1 /* $NetBSD: aic_isa.c,v 1.26 2009/11/23 02:13:46 rmind Exp $ */
2
3 /*
4 * Copyright (c) 1994, 1995, 1996 Charles M. Hannum. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Charles M. Hannum.
17 * 4. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * Copyright (c) 1994 Jarle Greipsland
21 * All rights reserved.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the above copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. The name of the author may not be used to endorse or promote products
32 * derived from this software without specific prior written permission.
33 *
34 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
35 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
36 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
37 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
38 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
39 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
40 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
42 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
43 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
44 * POSSIBILITY OF SUCH DAMAGE.
45 */
46
47 /*
48 * Acknowledgements: Many of the algorithms used in this driver are
49 * inspired by the work of Julian Elischer (julian@tfs.com) and
50 * Charles Hannum (mycroft@duality.gnu.ai.mit.edu). Thanks a million!
51 */
52
53 #include <sys/cdefs.h>
54 __KERNEL_RCSID(0, "$NetBSD: aic_isa.c,v 1.26 2009/11/23 02:13:46 rmind Exp $");
55
56 #include <sys/param.h>
57 #include <sys/systm.h>
58 #include <sys/kernel.h>
59 #include <sys/errno.h>
60 #include <sys/ioctl.h>
61 #include <sys/device.h>
62 #include <sys/buf.h>
63 #include <sys/proc.h>
64 #include <sys/queue.h>
65
66 #include <sys/bus.h>
67 #include <sys/intr.h>
68
69 #include <dev/scsipi/scsi_all.h>
70 #include <dev/scsipi/scsipi_all.h>
71 #include <dev/scsipi/scsiconf.h>
72
73 #include <dev/isa/isavar.h>
74
75 #include <dev/ic/aic6360reg.h>
76 #include <dev/ic/aic6360var.h>
77
78 static int aic_isa_probe(device_t, cfdata_t, void *);
79 static void aic_isa_attach(device_t, device_t, void *);
80
81 struct aic_isa_softc {
82 struct aic_softc sc_aic; /* real "aic" softc */
83
84 /* ISA-specific goo. */
85 void *sc_ih; /* interrupt handler */
86 };
87
88 CFATTACH_DECL_NEW(aic_isa, sizeof(struct aic_isa_softc),
89 aic_isa_probe, aic_isa_attach, NULL, NULL);
90
91
92 /*
93 * INITIALIZATION ROUTINES (probe, attach ++)
94 */
95
96 /*
97 * aic_isa_probe: probe for AIC6360 SCSI-controller
98 * returns non-zero value if a controller is found.
99 */
100 int
aic_isa_probe(device_t parent,cfdata_t match,void * aux)101 aic_isa_probe(device_t parent, cfdata_t match, void *aux)
102 {
103 struct isa_attach_args *ia = aux;
104 bus_space_tag_t iot = ia->ia_iot;
105 bus_space_handle_t ioh;
106 int rv;
107
108 if (ia->ia_nio < 1)
109 return (0);
110 if (ia->ia_nirq < 1)
111 return (0);
112
113 if (ISA_DIRECT_CONFIG(ia))
114 return (0);
115
116 /* Disallow wildcarded i/o address. */
117 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
118 return (0);
119
120 /* Disallow wildcarded IRQ. */
121 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
122 return (0);
123
124 if (bus_space_map(iot, ia->ia_io[0].ir_addr, AIC_ISA_IOSIZE, 0, &ioh))
125 return (0);
126
127 rv = aic_find(iot, ioh);
128
129 bus_space_unmap(iot, ioh, AIC_ISA_IOSIZE);
130
131 if (rv) {
132 ia->ia_nio = 1;
133 ia->ia_io[0].ir_size = AIC_ISA_IOSIZE;
134
135 ia->ia_nirq = 1;
136
137 ia->ia_niomem = 0;
138 ia->ia_ndrq = 0;
139 }
140 return rv;
141 }
142
143 void
aic_isa_attach(device_t parent,device_t self,void * aux)144 aic_isa_attach(device_t parent, device_t self, void *aux)
145 {
146 struct isa_attach_args *ia = aux;
147 struct aic_isa_softc *isc = device_private(self);
148 struct aic_softc *sc = &isc->sc_aic;
149 bus_space_tag_t iot = ia->ia_iot;
150 bus_space_handle_t ioh;
151 isa_chipset_tag_t ic = ia->ia_ic;
152
153 sc->sc_dev = self;
154
155 printf("\n");
156
157 if (bus_space_map(iot, ia->ia_io[0].ir_addr, AIC_ISA_IOSIZE, 0, &ioh)) {
158 aprint_error_dev(self, "can't map i/o space\n");
159 return;
160 }
161
162 sc->sc_iot = iot;
163 sc->sc_ioh = ioh;
164 if (!aic_find(iot, ioh)) {
165 aprint_error_dev(self, "aic_find failed\n");
166 return;
167 }
168
169 isc->sc_ih = isa_intr_establish(ic, ia->ia_irq[0].ir_irq, IST_EDGE,
170 IPL_BIO, aicintr, sc);
171 if (isc->sc_ih == NULL) {
172 aprint_error_dev(self, "couldn't establish interrupt\n");
173 return;
174 }
175
176 aicattach(sc);
177 }
178