Annotation of sys/dev/isa/bha_isa.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: bha_isa.c,v 1.3 2007/04/10 17:47:55 miod Exp $ */
2: /* $NetBSD: bha_isa.c,v 1.14 1998/08/15 10:10:51 mycroft Exp $ */
3:
4: /*-
5: * Copyright (c) 1998 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Charles M. Hannum.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
40: #include <sys/types.h>
41: #include <sys/param.h>
42: #include <sys/systm.h>
43: #include <sys/device.h>
44:
45: #include <machine/bus.h>
46: #include <machine/intr.h>
47:
48: #include <scsi/scsi_all.h>
49: #include <scsi/scsiconf.h>
50:
51: #include <dev/isa/isavar.h>
52: #include <dev/isa/isadmavar.h>
53:
54: #include <dev/ic/bhareg.h>
55: #include <dev/ic/bhavar.h>
56:
57: #include "aha.h"
58: #if NAHA > 0
59: int btports[8]; /* cannot be more */
60: int nbtports;
61: #endif
62:
63: #define BHA_ISA_IOSIZE 4
64:
65: int bha_isa_probe(struct device *, void *, void *);
66: void bha_isa_attach(struct device *, struct device *, void *);
67:
68: struct cfattach bha_isa_ca = {
69: sizeof(struct bha_softc), bha_isa_probe, bha_isa_attach
70: };
71:
72: /*
73: * Check the slots looking for a board we recognise
74: * If we find one, note its address (slot) and call
75: * the actual probe routine to check it out.
76: */
77: int
78: bha_isa_probe(parent, match, aux)
79: struct device *parent;
80: void *aux, *match;
81: {
82: struct isa_attach_args *ia = aux;
83: bus_space_tag_t iot = ia->ia_iot;
84: bus_space_handle_t ioh;
85: struct bha_probe_data bpd;
86: #if NAHA > 0
87: struct bha_digit digit;
88: #endif
89: int rv;
90:
91: /* Disallow wildcarded i/o address. */
92: if (ia->ia_iobase == IOBASEUNK)
93: return (0);
94:
95: if (bus_space_map(iot, ia->ia_iobase, BHA_ISA_IOSIZE, 0, &ioh))
96: return (0);
97:
98: rv = bha_find(iot, ioh, &bpd);
99:
100: #if NAHA > 0
101: if (rv) {
102: /* Adaptec 1542 cards do not support this */
103: digit.reply.digit = '@';
104: digit.cmd.opcode = BHA_INQUIRE_REVISION_3;
105: bha_cmd(iot, ioh, NULL, sizeof(digit.cmd), (u_char *)&digit.cmd,
106: sizeof(digit.reply), (u_char *)&digit.reply);
107: if (digit.reply.digit == '@')
108: return 1;
109: }
110: #endif
111:
112: bus_space_unmap(iot, ioh, BHA_ISA_IOSIZE);
113:
114: if (rv) {
115: if (ia->ia_irq != -1 && ia->ia_irq != bpd.sc_irq)
116: return (0);
117: if (ia->ia_drq != -1 && ia->ia_drq != bpd.sc_drq)
118: return (0);
119: ia->ia_irq = bpd.sc_irq;
120: ia->ia_drq = bpd.sc_drq;
121: ia->ia_msize = 0;
122: ia->ia_iosize = BHA_ISA_IOSIZE;
123: }
124: return (rv);
125: }
126:
127: /*
128: * Attach all the sub-devices we can find
129: */
130: void
131: bha_isa_attach(parent, self, aux)
132: struct device *parent, *self;
133: void *aux;
134: {
135: struct isa_attach_args *ia = aux;
136: struct bha_softc *sc = (void *)self;
137: bus_space_tag_t iot = ia->ia_iot;
138: bus_space_handle_t ioh;
139: struct bha_probe_data bpd;
140: isa_chipset_tag_t ic = ia->ia_ic;
141: #ifndef __OpenBSD__
142: int error;
143: #endif
144:
145: printf("\n");
146:
147: if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) {
148: printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
149: return;
150: }
151:
152: sc->sc_iot = iot;
153: sc->sc_ioh = ioh;
154: sc->sc_dmat = ia->ia_dmat;
155: if (!bha_find(iot, ioh, &bpd)) {
156: printf("%s: bha_find failed\n", sc->sc_dev.dv_xname);
157: return;
158: }
159:
160: sc->sc_dmaflags = 0;
161: if (bpd.sc_drq != DRQUNK) {
162: #ifdef __OpenBSD__
163: isa_dmacascade(ic, bpd.sc_drq);
164: #else
165: if ((error = isa_dmacascade(ic, bpd.sc_drq)) != 0) {
166: printf("%s: unable to cascade DRQ, error = %d\n",
167: sc->sc_dev.dv_xname, error);
168: return;
169: }
170: #endif
171: } else {
172: /*
173: * We have a VLB controller. If we're at least both
174: * hardware revision E and firmware revision 3.37,
175: * we can do 32-bit DMA (earlier revisions are buggy
176: * in this regard).
177: */
178: bha_inquire_setup_information(sc);
179: if (strcmp(sc->sc_firmware, "3.37") < 0)
180: printf("%s: buggy VLB controller, disabling 32-bit DMA\n",
181: sc->sc_dev.dv_xname);
182: else
183: sc->sc_dmaflags = ISABUS_DMA_32BIT;
184: }
185:
186: sc->sc_ih = isa_intr_establish(ic, bpd.sc_irq, IST_EDGE, IPL_BIO,
187: bha_intr, sc, sc->sc_dev.dv_xname);
188: if (sc->sc_ih == NULL) {
189: printf("%s: couldn't establish interrupt\n",
190: sc->sc_dev.dv_xname);
191: return;
192: }
193:
194: bha_attach(sc, &bpd);
195:
196: #if NAHA > 0
197: /* XXXX To avoid conflicting with the aha1542 probe */
198: btports[nbtports++] = ia->ia_iobase;
199: #endif
200: }
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