xref: /netbsd-src/sys/arch/algor/dev/com_mainbus.c (revision 6d4870476f69938cdd065da8ea9ad989cef459f4)
1 /*	$NetBSD: com_mainbus.c,v 1.15 2018/12/08 17:46:09 thorpej Exp $	*/
2 
3 /*-
4  * Copyright (c) 2001 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 "opt_algor_p4032.h"
33 
34 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
35 
36 __KERNEL_RCSID(0, "$NetBSD: com_mainbus.c,v 1.15 2018/12/08 17:46:09 thorpej Exp $");
37 
38 #include <sys/param.h>
39 #include <sys/bus.h>
40 #include <sys/conf.h>
41 #include <sys/device.h>
42 #include <sys/file.h>
43 #include <sys/intr.h>
44 #include <sys/ioctl.h>
45 #include <sys/kernel.h>
46 #include <sys/proc.h>
47 #include <sys/select.h>
48 #include <sys/syslog.h>
49 #include <sys/systm.h>
50 #include <sys/tty.h>
51 #include <sys/uio.h>
52 
53 #include <algor/autoconf.h>
54 
55 #include <dev/ic/comreg.h>
56 #include <dev/ic/comvar.h>
57 
58 struct com_mainbus_softc {
59 	struct	com_softc sc_com;	/* real "com" softc */
60 
61 	/* mainbus-specific goo. */
62 	void	*sc_ih;			/* interrupt handler */
63 };
64 
65 static int	com_mainbus_match(device_t, cfdata_t , void *);
66 static void	com_mainbus_attach(device_t, device_t, void *);
67 
68 CFATTACH_DECL_NEW(com_mainbus, sizeof(struct com_mainbus_softc),
69     com_mainbus_match, com_mainbus_attach, NULL, NULL);
70 
71 int
com_mainbus_match(device_t parent,cfdata_t match,void * aux)72 com_mainbus_match(device_t parent, cfdata_t match, void *aux)
73 {
74 	struct mainbus_attach_args *ma = aux;
75 
76 	/* Always present. */
77 	if (strcmp(ma->ma_name, match->cf_name) == 0)
78 		return (1);
79 
80 	return (0);
81 }
82 
83 void
com_mainbus_attach(device_t parent,device_t self,void * aux)84 com_mainbus_attach(device_t parent, device_t self, void *aux)
85 {
86 	struct com_mainbus_softc *msc = device_private(self);
87 	struct com_softc *sc = &msc->sc_com;
88 	struct mainbus_attach_args *ma = aux;
89 	bus_space_handle_t ioh;
90 
91 	sc->sc_dev = self;
92 	if (com_is_console(ma->ma_st, ma->ma_addr, &ioh) == 0 &&
93 	    bus_space_map(ma->ma_st, ma->ma_addr, COM_NPORTS, 0, &ioh) != 0) {
94 		aprint_error(": can't map i/o space\n");
95 		return;
96 	}
97 	com_init_regs(&sc->sc_regs, ma->ma_st, ioh, ma->ma_addr);
98 	sc->sc_frequency = COM_FREQ;
99 
100 	com_attach_subr(sc);
101 
102 	msc->sc_ih = (*algor_intr_establish)(ma->ma_irq, comintr, sc);
103 	if (msc->sc_ih == NULL) {
104 		aprint_error_dev(self, "unable to establish interrupt\n");
105 		return;
106 	}
107 
108 	if (!pmf_device_register1(self, com_suspend, com_resume, com_cleanup)) {
109 		aprint_error_dev(self, "could not establish shutdown hook");
110 	}
111 
112 }
113