1 /* $NetBSD: dpt_eisa.c,v 1.11 2003/12/04 13:57:30 keihan 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 1.11 2003/12/04 13:57:30 keihan 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 <machine/bus.h>
43 #include <machine/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(struct device *, struct device *, void *);
61 static int dpt_eisa_irq(bus_space_tag_t, bus_space_handle_t, int *);
62 static int dpt_eisa_match(struct device *, struct cfdata *, void *);
63
64 CFATTACH_DECL(dpt_eisa, sizeof(struct dpt_softc),
65 dpt_eisa_match, dpt_eisa_attach, NULL, NULL);
66
67 static const char * const dpt_eisa_boards[] = {
68 "DPT2402",
69 "DPTA401",
70 "DPTA402",
71 "DPTA410",
72 "DPTA411",
73 "DPTA412",
74 "DPTA420",
75 "DPTA501",
76 "DPTA502",
77 "DPTA701",
78 "DPTBC01",
79 "NEC8200", /* OEM */
80 "ATT2408", /* OEM */
81 NULL
82 };
83
84 static int
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
106 dpt_eisa_match(struct device *parent, struct cfdata *match, void *aux)
107 {
108 struct eisa_attach_args *ea;
109 int i;
110
111 ea = aux;
112
113 for (i = 0; dpt_eisa_boards[i] != NULL; i++)
114 if (strcmp(ea->ea_idstring, dpt_eisa_boards[i]) == 0)
115 break;
116
117 return (dpt_eisa_boards[i] != NULL);
118 }
119
120 static void
121 dpt_eisa_attach(struct device *parent, struct device *self, void *aux)
122 {
123 struct eisa_attach_args *ea;
124 bus_space_handle_t ioh;
125 eisa_chipset_tag_t ec;
126 eisa_intr_handle_t ih;
127 struct dpt_softc *sc;
128 bus_space_tag_t iot;
129 const char *intrstr;
130 int irq;
131
132 ea = aux;
133 sc = (struct dpt_softc *)self;
134 iot = ea->ea_iot;
135 ec = ea->ea_ec;
136
137 printf(": ");
138
139 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
140 DPT_EISA_SLOT_OFFSET, DPT_EISA_IOSIZE, 0, &ioh)) {
141 printf("can't map i/o space\n");
142 return;
143 }
144
145 sc->sc_iot = iot;
146 sc->sc_ioh = ioh;
147 sc->sc_dmat = ea->ea_dmat;
148
149 /* Map and establish the interrupt. */
150 if (dpt_eisa_irq(iot, ioh, &irq)) {
151 printf("HBA on invalid IRQ\n");
152 return;
153 }
154
155 if (eisa_intr_map(ec, irq, &ih)) {
156 printf("can't map interrupt (%d)\n", irq);
157 return;
158 }
159
160 intrstr = eisa_intr_string(ec, ih);
161 sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
162 dpt_intr, sc);
163 if (sc->sc_ih == NULL) {
164 printf("can't establish interrupt");
165 if (intrstr != NULL)
166 printf(" at %s", intrstr);
167 printf("\n");
168 return;
169 }
170
171 /* Read the EATA configuration. */
172 if (dpt_readcfg(sc)) {
173 printf("%s: readcfg failed - see dpt(4)\n",
174 sc->sc_dv.dv_xname);
175 return;
176 }
177
178 sc->sc_bustype = SI_EISA_BUS;
179 sc->sc_isaport = EISA_SLOT_ADDR(ea->ea_slot) + DPT_EISA_SLOT_OFFSET;
180 sc->sc_isairq = irq;
181
182 /* Now attach to the bus-independent code. */
183 dpt_init(sc, intrstr);
184 }
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