1/* $NetBSD: com_sableio.c,v 1.16 2021/05/07 16:58:34 thorpej 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 1.16 2021/05/07 16:58:34 thorpej 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/conf.h>
43#include <sys/file.h>
44#include <sys/uio.h>
45#include <sys/kernel.h>
46#include <sys/syslog.h>
47#include <sys/types.h>
48#include <sys/device.h>
49
50#include <machine/intr.h>
51#include <sys/bus.h>
52
53#include <dev/ic/comreg.h>
54#include <dev/ic/comvar.h>
55
56#include <dev/pci/pcivar.h>
57#include <dev/isa/isavar.h>
58
59#include <alpha/sableio/sableiovar.h>
60
61struct com_sableio_softc {
62	struct	com_softc sc_com;	/* real "com" softc */
63
64	/* STDIO-specific goo. */
65	void	*sc_ih;			/* interrupt handler */
66};
67
68static int	com_sableio_match(device_t, cfdata_t , void *);
69static void	com_sableio_attach(device_t, device_t, void *);
70
71CFATTACH_DECL_NEW(com_sableio, sizeof(struct com_sableio_softc),
72    com_sableio_match, com_sableio_attach, NULL, NULL);
73
74static int
75com_sableio_match(device_t parent, cfdata_t match, void *aux)
76{
77	struct sableio_attach_args *sa = aux;
78
79	/* Always present. */
80	if (strcmp(sa->sa_name, match->cf_name) == 0)
81		return (1);
82
83	return (0);
84}
85
86static void
87com_sableio_attach(device_t parent, device_t self, void *aux)
88{
89	struct com_sableio_softc *ssc = device_private(self);
90	struct com_softc *sc = &ssc->sc_com;
91	struct sableio_attach_args *sa = aux;
92	const char *intrstr;
93	char buf[PCI_INTRSTR_LEN];
94	bus_space_handle_t ioh;
95	pci_intr_handle_t ih;
96
97	sc->sc_dev = self;
98	if (com_is_console(sa->sa_iot, sa->sa_ioaddr, &ioh) == 0 &&
99	    bus_space_map(sa->sa_iot, sa->sa_ioaddr, COM_NPORTS, 0,
100		&ioh) != 0) {
101		aprint_error(": can't map i/o space\n");
102		return;
103	}
104	com_init_regs(&sc->sc_regs, sa->sa_iot, ioh, sa->sa_ioaddr);
105
106	sc->sc_frequency = COM_FREQ;
107
108	com_attach_subr(sc);
109
110	alpha_pci_intr_handle_init(&ih, sa->sa_sableirq[0], 0);
111
112	intrstr = pci_intr_string(sa->sa_pc, ih, buf, sizeof(buf));
113	ssc->sc_ih = pci_intr_establish(sa->sa_pc, ih, IPL_SERIAL,
114	    comintr, sc);
115	if (ssc->sc_ih == NULL) {
116		aprint_error_dev(self, "unable to establish interrupt");
117		if (intrstr != NULL)
118			aprint_error(" at %s", intrstr);
119		aprint_error("\n");
120		return;
121	}
122	aprint_normal_dev(self, "interrupting at %s\n", intrstr);
123
124	if (!pmf_device_register1(self, com_suspend, com_resume, com_cleanup)) {
125		aprint_error_dev(self, "could not establish shutdown hook");
126	}
127}
128