Do a major clean-up of the BUSDMA architecture. A large number of
[dragonfly.git] / sys / dev / serial / sio / sio_pccard.c
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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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
1f7ab7c9 33 * $DragonFly: src/sys/dev/serial/sio/sio_pccard.c,v 1.5 2006/10/25 20:56:02 dillon Exp $
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34 */
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/tty.h>
38#include <sys/proc.h>
39#include <sys/module.h>
40#include <sys/kernel.h>
41#include <sys/bus.h>
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42#include <sys/rman.h>
43#include <sys/timepps.h>
44
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45#include "sioreg.h"
46#include "sio_private.h"
47
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48#include <bus/pccard/pccarddevs.h>
49#include <bus/pccard/pccardreg.h>
50#include <bus/pccard/pccardvar.h>
51
52static int sio_pccard_attach(device_t dev);
53static int sio_pccard_match(device_t self);
54static int sio_pccard_detach(device_t dev);
55static int sio_pccard_probe(device_t dev);
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56
57static device_method_t sio_pccard_methods[] = {
58 /* Device interface */
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59 DEVMETHOD(device_probe, pccard_compat_probe),
60 DEVMETHOD(device_attach, pccard_compat_attach),
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61 DEVMETHOD(device_detach, sio_pccard_detach),
62
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63 /* Card interface */
64 DEVMETHOD(card_compat_match, sio_pccard_match),
65 DEVMETHOD(card_compat_probe, sio_pccard_probe),
66 DEVMETHOD(card_compat_attach, sio_pccard_attach),
67
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68 { 0, 0 }
69};
70
71static driver_t sio_pccard_driver = {
72 "sio",
73 sio_pccard_methods,
74 sizeof(struct com_s),
75};
76
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77static int
78sio_pccard_match(device_t dev)
79{
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80 u_int32_t fcn = PCCARD_FUNCTION_UNSPEC;
81
82 fcn = pccard_get_function(dev);
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83 /*
84 * If a serial card, we are likely the right driver. However,
85 * some serial cards are better servered by other drivers, so
86 * allow other drivers to claim it, if they want.
87 */
88 if (fcn == PCCARD_FUNCTION_SERIAL)
89 return (-100);
90
91 return(ENXIO);
92}
93
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94static int
95sio_pccard_probe(dev)
96 device_t dev;
97{
98 /* Do not probe IRQ - pccard doesn't turn on the interrupt line */
99 /* until bus_setup_intr */
100 SET_FLAG(dev, COM_C_NOPROBE);
101
102 return (sioprobe(dev, 0, 0UL));
103}
104
105static int
106sio_pccard_attach(dev)
107 device_t dev;
108{
109 return (sioattach(dev, 0, 0UL));
110}
111
112/*
113 * sio_detach - unload the driver and clear the table.
114 * XXX TODO:
115 * This is usually called when the card is ejected, but
116 * can be caused by a modunload of a controller driver.
117 * The idea is to reset the driver's view of the device
118 * and ensure that any driver entry points such as
119 * read and write do not hang.
120 */
121static int
122sio_pccard_detach(dev)
123 device_t dev;
124{
125 struct com_s *com;
126
127 com = (struct com_s *) device_get_softc(dev);
128 if (com == NULL) {
129 device_printf(dev, "NULL com in siounload\n");
130 return (0);
131 }
132 com->gone = 1;
133 if (com->irqres) {
134 bus_teardown_intr(dev, com->irqres, com->cookie);
135 bus_release_resource(dev, SYS_RES_IRQ, 0, com->irqres);
136 }
137 if (com->ioportres)
138 bus_release_resource(dev, SYS_RES_IOPORT, 0, com->ioportres);
139 if (com->tp && (com->tp->t_state & TS_ISOPEN)) {
140 device_printf(dev, "still open, forcing close\n");
141 com->tp->t_gen++;
142 ttyclose(com->tp);
143 ttwakeup(com->tp);
144 ttwwakeup(com->tp);
145 } else {
146 if (com->ibuf != NULL)
efda3bd0 147 kfree(com->ibuf, M_DEVBUF);
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148 }
149 device_printf(dev, "unloaded\n");
150 return (0);
151}
152
153DRIVER_MODULE(sio, pccard, sio_pccard_driver, sio_devclass, 0, 0);