1 /* $NetBSD: com_vrip.c,v 1.24 2022/07/08 07:02:47 skrll Exp $ */
2
3 /*-
4 * Copyright (c) 1999 SASAKI Takesi. All rights reserved.
5 * Copyright (c) 1999, 2002 PocketBSD Project. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the PocketBSD project
18 * and its contributors.
19 * 4. Neither the name of the project nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 */
36
37 #include <sys/cdefs.h>
38 __KERNEL_RCSID(0, "$NetBSD: com_vrip.c,v 1.24 2022/07/08 07:02:47 skrll Exp $");
39
40 #include "opt_kgdb.h"
41
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/device.h>
45 #include <sys/reboot.h>
46
47 #include <sys/termios.h>
48
49 #include <machine/intr.h>
50 #include <machine/bus.h>
51
52 #include <machine/platid.h>
53 #include <machine/platid_mask.h>
54 #include <machine/config_hook.h>
55
56 #include <hpcmips/vr/vr.h>
57 #include <hpcmips/vr/vrcpudef.h>
58 #include <hpcmips/vr/vripif.h>
59 #include <hpcmips/vr/vripvar.h>
60 #include <hpcmips/vr/cmureg.h>
61 #include <hpcmips/vr/siureg.h>
62
63 #include <dev/ic/comvar.h>
64 #include <dev/ic/comreg.h>
65
66 #include "opt_vr41xx.h"
67 #include <hpcmips/vr/com_vripvar.h>
68
69 #include "locators.h"
70
71 #define COMVRIPDEBUG
72 #ifdef COMVRIPDEBUG
73 int com_vrip_debug = 0;
74 #define DPRINTF(arg) if (com_vrip_debug) printf arg;
75 #define VPRINTF(arg) if (com_vrip_debug || bootverbose) printf arg;
76 #else
77 #define DPRINTF(arg)
78 #define VPRINTF(arg) if (bootverbose) printf arg;
79 #endif
80
81 struct com_vrip_softc {
82 struct com_softc sc_com;
83 int sc_pwctl;
84 };
85
86 static int com_vrip_probe(device_t, cfdata_t , void *);
87 static void com_vrip_attach(device_t, device_t, void *);
88 static int com_vrip_common_probe(bus_space_tag_t, int);
89
90 void vrcmu_init(void);
91 void vrcmu_supply(int);
92 void vrcmu_mask(int);
93
94 CFATTACH_DECL_NEW(com_vrip, sizeof(struct com_vrip_softc),
95 com_vrip_probe, com_vrip_attach, NULL, NULL);
96
97 int
com_vrip_cndb_attach(bus_space_tag_t iot,int iobase,int rate,int frequency,tcflag_t cflag,int kgdb)98 com_vrip_cndb_attach(bus_space_tag_t iot, int iobase, int rate, int frequency,
99 tcflag_t cflag, int kgdb)
100 {
101
102 if (!com_vrip_common_probe(iot, iobase))
103 return (EIO); /* I can't find appropriate error number. */
104 #ifdef KGDB
105 if (kgdb)
106 return (com_kgdb_attach(iot, iobase, rate, frequency,
107 COM_TYPE_NORMAL, cflag));
108 else
109 #endif
110 return (comcnattach(iot, iobase, rate, frequency,
111 COM_TYPE_NORMAL, cflag));
112 }
113
114 static int
com_vrip_common_probe(bus_space_tag_t iot,int iobase)115 com_vrip_common_probe(bus_space_tag_t iot, int iobase)
116 {
117 bus_space_handle_t ioh;
118 int rv;
119
120 if (bus_space_map(iot, iobase, 1, 0, &ioh)) {
121 aprint_error(": can't map i/o space\n");
122 return 0;
123 }
124 rv = comprobe1(iot, ioh);
125 bus_space_unmap(iot, ioh, 1);
126 return (rv);
127 }
128
129 static int
com_vrip_probe(device_t parent,cfdata_t cf,void * aux)130 com_vrip_probe(device_t parent, cfdata_t cf, void *aux)
131 {
132 struct vrip_attach_args *va = aux;
133 bus_space_tag_t iot = va->va_iot;
134 int rv;
135
136 DPRINTF(("==com_vrip_probe"));
137
138 if (va->va_addr == VRIPIFCF_ADDR_DEFAULT ||
139 va->va_unit == VRIPIFCF_UNIT_DEFAULT) {
140 aprint_error(": need addr and intr.\n");
141 return (0);
142 }
143
144 vrip_power(va->va_vc, va->va_unit, 1);
145
146 if (com_is_console(iot, va->va_addr, 0)) {
147 /*
148 * We have already probed.
149 */
150 rv = 1;
151 } else {
152 rv = com_vrip_common_probe(iot, va->va_addr);
153 }
154
155 DPRINTF((rv ? ": found COM ports\n" : ": can't probe COM device\n"));
156
157 if (rv) {
158 va->va_size = COM_NPORTS;
159 }
160 return (rv);
161 }
162
163
164 static void
com_vrip_attach(device_t parent,device_t self,void * aux)165 com_vrip_attach(device_t parent, device_t self, void *aux)
166 {
167 struct com_vrip_softc *vsc = device_private(self);
168 struct com_softc *sc = &vsc->sc_com;
169 struct vrip_attach_args *va = aux;
170
171 bus_space_tag_t iot = va->va_iot;
172 bus_space_handle_t ioh;
173
174 sc->sc_dev = self;
175 vsc->sc_pwctl = device_cfdata(self)->cf_loc[VRIPIFCF_PWCTL];
176
177 DPRINTF(("==com_vrip_attach"));
178
179 if (bus_space_map(iot, va->va_addr, 1, 0, &ioh)) {
180 aprint_error(": can't map bus space\n");
181 return;
182 }
183
184 com_init_regs(&sc->sc_regs, iot, ioh, va->va_addr);
185
186 sc->enable = NULL; /* XXX: CMU control */
187 sc->disable = NULL;
188
189 sc->sc_frequency = VRCOM_FREQ;
190 /* Power management */
191 vrip_power(va->va_vc, va->va_unit, 1);
192 /* XXX, locale 'ID' must be need */
193 config_hook_call(CONFIG_HOOK_POWERCONTROL, vsc->sc_pwctl, (void*)1);
194
195 DPRINTF(("Try to attach com.\n"));
196 com_attach_subr(sc);
197
198 DPRINTF(("Establish intr"));
199 if (!vrip_intr_establish(va->va_vc, va->va_unit, 0, IPL_TTY,
200 comintr, sc)) {
201 aprint_error_dev(self, "can't map interrupt line.\n");
202 }
203
204 DPRINTF((":return()"));
205 VPRINTF(("%s: pwctl %d\n", device_xname(self), vsc->sc_pwctl));
206 }
207