lpt_ofisa.c revision 1.9 
1/*	$NetBSD: lpt_ofisa.c,v 1.9 2005/02/27 00:27:32 perry Exp $	*/
2
3/*
4 * Copyright 1997, 1998
5 * Digital Equipment Corporation. All rights reserved.
6 *
7 * This software is furnished under license and may be used and
8 * copied only in accordance with the following terms and conditions.
9 * Subject to these conditions, you may download, copy, install,
10 * use, modify and distribute this software in source and/or binary
11 * form. No title or ownership is transferred hereby.
12 *
13 * 1) Any source code used, modified or distributed must reproduce
14 *    and retain this copyright notice and list of conditions as
15 *    they appear in the source file.
16 *
17 * 2) No right is granted to use any trade name, trademark, or logo of
18 *    Digital Equipment Corporation. Neither the "Digital Equipment
19 *    Corporation" name nor any trademark or logo of Digital Equipment
20 *    Corporation may be used to endorse or promote products derived
21 *    from this software without the prior written permission of
22 *    Digital Equipment Corporation.
23 *
24 * 3) This software is provided "AS-IS" and any express or implied
25 *    warranties, including but not limited to, any implied warranties
26 *    of merchantability, fitness for a particular purpose, or
27 *    non-infringement are disclaimed. In no event shall DIGITAL be
28 *    liable for any damages whatsoever, and in particular, DIGITAL
29 *    shall not be liable for special, indirect, consequential, or
30 *    incidental damages or damages for lost profits, loss of
31 *    revenue or loss of use, whether such damages arise in contract,
32 *    negligence, tort, under statute, in equity, at law or otherwise,
33 *    even if advised of the possibility of such damage.
34 */
35
36/*
37 * OFW Attachment for 'lpt' parallel port driver
38 */
39
40#include <sys/cdefs.h>
41__KERNEL_RCSID(0, "$NetBSD: lpt_ofisa.c,v 1.9 2005/02/27 00:27:32 perry Exp $");
42
43#include <sys/param.h>
44#include <sys/device.h>
45#include <sys/systm.h>
46#include <sys/tty.h>
47
48#include <machine/intr.h>
49#include <machine/bus.h>
50
51#include <dev/ofw/openfirm.h>
52#include <dev/isa/isavar.h>
53#include <dev/ofisa/ofisavar.h>
54
55#include <dev/ic/lptreg.h>
56#include <dev/ic/lptvar.h>
57
58struct lpt_ofisa_softc {
59	struct	lpt_softc sc_lpt;	/* real "lpt" softc */
60
61	/* OFW ISA-specific goo. */
62	void	*sc_ih;			/* interrupt handler */
63};
64
65int lpt_ofisa_probe(struct device *, struct cfdata *, void *);
66void lpt_ofisa_attach(struct device *, struct device *, void *);
67
68CFATTACH_DECL(lpt_ofisa, sizeof(struct lpt_ofisa_softc),
69    lpt_ofisa_probe, lpt_ofisa_attach, NULL, NULL);
70
71int
72lpt_ofisa_probe(parent, cf, aux)
73	struct device *parent;
74	struct cfdata *cf;
75	void *aux;
76{
77	struct ofisa_attach_args *aa = aux;
78	static const char *const compatible_strings[] = { "pnpPNP,401", NULL };
79	int rv = 0;
80
81	if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1)
82		rv = 5;
83#ifdef _LPT_OFISA_MD_MATCH
84	if (!rv)
85		rv = lpt_ofisa_md_match(parent, cf, aux);
86#endif
87	return (rv);
88}
89
90void
91lpt_ofisa_attach(parent, self, aux)
92	struct device *parent, *self;
93	void *aux;
94{
95	struct lpt_ofisa_softc *osc = (void *)self;
96        struct lpt_softc *sc = &osc->sc_lpt;
97	struct ofisa_attach_args *aa = aux;
98	struct ofisa_reg_desc reg;
99	struct ofisa_intr_desc intr;
100	int n;
101
102	/*
103	 * We're living on an ofw.  We have to ask the OFW what our
104	 * registers and interrupts properties look like.
105	 *
106	 * We expect exactly one register region and one interrupt.
107	 */
108
109	n = ofisa_reg_get(aa->oba.oba_phandle, &reg, 1);
110#ifdef _LPT_OFISA_MD_REG_FIXUP
111	n = lpt_ofisa_md_reg_fixup(parent, self, aux, &reg, 1, n);
112#endif
113	if (n != 1) {
114		printf(": error getting register data\n");
115		return;
116	}
117	if (reg.len != 4 && reg.len != 8) {
118		printf(": weird register size (%lu, expected 4 or 8)\n",
119		    (unsigned long)reg.len);
120		return;
121	}
122
123	n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1);
124#ifdef _LPT_OFISA_MD_INTR_FIXUP
125	n = lpt_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n);
126#endif
127	if (n != 1) {
128		printf(": error getting interrupt data\n");
129		return;
130	}
131
132	sc->sc_iot = (reg.type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt;
133	if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0, &sc->sc_ioh)) {
134		printf(": can't map register space\n");
135                return;
136        }
137
138	osc->sc_ih = isa_intr_establish(aa->ic, intr.irq, intr.share,
139	    IPL_TTY, lptintr, sc);
140
141	printf("\n");
142
143	lpt_attach_subr(sc);
144
145#if 0
146	printf("%s: registers: ", sc->sc_dev.dv_xname);
147	ofisa_reg_print(&reg, 1);
148	printf("\n");
149	printf("%s: interrupts: ", sc->sc_dev.dv_xname);
150	ofisa_intr_print(&intr, 1);
151	printf("\n");
152#endif
153}
154