1/*	$NetBSD: aha_isa.c,v 1.28 2009/09/21 08:12:47 tsutsui 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: aha_isa.c,v 1.28 2009/09/21 08:12:47 tsutsui 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/scsi_all.h>
43#include <dev/scsipi/scsipi_all.h>
44#include <dev/scsipi/scsiconf.h>
45
46#include <dev/isa/isavar.h>
47#include <dev/isa/isadmavar.h>
48
49#include <dev/ic/ahareg.h>
50#include <dev/ic/ahavar.h>
51
52#define	AHA_ISA_IOSIZE	4
53
54static int	aha_isa_probe(device_t, cfdata_t, void *);
55static void	aha_isa_attach(device_t, device_t, void *);
56
57CFATTACH_DECL_NEW(aha_isa, sizeof(struct aha_softc),
58    aha_isa_probe, aha_isa_attach, NULL, NULL);
59
60/*
61 * Check the slots looking for a board we recognise
62 * If we find one, note it's address (slot) and call
63 * the actual probe routine to check it out.
64 */
65int
66aha_isa_probe(device_t parent, cfdata_t match, void *aux)
67{
68	struct isa_attach_args *ia = aux;
69	bus_space_tag_t iot = ia->ia_iot;
70	bus_space_handle_t ioh;
71	struct aha_probe_data apd;
72	int rv;
73
74	if (ia->ia_nio < 1)
75		return (0);
76	if (ia->ia_nirq < 1)
77		return (0);
78	if (ia->ia_ndrq < 1)
79		return (0);
80
81	if (ISA_DIRECT_CONFIG(ia))
82		return (0);
83
84	/* Disallow wildcarded i/o address. */
85	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
86		return (0);
87
88	if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh))
89		return (0);
90
91	rv = aha_find(iot, ioh, &apd);
92
93	bus_space_unmap(iot, ioh, AHA_ISA_IOSIZE);
94
95	if (rv) {
96		if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ &&
97		    ia->ia_irq[0].ir_irq != apd.sc_irq)
98			return (0);
99		if (ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ &&
100		    ia->ia_drq[0].ir_drq != apd.sc_drq)
101			return (0);
102
103		ia->ia_nio = 1;
104		ia->ia_io[0].ir_size = AHA_ISA_IOSIZE;
105
106		ia->ia_nirq = 1;
107		ia->ia_irq[0].ir_irq = apd.sc_irq;
108
109		ia->ia_ndrq = 1;
110		ia->ia_drq[0].ir_drq = apd.sc_drq;
111
112		ia->ia_niomem = 0;
113	}
114	return (rv);
115}
116
117/*
118 * Attach all the sub-devices we can find
119 */
120void
121aha_isa_attach(device_t parent, device_t self, void *aux)
122{
123	struct isa_attach_args *ia = aux;
124	struct aha_softc *sc = device_private(self);
125	bus_space_tag_t iot = ia->ia_iot;
126	bus_space_handle_t ioh;
127	struct aha_probe_data apd;
128	isa_chipset_tag_t ic = ia->ia_ic;
129	int error;
130
131	sc->sc_dev = self;
132
133	printf("\n");
134
135	if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh)) {
136		aprint_error_dev(self, "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 = ia->ia_dmat;
143	if (!aha_find(iot, ioh, &apd)) {
144		aprint_error_dev(self, "aha_find failed\n");
145		return;
146	}
147
148	if (apd.sc_drq != -1) {
149		if ((error = isa_dmacascade(ic, apd.sc_drq)) != 0) {
150			aprint_error_dev(self,
151			    "unable to cascade DRQ, error = %d\n", error);
152			return;
153		}
154	}
155
156	sc->sc_ih = isa_intr_establish(ic, apd.sc_irq, IST_EDGE, IPL_BIO,
157	    aha_intr, sc);
158	if (sc->sc_ih == NULL) {
159		aprint_error_dev(self, "couldn't establish interrupt\n");
160		return;
161	}
162
163	aha_attach(sc, &apd);
164}
165