1/*	$NetBSD: lpt_puc.c,v 1.19 2018/11/30 16:26:59 jmcneill Exp $	*/
2
3/*
4 * Copyright (c) 1998 Christopher G. Demetriou.  All rights reserved.
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, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *      This product includes software developed by Christopher G. Demetriou
17 *	for the NetBSD Project.
18 * 4. The name of the author may not be used to endorse or promote products
19 *    derived from this software without specific prior written permission
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33/*
34 * Machine-independent parallel port ('lpt') driver attachment to "PCI
35 * Universal Communications" controller driver.
36 *
37 * Author: Christopher G. Demetriou, May 17, 1998.
38 */
39
40#include <sys/cdefs.h>
41__KERNEL_RCSID(0, "$NetBSD: lpt_puc.c,v 1.19 2018/11/30 16:26:59 jmcneill Exp $");
42
43#include <sys/param.h>
44#include <sys/systm.h>
45#include <sys/device.h>
46
47#include <sys/bus.h>
48
49#include <dev/pci/pcivar.h>
50#include <dev/pci/pucvar.h>
51#include <dev/ic/lptvar.h>
52
53static int
54lpt_puc_probe(device_t parent, cfdata_t match, void *aux)
55{
56	struct puc_attach_args *aa = aux;
57
58	/*
59	 * Locators already matched, just check the type.
60	 */
61	if (aa->type != PUC_PORT_TYPE_LPT)
62		return (0);
63
64	return (1);
65}
66
67static void
68lpt_puc_attach(device_t parent, device_t self, void *aux)
69{
70	struct lpt_softc *sc = device_private(self);
71	struct puc_attach_args *aa = aux;
72	const char *intrstr;
73	char intrbuf[PCI_INTRSTR_LEN];
74
75	sc->sc_dev = self;
76	sc->sc_iot = aa->t;
77	sc->sc_ioh = aa->h;
78
79	if (aa->poll) {
80		aprint_error(": polling not supported\n");
81		return;
82	}
83
84	aprint_naive(": Parallel port");
85	aprint_normal(": ");
86
87	intrstr = pci_intr_string(aa->pc, aa->intrhandle, intrbuf,
88	    sizeof(intrbuf));
89	sc->sc_ih = pci_intr_establish_xname(aa->pc, aa->intrhandle, IPL_TTY,
90	    lptintr, sc, device_xname(self));
91	if (sc->sc_ih == NULL) {
92		aprint_error("couldn't establish interrupt");
93		if (intrstr != NULL)
94			aprint_error(" at %s", intrstr);
95		aprint_error("\n");
96		return;
97	}
98
99#if defined(amd64) || defined(i386)
100	/*
101	 * Parallel ports are sometimes used for improvised GPIO by
102	 * userspace programs which need to know the port's I/O address.
103	 * Print the address here so the user doesn't have to dig through
104	 * PCI configuration space to find it.
105	*/
106	if (aa->h < 0x10000)
107		aprint_normal("ioaddr 0x%04lx, ", aa->h);
108#endif
109	aprint_normal("interrupting at %s\n", intrstr);
110
111	if (!pmf_device_register(self, NULL, NULL))
112		aprint_error_dev(self, "couldn't establish power handler\n");
113
114	lpt_attach_subr(sc);
115}
116
117CFATTACH_DECL_NEW(lpt_puc, sizeof(struct lpt_softc),
118    lpt_puc_probe, lpt_puc_attach, NULL, NULL);
119