1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2005-2008, M. Warner Losh
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice unmodified, this list of conditions, and the following
12 *    disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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/cdefs.h>
31__FBSDID("$FreeBSD$");
32
33#include <sys/param.h>
34#include <sys/conf.h>
35#include <sys/malloc.h>
36#include <sys/systm.h>
37#include <sys/uio.h>
38
39#include <sys/bus.h>
40#include <machine/bus.h>
41#include <sys/rman.h>
42#include <machine/resource.h>
43
44#include <sys/pciio.h>
45#include <dev/pci/pcivar.h>
46#include <dev/pci/pcireg.h>
47#include <dev/pci/pci_private.h>
48
49#include <dev/cardbus/cardbusreg.h>
50#include <dev/cardbus/cardbusvar.h>
51#include <dev/cardbus/cardbus_cis.h>
52#include <dev/pccard/pccard_cis.h>
53
54static	d_open_t	cardbus_open;
55static	d_close_t	cardbus_close;
56static	d_read_t	cardbus_read;
57static	d_ioctl_t	cardbus_ioctl;
58
59static struct cdevsw cardbus_cdevsw = {
60	.d_version =	D_VERSION,
61	.d_open =	cardbus_open,
62	.d_close =	cardbus_close,
63	.d_read =	cardbus_read,
64	.d_ioctl =	cardbus_ioctl,
65	.d_name =	"cardbus"
66};
67
68static int
69cardbus_build_cis(device_t cbdev, device_t child, int id,
70    int len, uint8_t *tupledata, uint32_t start, uint32_t *off,
71    struct tuple_callbacks *info, void *argp)
72{
73	struct cis_buffer *cis;
74	int i;
75
76	cis = (struct cis_buffer *)argp;
77	/*
78	 * CISTPL_END is a special case, it has no length field.
79	 */
80	if (id == CISTPL_END) {
81		if (cis->len + 1 > sizeof(cis->buffer)) {
82			cis->len = 0;
83			return (ENOSPC);
84		}
85		cis->buffer[cis->len++] = id;
86		return (0);
87	}
88	if (cis->len + 2 + len > sizeof(cis->buffer)) {
89		cis->len = 0;
90		return (ENOSPC);
91	}
92	cis->buffer[cis->len++] = id;
93	cis->buffer[cis->len++] = len;
94	for (i = 0; i < len; i++)
95		cis->buffer[cis->len++] = tupledata[i];
96	return (0);
97}
98
99static int
100cardbus_device_buffer_cis(device_t parent, device_t child,
101    struct cis_buffer *cbp)
102{
103	struct tuple_callbacks cb[] = {
104		{CISTPL_GENERIC, "GENERIC", cardbus_build_cis}
105	};
106
107	return (cardbus_parse_cis(parent, child, cb, cbp));
108}
109
110int
111cardbus_device_create(struct cardbus_softc *sc, struct cardbus_devinfo *devi,
112    device_t parent, device_t child)
113{
114	uint32_t minor;
115	int unit;
116
117	cardbus_device_buffer_cis(parent, child, &devi->sc_cis);
118	minor = (device_get_unit(sc->sc_dev) << 8) + devi->pci.cfg.func;
119	unit = device_get_unit(sc->sc_dev);
120	devi->sc_cisdev = make_dev(&cardbus_cdevsw, minor, 0, 0, 0666,
121	    "cardbus%d.%d.cis", unit, devi->pci.cfg.func);
122	if (devi->pci.cfg.func == 0)
123		make_dev_alias(devi->sc_cisdev, "cardbus%d.cis", unit);
124	devi->sc_cisdev->si_drv1 = devi;
125	return (0);
126}
127
128int
129cardbus_device_destroy(struct cardbus_devinfo *devi)
130{
131	if (devi->sc_cisdev)
132		destroy_dev(devi->sc_cisdev);
133	return (0);
134}
135
136static	int
137cardbus_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
138{
139
140	return (0);
141}
142
143static	int
144cardbus_close(struct cdev *dev, int fflags, int devtype, struct thread *td)
145{
146
147	return (0);
148}
149
150static	int
151cardbus_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
152    struct thread *td)
153{
154	return (ENOTTY);
155}
156
157static	int
158cardbus_read(struct cdev *dev, struct uio *uio, int ioflag)
159{
160	struct cardbus_devinfo *devi;
161
162	devi = dev->si_drv1;
163	/* EOF */
164	if (uio->uio_offset >= devi->sc_cis.len)
165		return (0);
166	return (uiomove(devi->sc_cis.buffer + uio->uio_offset,
167	  MIN(uio->uio_resid, devi->sc_cis.len - uio->uio_offset), uio));
168}
169