lpt_ofisa.c revision 1.14 
1/*	$NetBSD: lpt_ofisa.c,v 1.14 2008/04/08 20:11:36 cegger 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 1.14 2008/04/08 20:11:36 cegger 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 <sys/intr.h>
49#include <sys/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(device_t, cfdata_t , void *);
66void lpt_ofisa_attach(device_t, device_t, void *);
67
68CFATTACH_DECL_NEW(lpt_ofisa, sizeof(struct lpt_ofisa_softc),
69    lpt_ofisa_probe, lpt_ofisa_attach, NULL, NULL);
70
71int
72lpt_ofisa_probe(device_t parent, cfdata_t cf, void *aux)
73{
74	struct ofisa_attach_args *aa = aux;
75	static const char *const compatible_strings[] = { "pnpPNP,401", NULL };
76	int rv = 0;
77
78	if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1)
79		rv = 5;
80#ifdef _LPT_OFISA_MD_MATCH
81	if (!rv)
82		rv = lpt_ofisa_md_match(parent, cf, aux);
83#endif
84	return (rv);
85}
86
87void
88lpt_ofisa_attach(device_t parent, device_t self, void *aux)
89{
90	struct lpt_ofisa_softc *osc = device_private(self);
91        struct lpt_softc *sc = &osc->sc_lpt;
92	struct ofisa_attach_args *aa = aux;
93	struct ofisa_reg_desc reg;
94	struct ofisa_intr_desc intr;
95	int n;
96
97	/*
98	 * We're living on an ofw.  We have to ask the OFW what our
99	 * registers and interrupts properties look like.
100	 *
101	 * We expect exactly one register region and one interrupt.
102	 */
103
104	sc->sc_dev = self;
105
106	n = ofisa_reg_get(aa->oba.oba_phandle, &reg, 1);
107#ifdef _LPT_OFISA_MD_REG_FIXUP
108	n = lpt_ofisa_md_reg_fixup(parent, self, aux, &reg, 1, n);
109#endif
110	if (n != 1) {
111		aprint_error(": error getting register data\n");
112		return;
113	}
114	if (reg.len != 4 && reg.len != 8) {
115		aprint_error(": weird register size (%lu, expected 4 or 8)\n",
116		    (unsigned long)reg.len);
117		return;
118	}
119
120	n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1);
121#ifdef _LPT_OFISA_MD_INTR_FIXUP
122	n = lpt_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n);
123#endif
124	if (n != 1) {
125		aprint_error(": error getting interrupt data\n");
126		return;
127	}
128
129	sc->sc_iot = (reg.type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt;
130	if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0, &sc->sc_ioh)) {
131		aprint_error(": can't map register space\n");
132                return;
133        }
134
135	osc->sc_ih = isa_intr_establish(aa->ic, intr.irq, intr.share,
136	    IPL_TTY, lptintr, sc);
137
138	aprint_normal("\n");
139
140	lpt_attach_subr(sc);
141
142#if 0
143	printf("%s: registers: ", device_xname(&sc->sc_dev));
144	ofisa_reg_print(&reg, 1);
145	printf("\n");
146	printf("%s: interrupts: ", device_xname(&sc->sc_dev));
147	ofisa_intr_print(&intr, 1);
148	printf("\n");
149#endif
150}
151