1 /* $NetBSD: clmpcc_pcctwo.c,v 1.12 2006/08/07 01:31:36 mhitch Exp $ */
2
3 /*-
4 * Copyright (c) 1999, 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Steve C. Woodford.
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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 /*
40 * Cirrus Logic CD2401 4-channel serial chip. PCCchip2 Front-end.
41 */
42
43 #include <sys/cdefs.h>
44 __KERNEL_RCSID(0, "$NetBSD: clmpcc_pcctwo.c,v 1.12 2006/08/07 01:31:36 mhitch Exp $");
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/proc.h>
49 #include <sys/device.h>
50 #include <sys/conf.h>
51 #include <sys/file.h>
52 #include <sys/ioctl.h>
53 #include <sys/tty.h>
54 #include <sys/time.h>
55 #include <sys/kernel.h>
56 #include <sys/syslog.h>
57
58 #include <dev/cons.h>
59
60 #include <machine/cpu.h>
61 #include <machine/bus.h>
62 #include <machine/intr.h>
63
64 #include <dev/ic/clmpccvar.h>
65
66 #include <dev/mvme/pcctwovar.h>
67 #include <dev/mvme/pcctworeg.h>
68
69 /* XXXXSCW: Fixme */
70 #ifdef MVME68K
71 #include <mvme68k/dev/mainbus.h>
72 #else
73 #error Need consiack hook
74 #endif
75
76
77 /* Definition of the driver for autoconfig. */
78 int clmpcc_pcctwo_match(struct device *, struct cfdata *, void *);
79 void clmpcc_pcctwo_attach(struct device *, struct device *, void *);
80 void clmpcc_pcctwo_iackhook(struct clmpcc_softc *, int);
81 void clmpcc_pcctwo_consiackhook(struct clmpcc_softc *, int);
82
83 CFATTACH_DECL(clmpcc_pcctwo, sizeof(struct clmpcc_softc),
84 clmpcc_pcctwo_match, clmpcc_pcctwo_attach, NULL, NULL);
85
86 extern struct cfdriver clmpcc_cd;
87
88 extern const struct cdevsw clmpcc_cdevsw;
89
90 /*
91 * For clmpcccn*()
92 */
93 cons_decl(clmpcc);
94
95
96 /*
97 * Is the CD2401 chip present?
98 */
99 int
100 clmpcc_pcctwo_match(parent, cf, aux)
101 struct device *parent;
102 struct cfdata *cf;
103 void *aux;
104 {
105 struct pcctwo_attach_args *pa;
106
107 pa = aux;
108
109 if (strcmp(pa->pa_name, clmpcc_cd.cd_name))
110 return (0);
111
112 pa->pa_ipl = cf->pcctwocf_ipl;
113
114 return (1);
115 }
116
117 /*
118 * Attach a found CD2401.
119 */
120 void
121 clmpcc_pcctwo_attach(parent, self, aux)
122 struct device *parent;
123 struct device *self;
124 void *aux;
125 {
126 struct clmpcc_softc *sc;
127 struct pcctwo_attach_args *pa = aux;
128 int level = pa->pa_ipl;
129
130 sc = device_private(self);
131 level = pa->pa_ipl;
132 sc->sc_iot = pa->pa_bust;
133 bus_space_map(pa->pa_bust, pa->pa_offset, 0x100, 0, &sc->sc_ioh);
134
135 sc->sc_clk = 20000000;
136 sc->sc_byteswap = CLMPCC_BYTESWAP_LOW;
137 sc->sc_swaprtsdtr = 1;
138 sc->sc_iackhook = clmpcc_pcctwo_iackhook;
139 sc->sc_vector_base = PCCTWO_SCC_VECBASE;
140 sc->sc_rpilr = 0x03;
141 sc->sc_tpilr = 0x02;
142 sc->sc_mpilr = 0x01;
143 sc->sc_evcnt = pcctwointr_evcnt(level);
144
145 /* Do common parts of CD2401 configuration. */
146 clmpcc_attach(sc);
147
148 /* Hook the interrupts */
149 pcctwointr_establish(PCCTWOV_SCC_RX, clmpcc_rxintr, level, sc, NULL);
150 pcctwointr_establish(PCCTWOV_SCC_RX_EXCEP, clmpcc_rxintr, level, sc,
151 NULL);
152 pcctwointr_establish(PCCTWOV_SCC_TX, clmpcc_txintr, level, sc, NULL);
153 pcctwointr_establish(PCCTWOV_SCC_MODEM, clmpcc_mdintr, level, sc, NULL);
154 }
155
156 void
157 clmpcc_pcctwo_iackhook(sc, which)
158 struct clmpcc_softc *sc;
159 int which;
160 {
161 bus_size_t offset;
162 volatile u_char foo;
163
164 switch (which) {
165 case CLMPCC_IACK_MODEM:
166 offset = PCC2REG_SCC_MODEM_PIACK;
167 break;
168
169 case CLMPCC_IACK_RX:
170 offset = PCC2REG_SCC_RX_PIACK;
171 break;
172
173 case CLMPCC_IACK_TX:
174 offset = PCC2REG_SCC_TX_PIACK;
175 break;
176 default:
177 #ifdef DEBUG
178 printf("%s: Invalid IACK number '%d'\n",
179 sc->sc_dev.dv_xname, which);
180 #endif
181 panic("clmpcc_pcctwo_iackhook %d", which);
182 }
183
184 foo = pcc2_reg_read(sys_pcctwo, offset);
185 }
186
187 /*
188 * This routine is only used prior to clmpcc_attach() being called
189 */
190 void
191 clmpcc_pcctwo_consiackhook(sc, which)
192 struct clmpcc_softc *sc;
193 int which;
194 {
195 bus_space_handle_t bush;
196 bus_size_t offset;
197 volatile u_char foo;
198
199 switch (which) {
200 case CLMPCC_IACK_MODEM:
201 offset = PCC2REG_SCC_MODEM_PIACK;
202 break;
203
204 case CLMPCC_IACK_RX:
205 offset = PCC2REG_SCC_RX_PIACK;
206 break;
207
208 case CLMPCC_IACK_TX:
209 offset = PCC2REG_SCC_TX_PIACK;
210 break;
211 default:
212 #ifdef DEBUG
213 printf("%s: Invalid IACK number '%d'\n",
214 sc->sc_dev.dv_xname, which);
215 panic("clmpcc_pcctwo_consiackhook");
216 #endif
217 panic("clmpcc_pcctwo_iackhook %d", which);
218 }
219
220 #ifdef MVME68K
221 /*
222 * We need to fake the tag and handle since 'sys_pcctwo' will
223 * be NULL during early system startup...
224 */
225 bush = (bus_space_handle_t) & (intiobase[MAINBUS_PCCTWO_OFFSET +
226 PCCTWO_REG_OFF]);
227
228 foo = bus_space_read_1(&_mainbus_space_tag, bush, offset);
229 #else
230 #error Need consiack hook
231 #endif
232 }
233
234
235 /****************************************************************
236 * Console support functions (MVME PCCchip2 specific!)
237 ****************************************************************/
238
239 /*
240 * Check for CD2401 console.
241 */
242 void
243 clmpcccnprobe(cp)
244 struct consdev *cp;
245 {
246 int maj;
247
248 #if defined(MVME68K)
249 if (machineid != MVME_167 && machineid != MVME_177)
250 #elif defined(MVME88K)
251 if (machineid != MVME_187)
252 #endif
253 {
254 cp->cn_pri = CN_DEAD;
255 return;
256 }
257
258 /*
259 * Locate the major number
260 */
261 maj = cdevsw_lookup_major(&clmpcc_cdevsw);
262
263 /* Initialize required fields. */
264 cp->cn_dev = makedev(maj, 0);
265 cp->cn_pri = CN_NORMAL;
266 }
267
268 void
269 clmpcccninit(cp)
270 struct consdev *cp;
271 {
272 static struct clmpcc_softc cons_sc;
273
274 cons_sc.sc_iot = &_mainbus_space_tag;
275 bus_space_map(&_mainbus_space_tag,
276 intiobase_phys + MAINBUS_PCCTWO_OFFSET + PCCTWO_SCC_OFF,
277 PCC2REG_SIZE, 0, &cons_sc.sc_ioh);
278 cons_sc.sc_clk = 20000000;
279 cons_sc.sc_byteswap = CLMPCC_BYTESWAP_LOW;
280 cons_sc.sc_swaprtsdtr = 1;
281 cons_sc.sc_iackhook = clmpcc_pcctwo_consiackhook;
282 cons_sc.sc_vector_base = PCCTWO_SCC_VECBASE;
283 cons_sc.sc_rpilr = 0x03;
284 cons_sc.sc_tpilr = 0x02;
285 cons_sc.sc_mpilr = 0x01;
286
287 clmpcc_cnattach(&cons_sc, 0, 9600);
288 }
Cache object: 9cfa04704a8f67299d553233646baa24
|