xref: /netbsd-src/sys/dev/eisa/dpt_eisa.c (revision b7b7574d3bf8eeb51a1fa3977b59142ec6434a55)
1 /*	$NetBSD: dpt_eisa.c,v 1.22 2014/03/29 19:28:24 christos 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 1.22 2014/03/29 19:28:24 christos 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 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(device_t parent, cfdata_t 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(device_t parent, device_t 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 	char intrbuf[EISA_INTRSTR_LEN];
132 
133 	ea = aux;
134 	sc = device_private(self);
135 	sc->sc_dev = self;
136 	iot = ea->ea_iot;
137 	ec = ea->ea_ec;
138 
139 	printf(": ");
140 
141 	if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
142 	    DPT_EISA_SLOT_OFFSET, DPT_EISA_IOSIZE, 0, &ioh)) {
143 		printf("can't map i/o space\n");
144 		return;
145 	}
146 
147 	sc->sc_iot = iot;
148 	sc->sc_ioh = ioh;
149 	sc->sc_dmat = ea->ea_dmat;
150 
151 	/* Map and establish the interrupt. */
152 	if (dpt_eisa_irq(iot, ioh, &irq)) {
153 		printf("HBA on invalid IRQ\n");
154 		return;
155 	}
156 
157 	if (eisa_intr_map(ec, irq, &ih)) {
158 		printf("can't map interrupt (%d)\n", irq);
159 		return;
160 	}
161 
162 	intrstr = eisa_intr_string(ec, ih, intrbuf, sizeof(intrbuf));
163 	sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
164 	    dpt_intr, sc);
165 	if (sc->sc_ih == NULL) {
166 		printf("can't establish interrupt");
167 		if (intrstr != NULL)
168 			printf(" at %s", intrstr);
169 		printf("\n");
170 		return;
171 	}
172 
173 	/* Read the EATA configuration. */
174 	if (dpt_readcfg(sc)) {
175 		aprint_error_dev(sc->sc_dev, "readcfg failed - see dpt(4)\n");
176 		return;
177 	}
178 
179 	sc->sc_bustype = SI_EISA_BUS;
180 	sc->sc_isaport =  EISA_SLOT_ADDR(ea->ea_slot) + DPT_EISA_SLOT_OFFSET;
181 	sc->sc_isairq = irq;
182 
183 	/* Now attach to the bus-independent code. */
184 	dpt_init(sc, intrstr);
185 }
186