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
60static void	dpt_eisa_attach(device_t, device_t, void *);
61static int	dpt_eisa_irq(bus_space_tag_t, bus_space_handle_t, int *);
62static int	dpt_eisa_match(device_t, cfdata_t, void *);
63
64CFATTACH_DECL_NEW(dpt_eisa, sizeof(struct dpt_softc),
65    dpt_eisa_match, dpt_eisa_attach, NULL, NULL);
66
67static 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
84static int
85dpt_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
105static int
106dpt_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
113static void
114dpt_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