scif.c revision 1.23 1 1.23 atatat /* $NetBSD: scif.c,v 1.23 2002/03/17 19:40:50 atatat Exp $ */
2 1.1 itojun
3 1.1 itojun /*-
4 1.1 itojun * Copyright (C) 1999 T.Horiuchi and SAITOH Masanobu. All rights reserved.
5 1.1 itojun *
6 1.1 itojun * Redistribution and use in source and binary forms, with or without
7 1.1 itojun * modification, are permitted provided that the following conditions
8 1.1 itojun * are met:
9 1.1 itojun * 1. Redistributions of source code must retain the above copyright
10 1.1 itojun * notice, this list of conditions and the following disclaimer.
11 1.1 itojun * 2. Redistributions in binary form must reproduce the above copyright
12 1.1 itojun * notice, this list of conditions and the following disclaimer in the
13 1.1 itojun * documentation and/or other materials provided with the distribution.
14 1.1 itojun * 3. The name of the author may not be used to endorse or promote products
15 1.1 itojun * derived from this software without specific prior written permission.
16 1.1 itojun *
17 1.1 itojun * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 1.1 itojun * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 1.1 itojun * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 1.1 itojun * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 1.1 itojun * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 1.1 itojun * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 1.1 itojun * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 1.1 itojun * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 1.1 itojun * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 1.1 itojun * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 1.1 itojun */
28 1.1 itojun
29 1.2 msaitoh /*-
30 1.2 msaitoh * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
31 1.2 msaitoh * All rights reserved.
32 1.2 msaitoh *
33 1.2 msaitoh * This code is derived from software contributed to The NetBSD Foundation
34 1.2 msaitoh * by Charles M. Hannum.
35 1.2 msaitoh *
36 1.2 msaitoh * Redistribution and use in source and binary forms, with or without
37 1.2 msaitoh * modification, are permitted provided that the following conditions
38 1.2 msaitoh * are met:
39 1.2 msaitoh * 1. Redistributions of source code must retain the above copyright
40 1.2 msaitoh * notice, this list of conditions and the following disclaimer.
41 1.2 msaitoh * 2. Redistributions in binary form must reproduce the above copyright
42 1.2 msaitoh * notice, this list of conditions and the following disclaimer in the
43 1.2 msaitoh * documentation and/or other materials provided with the distribution.
44 1.2 msaitoh * 3. All advertising materials mentioning features or use of this software
45 1.2 msaitoh * must display the following acknowledgement:
46 1.2 msaitoh * This product includes software developed by the NetBSD
47 1.2 msaitoh * Foundation, Inc. and its contributors.
48 1.2 msaitoh * 4. Neither the name of The NetBSD Foundation nor the names of its
49 1.2 msaitoh * contributors may be used to endorse or promote products derived
50 1.2 msaitoh * from this software without specific prior written permission.
51 1.2 msaitoh *
52 1.2 msaitoh * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
53 1.2 msaitoh * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
54 1.2 msaitoh * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
55 1.2 msaitoh * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
56 1.2 msaitoh * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
57 1.2 msaitoh * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
58 1.2 msaitoh * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
59 1.2 msaitoh * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
60 1.2 msaitoh * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
61 1.2 msaitoh * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
62 1.2 msaitoh * POSSIBILITY OF SUCH DAMAGE.
63 1.2 msaitoh */
64 1.2 msaitoh
65 1.2 msaitoh /*
66 1.2 msaitoh * Copyright (c) 1991 The Regents of the University of California.
67 1.2 msaitoh * All rights reserved.
68 1.2 msaitoh *
69 1.2 msaitoh * Redistribution and use in source and binary forms, with or without
70 1.2 msaitoh * modification, are permitted provided that the following conditions
71 1.2 msaitoh * are met:
72 1.2 msaitoh * 1. Redistributions of source code must retain the above copyright
73 1.2 msaitoh * notice, this list of conditions and the following disclaimer.
74 1.2 msaitoh * 2. Redistributions in binary form must reproduce the above copyright
75 1.2 msaitoh * notice, this list of conditions and the following disclaimer in the
76 1.2 msaitoh * documentation and/or other materials provided with the distribution.
77 1.2 msaitoh * 3. All advertising materials mentioning features or use of this software
78 1.2 msaitoh * must display the following acknowledgement:
79 1.2 msaitoh * This product includes software developed by the University of
80 1.2 msaitoh * California, Berkeley and its contributors.
81 1.2 msaitoh * 4. Neither the name of the University nor the names of its contributors
82 1.2 msaitoh * may be used to endorse or promote products derived from this software
83 1.2 msaitoh * without specific prior written permission.
84 1.2 msaitoh *
85 1.2 msaitoh * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
86 1.2 msaitoh * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
87 1.2 msaitoh * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
88 1.2 msaitoh * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
89 1.2 msaitoh * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
90 1.2 msaitoh * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
91 1.2 msaitoh * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
92 1.2 msaitoh * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
93 1.2 msaitoh * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
94 1.2 msaitoh * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
95 1.2 msaitoh * SUCH DAMAGE.
96 1.2 msaitoh *
97 1.2 msaitoh * @(#)com.c 7.5 (Berkeley) 5/16/91
98 1.2 msaitoh */
99 1.2 msaitoh
100 1.2 msaitoh /*
101 1.2 msaitoh * SH internal serial driver
102 1.2 msaitoh *
103 1.2 msaitoh * This code is derived from both z8530tty.c and com.c
104 1.2 msaitoh */
105 1.2 msaitoh
106 1.17 lukem #include "opt_kgdb.h"
107 1.1 itojun #include "opt_scif.h"
108 1.1 itojun
109 1.1 itojun #include <sys/param.h>
110 1.1 itojun #include <sys/systm.h>
111 1.1 itojun #include <sys/tty.h>
112 1.1 itojun #include <sys/proc.h>
113 1.1 itojun #include <sys/conf.h>
114 1.1 itojun #include <sys/file.h>
115 1.1 itojun #include <sys/syslog.h>
116 1.1 itojun #include <sys/kernel.h>
117 1.1 itojun #include <sys/device.h>
118 1.1 itojun #include <sys/malloc.h>
119 1.22 uch #include <sys/kgdb.h>
120 1.1 itojun
121 1.1 itojun #include <dev/cons.h>
122 1.1 itojun
123 1.21 uch #include <sh3/clock.h>
124 1.1 itojun #include <sh3/scifreg.h>
125 1.22 uch #include <sh3/dev/scifvar.h>
126 1.1 itojun
127 1.1 itojun #include <machine/shbvar.h>
128 1.1 itojun
129 1.20 uch static void scifstart(struct tty *);
130 1.20 uch static int scifparam(struct tty *, struct termios *);
131 1.22 uch static int kgdb_attached;
132 1.1 itojun
133 1.20 uch void scifcnprobe(struct consdev *);
134 1.20 uch void scifcninit(struct consdev *);
135 1.20 uch void scifcnputc(dev_t, int);
136 1.20 uch int scifcngetc(dev_t);
137 1.20 uch void scifcnpoolc(dev_t, int);
138 1.20 uch void scif_intr_init(void);
139 1.20 uch int scifintr(void *);
140 1.1 itojun
141 1.1 itojun struct scif_softc {
142 1.1 itojun struct device sc_dev; /* boilerplate */
143 1.1 itojun struct tty *sc_tty;
144 1.1 itojun void *sc_ih;
145 1.1 itojun
146 1.8 thorpej struct callout sc_diag_ch;
147 1.8 thorpej
148 1.1 itojun #if 0
149 1.1 itojun bus_space_tag_t sc_iot; /* ISA i/o space identifier */
150 1.1 itojun bus_space_handle_t sc_ioh; /* ISA io handle */
151 1.1 itojun
152 1.1 itojun int sc_drq;
153 1.1 itojun
154 1.1 itojun int sc_frequency;
155 1.1 itojun #endif
156 1.1 itojun
157 1.1 itojun u_int sc_overflows,
158 1.1 itojun sc_floods,
159 1.1 itojun sc_errors; /* number of retries so far */
160 1.1 itojun u_char sc_status[7]; /* copy of registers */
161 1.1 itojun
162 1.1 itojun int sc_hwflags;
163 1.1 itojun int sc_swflags;
164 1.1 itojun u_int sc_fifolen;
165 1.1 itojun
166 1.1 itojun u_int sc_r_hiwat,
167 1.1 itojun sc_r_lowat;
168 1.1 itojun u_char *volatile sc_rbget,
169 1.1 itojun *volatile sc_rbput;
170 1.1 itojun volatile u_int sc_rbavail;
171 1.1 itojun u_char *sc_rbuf,
172 1.1 itojun *sc_ebuf;
173 1.1 itojun
174 1.1 itojun u_char *sc_tba; /* transmit buffer address */
175 1.1 itojun u_int sc_tbc, /* transmit byte count */
176 1.1 itojun sc_heldtbc;
177 1.1 itojun
178 1.1 itojun volatile u_char sc_rx_flags,
179 1.1 itojun #define RX_TTY_BLOCKED 0x01
180 1.1 itojun #define RX_TTY_OVERFLOWED 0x02
181 1.1 itojun #define RX_IBUF_BLOCKED 0x04
182 1.1 itojun #define RX_IBUF_OVERFLOWED 0x08
183 1.1 itojun #define RX_ANY_BLOCK 0x0f
184 1.3 msaitoh sc_tx_busy, /* working on an output chunk */
185 1.3 msaitoh sc_tx_done, /* done with one output chunk */
186 1.2 msaitoh sc_tx_stopped, /* H/W level stop (lost CTS) */
187 1.2 msaitoh sc_st_check, /* got a status interrupt */
188 1.1 itojun sc_rx_ready;
189 1.1 itojun
190 1.1 itojun volatile u_char sc_heldchange;
191 1.1 itojun };
192 1.1 itojun
193 1.1 itojun /* controller driver configuration */
194 1.20 uch static int scif_match(struct device *, struct cfdata *, void *);
195 1.20 uch static void scif_attach(struct device *, struct device *, void *);
196 1.1 itojun
197 1.20 uch void scif_break(struct scif_softc *, int);
198 1.20 uch void scif_iflush(struct scif_softc *);
199 1.1 itojun
200 1.1 itojun #define integrate static inline
201 1.15 thorpej #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS
202 1.20 uch void scifsoft(void *);
203 1.1 itojun #else
204 1.1 itojun #ifndef __NO_SOFT_SERIAL_INTERRUPT
205 1.20 uch void scifsoft(void);
206 1.1 itojun #else
207 1.20 uch void scifsoft(void *);
208 1.1 itojun #endif
209 1.1 itojun #endif
210 1.20 uch integrate void scif_rxsoft(struct scif_softc *, struct tty *);
211 1.20 uch integrate void scif_txsoft(struct scif_softc *, struct tty *);
212 1.20 uch integrate void scif_stsoft(struct scif_softc *, struct tty *);
213 1.20 uch integrate void scif_schedrx(struct scif_softc *);
214 1.20 uch void scifdiag(void *);
215 1.1 itojun
216 1.1 itojun
217 1.1 itojun #define SCIFUNIT_MASK 0x7ffff
218 1.1 itojun #define SCIFDIALOUT_MASK 0x80000
219 1.1 itojun
220 1.1 itojun #define SCIFUNIT(x) (minor(x) & SCIFUNIT_MASK)
221 1.1 itojun #define SCIFDIALOUT(x) (minor(x) & SCIFDIALOUT_MASK)
222 1.1 itojun
223 1.1 itojun /* Macros to clear/set/test flags. */
224 1.1 itojun #define SET(t, f) (t) |= (f)
225 1.1 itojun #define CLR(t, f) (t) &= ~(f)
226 1.1 itojun #define ISSET(t, f) ((t) & (f))
227 1.1 itojun
228 1.1 itojun /* Hardware flag masks */
229 1.1 itojun #define SCIF_HW_NOIEN 0x01
230 1.1 itojun #define SCIF_HW_FIFO 0x02
231 1.1 itojun #define SCIF_HW_FLOW 0x08
232 1.1 itojun #define SCIF_HW_DEV_OK 0x20
233 1.1 itojun #define SCIF_HW_CONSOLE 0x40
234 1.1 itojun #define SCIF_HW_KGDB 0x80
235 1.1 itojun
236 1.1 itojun /* Buffer size for character buffer */
237 1.1 itojun #define SCIF_RING_SIZE 2048
238 1.1 itojun
239 1.1 itojun /* Stop input when 3/4 of the ring is full; restart when only 1/4 is full. */
240 1.1 itojun u_int scif_rbuf_hiwat = (SCIF_RING_SIZE * 1) / 4;
241 1.1 itojun u_int scif_rbuf_lowat = (SCIF_RING_SIZE * 3) / 4;
242 1.1 itojun
243 1.1 itojun #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
244 1.1 itojun int scifconscflag = CONMODE;
245 1.9 msaitoh int scifisconsole = 0;
246 1.1 itojun
247 1.7 msaitoh #ifdef SCIFCN_SPEED
248 1.7 msaitoh unsigned int scifcn_speed = SCIFCN_SPEED;
249 1.7 msaitoh #else
250 1.7 msaitoh unsigned int scifcn_speed = 9600;
251 1.7 msaitoh #endif
252 1.7 msaitoh
253 1.1 itojun #define divrnd(n, q) (((n)*2/(q)+1)/2) /* divide and round off */
254 1.1 itojun
255 1.15 thorpej #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS
256 1.1 itojun #ifdef __NO_SOFT_SERIAL_INTERRUPT
257 1.1 itojun volatile int scif_softintr_scheduled;
258 1.8 thorpej struct callout scif_soft_ch = CALLOUT_INITIALIZER;
259 1.1 itojun #endif
260 1.1 itojun #endif
261 1.1 itojun
262 1.1 itojun u_int scif_rbuf_size = SCIF_RING_SIZE;
263 1.1 itojun
264 1.1 itojun struct cfattach scif_ca = {
265 1.1 itojun sizeof(struct scif_softc), scif_match, scif_attach
266 1.1 itojun };
267 1.1 itojun
268 1.1 itojun extern struct cfdriver scif_cd;
269 1.1 itojun
270 1.1 itojun cdev_decl(scif);
271 1.1 itojun
272 1.20 uch void InitializeScif (unsigned int);
273 1.1 itojun
274 1.1 itojun /*
275 1.1 itojun * following functions are debugging prupose only
276 1.1 itojun */
277 1.1 itojun #define CR 0x0D
278 1.1 itojun #define USART_ON (unsigned int)~0x08
279 1.1 itojun
280 1.20 uch void scif_putc(unsigned char);
281 1.20 uch unsigned char scif_getc(void);
282 1.20 uch int ScifErrCheck(void);
283 1.1 itojun
284 1.1 itojun /*
285 1.1 itojun * InitializeScif
286 1.1 itojun * : unsigned int bps;
287 1.1 itojun * : SCIF(Serial Communication Interface)
288 1.1 itojun */
289 1.1 itojun
290 1.1 itojun void
291 1.20 uch InitializeScif(unsigned int bps)
292 1.1 itojun {
293 1.1 itojun
294 1.1 itojun /* Initialize SCR */
295 1.3 msaitoh SHREG_SCSCR2 = 0x00;
296 1.1 itojun
297 1.6 msaitoh #if 0
298 1.6 msaitoh SHREG_SCFCR2 = SCFCR2_TFRST | SCFCR2_RFRST | SCFCR2_MCE;
299 1.6 msaitoh #else
300 1.1 itojun SHREG_SCFCR2 = SCFCR2_TFRST | SCFCR2_RFRST;
301 1.6 msaitoh #endif
302 1.7 msaitoh /* Serial Mode Register */
303 1.3 msaitoh SHREG_SCSMR2 = 0x00; /* 8bit,NonParity,Even,1Stop */
304 1.1 itojun
305 1.7 msaitoh /* Bit Rate Register */
306 1.21 uch SHREG_SCBRR2 = divrnd(sh_clock_get_pclock(), 32 * bps) - 1;
307 1.1 itojun
308 1.7 msaitoh /*
309 1.7 msaitoh * wait 1mSec, because Send/Recv must begin 1 bit period after
310 1.7 msaitoh * BRR is set.
311 1.7 msaitoh */
312 1.21 uch delay(1000);
313 1.1 itojun
314 1.6 msaitoh #if 0
315 1.6 msaitoh SHREG_SCFCR2 = FIFO_RCV_TRIGGER_14 | FIFO_XMT_TRIGGER_1 | SCFCR2_MCE;
316 1.6 msaitoh #else
317 1.1 itojun SHREG_SCFCR2 = FIFO_RCV_TRIGGER_14 | FIFO_XMT_TRIGGER_1;
318 1.6 msaitoh #endif
319 1.1 itojun
320 1.18 wiz /* Send permission, Receive permission ON */
321 1.3 msaitoh SHREG_SCSCR2 = SCSCR2_TE | SCSCR2_RE;
322 1.1 itojun
323 1.7 msaitoh /* Serial Status Register */
324 1.3 msaitoh SHREG_SCSSR2 &= SCSSR2_TDFE; /* Clear Status */
325 1.1 itojun }
326 1.1 itojun
327 1.1 itojun
328 1.1 itojun /*
329 1.14 msaitoh * scif_putc
330 1.1 itojun * : unsigned char c;
331 1.1 itojun */
332 1.1 itojun
333 1.1 itojun void
334 1.20 uch scif_putc(unsigned char c)
335 1.1 itojun {
336 1.1 itojun
337 1.14 msaitoh if (c == '\n')
338 1.14 msaitoh scif_putc('\r');
339 1.14 msaitoh
340 1.1 itojun /* wait for ready */
341 1.1 itojun while ((SHREG_SCFDR2 & SCFDR2_TXCNT) == SCFDR2_TXF_FULL)
342 1.1 itojun ;
343 1.1 itojun
344 1.1 itojun /* write send data to send register */
345 1.1 itojun SHREG_SCFTDR2 = c;
346 1.1 itojun
347 1.1 itojun /* clear ready flag */
348 1.1 itojun SHREG_SCSSR2 &= ~(SCSSR2_TDFE | SCSSR2_TEND);
349 1.1 itojun }
350 1.1 itojun
351 1.1 itojun /*
352 1.1 itojun * : ScifErrCheck
353 1.1 itojun * 0x80 = error
354 1.1 itojun * 0x08 = frame error
355 1.1 itojun * 0x04 = parity error
356 1.1 itojun */
357 1.1 itojun int
358 1.1 itojun ScifErrCheck(void)
359 1.1 itojun {
360 1.1 itojun
361 1.1 itojun return(SHREG_SCSSR2 & (SCSSR2_ER | SCSSR2_FER | SCSSR2_PER));
362 1.1 itojun }
363 1.1 itojun
364 1.1 itojun /*
365 1.14 msaitoh * scif_getc
366 1.1 itojun */
367 1.1 itojun #if 0
368 1.1 itojun /* Old code */
369 1.1 itojun unsigned char
370 1.14 msaitoh scif_getc(void)
371 1.1 itojun {
372 1.1 itojun unsigned char c, err_c;
373 1.1 itojun
374 1.1 itojun while (((err_c = SHREG_SCSSR2)
375 1.1 itojun & (SCSSR2_RDF | SCSSR2_ER | SCSSR2_FER | SCSSR2_PER | SCSSR2_DR)) == 0)
376 1.1 itojun ;
377 1.10 msaitoh if ((err_c & (SCSSR2_ER | SCSSR2_FER | SCSSR2_PER)) != 0) {
378 1.10 msaitoh SHREG_SCSSR2 &= ~SCSSR2_ER;
379 1.1 itojun return(err_c |= 0x80);
380 1.10 msaitoh }
381 1.1 itojun
382 1.1 itojun c = SHREG_SCFRDR2;
383 1.1 itojun
384 1.10 msaitoh SHREG_SCSSR2 &= ~(SCSSR2_ER | SCSSR2_RDF | SCSSR2_DR);
385 1.1 itojun
386 1.1 itojun return(c);
387 1.1 itojun }
388 1.1 itojun #else
389 1.1 itojun unsigned char
390 1.14 msaitoh scif_getc(void)
391 1.1 itojun {
392 1.1 itojun unsigned char c, err_c;
393 1.1 itojun
394 1.12 msaitoh while (1) {
395 1.12 msaitoh /* wait for ready */
396 1.12 msaitoh while ((SHREG_SCFDR2 & SCFDR2_RECVCNT) == 0)
397 1.12 msaitoh ;
398 1.1 itojun
399 1.12 msaitoh c = SHREG_SCFRDR2;
400 1.12 msaitoh err_c = SHREG_SCSSR2;
401 1.12 msaitoh SHREG_SCSSR2 &= ~(SCSSR2_ER | SCSSR2_BRK | SCSSR2_RDF
402 1.12 msaitoh | SCSSR2_DR);
403 1.12 msaitoh if ((err_c & (SCSSR2_ER | SCSSR2_BRK | SCSSR2_FER
404 1.12 msaitoh | SCSSR2_PER)) == 0) {
405 1.12 msaitoh return(c);
406 1.12 msaitoh }
407 1.12 msaitoh }
408 1.1 itojun
409 1.1 itojun }
410 1.1 itojun #endif
411 1.1 itojun
412 1.1 itojun #if 0
413 1.1 itojun #define SCIF_MAX_UNITS 2
414 1.1 itojun #else
415 1.1 itojun #define SCIF_MAX_UNITS 1
416 1.1 itojun #endif
417 1.1 itojun
418 1.1 itojun
419 1.1 itojun static int
420 1.20 uch scif_match(struct device *parent, struct cfdata *cfp, void *aux)
421 1.1 itojun {
422 1.1 itojun struct shb_attach_args *sa = aux;
423 1.1 itojun
424 1.1 itojun if (strcmp(cfp->cf_driver->cd_name, "scif")
425 1.1 itojun || cfp->cf_unit >= SCIF_MAX_UNITS)
426 1.1 itojun return 0;
427 1.1 itojun
428 1.1 itojun sa->ia_iosize = 0x10;
429 1.1 itojun return 1;
430 1.1 itojun }
431 1.1 itojun
432 1.1 itojun static void
433 1.20 uch scif_attach(struct device *parent, struct device *self, void *aux)
434 1.1 itojun {
435 1.1 itojun struct scif_softc *sc = (struct scif_softc *)self;
436 1.1 itojun struct tty *tp;
437 1.1 itojun int irq;
438 1.1 itojun struct shb_attach_args *ia = aux;
439 1.1 itojun
440 1.1 itojun sc->sc_hwflags = 0; /* XXX */
441 1.1 itojun sc->sc_swflags = 0; /* XXX */
442 1.1 itojun sc->sc_fifolen = 16;
443 1.1 itojun
444 1.1 itojun irq = ia->ia_irq;
445 1.1 itojun
446 1.22 uch if (scifisconsole || kgdb_attached) {
447 1.9 msaitoh /* InitializeScif(scifcn_speed); */
448 1.9 msaitoh SET(sc->sc_hwflags, SCIF_HW_CONSOLE);
449 1.9 msaitoh SET(sc->sc_swflags, TIOCFLAG_SOFTCAR);
450 1.22 uch if (kgdb_attached) {
451 1.22 uch SET(sc->sc_hwflags, SCIF_HW_KGDB);
452 1.22 uch printf("\n%s: kgdb\n", sc->sc_dev.dv_xname);
453 1.22 uch } else {
454 1.22 uch printf("\n%s: console\n", sc->sc_dev.dv_xname);
455 1.22 uch }
456 1.9 msaitoh } else {
457 1.9 msaitoh InitializeScif(9600);
458 1.9 msaitoh printf("\n");
459 1.9 msaitoh }
460 1.1 itojun
461 1.8 thorpej callout_init(&sc->sc_diag_ch);
462 1.8 thorpej
463 1.1 itojun if (irq != IRQUNK) {
464 1.1 itojun sc->sc_ih = shb_intr_establish(SCIF_IRQ,
465 1.1 itojun IST_EDGE, IPL_SERIAL, scifintr, sc);
466 1.1 itojun }
467 1.1 itojun
468 1.9 msaitoh SET(sc->sc_hwflags, SCIF_HW_DEV_OK);
469 1.1 itojun
470 1.1 itojun tp = ttymalloc();
471 1.1 itojun tp->t_oproc = scifstart;
472 1.1 itojun tp->t_param = scifparam;
473 1.1 itojun tp->t_hwiflow = NULL;
474 1.1 itojun
475 1.1 itojun sc->sc_tty = tp;
476 1.1 itojun sc->sc_rbuf = malloc(scif_rbuf_size << 1, M_DEVBUF, M_NOWAIT);
477 1.1 itojun if (sc->sc_rbuf == NULL) {
478 1.1 itojun printf("%s: unable to allocate ring buffer\n",
479 1.1 itojun sc->sc_dev.dv_xname);
480 1.1 itojun return;
481 1.1 itojun }
482 1.1 itojun sc->sc_ebuf = sc->sc_rbuf + (scif_rbuf_size << 1);
483 1.1 itojun
484 1.1 itojun tty_attach(tp);
485 1.1 itojun }
486 1.1 itojun
487 1.1 itojun /*
488 1.1 itojun * Start or restart transmission.
489 1.1 itojun */
490 1.1 itojun static void
491 1.20 uch scifstart(struct tty *tp)
492 1.1 itojun {
493 1.1 itojun struct scif_softc *sc = scif_cd.cd_devs[SCIFUNIT(tp->t_dev)];
494 1.1 itojun int s;
495 1.1 itojun
496 1.1 itojun s = spltty();
497 1.1 itojun if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP))
498 1.1 itojun goto out;
499 1.1 itojun if (sc->sc_tx_stopped)
500 1.1 itojun goto out;
501 1.1 itojun
502 1.1 itojun if (tp->t_outq.c_cc <= tp->t_lowat) {
503 1.1 itojun if (ISSET(tp->t_state, TS_ASLEEP)) {
504 1.1 itojun CLR(tp->t_state, TS_ASLEEP);
505 1.1 itojun wakeup(&tp->t_outq);
506 1.1 itojun }
507 1.1 itojun selwakeup(&tp->t_wsel);
508 1.1 itojun if (tp->t_outq.c_cc == 0)
509 1.1 itojun goto out;
510 1.1 itojun }
511 1.1 itojun
512 1.1 itojun /* Grab the first contiguous region of buffer space. */
513 1.1 itojun {
514 1.1 itojun u_char *tba;
515 1.1 itojun int tbc;
516 1.1 itojun
517 1.1 itojun tba = tp->t_outq.c_cf;
518 1.1 itojun tbc = ndqb(&tp->t_outq, 0);
519 1.1 itojun
520 1.1 itojun (void)splserial();
521 1.1 itojun
522 1.1 itojun sc->sc_tba = tba;
523 1.1 itojun sc->sc_tbc = tbc;
524 1.1 itojun }
525 1.1 itojun
526 1.1 itojun SET(tp->t_state, TS_BUSY);
527 1.1 itojun sc->sc_tx_busy = 1;
528 1.1 itojun
529 1.1 itojun /* Enable transmit completion interrupts if necessary. */
530 1.1 itojun SHREG_SCSCR2 |= SCSCR2_TIE | SCSCR2_RIE;
531 1.1 itojun
532 1.1 itojun /* Output the first chunk of the contiguous buffer. */
533 1.1 itojun {
534 1.1 itojun int n;
535 1.1 itojun int max;
536 1.1 itojun int i;
537 1.1 itojun
538 1.1 itojun n = sc->sc_tbc;
539 1.1 itojun max = sc->sc_fifolen - ((SHREG_SCFDR2 & SCFDR2_TXCNT) >> 8);
540 1.1 itojun if (n > max)
541 1.1 itojun n = max;
542 1.1 itojun
543 1.1 itojun for (i = 0; i < n; i++) {
544 1.14 msaitoh scif_putc(*(sc->sc_tba));
545 1.1 itojun sc->sc_tba++;
546 1.1 itojun }
547 1.1 itojun sc->sc_tbc -= n;
548 1.1 itojun }
549 1.1 itojun out:
550 1.1 itojun splx(s);
551 1.1 itojun return;
552 1.1 itojun }
553 1.1 itojun
554 1.1 itojun /*
555 1.1 itojun * Set SCIF tty parameters from termios.
556 1.1 itojun * XXX - Should just copy the whole termios after
557 1.1 itojun * making sure all the changes could be done.
558 1.1 itojun */
559 1.1 itojun static int
560 1.20 uch scifparam(struct tty *tp, struct termios *t)
561 1.1 itojun {
562 1.1 itojun struct scif_softc *sc = scif_cd.cd_devs[SCIFUNIT(tp->t_dev)];
563 1.1 itojun int ospeed = t->c_ospeed;
564 1.1 itojun int s;
565 1.1 itojun
566 1.1 itojun if (ISSET(sc->sc_dev.dv_flags, DVF_ACTIVE) == 0)
567 1.1 itojun return (EIO);
568 1.1 itojun
569 1.1 itojun /* Check requested parameters. */
570 1.1 itojun if (ospeed < 0)
571 1.1 itojun return (EINVAL);
572 1.1 itojun if (t->c_ispeed && t->c_ispeed != t->c_ospeed)
573 1.1 itojun return (EINVAL);
574 1.1 itojun
575 1.1 itojun /*
576 1.1 itojun * For the console, always force CLOCAL and !HUPCL, so that the port
577 1.1 itojun * is always active.
578 1.1 itojun */
579 1.1 itojun if (ISSET(sc->sc_swflags, TIOCFLAG_SOFTCAR) ||
580 1.1 itojun ISSET(sc->sc_hwflags, SCIF_HW_CONSOLE)) {
581 1.1 itojun SET(t->c_cflag, CLOCAL);
582 1.1 itojun CLR(t->c_cflag, HUPCL);
583 1.1 itojun }
584 1.1 itojun
585 1.1 itojun /*
586 1.1 itojun * If there were no changes, don't do anything. This avoids dropping
587 1.1 itojun * input and improves performance when all we did was frob things like
588 1.1 itojun * VMIN and VTIME.
589 1.1 itojun */
590 1.1 itojun if (tp->t_ospeed == t->c_ospeed &&
591 1.1 itojun tp->t_cflag == t->c_cflag)
592 1.1 itojun return (0);
593 1.1 itojun
594 1.1 itojun #if 0
595 1.1 itojun /* XXX (msaitoh) */
596 1.1 itojun lcr = ISSET(sc->sc_lcr, LCR_SBREAK) | cflag2lcr(t->c_cflag);
597 1.1 itojun #endif
598 1.1 itojun
599 1.1 itojun s = splserial();
600 1.1 itojun
601 1.1 itojun /*
602 1.1 itojun * Set the flow control pins depending on the current flow control
603 1.1 itojun * mode.
604 1.1 itojun */
605 1.1 itojun if (ISSET(t->c_cflag, CRTSCTS)) {
606 1.1 itojun SHREG_SCFCR2 |= SCFCR2_MCE;
607 1.1 itojun } else {
608 1.1 itojun SHREG_SCFCR2 &= ~SCFCR2_MCE;
609 1.1 itojun }
610 1.1 itojun
611 1.21 uch SHREG_SCBRR2 = divrnd(sh_clock_get_pclock(), 32 * ospeed) -1;
612 1.1 itojun
613 1.1 itojun /*
614 1.1 itojun * Set the FIFO threshold based on the receive speed.
615 1.1 itojun *
616 1.1 itojun * * If it's a low speed, it's probably a mouse or some other
617 1.1 itojun * interactive device, so set the threshold low.
618 1.1 itojun * * If it's a high speed, trim the trigger level down to prevent
619 1.1 itojun * overflows.
620 1.1 itojun * * Otherwise set it a bit higher.
621 1.1 itojun */
622 1.1 itojun #if 0
623 1.1 itojun /* XXX (msaitoh) */
624 1.1 itojun if (ISSET(sc->sc_hwflags, SCIF_HW_HAYESP))
625 1.1 itojun sc->sc_fifo = FIFO_DMA_MODE | FIFO_ENABLE | FIFO_TRIGGER_8;
626 1.1 itojun else if (ISSET(sc->sc_hwflags, SCIF_HW_FIFO))
627 1.1 itojun sc->sc_fifo = FIFO_ENABLE |
628 1.1 itojun (t->c_ospeed <= 1200 ? FIFO_TRIGGER_1 :
629 1.1 itojun t->c_ospeed <= 38400 ? FIFO_TRIGGER_8 : FIFO_TRIGGER_4);
630 1.1 itojun else
631 1.1 itojun sc->sc_fifo = 0;
632 1.1 itojun #endif
633 1.1 itojun
634 1.1 itojun /* And copy to tty. */
635 1.1 itojun tp->t_ispeed = 0;
636 1.1 itojun tp->t_ospeed = t->c_ospeed;
637 1.1 itojun tp->t_cflag = t->c_cflag;
638 1.1 itojun
639 1.1 itojun if (!sc->sc_heldchange) {
640 1.1 itojun if (sc->sc_tx_busy) {
641 1.1 itojun sc->sc_heldtbc = sc->sc_tbc;
642 1.1 itojun sc->sc_tbc = 0;
643 1.1 itojun sc->sc_heldchange = 1;
644 1.1 itojun }
645 1.1 itojun #if 0
646 1.1 itojun /* XXX (msaitoh) */
647 1.1 itojun else
648 1.1 itojun scif_loadchannelregs(sc);
649 1.1 itojun #endif
650 1.1 itojun }
651 1.1 itojun
652 1.1 itojun if (!ISSET(t->c_cflag, CHWFLOW)) {
653 1.1 itojun /* Disable the high water mark. */
654 1.1 itojun sc->sc_r_hiwat = 0;
655 1.1 itojun sc->sc_r_lowat = 0;
656 1.1 itojun if (ISSET(sc->sc_rx_flags, RX_TTY_OVERFLOWED)) {
657 1.1 itojun CLR(sc->sc_rx_flags, RX_TTY_OVERFLOWED);
658 1.1 itojun scif_schedrx(sc);
659 1.1 itojun }
660 1.1 itojun } else {
661 1.1 itojun sc->sc_r_hiwat = scif_rbuf_hiwat;
662 1.1 itojun sc->sc_r_lowat = scif_rbuf_lowat;
663 1.1 itojun }
664 1.1 itojun
665 1.1 itojun splx(s);
666 1.1 itojun
667 1.1 itojun #ifdef SCIF_DEBUG
668 1.1 itojun if (scif_debug)
669 1.1 itojun scifstatus(sc, "scifparam ");
670 1.1 itojun #endif
671 1.1 itojun
672 1.1 itojun if (!ISSET(t->c_cflag, CHWFLOW)) {
673 1.1 itojun if (sc->sc_tx_stopped) {
674 1.1 itojun sc->sc_tx_stopped = 0;
675 1.1 itojun scifstart(tp);
676 1.1 itojun }
677 1.1 itojun }
678 1.1 itojun
679 1.1 itojun return (0);
680 1.1 itojun }
681 1.1 itojun
682 1.1 itojun void
683 1.20 uch scif_iflush(struct scif_softc *sc)
684 1.1 itojun {
685 1.1 itojun int i;
686 1.1 itojun unsigned char c;
687 1.1 itojun
688 1.1 itojun i = SHREG_SCFDR2 & SCFDR2_RECVCNT;
689 1.1 itojun
690 1.1 itojun while (i > 0) {
691 1.1 itojun c = SHREG_SCFRDR2;
692 1.1 itojun SHREG_SCSSR2 &= ~(SCSSR2_RDF | SCSSR2_DR);
693 1.1 itojun i--;
694 1.1 itojun }
695 1.1 itojun }
696 1.1 itojun
697 1.1 itojun int
698 1.20 uch scifopen(dev_t dev, int flag, int mode, struct proc *p)
699 1.1 itojun {
700 1.1 itojun int unit = SCIFUNIT(dev);
701 1.1 itojun struct scif_softc *sc;
702 1.1 itojun struct tty *tp;
703 1.1 itojun int s, s2;
704 1.1 itojun int error;
705 1.1 itojun
706 1.1 itojun if (unit >= scif_cd.cd_ndevs)
707 1.1 itojun return (ENXIO);
708 1.1 itojun sc = scif_cd.cd_devs[unit];
709 1.1 itojun if (sc == 0 || !ISSET(sc->sc_hwflags, SCIF_HW_DEV_OK) ||
710 1.1 itojun sc->sc_rbuf == NULL)
711 1.1 itojun return (ENXIO);
712 1.1 itojun
713 1.1 itojun if (ISSET(sc->sc_dev.dv_flags, DVF_ACTIVE) == 0)
714 1.1 itojun return (ENXIO);
715 1.1 itojun
716 1.1 itojun #ifdef KGDB
717 1.1 itojun /*
718 1.1 itojun * If this is the kgdb port, no other use is permitted.
719 1.1 itojun */
720 1.1 itojun if (ISSET(sc->sc_hwflags, SCIF_HW_KGDB))
721 1.1 itojun return (EBUSY);
722 1.22 uch #endif /* KGDB */
723 1.1 itojun
724 1.1 itojun tp = sc->sc_tty;
725 1.1 itojun
726 1.1 itojun if (ISSET(tp->t_state, TS_ISOPEN) &&
727 1.1 itojun ISSET(tp->t_state, TS_XCLUDE) &&
728 1.1 itojun p->p_ucred->cr_uid != 0)
729 1.1 itojun return (EBUSY);
730 1.1 itojun
731 1.1 itojun s = spltty();
732 1.1 itojun
733 1.1 itojun /*
734 1.1 itojun * Do the following iff this is a first open.
735 1.1 itojun */
736 1.1 itojun if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) {
737 1.1 itojun struct termios t;
738 1.1 itojun
739 1.1 itojun tp->t_dev = dev;
740 1.1 itojun
741 1.1 itojun s2 = splserial();
742 1.1 itojun
743 1.1 itojun /* Turn on interrupts. */
744 1.1 itojun SHREG_SCSCR2 |= SCSCR2_TIE | SCSCR2_RIE;
745 1.1 itojun
746 1.1 itojun splx(s2);
747 1.1 itojun
748 1.1 itojun /*
749 1.1 itojun * Initialize the termios status to the defaults. Add in the
750 1.1 itojun * sticky bits from TIOCSFLAGS.
751 1.1 itojun */
752 1.1 itojun t.c_ispeed = 0;
753 1.1 itojun if (ISSET(sc->sc_hwflags, SCIF_HW_CONSOLE)) {
754 1.7 msaitoh t.c_ospeed = scifcn_speed; /* XXX (msaitoh) */
755 1.1 itojun t.c_cflag = scifconscflag;
756 1.1 itojun } else {
757 1.1 itojun t.c_ospeed = TTYDEF_SPEED;
758 1.1 itojun t.c_cflag = TTYDEF_CFLAG;
759 1.1 itojun }
760 1.1 itojun if (ISSET(sc->sc_swflags, TIOCFLAG_CLOCAL))
761 1.1 itojun SET(t.c_cflag, CLOCAL);
762 1.1 itojun if (ISSET(sc->sc_swflags, TIOCFLAG_CRTSCTS))
763 1.1 itojun SET(t.c_cflag, CRTSCTS);
764 1.1 itojun if (ISSET(sc->sc_swflags, TIOCFLAG_MDMBUF))
765 1.1 itojun SET(t.c_cflag, MDMBUF);
766 1.1 itojun /* Make sure scifparam() will do something. */
767 1.1 itojun tp->t_ospeed = 0;
768 1.1 itojun (void) scifparam(tp, &t);
769 1.1 itojun tp->t_iflag = TTYDEF_IFLAG;
770 1.1 itojun tp->t_oflag = TTYDEF_OFLAG;
771 1.1 itojun tp->t_lflag = TTYDEF_LFLAG;
772 1.1 itojun ttychars(tp);
773 1.1 itojun ttsetwater(tp);
774 1.1 itojun
775 1.1 itojun s2 = splserial();
776 1.1 itojun
777 1.1 itojun /* Clear the input ring, and unblock. */
778 1.1 itojun sc->sc_rbput = sc->sc_rbget = sc->sc_rbuf;
779 1.1 itojun sc->sc_rbavail = scif_rbuf_size;
780 1.1 itojun scif_iflush(sc);
781 1.1 itojun CLR(sc->sc_rx_flags, RX_ANY_BLOCK);
782 1.1 itojun #if 0
783 1.1 itojun /* XXX (msaitoh) */
784 1.1 itojun scif_hwiflow(sc);
785 1.1 itojun #endif
786 1.1 itojun
787 1.1 itojun #ifdef SCIF_DEBUG
788 1.1 itojun if (scif_debug)
789 1.1 itojun scifstatus(sc, "scifopen ");
790 1.1 itojun #endif
791 1.1 itojun
792 1.1 itojun splx(s2);
793 1.1 itojun }
794 1.1 itojun
795 1.1 itojun splx(s);
796 1.1 itojun
797 1.1 itojun error = ttyopen(tp, SCIFDIALOUT(dev), ISSET(flag, O_NONBLOCK));
798 1.1 itojun if (error)
799 1.1 itojun goto bad;
800 1.1 itojun
801 1.13 eeh error = (*tp->t_linesw->l_open)(dev, tp);
802 1.1 itojun if (error)
803 1.1 itojun goto bad;
804 1.1 itojun
805 1.1 itojun return (0);
806 1.1 itojun
807 1.1 itojun bad:
808 1.1 itojun
809 1.1 itojun return (error);
810 1.1 itojun }
811 1.1 itojun
812 1.1 itojun int
813 1.20 uch scifclose(dev_t dev, int flag, int mode, struct proc *p)
814 1.1 itojun {
815 1.1 itojun struct scif_softc *sc = scif_cd.cd_devs[SCIFUNIT(dev)];
816 1.1 itojun struct tty *tp = sc->sc_tty;
817 1.1 itojun
818 1.1 itojun /* XXX This is for cons.c. */
819 1.1 itojun if (!ISSET(tp->t_state, TS_ISOPEN))
820 1.1 itojun return (0);
821 1.1 itojun
822 1.13 eeh (*tp->t_linesw->l_close)(tp, flag);
823 1.1 itojun ttyclose(tp);
824 1.1 itojun
825 1.1 itojun if (ISSET(sc->sc_dev.dv_flags, DVF_ACTIVE) == 0)
826 1.1 itojun return (0);
827 1.1 itojun
828 1.1 itojun return (0);
829 1.1 itojun }
830 1.1 itojun
831 1.1 itojun int
832 1.20 uch scifread(dev_t dev, struct uio *uio, int flag)
833 1.1 itojun {
834 1.1 itojun struct scif_softc *sc = scif_cd.cd_devs[SCIFUNIT(dev)];
835 1.1 itojun struct tty *tp = sc->sc_tty;
836 1.1 itojun
837 1.13 eeh return ((*tp->t_linesw->l_read)(tp, uio, flag));
838 1.1 itojun }
839 1.1 itojun
840 1.1 itojun int
841 1.20 uch scifwrite(dev_t dev, struct uio *uio, int flag)
842 1.1 itojun {
843 1.1 itojun struct scif_softc *sc = scif_cd.cd_devs[SCIFUNIT(dev)];
844 1.1 itojun struct tty *tp = sc->sc_tty;
845 1.1 itojun
846 1.13 eeh return ((*tp->t_linesw->l_write)(tp, uio, flag));
847 1.16 scw }
848 1.16 scw
849 1.16 scw int
850 1.20 uch scifpoll(dev_t dev, int events, struct proc *p)
851 1.16 scw {
852 1.16 scw struct scif_softc *sc = scif_cd.cd_devs[SCIFUNIT(dev)];
853 1.16 scw struct tty *tp = sc->sc_tty;
854 1.16 scw
855 1.16 scw return ((*tp->t_linesw->l_poll)(tp, events, p));
856 1.1 itojun }
857 1.1 itojun
858 1.1 itojun struct tty *
859 1.20 uch sciftty(dev_t dev)
860 1.1 itojun {
861 1.1 itojun struct scif_softc *sc = scif_cd.cd_devs[SCIFUNIT(dev)];
862 1.1 itojun struct tty *tp = sc->sc_tty;
863 1.1 itojun
864 1.1 itojun return (tp);
865 1.1 itojun }
866 1.1 itojun
867 1.1 itojun int
868 1.20 uch scifioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
869 1.1 itojun {
870 1.1 itojun struct scif_softc *sc = scif_cd.cd_devs[SCIFUNIT(dev)];
871 1.1 itojun struct tty *tp = sc->sc_tty;
872 1.1 itojun int error;
873 1.1 itojun int s;
874 1.1 itojun
875 1.1 itojun if (ISSET(sc->sc_dev.dv_flags, DVF_ACTIVE) == 0)
876 1.1 itojun return (EIO);
877 1.1 itojun
878 1.13 eeh error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, p);
879 1.23 atatat if (error != EPASSTHROUGH)
880 1.1 itojun return (error);
881 1.1 itojun
882 1.1 itojun error = ttioctl(tp, cmd, data, flag, p);
883 1.23 atatat if (error != EPASSTHROUGH)
884 1.1 itojun return (error);
885 1.1 itojun
886 1.1 itojun error = 0;
887 1.1 itojun
888 1.1 itojun s = splserial();
889 1.1 itojun
890 1.1 itojun switch (cmd) {
891 1.1 itojun case TIOCSBRK:
892 1.1 itojun scif_break(sc, 1);
893 1.1 itojun break;
894 1.1 itojun
895 1.1 itojun case TIOCCBRK:
896 1.1 itojun scif_break(sc, 0);
897 1.1 itojun break;
898 1.6 msaitoh
899 1.1 itojun case TIOCGFLAGS:
900 1.1 itojun *(int *)data = sc->sc_swflags;
901 1.1 itojun break;
902 1.1 itojun
903 1.1 itojun case TIOCSFLAGS:
904 1.1 itojun error = suser(p->p_ucred, &p->p_acflag);
905 1.1 itojun if (error)
906 1.1 itojun break;
907 1.1 itojun sc->sc_swflags = *(int *)data;
908 1.1 itojun break;
909 1.1 itojun
910 1.1 itojun default:
911 1.23 atatat error = EPASSTHROUGH;
912 1.1 itojun break;
913 1.1 itojun }
914 1.1 itojun
915 1.1 itojun splx(s);
916 1.1 itojun
917 1.1 itojun return (error);
918 1.1 itojun }
919 1.1 itojun
920 1.1 itojun integrate void
921 1.20 uch scif_schedrx(struct scif_softc *sc)
922 1.1 itojun {
923 1.1 itojun
924 1.1 itojun sc->sc_rx_ready = 1;
925 1.1 itojun
926 1.1 itojun /* Wake up the poller. */
927 1.15 thorpej #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS
928 1.1 itojun softintr_schedule(sc->sc_si);
929 1.1 itojun #else
930 1.1 itojun #ifndef __NO_SOFT_SERIAL_INTERRUPT
931 1.1 itojun setsoftserial();
932 1.1 itojun #else
933 1.1 itojun if (!scif_softintr_scheduled) {
934 1.1 itojun scif_softintr_scheduled = 1;
935 1.8 thorpej callout_reset(&scif_soft_ch, 1, scifsoft, NULL);
936 1.1 itojun }
937 1.1 itojun #endif
938 1.1 itojun #endif
939 1.1 itojun }
940 1.1 itojun
941 1.6 msaitoh void
942 1.20 uch scif_break(struct scif_softc *sc, int onoff)
943 1.6 msaitoh {
944 1.6 msaitoh
945 1.6 msaitoh if (onoff)
946 1.6 msaitoh SHREG_SCSSR2 &= ~SCSSR2_TDFE;
947 1.6 msaitoh else
948 1.6 msaitoh SHREG_SCSSR2 |= SCSSR2_TDFE;
949 1.6 msaitoh
950 1.6 msaitoh #if 0 /* XXX */
951 1.6 msaitoh if (!sc->sc_heldchange) {
952 1.6 msaitoh if (sc->sc_tx_busy) {
953 1.6 msaitoh sc->sc_heldtbc = sc->sc_tbc;
954 1.6 msaitoh sc->sc_tbc = 0;
955 1.6 msaitoh sc->sc_heldchange = 1;
956 1.6 msaitoh } else
957 1.6 msaitoh scif_loadchannelregs(sc);
958 1.6 msaitoh }
959 1.6 msaitoh #endif
960 1.6 msaitoh }
961 1.6 msaitoh
962 1.1 itojun /*
963 1.1 itojun * Stop output, e.g., for ^S or output flush.
964 1.1 itojun */
965 1.1 itojun void
966 1.20 uch scifstop(struct tty *tp, int flag)
967 1.1 itojun {
968 1.1 itojun struct scif_softc *sc = scif_cd.cd_devs[SCIFUNIT(tp->t_dev)];
969 1.1 itojun int s;
970 1.1 itojun
971 1.1 itojun s = splserial();
972 1.1 itojun if (ISSET(tp->t_state, TS_BUSY)) {
973 1.1 itojun /* Stop transmitting at the next chunk. */
974 1.1 itojun sc->sc_tbc = 0;
975 1.1 itojun sc->sc_heldtbc = 0;
976 1.1 itojun if (!ISSET(tp->t_state, TS_TTSTOP))
977 1.1 itojun SET(tp->t_state, TS_FLUSH);
978 1.1 itojun }
979 1.1 itojun splx(s);
980 1.1 itojun }
981 1.1 itojun
982 1.1 itojun void
983 1.1 itojun scif_intr_init()
984 1.1 itojun {
985 1.1 itojun /* XXX */
986 1.1 itojun }
987 1.1 itojun
988 1.1 itojun void
989 1.20 uch scifdiag(void *arg)
990 1.1 itojun {
991 1.1 itojun struct scif_softc *sc = arg;
992 1.1 itojun int overflows, floods;
993 1.1 itojun int s;
994 1.1 itojun
995 1.1 itojun s = splserial();
996 1.1 itojun overflows = sc->sc_overflows;
997 1.1 itojun sc->sc_overflows = 0;
998 1.1 itojun floods = sc->sc_floods;
999 1.1 itojun sc->sc_floods = 0;
1000 1.1 itojun sc->sc_errors = 0;
1001 1.1 itojun splx(s);
1002 1.1 itojun
1003 1.1 itojun log(LOG_WARNING, "%s: %d silo overflow%s, %d ibuf flood%s\n",
1004 1.1 itojun sc->sc_dev.dv_xname,
1005 1.1 itojun overflows, overflows == 1 ? "" : "s",
1006 1.1 itojun floods, floods == 1 ? "" : "s");
1007 1.1 itojun }
1008 1.1 itojun
1009 1.1 itojun integrate void
1010 1.20 uch scif_rxsoft(struct scif_softc *sc, struct tty *tp)
1011 1.1 itojun {
1012 1.20 uch int (*rint)(int c, struct tty *tp) = tp->t_linesw->l_rint;
1013 1.1 itojun u_char *get, *end;
1014 1.1 itojun u_int cc, scc;
1015 1.1 itojun u_char ssr2;
1016 1.1 itojun int code;
1017 1.1 itojun int s;
1018 1.1 itojun
1019 1.1 itojun end = sc->sc_ebuf;
1020 1.1 itojun get = sc->sc_rbget;
1021 1.1 itojun scc = cc = scif_rbuf_size - sc->sc_rbavail;
1022 1.1 itojun
1023 1.1 itojun if (cc == scif_rbuf_size) {
1024 1.1 itojun sc->sc_floods++;
1025 1.1 itojun if (sc->sc_errors++ == 0)
1026 1.11 msaitoh callout_reset(&sc->sc_diag_ch, 60 * hz, scifdiag, sc);
1027 1.1 itojun }
1028 1.1 itojun
1029 1.1 itojun while (cc) {
1030 1.1 itojun code = get[0];
1031 1.1 itojun ssr2 = get[1];
1032 1.6 msaitoh if (ISSET(ssr2, SCSSR2_BRK | SCSSR2_FER | SCSSR2_PER)) {
1033 1.6 msaitoh if (ISSET(ssr2, SCSSR2_BRK | SCSSR2_FER))
1034 1.1 itojun SET(code, TTY_FE);
1035 1.1 itojun if (ISSET(ssr2, SCSSR2_PER))
1036 1.1 itojun SET(code, TTY_PE);
1037 1.1 itojun }
1038 1.1 itojun if ((*rint)(code, tp) == -1) {
1039 1.1 itojun /*
1040 1.1 itojun * The line discipline's buffer is out of space.
1041 1.1 itojun */
1042 1.1 itojun if (!ISSET(sc->sc_rx_flags, RX_TTY_BLOCKED)) {
1043 1.1 itojun /*
1044 1.1 itojun * We're either not using flow control, or the
1045 1.1 itojun * line discipline didn't tell us to block for
1046 1.1 itojun * some reason. Either way, we have no way to
1047 1.1 itojun * know when there's more space available, so
1048 1.1 itojun * just drop the rest of the data.
1049 1.1 itojun */
1050 1.1 itojun get += cc << 1;
1051 1.1 itojun if (get >= end)
1052 1.1 itojun get -= scif_rbuf_size << 1;
1053 1.1 itojun cc = 0;
1054 1.1 itojun } else {
1055 1.1 itojun /*
1056 1.1 itojun * Don't schedule any more receive processing
1057 1.1 itojun * until the line discipline tells us there's
1058 1.1 itojun * space available (through scifhwiflow()).
1059 1.1 itojun * Leave the rest of the data in the input
1060 1.1 itojun * buffer.
1061 1.1 itojun */
1062 1.1 itojun SET(sc->sc_rx_flags, RX_TTY_OVERFLOWED);
1063 1.1 itojun }
1064 1.1 itojun break;
1065 1.1 itojun }
1066 1.1 itojun get += 2;
1067 1.1 itojun if (get >= end)
1068 1.1 itojun get = sc->sc_rbuf;
1069 1.1 itojun cc--;
1070 1.1 itojun }
1071 1.1 itojun
1072 1.1 itojun if (cc != scc) {
1073 1.1 itojun sc->sc_rbget = get;
1074 1.1 itojun s = splserial();
1075 1.1 itojun cc = sc->sc_rbavail += scc - cc;
1076 1.1 itojun /* Buffers should be ok again, release possible block. */
1077 1.1 itojun if (cc >= sc->sc_r_lowat) {
1078 1.1 itojun if (ISSET(sc->sc_rx_flags, RX_IBUF_OVERFLOWED)) {
1079 1.1 itojun CLR(sc->sc_rx_flags, RX_IBUF_OVERFLOWED);
1080 1.1 itojun SHREG_SCSCR2 |= SCSCR2_RIE;
1081 1.1 itojun }
1082 1.1 itojun #if 0
1083 1.1 itojun if (ISSET(sc->sc_rx_flags, RX_IBUF_BLOCKED)) {
1084 1.1 itojun CLR(sc->sc_rx_flags, RX_IBUF_BLOCKED);
1085 1.1 itojun scif_hwiflow(sc);
1086 1.1 itojun }
1087 1.1 itojun #endif
1088 1.1 itojun }
1089 1.1 itojun splx(s);
1090 1.1 itojun }
1091 1.1 itojun }
1092 1.1 itojun
1093 1.1 itojun integrate void
1094 1.20 uch scif_txsoft(struct scif_softc *sc, struct tty *tp)
1095 1.1 itojun {
1096 1.1 itojun
1097 1.1 itojun CLR(tp->t_state, TS_BUSY);
1098 1.1 itojun if (ISSET(tp->t_state, TS_FLUSH))
1099 1.1 itojun CLR(tp->t_state, TS_FLUSH);
1100 1.1 itojun else
1101 1.1 itojun ndflush(&tp->t_outq, (int)(sc->sc_tba - tp->t_outq.c_cf));
1102 1.13 eeh (*tp->t_linesw->l_start)(tp);
1103 1.1 itojun }
1104 1.1 itojun
1105 1.1 itojun integrate void
1106 1.20 uch scif_stsoft(struct scif_softc *sc, struct tty *tp)
1107 1.1 itojun {
1108 1.1 itojun #if 0
1109 1.1 itojun /* XXX (msaitoh) */
1110 1.1 itojun u_char msr, delta;
1111 1.1 itojun int s;
1112 1.1 itojun
1113 1.1 itojun s = splserial();
1114 1.1 itojun msr = sc->sc_msr;
1115 1.1 itojun delta = sc->sc_msr_delta;
1116 1.1 itojun sc->sc_msr_delta = 0;
1117 1.1 itojun splx(s);
1118 1.1 itojun
1119 1.1 itojun if (ISSET(delta, sc->sc_msr_dcd)) {
1120 1.1 itojun /*
1121 1.1 itojun * Inform the tty layer that carrier detect changed.
1122 1.1 itojun */
1123 1.13 eeh (void) (*tp->t_linesw->l_modem)(tp, ISSET(msr, MSR_DCD));
1124 1.1 itojun }
1125 1.1 itojun
1126 1.1 itojun if (ISSET(delta, sc->sc_msr_cts)) {
1127 1.1 itojun /* Block or unblock output according to flow control. */
1128 1.1 itojun if (ISSET(msr, sc->sc_msr_cts)) {
1129 1.1 itojun sc->sc_tx_stopped = 0;
1130 1.13 eeh (*tp->t_linesw->l_start)(tp);
1131 1.1 itojun } else {
1132 1.1 itojun sc->sc_tx_stopped = 1;
1133 1.1 itojun }
1134 1.1 itojun }
1135 1.1 itojun
1136 1.1 itojun #ifdef SCIF_DEBUG
1137 1.1 itojun if (scif_debug)
1138 1.1 itojun scifstatus(sc, "scif_stsoft");
1139 1.1 itojun #endif
1140 1.1 itojun #endif
1141 1.1 itojun }
1142 1.1 itojun
1143 1.15 thorpej #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS
1144 1.1 itojun void
1145 1.20 uch scifsoft(void *arg)
1146 1.1 itojun {
1147 1.1 itojun struct scif_softc *sc = arg;
1148 1.1 itojun struct tty *tp;
1149 1.1 itojun
1150 1.1 itojun if (ISSET(sc->sc_dev.dv_flags, DVF_ACTIVE) == 0)
1151 1.1 itojun return;
1152 1.1 itojun
1153 1.1 itojun {
1154 1.1 itojun #else
1155 1.1 itojun void
1156 1.1 itojun #ifndef __NO_SOFT_SERIAL_INTERRUPT
1157 1.1 itojun scifsoft()
1158 1.1 itojun #else
1159 1.20 uch scifsoft(void *arg)
1160 1.1 itojun #endif
1161 1.1 itojun {
1162 1.1 itojun struct scif_softc *sc;
1163 1.1 itojun struct tty *tp;
1164 1.1 itojun int unit;
1165 1.1 itojun #ifdef __NO_SOFT_SERIAL_INTERRUPT
1166 1.1 itojun int s;
1167 1.1 itojun
1168 1.1 itojun s = splsoftserial();
1169 1.1 itojun scif_softintr_scheduled = 0;
1170 1.1 itojun #endif
1171 1.1 itojun
1172 1.1 itojun for (unit = 0; unit < scif_cd.cd_ndevs; unit++) {
1173 1.1 itojun sc = scif_cd.cd_devs[unit];
1174 1.1 itojun if (sc == NULL || !ISSET(sc->sc_hwflags, SCIF_HW_DEV_OK))
1175 1.1 itojun continue;
1176 1.1 itojun
1177 1.1 itojun if (ISSET(sc->sc_dev.dv_flags, DVF_ACTIVE) == 0)
1178 1.1 itojun continue;
1179 1.1 itojun
1180 1.1 itojun tp = sc->sc_tty;
1181 1.1 itojun if (tp == NULL)
1182 1.1 itojun continue;
1183 1.1 itojun if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0)
1184 1.1 itojun continue;
1185 1.1 itojun #endif
1186 1.1 itojun tp = sc->sc_tty;
1187 1.1 itojun
1188 1.1 itojun if (sc->sc_rx_ready) {
1189 1.1 itojun sc->sc_rx_ready = 0;
1190 1.1 itojun scif_rxsoft(sc, tp);
1191 1.1 itojun }
1192 1.1 itojun
1193 1.1 itojun #if 0
1194 1.1 itojun if (sc->sc_st_check) {
1195 1.1 itojun sc->sc_st_check = 0;
1196 1.1 itojun scif_stsoft(sc, tp);
1197 1.1 itojun }
1198 1.1 itojun #endif
1199 1.1 itojun
1200 1.1 itojun if (sc->sc_tx_done) {
1201 1.1 itojun sc->sc_tx_done = 0;
1202 1.1 itojun scif_txsoft(sc, tp);
1203 1.1 itojun }
1204 1.1 itojun }
1205 1.1 itojun
1206 1.15 thorpej #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS
1207 1.1 itojun #ifdef __NO_SOFT_SERIAL_INTERRUPT
1208 1.1 itojun splx(s);
1209 1.1 itojun #endif
1210 1.1 itojun #endif
1211 1.1 itojun }
1212 1.1 itojun
1213 1.1 itojun int
1214 1.20 uch scifintr(void *arg)
1215 1.1 itojun {
1216 1.1 itojun struct scif_softc *sc = arg;
1217 1.1 itojun u_char *put, *end;
1218 1.1 itojun u_int cc;
1219 1.1 itojun u_short ssr2;
1220 1.1 itojun int count;
1221 1.1 itojun
1222 1.1 itojun if (ISSET(sc->sc_dev.dv_flags, DVF_ACTIVE) == 0)
1223 1.1 itojun return (0);
1224 1.1 itojun
1225 1.1 itojun end = sc->sc_ebuf;
1226 1.1 itojun put = sc->sc_rbput;
1227 1.1 itojun cc = sc->sc_rbavail;
1228 1.1 itojun
1229 1.7 msaitoh ssr2 = SHREG_SCSSR2;
1230 1.7 msaitoh if (ISSET(ssr2, SCSSR2_BRK)) {
1231 1.7 msaitoh SHREG_SCSSR2 &= ~(SCSSR2_ER | SCSSR2_BRK | SCSSR2_DR);
1232 1.1 itojun #ifdef DDB
1233 1.7 msaitoh if (ISSET(sc->sc_hwflags, SCIF_HW_CONSOLE)) {
1234 1.7 msaitoh console_debugger();
1235 1.7 msaitoh }
1236 1.22 uch #endif /* DDB */
1237 1.1 itojun #ifdef KGDB
1238 1.7 msaitoh if (ISSET(sc->sc_hwflags, SCIF_HW_KGDB)) {
1239 1.7 msaitoh kgdb_connect(1);
1240 1.7 msaitoh }
1241 1.22 uch #endif /* KGDB */
1242 1.7 msaitoh }
1243 1.7 msaitoh count = SHREG_SCFDR2 & SCFDR2_RECVCNT;
1244 1.7 msaitoh if (count != 0) {
1245 1.7 msaitoh while ((cc > 0) && (count > 0)) {
1246 1.7 msaitoh put[0] = SHREG_SCFRDR2;
1247 1.7 msaitoh put[1] = (u_char)(SHREG_SCSSR2 & 0x00ff);
1248 1.7 msaitoh
1249 1.10 msaitoh SHREG_SCSSR2 &= ~(SCSSR2_ER | SCSSR2_RDF | SCSSR2_DR);
1250 1.7 msaitoh
1251 1.7 msaitoh put += 2;
1252 1.7 msaitoh if (put >= end)
1253 1.7 msaitoh put = sc->sc_rbuf;
1254 1.7 msaitoh cc--;
1255 1.7 msaitoh count--;
1256 1.1 itojun }
1257 1.1 itojun
1258 1.7 msaitoh /*
1259 1.7 msaitoh * Current string of incoming characters ended because
1260 1.7 msaitoh * no more data was available or we ran out of space.
1261 1.7 msaitoh * Schedule a receive event if any data was received.
1262 1.7 msaitoh * If we're out of space, turn off receive interrupts.
1263 1.7 msaitoh */
1264 1.7 msaitoh sc->sc_rbput = put;
1265 1.7 msaitoh sc->sc_rbavail = cc;
1266 1.7 msaitoh if (!ISSET(sc->sc_rx_flags, RX_TTY_OVERFLOWED))
1267 1.7 msaitoh sc->sc_rx_ready = 1;
1268 1.1 itojun
1269 1.7 msaitoh /*
1270 1.7 msaitoh * See if we are in danger of overflowing a buffer. If
1271 1.7 msaitoh * so, use hardware flow control to ease the pressure.
1272 1.7 msaitoh */
1273 1.7 msaitoh if (!ISSET(sc->sc_rx_flags, RX_IBUF_BLOCKED) &&
1274 1.7 msaitoh cc < sc->sc_r_hiwat) {
1275 1.7 msaitoh SET(sc->sc_rx_flags, RX_IBUF_BLOCKED);
1276 1.1 itojun #if 0
1277 1.7 msaitoh scif_hwiflow(sc);
1278 1.1 itojun #endif
1279 1.7 msaitoh }
1280 1.1 itojun
1281 1.7 msaitoh /*
1282 1.7 msaitoh * If we're out of space, disable receive interrupts
1283 1.7 msaitoh * until the queue has drained a bit.
1284 1.7 msaitoh */
1285 1.7 msaitoh if (!cc) {
1286 1.7 msaitoh SHREG_SCSCR2 &= ~SCSCR2_RIE;
1287 1.7 msaitoh }
1288 1.7 msaitoh } else {
1289 1.7 msaitoh if (SHREG_SCSSR2 & (SCSSR2_RDF | SCSSR2_DR)) {
1290 1.7 msaitoh SHREG_SCSCR2 &= ~(SCSCR2_TIE | SCSCR2_RIE);
1291 1.1 itojun }
1292 1.7 msaitoh }
1293 1.1 itojun
1294 1.1 itojun #if 0
1295 1.7 msaitoh msr = bus_space_read_1(iot, ioh, scif_msr);
1296 1.7 msaitoh delta = msr ^ sc->sc_msr;
1297 1.7 msaitoh sc->sc_msr = msr;
1298 1.7 msaitoh if (ISSET(delta, sc->sc_msr_mask)) {
1299 1.7 msaitoh SET(sc->sc_msr_delta, delta);
1300 1.1 itojun
1301 1.7 msaitoh /*
1302 1.7 msaitoh * Pulse-per-second clock signal on edge of DCD?
1303 1.7 msaitoh */
1304 1.7 msaitoh if (ISSET(delta, sc->sc_ppsmask)) {
1305 1.7 msaitoh struct timeval tv;
1306 1.7 msaitoh if (ISSET(msr, sc->sc_ppsmask) ==
1307 1.7 msaitoh sc->sc_ppsassert) {
1308 1.7 msaitoh /* XXX nanotime() */
1309 1.7 msaitoh microtime(&tv);
1310 1.7 msaitoh TIMEVAL_TO_TIMESPEC(&tv,
1311 1.7 msaitoh &sc->ppsinfo.assert_timestamp);
1312 1.7 msaitoh if (sc->ppsparam.mode & PPS_OFFSETASSERT) {
1313 1.7 msaitoh timespecadd(&sc->ppsinfo.assert_timestamp,
1314 1.1 itojun &sc->ppsparam.assert_offset,
1315 1.1 itojun &sc->ppsinfo.assert_timestamp);
1316 1.7 msaitoh TIMESPEC_TO_TIMEVAL(&tv, &sc->ppsinfo.assert_timestamp);
1317 1.7 msaitoh }
1318 1.1 itojun
1319 1.1 itojun #ifdef PPS_SYNC
1320 1.7 msaitoh if (sc->ppsparam.mode & PPS_HARDPPSONASSERT)
1321 1.7 msaitoh hardpps(&tv, tv.tv_usec);
1322 1.1 itojun #endif
1323 1.7 msaitoh sc->ppsinfo.assert_sequence++;
1324 1.7 msaitoh sc->ppsinfo.current_mode =
1325 1.7 msaitoh sc->ppsparam.mode;
1326 1.7 msaitoh
1327 1.7 msaitoh } else if (ISSET(msr, sc->sc_ppsmask) ==
1328 1.7 msaitoh sc->sc_ppsclear) {
1329 1.7 msaitoh /* XXX nanotime() */
1330 1.7 msaitoh microtime(&tv);
1331 1.7 msaitoh TIMEVAL_TO_TIMESPEC(&tv,
1332 1.7 msaitoh &sc->ppsinfo.clear_timestamp);
1333 1.7 msaitoh if (sc->ppsparam.mode & PPS_OFFSETCLEAR) {
1334 1.7 msaitoh timespecadd(&sc->ppsinfo.clear_timestamp,
1335 1.1 itojun &sc->ppsparam.clear_offset,
1336 1.1 itojun &sc->ppsinfo.clear_timestamp);
1337 1.7 msaitoh TIMESPEC_TO_TIMEVAL(&tv, &sc->ppsinfo.clear_timestamp);
1338 1.7 msaitoh }
1339 1.1 itojun
1340 1.1 itojun #ifdef PPS_SYNC
1341 1.7 msaitoh if (sc->ppsparam.mode & PPS_HARDPPSONCLEAR)
1342 1.7 msaitoh hardpps(&tv, tv.tv_usec);
1343 1.1 itojun #endif
1344 1.7 msaitoh sc->ppsinfo.clear_sequence++;
1345 1.7 msaitoh sc->ppsinfo.current_mode =
1346 1.7 msaitoh sc->ppsparam.mode;
1347 1.1 itojun }
1348 1.7 msaitoh }
1349 1.1 itojun
1350 1.7 msaitoh /*
1351 1.7 msaitoh * Stop output immediately if we lose the output
1352 1.7 msaitoh * flow control signal or carrier detect.
1353 1.7 msaitoh */
1354 1.7 msaitoh if (ISSET(~msr, sc->sc_msr_mask)) {
1355 1.7 msaitoh sc->sc_tbc = 0;
1356 1.7 msaitoh sc->sc_heldtbc = 0;
1357 1.1 itojun #ifdef SCIF_DEBUG
1358 1.7 msaitoh if (scif_debug)
1359 1.7 msaitoh scifstatus(sc, "scifintr ");
1360 1.1 itojun #endif
1361 1.7 msaitoh }
1362 1.1 itojun
1363 1.7 msaitoh sc->sc_st_check = 1;
1364 1.7 msaitoh }
1365 1.1 itojun #endif
1366 1.1 itojun
1367 1.1 itojun /*
1368 1.1 itojun * Done handling any receive interrupts. See if data can be
1369 1.1 itojun * transmitted as well. Schedule tx done event if no data left
1370 1.1 itojun * and tty was marked busy.
1371 1.1 itojun */
1372 1.7 msaitoh if (((SHREG_SCFDR2 & SCFDR2_TXCNT) >> 8) != 16) { /* XXX (msaitoh) */
1373 1.1 itojun /*
1374 1.1 itojun * If we've delayed a parameter change, do it now, and restart
1375 1.1 itojun * output.
1376 1.1 itojun */
1377 1.1 itojun if (sc->sc_heldchange) {
1378 1.1 itojun sc->sc_heldchange = 0;
1379 1.1 itojun sc->sc_tbc = sc->sc_heldtbc;
1380 1.1 itojun sc->sc_heldtbc = 0;
1381 1.1 itojun }
1382 1.1 itojun
1383 1.1 itojun /* Output the next chunk of the contiguous buffer, if any. */
1384 1.1 itojun if (sc->sc_tbc > 0) {
1385 1.1 itojun int n;
1386 1.1 itojun int max;
1387 1.1 itojun int i;
1388 1.1 itojun
1389 1.1 itojun n = sc->sc_tbc;
1390 1.1 itojun max = sc->sc_fifolen -
1391 1.1 itojun ((SHREG_SCFDR2 & SCFDR2_TXCNT) >> 8);
1392 1.1 itojun if (n > max)
1393 1.1 itojun n = max;
1394 1.1 itojun
1395 1.1 itojun for (i = 0; i < n; i++) {
1396 1.14 msaitoh scif_putc(*(sc->sc_tba));
1397 1.1 itojun sc->sc_tba++;
1398 1.1 itojun }
1399 1.1 itojun sc->sc_tbc -= n;
1400 1.1 itojun } else {
1401 1.1 itojun /* Disable transmit completion interrupts if necessary. */
1402 1.1 itojun #if 0
1403 1.1 itojun if (ISSET(sc->sc_ier, IER_ETXRDY))
1404 1.1 itojun #endif
1405 1.1 itojun SHREG_SCSCR2 &= ~SCSCR2_TIE;
1406 1.1 itojun
1407 1.1 itojun if (sc->sc_tx_busy) {
1408 1.1 itojun sc->sc_tx_busy = 0;
1409 1.1 itojun sc->sc_tx_done = 1;
1410 1.1 itojun }
1411 1.1 itojun }
1412 1.1 itojun }
1413 1.1 itojun
1414 1.1 itojun /* Wake up the poller. */
1415 1.15 thorpej #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS
1416 1.1 itojun softintr_schedule(sc->sc_si);
1417 1.1 itojun #else
1418 1.1 itojun #ifndef __NO_SOFT_SERIAL_INTERRUPT
1419 1.1 itojun setsoftserial();
1420 1.1 itojun #else
1421 1.1 itojun if (!scif_softintr_scheduled) {
1422 1.1 itojun scif_softintr_scheduled = 1;
1423 1.8 thorpej callout_reset(&scif_soft_ch, 1, scifsoft, NULL);
1424 1.1 itojun }
1425 1.1 itojun #endif
1426 1.1 itojun #endif
1427 1.1 itojun
1428 1.1 itojun #if NRND > 0 && defined(RND_SCIF)
1429 1.20 uch rnd_add_uint32(&sc->rnd_source, iir | lsr);
1430 1.1 itojun #endif
1431 1.1 itojun
1432 1.1 itojun return (1);
1433 1.1 itojun }
1434 1.1 itojun
1435 1.1 itojun void
1436 1.20 uch scifcnprobe(struct consdev *cp)
1437 1.1 itojun {
1438 1.1 itojun int maj;
1439 1.1 itojun
1440 1.1 itojun /* locate the major number */
1441 1.1 itojun for (maj = 0; maj < nchrdev; maj++)
1442 1.1 itojun if (cdevsw[maj].d_open == scifopen)
1443 1.1 itojun break;
1444 1.1 itojun
1445 1.1 itojun /* Initialize required fields. */
1446 1.1 itojun cp->cn_dev = makedev(maj, 0);
1447 1.4 msaitoh #ifdef SCIFCONSOLE
1448 1.4 msaitoh cp->cn_pri = CN_REMOTE;
1449 1.4 msaitoh #else
1450 1.1 itojun cp->cn_pri = CN_NORMAL;
1451 1.1 itojun #endif
1452 1.1 itojun }
1453 1.1 itojun
1454 1.1 itojun void
1455 1.20 uch scifcninit(struct consdev *cp)
1456 1.1 itojun {
1457 1.1 itojun
1458 1.7 msaitoh InitializeScif(scifcn_speed);
1459 1.9 msaitoh scifisconsole = 1;
1460 1.1 itojun }
1461 1.1 itojun
1462 1.1 itojun int
1463 1.20 uch scifcngetc(dev_t dev)
1464 1.1 itojun {
1465 1.1 itojun int c;
1466 1.1 itojun int s;
1467 1.1 itojun
1468 1.1 itojun s = splserial();
1469 1.1 itojun c = scif_getc();
1470 1.1 itojun splx(s);
1471 1.1 itojun
1472 1.1 itojun return (c);
1473 1.1 itojun }
1474 1.1 itojun
1475 1.1 itojun void
1476 1.20 uch scifcnputc(dev_t dev, int c)
1477 1.1 itojun {
1478 1.1 itojun int s;
1479 1.1 itojun
1480 1.1 itojun s = splserial();
1481 1.14 msaitoh scif_putc((u_char)c);
1482 1.1 itojun splx(s);
1483 1.1 itojun }
1484 1.22 uch
1485 1.22 uch #ifdef KGDB
1486 1.22 uch int
1487 1.22 uch scif_kgdb_init()
1488 1.22 uch {
1489 1.22 uch
1490 1.22 uch if (strcmp(kgdb_devname, "scif") != 0)
1491 1.22 uch return (1);
1492 1.22 uch
1493 1.22 uch if (scifisconsole)
1494 1.22 uch return (1); /* can't share with console */
1495 1.22 uch
1496 1.22 uch InitializeScif(kgdb_rate);
1497 1.22 uch
1498 1.22 uch kgdb_attach((int (*)(void *))scifcngetc,
1499 1.22 uch (void (*)(void *, int))scifcnputc, NULL);
1500 1.22 uch kgdb_dev = 123; /* unneeded, only to satisfy some tests */
1501 1.22 uch kgdb_attached = 1;
1502 1.22 uch
1503 1.22 uch return (0);
1504 1.22 uch }
1505 1.22 uch #endif /* KGDB */
1506