1 | /* $NetBSD: lpt_puc.c,v 1.17 2014/03/29 19:28:25 christos 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 1.17 2014/03/29 19:28:25 christos 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 |
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 |
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 | aprint_naive(": Parallel port" ); |
80 | aprint_normal(": " ); |
81 | |
82 | intrstr = pci_intr_string(aa->pc, aa->intrhandle, intrbuf, sizeof(intrbuf)); |
83 | sc->sc_ih = pci_intr_establish(aa->pc, aa->intrhandle, IPL_TTY, |
84 | lptintr, sc); |
85 | if (sc->sc_ih == NULL) { |
86 | aprint_error("couldn't establish interrupt" ); |
87 | if (intrstr != NULL) |
88 | aprint_error(" at %s" , intrstr); |
89 | aprint_error("\n" ); |
90 | return; |
91 | } |
92 | |
93 | #if defined(amd64) || defined(i386) |
94 | /* |
95 | * Parallel ports are sometimes used for improvised GPIO by |
96 | * userspace programs which need to know the port's I/O address. |
97 | * Print the address here so the user doesn't have to dig through |
98 | * PCI configuration space to find it. |
99 | */ |
100 | if (aa->h < 0x10000) |
101 | aprint_normal("ioaddr 0x%04lx, " , aa->h); |
102 | #endif |
103 | aprint_normal("interrupting at %s\n" , intrstr); |
104 | |
105 | if (!pmf_device_register(self, NULL, NULL)) |
106 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
107 | |
108 | lpt_attach_subr(sc); |
109 | } |
110 | |
111 | CFATTACH_DECL_NEW(lpt_puc, sizeof(struct lpt_softc), |
112 | lpt_puc_probe, lpt_puc_attach, NULL, NULL); |
113 | |