addcom_isa.c revision 1.2.8.1 1 1.2.8.1 nathanw /* $NetBSD: addcom_isa.c,v 1.2.8.1 2001/11/14 19:14:43 nathanw Exp $ */
2 1.1 explorer
3 1.1 explorer /*
4 1.2 explorer * Copyright (c) 2000 Michael Graff. All rights reserved.
5 1.1 explorer * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
6 1.1 explorer * Copyright (c) 1995 Charles M. Hannum. All rights reserved.
7 1.1 explorer *
8 1.1 explorer * This code is derived from public-domain software written by
9 1.1 explorer * Roland McGrath, and information provided by David Muir Sharnoff.
10 1.1 explorer *
11 1.1 explorer * Redistribution and use in source and binary forms, with or without
12 1.1 explorer * modification, are permitted provided that the following conditions
13 1.1 explorer * are met:
14 1.1 explorer * 1. Redistributions of source code must retain the above copyright
15 1.1 explorer * notice, this list of conditions and the following disclaimer.
16 1.1 explorer * 2. Redistributions in binary form must reproduce the above copyright
17 1.1 explorer * notice, this list of conditions and the following disclaimer in the
18 1.1 explorer * documentation and/or other materials provided with the distribution.
19 1.1 explorer * 3. All advertising materials mentioning features or use of this software
20 1.1 explorer * must display the following acknowledgement:
21 1.1 explorer * This product includes software developed by Charles M. Hannum.
22 1.1 explorer * 4. The name of the author may not be used to endorse or promote products
23 1.1 explorer * derived from this software without specific prior written permission.
24 1.1 explorer *
25 1.1 explorer * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26 1.1 explorer * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 1.1 explorer * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 1.1 explorer * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29 1.1 explorer * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30 1.1 explorer * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 1.1 explorer * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 1.1 explorer * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 1.1 explorer * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 1.1 explorer * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 1.1 explorer */
36 1.1 explorer
37 1.1 explorer /*
38 1.1 explorer * This code was written and tested with the Addonics FlexPort 8S.
39 1.1 explorer * It has 8 ports, using 16650-compatible chips, sharing a single
40 1.1 explorer * interrupt.
41 1.1 explorer *
42 1.1 explorer * An interrupt status register exists at 0x240, according to the
43 1.2 explorer * skimpy documentation supplied. It doesn't change depending on
44 1.2 explorer * io base address, so only one of these cards can ever be used at
45 1.2 explorer * a time.
46 1.1 explorer *
47 1.1 explorer * This card is different from the boca or other cards in that ports
48 1.1 explorer * 0..5 are from addresses 0x108..0x137, and 6..7 are from 0x200..0x20f,
49 1.1 explorer * making a gap that the other cards do not have.
50 1.1 explorer *
51 1.1 explorer * The addresses which are documented are 0x108, 0x1108, 0x1d08, and
52 1.1 explorer * 0x8508, for the base (port 0) address.
53 1.1 explorer *
54 1.1 explorer * --Michael <explorer (at) netbsd.org> -- April 21, 2000
55 1.1 explorer */
56 1.2.8.1 nathanw
57 1.2.8.1 nathanw #include <sys/cdefs.h>
58 1.2.8.1 nathanw __KERNEL_RCSID(0, "$NetBSD: addcom_isa.c,v 1.2.8.1 2001/11/14 19:14:43 nathanw Exp $");
59 1.1 explorer
60 1.1 explorer #include <sys/param.h>
61 1.1 explorer #include <sys/systm.h>
62 1.1 explorer #include <sys/device.h>
63 1.1 explorer #include <sys/termios.h>
64 1.1 explorer
65 1.1 explorer #include <machine/bus.h>
66 1.1 explorer #include <machine/intr.h>
67 1.1 explorer
68 1.1 explorer #include <dev/ic/comreg.h>
69 1.1 explorer #include <dev/ic/comvar.h>
70 1.1 explorer
71 1.1 explorer #include <dev/isa/isavar.h>
72 1.1 explorer #include <dev/isa/com_multi.h>
73 1.1 explorer
74 1.1 explorer #define NSLAVES 8
75 1.1 explorer
76 1.1 explorer /*
77 1.2 explorer * Grr. This card always uses 0x420 for the status register, regardless
78 1.2 explorer * of io base address.
79 1.1 explorer */
80 1.2 explorer #define STATUS_IOADDR 0x420
81 1.2 explorer #define STATUS_SIZE 8 /* May be bogus... */
82 1.1 explorer
83 1.1 explorer struct addcom_softc {
84 1.1 explorer struct device sc_dev;
85 1.1 explorer void *sc_ih;
86 1.1 explorer
87 1.1 explorer bus_space_tag_t sc_iot;
88 1.1 explorer int sc_iobase;
89 1.1 explorer
90 1.1 explorer int sc_alive; /* mask of slave units attached */
91 1.1 explorer void *sc_slaves[NSLAVES]; /* com device unit numbers */
92 1.1 explorer bus_space_handle_t sc_slaveioh[NSLAVES];
93 1.1 explorer bus_space_handle_t sc_statusioh;
94 1.1 explorer };
95 1.1 explorer
96 1.1 explorer #define SLAVE_IOBASE_OFFSET 0x108
97 1.1 explorer static int slave_iobases[8] = {
98 1.1 explorer 0x108, /* port 0, base port */
99 1.1 explorer 0x110,
100 1.1 explorer 0x118,
101 1.1 explorer 0x120,
102 1.1 explorer 0x128,
103 1.1 explorer 0x130,
104 1.1 explorer 0x200, /* port 7, note address skip... */
105 1.1 explorer 0x208
106 1.1 explorer };
107 1.1 explorer
108 1.1 explorer int addcomprobe __P((struct device *, struct cfdata *, void *));
109 1.1 explorer void addcomattach __P((struct device *, struct device *, void *));
110 1.1 explorer int addcomintr __P((void *));
111 1.1 explorer int addcomprint __P((void *, const char *));
112 1.1 explorer
113 1.1 explorer struct cfattach addcom_isa_ca = {
114 1.1 explorer sizeof(struct addcom_softc), addcomprobe, addcomattach,
115 1.1 explorer };
116 1.1 explorer
117 1.1 explorer int
118 1.1 explorer addcomprobe(struct device *parent, struct cfdata *self, void *aux)
119 1.1 explorer {
120 1.1 explorer struct isa_attach_args *ia = aux;
121 1.1 explorer int iobase = ia->ia_iobase;
122 1.1 explorer bus_space_tag_t iot = ia->ia_iot;
123 1.1 explorer bus_space_handle_t ioh;
124 1.1 explorer int i, rv = 1;
125 1.1 explorer
126 1.1 explorer /*
127 1.1 explorer * Do the normal com probe for the first UART and assume
128 1.1 explorer * its presence, and the ability to map the other UARTS,
129 1.1 explorer * means there is a multiport board there.
130 1.1 explorer * XXX Needs more robustness.
131 1.1 explorer */
132 1.1 explorer
133 1.1 explorer /* Disallow wildcarded i/o address. */
134 1.1 explorer if (ia->ia_iobase == ISACF_PORT_DEFAULT)
135 1.1 explorer return (0);
136 1.1 explorer
137 1.1 explorer /* if the first port is in use as console, then it. */
138 1.1 explorer if (com_is_console(iot, iobase, 0))
139 1.1 explorer goto checkmappings;
140 1.1 explorer
141 1.1 explorer if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) {
142 1.1 explorer rv = 0;
143 1.1 explorer goto out;
144 1.1 explorer }
145 1.1 explorer rv = comprobe1(iot, ioh);
146 1.1 explorer bus_space_unmap(iot, ioh, COM_NPORTS);
147 1.1 explorer if (rv == 0)
148 1.1 explorer goto out;
149 1.1 explorer
150 1.1 explorer checkmappings:
151 1.1 explorer for (i = 1; i < NSLAVES; i++) {
152 1.1 explorer iobase += slave_iobases[i] - slave_iobases[i - 1];
153 1.1 explorer
154 1.1 explorer if (com_is_console(iot, iobase, 0))
155 1.1 explorer continue;
156 1.1 explorer
157 1.1 explorer if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) {
158 1.1 explorer rv = 0;
159 1.1 explorer goto out;
160 1.1 explorer }
161 1.1 explorer bus_space_unmap(iot, ioh, COM_NPORTS);
162 1.1 explorer }
163 1.1 explorer
164 1.1 explorer out:
165 1.1 explorer if (rv)
166 1.1 explorer ia->ia_iosize = NSLAVES * COM_NPORTS;
167 1.1 explorer return (rv);
168 1.1 explorer }
169 1.1 explorer
170 1.1 explorer int
171 1.1 explorer addcomprint(void *aux, const char *pnp)
172 1.1 explorer {
173 1.1 explorer struct commulti_attach_args *ca = aux;
174 1.1 explorer
175 1.1 explorer if (pnp)
176 1.1 explorer printf("com at %s", pnp);
177 1.1 explorer printf(" slave %d", ca->ca_slave);
178 1.1 explorer return (UNCONF);
179 1.1 explorer }
180 1.1 explorer
181 1.1 explorer void
182 1.1 explorer addcomattach(struct device *parent, struct device *self, void *aux)
183 1.1 explorer {
184 1.1 explorer struct addcom_softc *sc = (void *)self;
185 1.1 explorer struct isa_attach_args *ia = aux;
186 1.1 explorer struct commulti_attach_args ca;
187 1.1 explorer bus_space_tag_t iot = ia->ia_iot;
188 1.1 explorer int i, iobase;
189 1.1 explorer
190 1.1 explorer printf("\n");
191 1.1 explorer
192 1.1 explorer sc->sc_iot = ia->ia_iot;
193 1.1 explorer sc->sc_iobase = ia->ia_iobase;
194 1.1 explorer
195 1.2 explorer if (bus_space_map(iot, STATUS_IOADDR, STATUS_SIZE,
196 1.2 explorer 0, &sc->sc_statusioh)) {
197 1.2 explorer printf("%s: can't map status space\n", sc->sc_dev.dv_xname);
198 1.2 explorer return;
199 1.2 explorer }
200 1.2 explorer
201 1.1 explorer for (i = 0; i < NSLAVES; i++) {
202 1.1 explorer iobase = sc->sc_iobase
203 1.1 explorer + slave_iobases[i]
204 1.1 explorer - SLAVE_IOBASE_OFFSET;
205 1.1 explorer if (!com_is_console(iot, iobase, &sc->sc_slaveioh[i]) &&
206 1.1 explorer bus_space_map(iot, iobase, COM_NPORTS, 0,
207 1.1 explorer &sc->sc_slaveioh[i])) {
208 1.1 explorer printf("%s: can't map i/o space for slave %d\n",
209 1.1 explorer sc->sc_dev.dv_xname, i);
210 1.1 explorer return;
211 1.1 explorer }
212 1.1 explorer }
213 1.1 explorer
214 1.1 explorer for (i = 0; i < NSLAVES; i++) {
215 1.1 explorer ca.ca_slave = i;
216 1.1 explorer ca.ca_iot = sc->sc_iot;
217 1.1 explorer ca.ca_ioh = sc->sc_slaveioh[i];
218 1.1 explorer ca.ca_iobase = sc->sc_iobase
219 1.1 explorer + slave_iobases[i]
220 1.1 explorer - SLAVE_IOBASE_OFFSET;
221 1.1 explorer ca.ca_noien = 0;
222 1.1 explorer
223 1.1 explorer sc->sc_slaves[i] = config_found(self, &ca, addcomprint);
224 1.1 explorer if (sc->sc_slaves[i] != NULL)
225 1.1 explorer sc->sc_alive |= 1 << i;
226 1.1 explorer }
227 1.1 explorer
228 1.1 explorer sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
229 1.1 explorer IPL_SERIAL, addcomintr, sc);
230 1.1 explorer }
231 1.1 explorer
232 1.1 explorer int
233 1.1 explorer addcomintr(void *arg)
234 1.1 explorer {
235 1.1 explorer struct addcom_softc *sc = arg;
236 1.1 explorer bus_space_tag_t iot = sc->sc_iot;
237 1.1 explorer int alive = sc->sc_alive;
238 1.1 explorer int bits;
239 1.1 explorer
240 1.1 explorer bits = bus_space_read_1(iot, sc->sc_statusioh, 0) & alive;
241 1.1 explorer if (bits == 0)
242 1.1 explorer return (0);
243 1.1 explorer
244 1.1 explorer for (;;) {
245 1.1 explorer #define TRY(n) \
246 1.1 explorer if (bits & (1 << (n))) \
247 1.1 explorer comintr(sc->sc_slaves[n]);
248 1.1 explorer TRY(0);
249 1.1 explorer TRY(1);
250 1.1 explorer TRY(2);
251 1.1 explorer TRY(3);
252 1.1 explorer TRY(4);
253 1.1 explorer TRY(5);
254 1.1 explorer TRY(6);
255 1.1 explorer TRY(7);
256 1.1 explorer #undef TRY
257 1.1 explorer bits = bus_space_read_1(iot, sc->sc_statusioh, 0) & alive;
258 1.1 explorer if (bits == 0)
259 1.1 explorer return (1);
260 1.1 explorer }
261 1.1 explorer }
262