1 | /* $NetBSD: fdc_isa.c,v 1.20 2015/04/13 16:33:24 riastradh 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 | /*- |
33 | * Copyright (c) 1990 The Regents of the University of California. |
34 | * All rights reserved. |
35 | * |
36 | * This code is derived from software contributed to Berkeley by |
37 | * Don Ahn. |
38 | * |
39 | * Redistribution and use in source and binary forms, with or without |
40 | * modification, are permitted provided that the following conditions |
41 | * are met: |
42 | * 1. Redistributions of source code must retain the above copyright |
43 | * notice, this list of conditions and the following disclaimer. |
44 | * 2. Redistributions in binary form must reproduce the above copyright |
45 | * notice, this list of conditions and the following disclaimer in the |
46 | * documentation and/or other materials provided with the distribution. |
47 | * 3. Neither the name of the University nor the names of its contributors |
48 | * may be used to endorse or promote products derived from this software |
49 | * without specific prior written permission. |
50 | * |
51 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
52 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
53 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
54 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
55 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
56 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
57 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
58 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
59 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
60 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
61 | * SUCH DAMAGE. |
62 | * |
63 | * @(#)fd.c 7.4 (Berkeley) 5/25/91 |
64 | */ |
65 | |
66 | #include <sys/cdefs.h> |
67 | __KERNEL_RCSID(0, "$NetBSD: fdc_isa.c,v 1.20 2015/04/13 16:33:24 riastradh Exp $" ); |
68 | |
69 | #include <sys/param.h> |
70 | #include <sys/systm.h> |
71 | #include <sys/callout.h> |
72 | #include <sys/device.h> |
73 | #include <sys/buf.h> |
74 | #include <sys/queue.h> |
75 | |
76 | #include <sys/bus.h> |
77 | #include <sys/intr.h> |
78 | |
79 | #include <dev/isa/isavar.h> |
80 | #include <dev/isa/isadmavar.h> |
81 | |
82 | #include <dev/isa/fdreg.h> |
83 | #include <dev/isa/fdcvar.h> |
84 | |
85 | static int fdc_isa_probe(device_t, cfdata_t, void *); |
86 | static void fdc_isa_attach(device_t, device_t, void *); |
87 | static int fdc_isa_detach(device_t, int); |
88 | |
89 | struct fdc_isa_softc { |
90 | struct fdc_softc sc_fdc; /* base fdc device */ |
91 | |
92 | bus_space_handle_t sc_baseioh; /* base I/O handle */ |
93 | }; |
94 | |
95 | CFATTACH_DECL2_NEW(fdc_isa, sizeof(struct fdc_isa_softc), |
96 | fdc_isa_probe, fdc_isa_attach, fdc_isa_detach, NULL, NULL, fdc_childdet); |
97 | |
98 | #ifdef NEWCONFIG |
99 | void fdc_isa_forceintr(void *); |
100 | #endif |
101 | |
102 | static int |
103 | fdc_isa_probe(device_t parent, cfdata_t match, void *aux) |
104 | { |
105 | struct isa_attach_args *ia = aux; |
106 | bus_space_tag_t iot; |
107 | bus_space_handle_t ioh, ctl_ioh, base_ioh; |
108 | int rv, iobase; |
109 | |
110 | iot = ia->ia_iot; |
111 | rv = 0; |
112 | |
113 | if (ia->ia_nio < 1) |
114 | return (0); |
115 | if (ia->ia_nirq < 1) |
116 | return (0); |
117 | if (ia->ia_ndrq < 1) |
118 | return (0); |
119 | |
120 | if (ISA_DIRECT_CONFIG(ia)) |
121 | return (0); |
122 | |
123 | /* Disallow wildcarded I/O addresses. */ |
124 | if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) |
125 | return (0); |
126 | |
127 | /* Don't allow wildcarded IRQ/DRQ. */ |
128 | if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) |
129 | return (0); |
130 | |
131 | if (ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ) |
132 | return (0); |
133 | |
134 | /* Map the I/O space. */ |
135 | iobase = ia->ia_io[0].ir_addr; |
136 | if (bus_space_map(iot, iobase, 6 /* FDC_NPORT */, 0, &base_ioh)) |
137 | return (0); |
138 | |
139 | if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) { |
140 | bus_space_unmap(iot, base_ioh, 6); |
141 | return (0); |
142 | } |
143 | |
144 | if (bus_space_map(iot, iobase + fdctl + 2, 1, 0, &ctl_ioh)) { |
145 | bus_space_unmap(iot, base_ioh, 6); |
146 | return (0); |
147 | } |
148 | |
149 | /* Not needed for the rest of the probe. */ |
150 | bus_space_unmap(iot, ctl_ioh, 1); |
151 | |
152 | /* reset */ |
153 | bus_space_write_1(iot, ioh, fdout, 0); |
154 | delay(100); |
155 | bus_space_write_1(iot, ioh, fdout, FDO_FRST); |
156 | |
157 | /* see if it can handle a command */ |
158 | if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) |
159 | goto out; |
160 | out_fdc(iot, ioh, 0xdf); |
161 | out_fdc(iot, ioh, 2); |
162 | |
163 | rv = 1; |
164 | ia->ia_nio = 1; |
165 | ia->ia_io[0].ir_size = FDC_NPORT; |
166 | |
167 | ia->ia_nirq = 1; |
168 | ia->ia_ndrq = 1; |
169 | |
170 | ia->ia_niomem = 0; |
171 | |
172 | out: |
173 | bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */); |
174 | return (rv); |
175 | } |
176 | |
177 | static int |
178 | fdc_isa_detach(device_t self, int flags) |
179 | { |
180 | int rc; |
181 | struct fdc_isa_softc *isc = device_private(self); |
182 | struct fdc_softc *fdc = &isc->sc_fdc; |
183 | |
184 | if ((rc = fdcdetach(self, flags)) != 0) |
185 | return rc; |
186 | |
187 | isa_intr_disestablish(fdc->sc_ic, fdc->sc_ih); |
188 | |
189 | bus_space_unmap(fdc->sc_iot, fdc->sc_fdctlioh, 1); |
190 | |
191 | bus_space_unmap(fdc->sc_iot, isc->sc_baseioh, 6 /* FDC_NPORT */); |
192 | |
193 | return 0; |
194 | } |
195 | |
196 | static void |
197 | fdc_isa_attach(device_t parent, device_t self, void *aux) |
198 | { |
199 | struct fdc_isa_softc *isc = device_private(self); |
200 | struct fdc_softc *fdc = &isc->sc_fdc; |
201 | struct isa_attach_args *ia = aux; |
202 | |
203 | aprint_naive("\n" ); |
204 | aprint_normal("\n" ); |
205 | |
206 | fdc->sc_dev = self; |
207 | fdc->sc_iot = ia->ia_iot; |
208 | fdc->sc_ic = ia->ia_ic; |
209 | fdc->sc_drq = ia->ia_drq[0].ir_drq; |
210 | |
211 | if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr, |
212 | 6 /* FDC_NPORT */, 0, &isc->sc_baseioh)) { |
213 | aprint_normal_dev(fdc->sc_dev, "unable to map I/O space\n" ); |
214 | return; |
215 | } |
216 | |
217 | if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4, |
218 | &fdc->sc_ioh)) { |
219 | aprint_normal_dev(fdc->sc_dev, |
220 | "unable to subregion I/O space\n" ); |
221 | return; |
222 | } |
223 | |
224 | if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr + fdctl + 2, 1, 0, |
225 | &fdc->sc_fdctlioh)) { |
226 | aprint_normal_dev(fdc->sc_dev, |
227 | "unable to map CTL I/O space\n" ); |
228 | return; |
229 | } |
230 | |
231 | fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, |
232 | IST_EDGE, IPL_BIO, fdcintr, fdc); |
233 | |
234 | fdcattach(fdc); |
235 | } |
236 | |