1 /* $NetBSD: dpt_eisa.c,v 1.24 2021/01/27 04:35:15 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 1999, 2000, 2001 Andrew Doran <ad@NetBSD.org>
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 */
29
30 /*
31 * EISA front-end for DPT EATA SCSI driver.
32 */
33
34 #include <sys/cdefs.h>
35 __KERNEL_RCSID(0, "$NetBSD: dpt_eisa.c,v 1.24 2021/01/27 04:35:15 thorpej Exp $");
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/device.h>
40 #include <sys/queue.h>
41
42 #include <sys/bus.h>
43 #include <sys/intr.h>
44
45 #include <dev/scsipi/scsipi_all.h>
46 #include <dev/scsipi/scsiconf.h>
47
48 #include <dev/eisa/eisavar.h>
49
50 #include <dev/ic/dptreg.h>
51 #include <dev/ic/dptvar.h>
52
53 #include <dev/i2o/dptivar.h>
54
55 #define DPT_EISA_SLOT_OFFSET 0x0c00
56 #define DPT_EISA_IOSIZE 0x0100
57 #define DPT_EISA_IOCONF 0x90
58 #define DPT_EISA_EATA_REG_OFFSET 0x88
59
60 static void dpt_eisa_attach(device_t, device_t, void *);
61 static int dpt_eisa_irq(bus_space_tag_t, bus_space_handle_t, int *);
62 static int dpt_eisa_match(device_t, cfdata_t, void *);
63
64 CFATTACH_DECL_NEW(dpt_eisa, sizeof(struct dpt_softc),
65 dpt_eisa_match, dpt_eisa_attach, NULL, NULL);
66
67 static const struct device_compatible_entry compat_data[] = {
68 { .compat = "DPT2402" },
69 { .compat = "DPTA401" },
70 { .compat = "DPTA402" },
71 { .compat = "DPTA410" },
72 { .compat = "DPTA411" },
73 { .compat = "DPTA412" },
74 { .compat = "DPTA420" },
75 { .compat = "DPTA501" },
76 { .compat = "DPTA502" },
77 { .compat = "DPTA701" },
78 { .compat = "DPTBC01" },
79 { .compat = "NEC8200" }, /* OEM */
80 { .compat = "ATT2408" }, /* OEM */
81 DEVICE_COMPAT_EOL
82 };
83
84 static int
dpt_eisa_irq(bus_space_tag_t iot,bus_space_handle_t ioh,int * irq)85 dpt_eisa_irq(bus_space_tag_t iot, bus_space_handle_t ioh, int *irq)
86 {
87
88 switch (bus_space_read_1(iot, ioh, DPT_EISA_IOCONF) & 0x38) {
89 case 0x08:
90 *irq = 11;
91 break;
92 case 0x10:
93 *irq = 15;
94 break;
95 case 0x20:
96 *irq = 14;
97 break;
98 default:
99 return (-1);
100 }
101
102 return (0);
103 }
104
105 static int
dpt_eisa_match(device_t parent,cfdata_t match,void * aux)106 dpt_eisa_match(device_t parent, cfdata_t match, void *aux)
107 {
108 struct eisa_attach_args *ea = aux;
109
110 return eisa_compatible_match(ea, compat_data);
111 }
112
113 static void
dpt_eisa_attach(device_t parent,device_t self,void * aux)114 dpt_eisa_attach(device_t parent, device_t self, void *aux)
115 {
116 struct eisa_attach_args *ea;
117 bus_space_handle_t ioh;
118 eisa_chipset_tag_t ec;
119 eisa_intr_handle_t ih;
120 struct dpt_softc *sc;
121 bus_space_tag_t iot;
122 const char *intrstr;
123 int irq;
124 char intrbuf[EISA_INTRSTR_LEN];
125
126 ea = aux;
127 sc = device_private(self);
128 sc->sc_dev = self;
129 iot = ea->ea_iot;
130 ec = ea->ea_ec;
131
132 printf(": ");
133
134 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
135 DPT_EISA_SLOT_OFFSET, DPT_EISA_IOSIZE, 0, &ioh)) {
136 aprint_error("can't map i/o space\n");
137 return;
138 }
139
140 sc->sc_iot = iot;
141 sc->sc_ioh = ioh;
142 sc->sc_dmat = ea->ea_dmat;
143
144 /* Map and establish the interrupt. */
145 if (dpt_eisa_irq(iot, ioh, &irq)) {
146 aprint_error("HBA on invalid IRQ\n");
147 return;
148 }
149
150 if (eisa_intr_map(ec, irq, &ih)) {
151 aprint_error("can't map interrupt (%d)\n", irq);
152 return;
153 }
154
155 intrstr = eisa_intr_string(ec, ih, intrbuf, sizeof(intrbuf));
156 sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
157 dpt_intr, sc);
158 if (sc->sc_ih == NULL) {
159 aprint_error("can't establish interrupt");
160 if (intrstr != NULL)
161 aprint_error(" at %s", intrstr);
162 aprint_error("\n");
163 return;
164 }
165
166 /* Read the EATA configuration. */
167 if (dpt_readcfg(sc)) {
168 aprint_error_dev(sc->sc_dev, "readcfg failed - see dpt(4)\n");
169 return;
170 }
171
172 sc->sc_bustype = SI_EISA_BUS;
173 sc->sc_isaport = EISA_SLOT_ADDR(ea->ea_slot) + DPT_EISA_SLOT_OFFSET;
174 sc->sc_isairq = irq;
175
176 /* Now attach to the bus-independent code. */
177 dpt_init(sc, intrstr);
178 }
179