1 /*-
2 * Copyright (c) 1991 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/tty.h>
33 #include <sys/proc.h>
34 #include <sys/malloc.h>
35 #include <sys/module.h>
36 #include <sys/kernel.h>
37 #include <sys/bus.h>
38 #include <sys/rman.h>
39 #include <sys/timepps.h>
40
41 #include "sioreg.h"
42 #include "sio_private.h"
43
44 #include <bus/pccard/pccard_cis.h>
45 #include <bus/pccard/pccardreg.h>
46 #include <bus/pccard/pccardvar.h>
47
48 #include "pccarddevs.h"
49
50 static int sio_pccard_attach(device_t dev);
51 static int sio_pccard_match(device_t self);
52 static int sio_pccard_detach(device_t dev);
53 static int sio_pccard_probe(device_t dev);
54
55 static device_method_t sio_pccard_methods[] = {
56 /* Device interface */
57 DEVMETHOD(device_probe, pccard_compat_probe),
58 DEVMETHOD(device_attach, pccard_compat_attach),
59 DEVMETHOD(device_detach, sio_pccard_detach),
60
61 /* Card interface */
62 DEVMETHOD(card_compat_match, sio_pccard_match),
63 DEVMETHOD(card_compat_probe, sio_pccard_probe),
64 DEVMETHOD(card_compat_attach, sio_pccard_attach),
65
66 DEVMETHOD_END
67 };
68
69 static driver_t sio_pccard_driver = {
70 "sio",
71 sio_pccard_methods,
72 sizeof(struct com_s),
73 };
74
75 static int
sio_pccard_match(device_t dev)76 sio_pccard_match(device_t dev)
77 {
78 u_int32_t fcn = PCCARD_FUNCTION_UNSPEC;
79
80 fcn = pccard_get_function(dev);
81 /*
82 * If a serial card, we are likely the right driver. However,
83 * some serial cards are better servered by other drivers, so
84 * allow other drivers to claim it, if they want.
85 */
86 if (fcn == PCCARD_FUNCTION_SERIAL)
87 return (-100);
88
89 return(ENXIO);
90 }
91
92 static int
sio_pccard_probe(device_t dev)93 sio_pccard_probe(device_t dev)
94 {
95 /* Do not probe IRQ - pccard doesn't turn on the interrupt line */
96 /* until bus_setup_intr */
97 SET_FLAG(dev, COM_C_NOPROBE);
98
99 return (sioprobe(dev, 0, 0UL));
100 }
101
102 static int
sio_pccard_attach(device_t dev)103 sio_pccard_attach(device_t dev)
104 {
105 return (sioattach(dev, 0, 0UL));
106 }
107
108 /*
109 * sio_detach - unload the driver and clear the table.
110 * XXX TODO:
111 * This is usually called when the card is ejected, but
112 * can be caused by a modunload of a controller driver.
113 * The idea is to reset the driver's view of the device
114 * and ensure that any driver entry points such as
115 * read and write do not hang.
116 */
117 static int
sio_pccard_detach(device_t dev)118 sio_pccard_detach(device_t dev)
119 {
120 struct com_s *com;
121
122 com = (struct com_s *) device_get_softc(dev);
123 if (com == NULL) {
124 device_printf(dev, "NULL com in siounload\n");
125 return (0);
126 }
127 com->gone = 1;
128 if (com->irqres) {
129 bus_teardown_intr(dev, com->irqres, com->cookie);
130 bus_release_resource(dev, SYS_RES_IRQ, 0, com->irqres);
131 }
132 if (com->ioportres)
133 bus_release_resource(dev, SYS_RES_IOPORT, 0, com->ioportres);
134 if (com->tp && (com->tp->t_state & TS_ISOPEN)) {
135 device_printf(dev, "still open, forcing close\n");
136 ttyclose(com->tp);
137 } else {
138 if (com->ibuf != NULL)
139 kfree(com->ibuf, M_DEVBUF);
140 }
141 device_printf(dev, "unloaded\n");
142 return (0);
143 }
144
145 DRIVER_MODULE(sio, pccard, sio_pccard_driver, sio_devclass, NULL, NULL);
146