com_sableio.c revision 1.8 
1/* $NetBSD: com_sableio.c,v 1.8 2008/04/28 20:23:12 martin Exp $ */
2
3/*-
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
33
34__KERNEL_RCSID(0, "$NetBSD: com_sableio.c,v 1.8 2008/04/28 20:23:12 martin Exp $");
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/ioctl.h>
39#include <sys/select.h>
40#include <sys/tty.h>
41#include <sys/proc.h>
42#include <sys/user.h>
43#include <sys/conf.h>
44#include <sys/file.h>
45#include <sys/uio.h>
46#include <sys/kernel.h>
47#include <sys/syslog.h>
48#include <sys/types.h>
49#include <sys/device.h>
50
51#include <machine/intr.h>
52#include <machine/bus.h>
53
54#include <dev/ic/comreg.h>
55#include <dev/ic/comvar.h>
56
57#include <dev/pci/pcivar.h>
58#include <dev/isa/isavar.h>
59
60#include <alpha/sableio/sableiovar.h>
61
62struct com_sableio_softc {
63	struct	com_softc sc_com;	/* real "com" softc */
64
65	/* STDIO-specific goo. */
66	void	*sc_ih;			/* interrupt handler */
67};
68
69int	com_sableio_match(device_t, cfdata_t , void *);
70void	com_sableio_attach(device_t, device_t, void *);
71
72CFATTACH_DECL_NEW(com_sableio, sizeof(struct com_sableio_softc),
73    com_sableio_match, com_sableio_attach, NULL, NULL);
74
75int
76com_sableio_match(device_t parent, cfdata_t match, void *aux)
77{
78	struct sableio_attach_args *sa = aux;
79
80	/* Always present. */
81	if (strcmp(sa->sa_name, match->cf_name) == 0)
82		return (1);
83
84	return (0);
85}
86
87void
88com_sableio_attach(device_t parent, device_t self, void *aux)
89{
90	struct com_sableio_softc *ssc = device_private(self);
91	struct com_softc *sc = &ssc->sc_com;
92	struct sableio_attach_args *sa = aux;
93	const char *intrstr;
94	bus_space_handle_t ioh;
95
96	sc->sc_dev = self;
97	if (com_is_console(sa->sa_iot, sa->sa_ioaddr, &ioh) == 0 &&
98	    bus_space_map(sa->sa_iot, sa->sa_ioaddr, COM_NPORTS, 0,
99		&ioh) != 0) {
100		aprint_error(": can't map i/o space\n");
101		return;
102	}
103	COM_INIT_REGS(sc->sc_regs, sa->sa_iot, ioh, sa->sa_ioaddr);
104
105	sc->sc_frequency = COM_FREQ;
106
107	com_attach_subr(sc);
108
109	intrstr = pci_intr_string(sa->sa_pc, sa->sa_sableirq[0]);
110	ssc->sc_ih = pci_intr_establish(sa->sa_pc, sa->sa_sableirq[0],
111	    IPL_SERIAL, comintr, sc);
112	if (ssc->sc_ih == NULL) {
113		aprint_error_dev(self, "unable to establish interrupt");
114		if (intrstr != NULL)
115			aprint_normal(" at %s", intrstr);
116		aprint_normal("\n");
117		return;
118	}
119	aprint_normal_dev(self, "interrupting at %s\n", intrstr);
120
121	if (!pmf_device_register1(self, com_suspend, com_resume, com_cleanup)) {
122		aprint_error_dev(self, "could not establish shutdown hook");
123	}
124}
125