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
53 static int
lpt_puc_probe(device_t parent,cfdata_t match,void * aux)54 lpt_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
67 static void
lpt_puc_attach(device_t parent,device_t self,void * aux)68 lpt_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
117 CFATTACH_DECL_NEW(lpt_puc, sizeof(struct lpt_softc),
118 lpt_puc_probe, lpt_puc_attach, NULL, NULL);
119