1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2005-2008 M. Warner Losh <imp@FreeBSD.org>
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice unmodified, this list of conditions, and the following
11 * disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 */
29
30 #include <sys/param.h>
31 #include <sys/conf.h>
32 #include <sys/malloc.h>
33 #include <sys/systm.h>
34 #include <sys/uio.h>
35
36 #include <sys/bus.h>
37 #include <machine/bus.h>
38 #include <sys/rman.h>
39 #include <machine/resource.h>
40
41 #include <sys/pciio.h>
42 #include <dev/pci/pcivar.h>
43 #include <dev/pci/pcireg.h>
44 #include <dev/pci/pci_private.h>
45
46 #include <dev/cardbus/cardbusreg.h>
47 #include <dev/cardbus/cardbusvar.h>
48 #include <dev/cardbus/cardbus_cis.h>
49 #include <dev/pccard/pccard_cis.h>
50
51 static d_open_t cardbus_open;
52 static d_close_t cardbus_close;
53 static d_read_t cardbus_read;
54 static d_ioctl_t cardbus_ioctl;
55
56 static struct cdevsw cardbus_cdevsw = {
57 .d_version = D_VERSION,
58 .d_open = cardbus_open,
59 .d_close = cardbus_close,
60 .d_read = cardbus_read,
61 .d_ioctl = cardbus_ioctl,
62 .d_name = "cardbus"
63 };
64
65 static int
cardbus_build_cis(device_t cbdev,device_t child,int id,int len,uint8_t * tupledata,uint32_t start,uint32_t * off,struct tuple_callbacks * info,void * argp)66 cardbus_build_cis(device_t cbdev, device_t child, int id,
67 int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
68 struct tuple_callbacks *info, void *argp)
69 {
70 struct cis_buffer *cis;
71 int i;
72
73 cis = (struct cis_buffer *)argp;
74 /*
75 * CISTPL_END is a special case, it has no length field.
76 */
77 if (id == CISTPL_END) {
78 if (cis->len + 1 > sizeof(cis->buffer)) {
79 cis->len = 0;
80 return (ENOSPC);
81 }
82 cis->buffer[cis->len++] = id;
83 return (0);
84 }
85 if (cis->len + 2 + len > sizeof(cis->buffer)) {
86 cis->len = 0;
87 return (ENOSPC);
88 }
89 cis->buffer[cis->len++] = id;
90 cis->buffer[cis->len++] = len;
91 for (i = 0; i < len; i++)
92 cis->buffer[cis->len++] = tupledata[i];
93 return (0);
94 }
95
96 static int
cardbus_device_buffer_cis(device_t parent,device_t child,struct cis_buffer * cbp)97 cardbus_device_buffer_cis(device_t parent, device_t child,
98 struct cis_buffer *cbp)
99 {
100 struct tuple_callbacks cb[] = {
101 {CISTPL_GENERIC, "GENERIC", cardbus_build_cis}
102 };
103
104 return (cardbus_parse_cis(parent, child, cb, cbp));
105 }
106
107 int
cardbus_device_create(struct cardbus_softc * sc,struct cardbus_devinfo * devi,device_t parent,device_t child)108 cardbus_device_create(struct cardbus_softc *sc, struct cardbus_devinfo *devi,
109 device_t parent, device_t child)
110 {
111 uint32_t minor;
112 int unit;
113
114 cardbus_device_buffer_cis(parent, child, &devi->sc_cis);
115 minor = (device_get_unit(sc->sc_dev) << 8) + devi->pci.cfg.func;
116 unit = device_get_unit(sc->sc_dev);
117 devi->sc_cisdev = make_dev(&cardbus_cdevsw, minor, 0, 0, 0666,
118 "cardbus%d.%d.cis", unit, devi->pci.cfg.func);
119 if (devi->pci.cfg.func == 0)
120 make_dev_alias(devi->sc_cisdev, "cardbus%d.cis", unit);
121 devi->sc_cisdev->si_drv1 = devi;
122 return (0);
123 }
124
125 int
cardbus_device_destroy(struct cardbus_devinfo * devi)126 cardbus_device_destroy(struct cardbus_devinfo *devi)
127 {
128 if (devi->sc_cisdev)
129 destroy_dev(devi->sc_cisdev);
130 return (0);
131 }
132
133 static int
cardbus_open(struct cdev * dev,int oflags,int devtype,struct thread * td)134 cardbus_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
135 {
136
137 return (0);
138 }
139
140 static int
cardbus_close(struct cdev * dev,int fflags,int devtype,struct thread * td)141 cardbus_close(struct cdev *dev, int fflags, int devtype, struct thread *td)
142 {
143
144 return (0);
145 }
146
147 static int
cardbus_ioctl(struct cdev * dev,u_long cmd,caddr_t data,int fflag,struct thread * td)148 cardbus_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
149 struct thread *td)
150 {
151 return (ENOTTY);
152 }
153
154 static int
cardbus_read(struct cdev * dev,struct uio * uio,int ioflag)155 cardbus_read(struct cdev *dev, struct uio *uio, int ioflag)
156 {
157 struct cardbus_devinfo *devi;
158
159 devi = dev->si_drv1;
160 /* EOF */
161 if (uio->uio_offset >= devi->sc_cis.len)
162 return (0);
163 return (uiomove(devi->sc_cis.buffer + uio->uio_offset,
164 MIN(uio->uio_resid, devi->sc_cis.len - uio->uio_offset), uio));
165 }
166