if (zap->manid == 514 && zap->prodid == 84)
96		return(1);
97	return(0);
98}
99
100void
101afscattach(pdp, dp, auxp)
102	struct device *pdp, *dp;
103	void *auxp;
104{
105	struct siop_softc *sc;
106	struct zthreebus_args *zap;
107	siop_regmap_p rp;
108
109	printf("\n");
110
111	zap = auxp;
112
113	sc = (struct siop_softc *)dp;
114	sc->sc_siopp = rp = zap->va + 0x00800000;
115
116	/*
117	 * DCNTL = 37.51->50MHZ / SCLK/2
118	 * CTEST7 = 80 [disable burst]
119	 */
120	sc->sc_clock_freq = 0x8000;
121
122
123	siopinitialize(sc);
124
125	sc->sc_link.adapter_softc = sc;
126	sc->sc_link.adapter_targ = 7;
127	sc->sc_link.adapter = &afsc_scsiswitch;
128	sc->sc_link.device = &afsc_scsidev;
129	TAILQ_INIT(&sc->sc_xslist);
130
131	custom.intreq = INTF_PORTS;
132	custom.intena = INTF_SETCLR | INTF_PORTS;
133
134	/*
135	 * attach all scsi units on us
136	 */
137	config_found(dp, &sc->sc_link, afscprint);
138}
139
140/*
141 * print diag if pnp is NULL else just extra
142 */
143int
144afscprint(auxp, pnp)
145	void *auxp;
146	char *pnp;
147{
148	if (pnp == NULL)
149		return(UNCONF);
150	return(QUIET);
151}
152
153int
154afsc_dmaintr()
155{
156	siop_regmap_p rp;
157	struct siop_softc *dev;
158	int i, found;
159	u_char istat;
160
161	found = 0;
162	for (i = 0; i < afsccd.cd_ndevs; i++) {
163		dev = afsccd.cd_devs[i];
164		if (dev == NULL)
165			continue;
166		rp = dev->sc_siopp;
167		istat = rp->siop_istat;
168		if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
169			continue;
170		if ((dev->sc_flags & (SIOP_DMA | SIOP_SELECTED)) == SIOP_SELECTED)
171			continue;	/* doing non-interrupt I/O */
172		found++;
173		dev->sc_istat = istat;
174		dev->sc_dstat = rp->siop_dstat;
175		dev->sc_sstat0 = rp->siop_sstat0;
176		siopintr(dev);
177	}
178	return(found);
179}
180