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
61 struct 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
68 static int com_sableio_match(device_t, cfdata_t , void *);
69 static void com_sableio_attach(device_t, device_t, void *);
70
71 CFATTACH_DECL_NEW(com_sableio, sizeof(struct com_sableio_softc),
72 com_sableio_match, com_sableio_attach, NULL, NULL);
73
74 static int
com_sableio_match(device_t parent,cfdata_t match,void * aux)75 com_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
86 static void
com_sableio_attach(device_t parent,device_t self,void * aux)87 com_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