FreeBSD/Linux Kernel Cross Reference
sys/dev/mca/com_mca.c
1 /* $NetBSD: com_mca.c,v 1.10 2003/08/07 16:31:08 agc Exp $ */
2
3 /*-
4 * Copyright (c) 2001 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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 /*-
40 * Copyright (c) 1991 The Regents of the University of California.
41 * All rights reserved.
42 *
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
45 * are met:
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. Neither the name of the University nor the names of its contributors
52 * may be used to endorse or promote products derived from this software
53 * without specific prior written permission.
54 *
55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65 * SUCH DAMAGE.
66 *
67 * @(#)com.c 7.5 (Berkeley) 5/16/91
68 */
69
70 /*
71 * This driver attaches serial port boards and internal modems.
72 */
73
74 #include <sys/cdefs.h>
75 __KERNEL_RCSID(0, "$NetBSD: com_mca.c,v 1.10 2003/08/07 16:31:08 agc Exp $");
76
77 #include <sys/param.h>
78 #include <sys/systm.h>
79 #include <sys/ioctl.h>
80 #include <sys/select.h>
81 #include <sys/tty.h>
82 #include <sys/proc.h>
83 #include <sys/user.h>
84 #include <sys/file.h>
85 #include <sys/uio.h>
86 #include <sys/kernel.h>
87 #include <sys/syslog.h>
88 #include <sys/device.h>
89
90 #include <machine/intr.h>
91 #include <machine/bus.h>
92
93 #include <dev/ic/comreg.h>
94 #include <dev/ic/comvar.h>
95
96 #include <dev/mca/mcavar.h>
97 #include <dev/mca/mcadevs.h>
98
99 struct com_mca_softc {
100 struct com_softc sc_com; /* real "com" softc */
101
102 /* MCA-specific goo. */
103 void *sc_ih; /* interrupt handler */
104 };
105
106 int com_mca_probe __P((struct device *, struct cfdata *, void *));
107 void com_mca_attach __P((struct device *, struct device *, void *));
108 void com_mca_cleanup __P((void *));
109
110 static int ibm_modem_getcfg __P((struct mca_attach_args *, int *, int *));
111 static int neocom1_getcfg __P((struct mca_attach_args *, int *, int *));
112 static int ibm_mpcom_getcfg __P((struct mca_attach_args *, int *, int *));
113
114 CFATTACH_DECL(com_mca, sizeof(struct com_mca_softc),
115 com_mca_probe, com_mca_attach, NULL, NULL);
116
117 static const struct com_mca_product {
118 u_int32_t cp_prodid; /* MCA product ID */
119 const char *cp_name; /* device name */
120 int (*cp_getcfg) __P((struct mca_attach_args *, int *iobase, int *irq));
121 /* get device i/o base and irq */
122 } com_mca_products[] = {
123 { MCA_PRODUCT_IBM_MOD, "IBM Internal Modem", ibm_modem_getcfg },
124 { MCA_PRODUCT_NEOCOM1, "NeoTecH Single RS-232 Async. Adapter, SM110",
125 neocom1_getcfg },
126 { MCA_PRODUCT_IBM_MPCOM,"IBM Multi-Protocol Communications Adapter",
127 ibm_mpcom_getcfg },
128 { 0, NULL, NULL },
129 };
130
131 static const struct com_mca_product *com_mca_lookup __P((int));
132
133 static const struct com_mca_product *
134 com_mca_lookup(ma_id)
135 int ma_id;
136 {
137 const struct com_mca_product *cpp;
138
139 for (cpp = com_mca_products; cpp->cp_name != NULL; cpp++)
140 if (cpp->cp_prodid == ma_id)
141 return (cpp);
142
143 return (NULL);
144 }
145
146 int
147 com_mca_probe(parent, match, aux)
148 struct device *parent;
149 struct cfdata *match;
150 void *aux;
151 {
152 struct mca_attach_args *ma = aux;
153
154 if (com_mca_lookup(ma->ma_id))
155 return (1);
156
157 return (0);
158 }
159
160 void
161 com_mca_attach(parent, self, aux)
162 struct device *parent, *self;
163 void *aux;
164 {
165 struct com_mca_softc *isc = (void *)self;
166 struct com_softc *sc = &isc->sc_com;
167 int iobase, irq;
168 struct mca_attach_args *ma = aux;
169 const struct com_mca_product *cpp;
170
171 cpp = com_mca_lookup(ma->ma_id);
172
173 /* get iobase and irq */
174 if ((*cpp->cp_getcfg)(ma, &iobase, &irq))
175 return;
176
177 if (bus_space_map(ma->ma_iot, iobase, COM_NPORTS, 0, &sc->sc_ioh)) {
178 printf(": can't map i/o space\n");
179 return;
180 }
181
182 sc->sc_frequency = COM_FREQ;
183 sc->sc_iot = ma->ma_iot;
184 sc->sc_iobase = iobase;
185
186 printf(" slot %d i/o %#x-%#x irq %d", ma->ma_slot + 1,
187 iobase, iobase + COM_NPORTS - 1, irq);
188
189 com_attach_subr(sc);
190
191 printf("%s: %s\n", sc->sc_dev.dv_xname, cpp->cp_name);
192
193 isc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_SERIAL,
194 comintr, sc);
195 if (isc->sc_ih == NULL) {
196 printf("%s: couldn't establish interrupt handler\n",
197 sc->sc_dev.dv_xname);
198 return;
199 }
200
201 /*
202 * Shutdown hook for buggy BIOSs that don't recognize the UART
203 * without a disabled FIFO.
204 * XXX is this necessary on MCA ? --- jdolecek
205 */
206 if (shutdownhook_establish(com_mca_cleanup, sc) == NULL)
207 panic("com_mca_attach: could not establish shutdown hook");
208 }
209
210 void
211 com_mca_cleanup(arg)
212 void *arg;
213 {
214 struct com_softc *sc = arg;
215
216 if (ISSET(sc->sc_hwflags, COM_HW_FIFO))
217 bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0);
218 }
219
220 /* map serial_X to iobase and irq */
221 static const struct {
222 int iobase;
223 int irq;
224 } MCA_SERIAL[] = {
225 { 0x03f8, 4 }, /* SERIAL_1 */
226 { 0x02f8, 3 }, /* SERIAL_2 */
227 { 0x3220, 3 }, /* SERIAL_3 */
228 { 0x3228, 3 }, /* SERIAL_4 */
229 { 0x4220, 3 }, /* SERIAL_5 */
230 { 0x4228, 3 }, /* SERIAL_6 */
231 { 0x5220, 3 }, /* SERIAL_7 */
232 { 0x5228, 3 }, /* SERIAL_8 */
233 };
234
235 /*
236 * Get config for IBM Internal Modem (ID 0xEDFF). This beast doesn't
237 * seem to support even AT commands, it's good as example for adding
238 * other stuff though.
239 */
240 static int
241 ibm_modem_getcfg(ma, iobasep, irqp)
242 struct mca_attach_args *ma;
243 int *iobasep, *irqp;
244 {
245 int pos2;
246 int snum;
247
248 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
249
250 /*
251 * POS register 2: (adf pos0)
252 * 7 6 5 4 3 2 1 0
253 * \__/ \__ enable: 0=adapter disabled, 1=adapter enabled
254 * \_____ Serial Configuration: XX=SERIAL_XX
255 */
256
257 snum = (pos2 & 0x0e) >> 1;
258
259 *iobasep = MCA_SERIAL[snum].iobase;
260 *irqp = MCA_SERIAL[snum].irq;
261
262 return (0);
263 }
264
265 /*
266 * Get configuration for NeoTecH Single RS-232 Async. Adapter, SM110.
267 */
268 static int
269 neocom1_getcfg(ma, iobasep, irqp)
270 struct mca_attach_args *ma;
271 int *iobasep, *irqp;
272 {
273 int pos2, pos3, pos4;
274 static const int neotech_irq[] = { 12, 9, 4, 3 };
275
276 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
277 pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3);
278 pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4);
279
280 /*
281 * POS register 2: (adf pos0)
282 * 7 6 5 4 3 2 1 0
283 * 1 \_/ \__ enable: 0=adapter disabled, 1=adapter enabled
284 * \____ IRQ: 11=3 10=4 01=9 00=12
285 *
286 * POS register 3: (adf pos1)
287 * 7 6 5 4 3 2 1 0
288 * \______/
289 * \_________ I/O Address: bits 7-3
290 *
291 * POS register 4: (adf pos2)
292 * 7 6 5 4 3 2 1 0
293 * \_____________/
294 * \__ I/O Address: bits 15-8
295 */
296
297 *iobasep = (pos4 << 8) | (pos3 & 0xf8);
298 *irqp = neotech_irq[(pos2 & 0x06) >> 1];
299
300 return (0);
301 }
302
303 /*
304 * Get configuration for IBM Multi-Protocol Communications Adapter.
305 * We only support SERIAL mode, bail out if set to SDLC or BISYNC.
306 */
307 static int
308 ibm_mpcom_getcfg(ma, iobasep, irqp)
309 struct mca_attach_args *ma;
310 int *iobasep, *irqp;
311 {
312 int snum, pos2;
313
314 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
315
316 /*
317 * For SERIAL mode, bit 4 has to be 0.
318 *
319 * POS register 2: (adf pos0)
320 * 7 6 5 4 3 2 1 0
321 * 0 \__/ \__ enable: 0=adapter disabled, 1=adapter enabled
322 * \_____ Serial Configuration: XX=SERIAL_XX
323 */
324
325 if (pos2 & 0x10) {
326 printf(": not set to SERIAL mode, ignored\n");
327 return (1);
328 }
329
330 snum = (pos2 & 0x0e) >> 1;
331
332 *iobasep = MCA_SERIAL[snum].iobase;
333 *irqp = MCA_SERIAL[snum].irq;
334
335 return (0);
336 }
Cache object: 52e98182c6cefb21f2e2d10e10fcbc4f
|