1 /* $NetBSD: bha_eisa.c,v 1.38 2021/01/27 04:35:15 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: bha_eisa.c,v 1.38 2021/01/27 04:35:15 thorpej Exp $");
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/device.h>
38
39 #include <sys/bus.h>
40 #include <sys/intr.h>
41
42 #include <dev/scsipi/scsipi_all.h>
43 #include <dev/scsipi/scsiconf.h>
44
45 #include <dev/eisa/eisavar.h>
46 #include <dev/eisa/eisadevs.h>
47
48 #include <dev/ic/bhareg.h>
49 #include <dev/ic/bhavar.h>
50
51 #define BHA_EISA_SLOT_OFFSET 0x0c80
52 #define BHA_EISA_IOSIZE 0x0010
53 #define BHA_ISA_IOSIZE 0x0004
54
55 #define BHA_EISA_IOCONF 0x0c
56
57 static int bha_eisa_address(bus_space_tag_t, bus_space_handle_t, int *);
58 static int bha_eisa_match(device_t, cfdata_t, void *);
59 static void bha_eisa_attach(device_t, device_t, void *);
60
61 CFATTACH_DECL_NEW(bha_eisa, sizeof(struct bha_softc),
62 bha_eisa_match, bha_eisa_attach, NULL, NULL);
63
64 static int
bha_eisa_address(bus_space_tag_t iot,bus_space_handle_t ioh,int * portp)65 bha_eisa_address(bus_space_tag_t iot, bus_space_handle_t ioh, int *portp)
66 {
67 int port;
68
69 switch (bus_space_read_1(iot, ioh, BHA_EISA_IOCONF) & 0x07) {
70 case 0x00:
71 port = 0x330;
72 break;
73 case 0x01:
74 port = 0x334;
75 break;
76 case 0x02:
77 port = 0x230;
78 break;
79 case 0x03:
80 port = 0x234;
81 break;
82 case 0x04:
83 port = 0x130;
84 break;
85 case 0x05:
86 port = 0x134;
87 break;
88 default:
89 return (1);
90 }
91
92 *portp = port;
93 return (0);
94 }
95
96 static const struct device_compatible_entry compat_data[] = {
97 { .compat = "BUS4201", .data = EISA_PRODUCT_BUS4201 },
98 { .compat = "BUS4202", .data = EISA_PRODUCT_BUS4202 },
99 DEVICE_COMPAT_EOL
100 };
101
102 /*
103 * Check the slots looking for a board we recognise
104 * If we find one, note its address (slot) and call
105 * the actual probe routine to check it out.
106 */
107 static int
bha_eisa_match(device_t parent,cfdata_t match,void * aux)108 bha_eisa_match(device_t parent, cfdata_t match, void *aux)
109 {
110 struct eisa_attach_args *ea = aux;
111 bus_space_tag_t iot = ea->ea_iot;
112 bus_space_handle_t ioh, ioh2;
113 int port;
114 int rv;
115
116 if (!eisa_compatible_match(ea, compat_data))
117 return (0);
118
119 if (bus_space_map(iot,
120 EISA_SLOT_ADDR(ea->ea_slot) + BHA_EISA_SLOT_OFFSET, BHA_EISA_IOSIZE,
121 0, &ioh))
122 return (0);
123
124 if (bha_eisa_address(iot, ioh, &port) ||
125 bus_space_map(iot, port, BHA_ISA_IOSIZE, 0, &ioh2)) {
126 bus_space_unmap(iot, ioh, BHA_EISA_IOSIZE);
127 return (0);
128 }
129
130 rv = bha_find(iot, ioh2);
131
132 bus_space_unmap(iot, ioh2, BHA_ISA_IOSIZE);
133 bus_space_unmap(iot, ioh, BHA_EISA_IOSIZE);
134
135 return (rv);
136 }
137
138 /*
139 * Attach all the sub-devices we can find
140 */
141 static void
bha_eisa_attach(device_t parent,device_t self,void * aux)142 bha_eisa_attach(device_t parent, device_t self, void *aux)
143 {
144 struct eisa_attach_args *ea = aux;
145 struct bha_softc *sc = device_private(self);
146 const struct device_compatible_entry *dce;
147 bus_space_tag_t iot = ea->ea_iot;
148 bus_space_handle_t ioh, ioh2;
149 int port;
150 struct bha_probe_data bpd;
151 eisa_chipset_tag_t ec = ea->ea_ec;
152 eisa_intr_handle_t ih;
153 const char *intrstr;
154 char intrbuf[EISA_INTRSTR_LEN];
155
156 sc->sc_dev = self;
157
158 dce = eisa_compatible_lookup(ea, compat_data);
159 KASSERT(dce != NULL);
160
161 printf(": %s\n", (const char *)dce->data);
162
163 if (bus_space_map(iot,
164 EISA_SLOT_ADDR(ea->ea_slot) + BHA_EISA_SLOT_OFFSET, BHA_EISA_IOSIZE,
165 0, &ioh))
166 panic("bha_eisa_attach: could not map EISA slot");
167
168 if (bha_eisa_address(iot, ioh, &port) ||
169 bus_space_map(iot, port, BHA_ISA_IOSIZE, 0, &ioh2))
170 panic("bha_eisa_attach: could not map ISA address");
171
172 sc->sc_iot = iot;
173 sc->sc_ioh = ioh2;
174 sc->sc_dmat = ea->ea_dmat;
175 if (!bha_probe_inquiry(iot, ioh2, &bpd))
176 panic("bha_eisa_attach failed");
177
178 sc->sc_dmaflags = 0;
179
180 if (eisa_intr_map(ec, bpd.sc_irq, &ih)) {
181 aprint_error_dev(sc->sc_dev, "couldn't map interrupt (%d)\n",
182 bpd.sc_irq);
183 return;
184 }
185 intrstr = eisa_intr_string(ec, ih, intrbuf, sizeof(intrbuf));
186 sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
187 bha_intr, sc);
188 if (sc->sc_ih == NULL) {
189 aprint_error_dev(sc->sc_dev, "couldn't establish interrupt");
190 if (intrstr != NULL)
191 aprint_error(" at %s", intrstr);
192 aprint_error("\n");
193 return;
194 }
195 aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
196
197 bha_attach(sc);
198 }
199