1 /* $NetBSD: com_arbus.c,v 1.13 2018/12/08 17:46:12 thorpej Exp $ */
2 /*-
3 * Copyright (c) 2006 Urbana-Champaign Independent Media Center.
4 * Copyright (c) 2006 Garrett D'Amore.
5 * All rights reserved.
6 *
7 * Portions of this code were written by Garrett D'Amore for the
8 * Champaign-Urbana Community Wireless Network Project.
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions 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
16 * copyright notice, this list of conditions and the following
17 * disclaimer in the documentation and/or other materials provided
18 * with the distribution.
19 * 3. All advertising materials mentioning features or use of this
20 * software must display the following acknowledgements:
21 * This product includes software developed by the Urbana-Champaign
22 * Independent Media Center.
23 * This product includes software developed by Garrett D'Amore.
24 * 4. Urbana-Champaign Independent Media Center's name and Garrett
25 * D'Amore's name may not be used to endorse or promote products
26 * derived from this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE URBANA-CHAMPAIGN INDEPENDENT
29 * MEDIA CENTER AND GARRETT D'AMORE ``AS IS'' AND ANY EXPRESS OR
30 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
31 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE URBANA-CHAMPAIGN INDEPENDENT
33 * MEDIA CENTER OR GARRETT D'AMORE BE LIABLE FOR ANY DIRECT, INDIRECT,
34 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
35 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
36 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
37 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
38 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
40 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
41 */
42
43 /*-
44 * Copyright (c) 1998 The NetBSD Foundation, Inc.
45 * All rights reserved.
46 *
47 * This code is derived from software contributed to The NetBSD Foundation
48 * by Charles M. Hannum.
49 *
50 * Redistribution and use in source and binary forms, with or without
51 * modification, are permitted provided that the following conditions
52 * are met:
53 * 1. Redistributions of source code must retain the above copyright
54 * notice, this list of conditions and the following disclaimer.
55 * 2. Redistributions in binary form must reproduce the above copyright
56 * notice, this list of conditions and the following disclaimer in the
57 * documentation and/or other materials provided with the distribution.
58 *
59 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
60 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
61 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
62 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
63 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
64 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
65 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
66 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
67 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
68 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
69 * POSSIBILITY OF SUCH DAMAGE.
70 */
71
72 /*-
73 * Copyright (c) 1991 The Regents of the University of California.
74 * All rights reserved.
75 *
76 * Redistribution and use in source and binary forms, with or without
77 * modification, are permitted provided that the following conditions
78 * are met:
79 * 1. Redistributions of source code must retain the above copyright
80 * notice, this list of conditions and the following disclaimer.
81 * 2. Redistributions in binary form must reproduce the above copyright
82 * notice, this list of conditions and the following disclaimer in the
83 * documentation and/or other materials provided with the distribution.
84 * 3. Neither the name of the University nor the names of its contributors
85 * may be used to endorse or promote products derived from this software
86 * without specific prior written permission.
87 *
88 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
89 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
90 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
91 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
92 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
93 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
94 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
95 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
96 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
97 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
98 * SUCH DAMAGE.
99 *
100 * @(#)com.c 7.5 (Berkeley) 5/16/91
101 */
102
103 #include <sys/cdefs.h>
104 __KERNEL_RCSID(0, "$NetBSD: com_arbus.c,v 1.13 2018/12/08 17:46:12 thorpej Exp $");
105
106 #include <sys/param.h>
107 #include <sys/systm.h>
108 #include <sys/device.h>
109 #include <sys/kernel.h>
110 #include <sys/termios.h>
111 #include <sys/ttydefaults.h>
112 #include <sys/types.h>
113
114 #include <sys/bus.h>
115
116 #include <dev/cons.h>
117 #include <dev/ic/comreg.h>
118 #include <dev/ic/comvar.h>
119
120 #include <mips/cpuregs.h>
121 #include <mips/atheros/include/arbusvar.h>
122
123 #include "opt_com.h"
124
125 struct com_arbus_softc {
126 struct com_softc sc_com;
127 };
128
129 static void com_arbus_init_regs(struct com_regs *, bus_space_tag_t,
130 bus_space_handle_t, bus_addr_t, bus_size_t);
131 //static bus_space_tag_t com_arbus_get_bus_space_tag(void);
132 static int com_arbus_match(device_t, cfdata_t , void *);
133 static void com_arbus_attach(device_t, device_t, void *);
134
135 CFATTACH_DECL_NEW(com_arbus, sizeof(struct com_arbus_softc),
136 com_arbus_match, com_arbus_attach, NULL, NULL);
137
138 #if 0
139 #ifdef TTYDEF_SPEED
140 #define COM_ARBUS_BAUD TTYDEF_SPEED
141 #else
142 #define COM_ARBUS_BAUD 115200
143 #endif
144 #endif
145
146 #ifndef COM_ARBUS_BAUD
147 #define COM_ARBUS_BAUD 115200
148 #endif
149
150 int com_arbus_baud = COM_ARBUS_BAUD;
151
152 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
153
154 #ifndef COM_REGMAP
155 #error COM_REGMAP not defined!
156 #endif
157
158 int
com_arbus_match(device_t parent,cfdata_t cf,void * aux)159 com_arbus_match(device_t parent, cfdata_t cf, void *aux)
160 {
161 struct arbus_attach_args *aa = aux;
162 bus_space_handle_t bsh;
163 struct com_regs regs;
164 int rv;
165
166 if (strcmp(aa->aa_name, cf->cf_name) != 0)
167 return 0;
168
169 if (com_is_console(aa->aa_bst, aa->aa_addr, ®s.cr_ioh))
170 return 1;
171
172 if (bus_space_map(aa->aa_bst, aa->aa_addr, aa->aa_size,
173 0, &bsh))
174 return 0;
175
176 com_arbus_init_regs(®s, aa->aa_bst, bsh, aa->aa_addr, aa->aa_size);
177
178 rv = com_probe_subr(®s);
179
180 bus_space_unmap(aa->aa_bst, bsh, aa->aa_size);
181
182 return rv;
183 }
184
185 void
com_arbus_attach(device_t parent,device_t self,void * aux)186 com_arbus_attach(device_t parent, device_t self, void *aux)
187 {
188 struct com_arbus_softc *arsc = device_private(self);
189 struct com_softc *sc = &arsc->sc_com;
190 struct arbus_attach_args *aa = aux;
191 prop_number_t prop;
192 bus_space_handle_t ioh;
193
194 sc->sc_dev = self;
195
196 prop = prop_dictionary_get(device_properties(sc->sc_dev),
197 "frequency");
198 if (prop == NULL) {
199 aprint_error(": unable to get frequency property\n");
200 return;
201 }
202 KASSERT(prop_object_type(prop) == PROP_TYPE_NUMBER);
203
204 sc->sc_frequency = (int)prop_number_integer_value(prop);
205
206 if (!com_is_console(aa->aa_bst, aa->aa_addr, &ioh)
207 && bus_space_map(aa->aa_bst, aa->aa_addr, aa->aa_size, 0,
208 &ioh) != 0) {
209 aprint_error(": can't map registers\n");
210 return;
211 }
212
213 com_arbus_init_regs(&sc->sc_regs, aa->aa_bst, ioh, aa->aa_addr,
214 aa->aa_size);
215
216 com_attach_subr(sc);
217
218 arbus_intr_establish(aa->aa_cirq, aa->aa_mirq, comintr, sc);
219 }
220
221 static void
com_arbus_init_regs(struct com_regs * regsp,bus_space_tag_t st,bus_space_handle_t sh,bus_addr_t addr,bus_size_t size)222 com_arbus_init_regs(struct com_regs *regsp, bus_space_tag_t st,
223 bus_space_handle_t sh, bus_addr_t addr, bus_size_t size)
224 {
225 #if _BYTE_ORDER == _BIG_ENDIAN
226 int off = 3;
227 #else
228 int off = 0;
229 #endif
230
231 com_init_regs(regsp, st, sh, addr);
232
233 /* rewrite the map to shift for alignment */
234 for (size_t i = 0; i < __arraycount(regsp->cr_map); i++) {
235 regsp->cr_map[i] = (regsp->cr_map[i] * 4) + off;
236 }
237 regsp->cr_nports = size;
238 }
239
240 void
com_arbus_cnattach(bus_addr_t addr,uint32_t freq)241 com_arbus_cnattach(bus_addr_t addr, uint32_t freq)
242 {
243 bus_space_tag_t bst;
244 bus_space_handle_t bsh;
245 struct com_regs regs;
246
247 bst = arbus_get_bus_space_tag();
248
249 if (bus_space_map(bst, addr, 0x1000, 0, &bsh))
250 return;
251
252 com_arbus_init_regs(®s, bst, bsh, addr, 0x1000);
253
254 comcnattach1(®s, com_arbus_baud, freq, COM_TYPE_NORMAL, CONMODE);
255 }
256
257