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1da177e4 LT |
1 | /* $Id: aurora.c,v 1.19 2002/01/08 16:00:16 davem Exp $ |
2 | * linux/drivers/sbus/char/aurora.c -- Aurora multiport driver | |
3 | * | |
4 | * Copyright (c) 1999 by Oliver Aldulea (oli at bv dot ro) | |
5 | * | |
6 | * This code is based on the RISCom/8 multiport serial driver written | |
7 | * by Dmitry Gorodchanin (pgmdsg@ibi.com), based on the Linux serial | |
8 | * driver, written by Linus Torvalds, Theodore T'so and others. | |
9 | * The Aurora multiport programming info was obtained mainly from the | |
10 | * Cirrus Logic CD180 documentation (available on the web), and by | |
11 | * doing heavy tests on the board. Many thanks to Eddie C. Dost for the | |
12 | * help on the sbus interface. | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2 of the License, or | |
17 | * (at your option) any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | * | |
28 | * Revision 1.0 | |
29 | * | |
30 | * This is the first public release. | |
31 | * | |
32 | * Most of the information you need is in the aurora.h file. Please | |
33 | * read that file before reading this one. | |
34 | * | |
35 | * Several parts of the code do not have comments yet. | |
36 | * | |
37 | * n.b. The board can support 115.2 bit rates, but only on a few | |
38 | * ports. The total badwidth of one chip (ports 0-7 or 8-15) is equal | |
39 | * to OSC_FREQ div 16. In case of my board, each chip can take 6 | |
40 | * channels of 115.2 kbaud. This information is not well-tested. | |
41 | * | |
42 | * Fixed to use tty_get_baud_rate(). | |
43 | * Theodore Ts'o <tytso@mit.edu>, 2001-Oct-12 | |
44 | */ | |
45 | ||
46 | #include <linux/module.h> | |
47 | ||
48 | #include <linux/errno.h> | |
49 | #include <linux/sched.h> | |
50 | #ifdef AURORA_INT_DEBUG | |
51 | #include <linux/timer.h> | |
52 | #endif | |
53 | #include <linux/interrupt.h> | |
54 | #include <linux/tty.h> | |
55 | #include <linux/tty_flip.h> | |
56 | #include <linux/major.h> | |
57 | #include <linux/string.h> | |
58 | #include <linux/fcntl.h> | |
59 | #include <linux/mm.h> | |
60 | #include <linux/kernel.h> | |
61 | #include <linux/init.h> | |
62 | #include <linux/delay.h> | |
63 | #include <linux/bitops.h> | |
64 | ||
65 | #include <asm/io.h> | |
66 | #include <asm/irq.h> | |
67 | #include <asm/oplib.h> | |
68 | #include <asm/system.h> | |
69 | #include <asm/kdebug.h> | |
70 | #include <asm/sbus.h> | |
71 | #include <asm/uaccess.h> | |
72 | ||
73 | #include "aurora.h" | |
74 | #include "cd180.h" | |
75 | ||
76 | unsigned char irqs[4] = { | |
77 | 0, 0, 0, 0 | |
78 | }; | |
79 | ||
80 | #ifdef AURORA_INT_DEBUG | |
81 | int irqhit=0; | |
82 | #endif | |
83 | ||
1da177e4 LT |
84 | static struct tty_driver *aurora_driver; |
85 | static struct Aurora_board aurora_board[AURORA_NBOARD] = { | |
86 | {0,}, | |
87 | }; | |
88 | ||
89 | static struct Aurora_port aurora_port[AURORA_TNPORTS] = { | |
90 | { 0, }, | |
91 | }; | |
92 | ||
93 | /* no longer used. static struct Aurora_board * IRQ_to_board[16] = { NULL, } ;*/ | |
94 | static unsigned char * tmp_buf = NULL; | |
1da177e4 LT |
95 | |
96 | DECLARE_TASK_QUEUE(tq_aurora); | |
97 | ||
98 | static inline int aurora_paranoia_check(struct Aurora_port const * port, | |
99 | char *name, const char *routine) | |
100 | { | |
101 | #ifdef AURORA_PARANOIA_CHECK | |
102 | static const char *badmagic = | |
103 | KERN_DEBUG "aurora: Warning: bad aurora port magic number for device %s in %s\n"; | |
104 | static const char *badinfo = | |
105 | KERN_DEBUG "aurora: Warning: null aurora port for device %s in %s\n"; | |
106 | ||
107 | if (!port) { | |
108 | printk(badinfo, name, routine); | |
109 | return 1; | |
110 | } | |
111 | if (port->magic != AURORA_MAGIC) { | |
112 | printk(badmagic, name, routine); | |
113 | return 1; | |
114 | } | |
115 | #endif | |
116 | return 0; | |
117 | } | |
118 | ||
119 | /* | |
120 | * | |
121 | * Service functions for aurora driver. | |
122 | * | |
123 | */ | |
124 | ||
125 | /* Get board number from pointer */ | |
a9b1ef8e | 126 | static inline int board_No (struct Aurora_board const * bp) |
1da177e4 LT |
127 | { |
128 | return bp - aurora_board; | |
129 | } | |
130 | ||
131 | /* Get port number from pointer */ | |
a9b1ef8e | 132 | static inline int port_No (struct Aurora_port const * port) |
1da177e4 LT |
133 | { |
134 | return AURORA_PORT(port - aurora_port); | |
135 | } | |
136 | ||
137 | /* Get pointer to board from pointer to port */ | |
a9b1ef8e | 138 | static inline struct Aurora_board * port_Board(struct Aurora_port const * port) |
1da177e4 LT |
139 | { |
140 | return &aurora_board[AURORA_BOARD(port - aurora_port)]; | |
141 | } | |
142 | ||
143 | /* Wait for Channel Command Register ready */ | |
a9b1ef8e | 144 | static inline void aurora_wait_CCR(struct aurora_reg128 * r) |
1da177e4 LT |
145 | { |
146 | unsigned long delay; | |
147 | ||
148 | #ifdef AURORA_DEBUG | |
149 | printk("aurora_wait_CCR\n"); | |
150 | #endif | |
151 | /* FIXME: need something more descriptive than 100000 :) */ | |
152 | for (delay = 100000; delay; delay--) | |
153 | if (!sbus_readb(&r->r[CD180_CCR])) | |
154 | return; | |
155 | printk(KERN_DEBUG "aurora: Timeout waiting for CCR.\n"); | |
156 | } | |
157 | ||
158 | /* | |
159 | * aurora probe functions. | |
160 | */ | |
161 | ||
162 | /* Must be called with enabled interrupts */ | |
a9b1ef8e | 163 | static inline void aurora_long_delay(unsigned long delay) |
1da177e4 LT |
164 | { |
165 | unsigned long i; | |
166 | ||
167 | #ifdef AURORA_DEBUG | |
168 | printk("aurora_long_delay: start\n"); | |
169 | #endif | |
170 | for (i = jiffies + delay; time_before(jiffies, i); ) ; | |
171 | #ifdef AURORA_DEBUG | |
172 | printk("aurora_long_delay: end\n"); | |
173 | #endif | |
174 | } | |
175 | ||
176 | /* Reset and setup CD180 chip */ | |
177 | static int aurora_init_CD180(struct Aurora_board * bp, int chip) | |
178 | { | |
179 | unsigned long flags; | |
180 | int id; | |
181 | ||
182 | #ifdef AURORA_DEBUG | |
183 | printk("aurora_init_CD180: start %d:%d\n", | |
184 | board_No(bp), chip); | |
185 | #endif | |
186 | save_flags(flags); cli(); | |
187 | sbus_writeb(0, &bp->r[chip]->r[CD180_CAR]); | |
188 | sbus_writeb(0, &bp->r[chip]->r[CD180_GSVR]); | |
189 | ||
190 | /* Wait for CCR ready */ | |
191 | aurora_wait_CCR(bp->r[chip]); | |
192 | ||
193 | /* Reset CD180 chip */ | |
194 | sbus_writeb(CCR_HARDRESET, &bp->r[chip]->r[CD180_CCR]); | |
195 | udelay(1); | |
196 | sti(); | |
197 | id=1000; | |
198 | while((--id) && | |
199 | (sbus_readb(&bp->r[chip]->r[CD180_GSVR])!=0xff))udelay(100); | |
200 | if(!id) { | |
201 | printk(KERN_ERR "aurora%d: Chip %d failed init.\n", | |
202 | board_No(bp), chip); | |
203 | restore_flags(flags); | |
204 | return(-1); | |
205 | } | |
206 | cli(); | |
207 | sbus_writeb((board_No(bp)<<5)|((chip+1)<<3), | |
208 | &bp->r[chip]->r[CD180_GSVR]); /* Set ID for this chip */ | |
209 | sbus_writeb(0x80|bp->ACK_MINT, | |
210 | &bp->r[chip]->r[CD180_MSMR]); /* Prio for modem intr */ | |
211 | sbus_writeb(0x80|bp->ACK_TINT, | |
212 | &bp->r[chip]->r[CD180_TSMR]); /* Prio for transmitter intr */ | |
213 | sbus_writeb(0x80|bp->ACK_RINT, | |
214 | &bp->r[chip]->r[CD180_RSMR]); /* Prio for receiver intr */ | |
215 | /* Setting up prescaler. We need 4 tick per 1 ms */ | |
216 | sbus_writeb((bp->oscfreq/(1000000/AURORA_TPS)) >> 8, | |
217 | &bp->r[chip]->r[CD180_PPRH]); | |
218 | sbus_writeb((bp->oscfreq/(1000000/AURORA_TPS)) & 0xff, | |
219 | &bp->r[chip]->r[CD180_PPRL]); | |
220 | ||
221 | sbus_writeb(SRCR_AUTOPRI|SRCR_GLOBPRI, | |
222 | &bp->r[chip]->r[CD180_SRCR]); | |
223 | ||
224 | id = sbus_readb(&bp->r[chip]->r[CD180_GFRCR]); | |
225 | printk(KERN_INFO "aurora%d: Chip %d id %02x: ", | |
226 | board_No(bp), chip,id); | |
227 | if(sbus_readb(&bp->r[chip]->r[CD180_SRCR]) & 128) { | |
228 | switch (id) { | |
229 | case 0x82:printk("CL-CD1864 rev A\n");break; | |
230 | case 0x83:printk("CL-CD1865 rev A\n");break; | |
231 | case 0x84:printk("CL-CD1865 rev B\n");break; | |
232 | case 0x85:printk("CL-CD1865 rev C\n");break; | |
233 | default:printk("Unknown.\n"); | |
234 | }; | |
235 | } else { | |
236 | switch (id) { | |
237 | case 0x81:printk("CL-CD180 rev B\n");break; | |
238 | case 0x82:printk("CL-CD180 rev C\n");break; | |
239 | default:printk("Unknown.\n"); | |
240 | }; | |
241 | } | |
242 | restore_flags(flags); | |
243 | #ifdef AURORA_DEBUG | |
244 | printk("aurora_init_CD180: end\n"); | |
245 | #endif | |
246 | return 0; | |
247 | } | |
248 | ||
249 | static int valid_irq(unsigned char irq) | |
250 | { | |
251 | int i; | |
252 | for(i=0;i<TYPE_1_IRQS;i++) | |
253 | if (type_1_irq[i]==irq) return 1; | |
254 | return 0; | |
255 | } | |
256 | ||
7d12e780 | 257 | static irqreturn_t aurora_interrupt(int irq, void * dev_id); |
1da177e4 LT |
258 | |
259 | /* Main probing routine, also sets irq. */ | |
260 | static int aurora_probe(void) | |
261 | { | |
262 | struct sbus_bus *sbus; | |
263 | struct sbus_dev *sdev; | |
264 | int grrr; | |
265 | char buf[30]; | |
266 | int bn = 0; | |
267 | struct Aurora_board *bp; | |
268 | ||
269 | for_each_sbus(sbus) { | |
270 | for_each_sbusdev(sdev, sbus) { | |
271 | /* printk("Try: %x %s\n",sdev,sdev->prom_name);*/ | |
272 | if (!strcmp(sdev->prom_name, "sio16")) { | |
273 | #ifdef AURORA_DEBUG | |
274 | printk(KERN_INFO "aurora: sio16 at %p\n",sdev); | |
275 | #endif | |
276 | if((sdev->reg_addrs[0].reg_size!=1) && | |
277 | (sdev->reg_addrs[1].reg_size!=128) && | |
278 | (sdev->reg_addrs[2].reg_size!=128) && | |
279 | (sdev->reg_addrs[3].reg_size!=4)) { | |
280 | printk(KERN_ERR "aurora%d: registers' sizes " | |
281 | "do not match.\n", bn); | |
282 | break; | |
283 | } | |
284 | bp = &aurora_board[bn]; | |
285 | bp->r0 = (struct aurora_reg1 *) | |
286 | sbus_ioremap(&sdev->resource[0], 0, | |
287 | sdev->reg_addrs[0].reg_size, | |
288 | "sio16"); | |
289 | if (bp->r0 == NULL) { | |
290 | printk(KERN_ERR "aurora%d: can't map " | |
291 | "reg_addrs[0]\n", bn); | |
292 | break; | |
293 | } | |
294 | #ifdef AURORA_DEBUG | |
295 | printk("Map reg 0: %p\n", bp->r0); | |
296 | #endif | |
297 | bp->r[0] = (struct aurora_reg128 *) | |
298 | sbus_ioremap(&sdev->resource[1], 0, | |
299 | sdev->reg_addrs[1].reg_size, | |
300 | "sio16"); | |
301 | if (bp->r[0] == NULL) { | |
302 | printk(KERN_ERR "aurora%d: can't map " | |
303 | "reg_addrs[1]\n", bn); | |
304 | break; | |
305 | } | |
306 | #ifdef AURORA_DEBUG | |
307 | printk("Map reg 1: %p\n", bp->r[0]); | |
308 | #endif | |
309 | bp->r[1] = (struct aurora_reg128 *) | |
310 | sbus_ioremap(&sdev->resource[2], 0, | |
311 | sdev->reg_addrs[2].reg_size, | |
312 | "sio16"); | |
313 | if (bp->r[1] == NULL) { | |
314 | printk(KERN_ERR "aurora%d: can't map " | |
315 | "reg_addrs[2]\n", bn); | |
316 | break; | |
317 | } | |
318 | #ifdef AURORA_DEBUG | |
319 | printk("Map reg 2: %p\n", bp->r[1]); | |
320 | #endif | |
321 | bp->r3 = (struct aurora_reg4 *) | |
322 | sbus_ioremap(&sdev->resource[3], 0, | |
323 | sdev->reg_addrs[3].reg_size, | |
324 | "sio16"); | |
325 | if (bp->r3 == NULL) { | |
326 | printk(KERN_ERR "aurora%d: can't map " | |
327 | "reg_addrs[3]\n", bn); | |
328 | break; | |
329 | } | |
330 | #ifdef AURORA_DEBUG | |
331 | printk("Map reg 3: %p\n", bp->r3); | |
332 | #endif | |
333 | /* Variables setup */ | |
334 | bp->flags = 0; | |
335 | #ifdef AURORA_DEBUG | |
336 | grrr=prom_getint(sdev->prom_node,"intr"); | |
337 | printk("intr pri %d\n", grrr); | |
338 | #endif | |
339 | if ((bp->irq=irqs[bn]) && valid_irq(bp->irq) && | |
dace1453 | 340 | !request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED, "sio16", bp)) { |
1da177e4 LT |
341 | free_irq(bp->irq|0x30, bp); |
342 | } else | |
343 | if ((bp->irq=prom_getint(sdev->prom_node, "bintr")) && valid_irq(bp->irq) && | |
dace1453 | 344 | !request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED, "sio16", bp)) { |
1da177e4 LT |
345 | free_irq(bp->irq|0x30, bp); |
346 | } else | |
347 | if ((bp->irq=prom_getint(sdev->prom_node, "intr")) && valid_irq(bp->irq) && | |
dace1453 | 348 | !request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED, "sio16", bp)) { |
1da177e4 LT |
349 | free_irq(bp->irq|0x30, bp); |
350 | } else | |
351 | for(grrr=0;grrr<TYPE_1_IRQS;grrr++) { | |
dace1453 | 352 | if ((bp->irq=type_1_irq[grrr])&&!request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED, "sio16", bp)) { |
1da177e4 LT |
353 | free_irq(bp->irq|0x30, bp); |
354 | break; | |
355 | } else { | |
356 | printk(KERN_ERR "aurora%d: Could not get an irq for this board !!!\n",bn); | |
357 | bp->flags=0xff; | |
358 | } | |
359 | } | |
360 | if(bp->flags==0xff)break; | |
361 | printk(KERN_INFO "aurora%d: irq %d\n",bn,bp->irq&0x0f); | |
362 | buf[0]=0; | |
363 | grrr=prom_getproperty(sdev->prom_node,"dtr_rts",buf,sizeof(buf)); | |
364 | if(!strcmp(buf,"swapped")){ | |
365 | printk(KERN_INFO "aurora%d: Swapped DTR and RTS\n",bn); | |
366 | bp->DTR=MSVR_RTS; | |
367 | bp->RTS=MSVR_DTR; | |
368 | bp->MSVDTR=CD180_MSVRTS; | |
369 | bp->MSVRTS=CD180_MSVDTR; | |
370 | bp->flags|=AURORA_BOARD_DTR_FLOW_OK; | |
371 | }else{ | |
372 | #ifdef AURORA_FORCE_DTR_FLOW | |
373 | printk(KERN_INFO "aurora%d: Forcing swapped DTR-RTS\n",bn); | |
374 | bp->DTR=MSVR_RTS; | |
375 | bp->RTS=MSVR_DTR; | |
376 | bp->MSVDTR=CD180_MSVRTS; | |
377 | bp->MSVRTS=CD180_MSVDTR; | |
378 | bp->flags|=AURORA_BOARD_DTR_FLOW_OK; | |
379 | #else | |
380 | printk(KERN_INFO "aurora%d: Normal DTR and RTS\n",bn); | |
381 | bp->DTR=MSVR_DTR; | |
382 | bp->RTS=MSVR_RTS; | |
383 | bp->MSVDTR=CD180_MSVDTR; | |
384 | bp->MSVRTS=CD180_MSVRTS; | |
385 | #endif | |
386 | } | |
387 | bp->oscfreq=prom_getint(sdev->prom_node,"clk")*100; | |
388 | printk(KERN_INFO "aurora%d: Oscillator: %d Hz\n",bn,bp->oscfreq); | |
389 | grrr=prom_getproperty(sdev->prom_node,"chip",buf,sizeof(buf)); | |
390 | printk(KERN_INFO "aurora%d: Chips: %s\n",bn,buf); | |
391 | grrr=prom_getproperty(sdev->prom_node,"manu",buf,sizeof(buf)); | |
392 | printk(KERN_INFO "aurora%d: Manufacturer: %s\n",bn,buf); | |
393 | grrr=prom_getproperty(sdev->prom_node,"model",buf,sizeof(buf)); | |
394 | printk(KERN_INFO "aurora%d: Model: %s\n",bn,buf); | |
395 | grrr=prom_getproperty(sdev->prom_node,"rev",buf,sizeof(buf)); | |
396 | printk(KERN_INFO "aurora%d: Revision: %s\n",bn,buf); | |
397 | grrr=prom_getproperty(sdev->prom_node,"mode",buf,sizeof(buf)); | |
398 | printk(KERN_INFO "aurora%d: Mode: %s\n",bn,buf); | |
399 | #ifdef MODULE | |
400 | bp->count=0; | |
401 | #endif | |
402 | bp->flags = AURORA_BOARD_PRESENT; | |
403 | /* hardware ack */ | |
404 | bp->ACK_MINT=1; | |
405 | bp->ACK_TINT=2; | |
406 | bp->ACK_RINT=3; | |
407 | bn++; | |
408 | } | |
409 | } | |
410 | } | |
411 | return bn; | |
412 | } | |
413 | ||
414 | static void aurora_release_io_range(struct Aurora_board *bp) | |
415 | { | |
416 | sbus_iounmap((unsigned long)bp->r0, 1); | |
417 | sbus_iounmap((unsigned long)bp->r[0], 128); | |
418 | sbus_iounmap((unsigned long)bp->r[1], 128); | |
419 | sbus_iounmap((unsigned long)bp->r3, 4); | |
420 | } | |
421 | ||
a9b1ef8e | 422 | static inline void aurora_mark_event(struct Aurora_port * port, int event) |
1da177e4 LT |
423 | { |
424 | #ifdef AURORA_DEBUG | |
425 | printk("aurora_mark_event: start\n"); | |
426 | #endif | |
427 | set_bit(event, &port->event); | |
428 | queue_task(&port->tqueue, &tq_aurora); | |
429 | mark_bh(AURORA_BH); | |
430 | #ifdef AURORA_DEBUG | |
431 | printk("aurora_mark_event: end\n"); | |
432 | #endif | |
433 | } | |
434 | ||
435 | static __inline__ struct Aurora_port * aurora_get_port(struct Aurora_board const * bp, | |
436 | int chip, | |
437 | unsigned char const *what) | |
438 | { | |
439 | unsigned char channel; | |
440 | struct Aurora_port * port; | |
441 | ||
442 | channel = ((chip << 3) | | |
443 | ((sbus_readb(&bp->r[chip]->r[CD180_GSCR]) & GSCR_CHAN) >> GSCR_CHAN_OFF)); | |
444 | port = &aurora_port[board_No(bp) * AURORA_NPORT * AURORA_NCD180 + channel]; | |
445 | if (port->flags & ASYNC_INITIALIZED) | |
446 | return port; | |
447 | ||
448 | printk(KERN_DEBUG "aurora%d: %s interrupt from invalid port %d\n", | |
449 | board_No(bp), what, channel); | |
450 | return NULL; | |
451 | } | |
452 | ||
453 | static void aurora_receive_exc(struct Aurora_board const * bp, int chip) | |
454 | { | |
455 | struct Aurora_port *port; | |
456 | struct tty_struct *tty; | |
457 | unsigned char status; | |
458 | unsigned char ch; | |
459 | ||
460 | if (!(port = aurora_get_port(bp, chip, "Receive_x"))) | |
461 | return; | |
462 | ||
463 | tty = port->tty; | |
464 | if (tty->flip.count >= TTY_FLIPBUF_SIZE) { | |
465 | #ifdef AURORA_INTNORM | |
466 | printk("aurora%d: port %d: Working around flip buffer overflow.\n", | |
467 | board_No(bp), port_No(port)); | |
468 | #endif | |
469 | return; | |
470 | } | |
471 | ||
472 | #ifdef AURORA_REPORT_OVERRUN | |
473 | status = sbus_readb(&bp->r[chip]->r[CD180_RCSR]); | |
474 | if (status & RCSR_OE) { | |
475 | port->overrun++; | |
476 | #if 1 | |
477 | printk("aurora%d: port %d: Overrun. Total %ld overruns.\n", | |
478 | board_No(bp), port_No(port), port->overrun); | |
479 | #endif | |
480 | } | |
481 | status &= port->mark_mask; | |
482 | #else | |
483 | status = sbus_readb(&bp->r[chip]->r[CD180_RCSR]) & port->mark_mask; | |
484 | #endif | |
485 | ch = sbus_readb(&bp->r[chip]->r[CD180_RDR]); | |
486 | if (!status) | |
487 | return; | |
488 | ||
489 | if (status & RCSR_TOUT) { | |
490 | /* printk("aurora%d: port %d: Receiver timeout. Hardware problems ?\n", | |
491 | board_No(bp), port_No(port));*/ | |
492 | return; | |
493 | ||
494 | } else if (status & RCSR_BREAK) { | |
495 | printk(KERN_DEBUG "aurora%d: port %d: Handling break...\n", | |
496 | board_No(bp), port_No(port)); | |
497 | *tty->flip.flag_buf_ptr++ = TTY_BREAK; | |
498 | if (port->flags & ASYNC_SAK) | |
499 | do_SAK(tty); | |
500 | ||
501 | } else if (status & RCSR_PE) | |
502 | *tty->flip.flag_buf_ptr++ = TTY_PARITY; | |
503 | ||
504 | else if (status & RCSR_FE) | |
505 | *tty->flip.flag_buf_ptr++ = TTY_FRAME; | |
506 | ||
507 | else if (status & RCSR_OE) | |
508 | *tty->flip.flag_buf_ptr++ = TTY_OVERRUN; | |
509 | ||
510 | else | |
511 | *tty->flip.flag_buf_ptr++ = 0; | |
512 | ||
513 | *tty->flip.char_buf_ptr++ = ch; | |
514 | tty->flip.count++; | |
515 | queue_task(&tty->flip.tqueue, &tq_timer); | |
516 | } | |
517 | ||
518 | static void aurora_receive(struct Aurora_board const * bp, int chip) | |
519 | { | |
520 | struct Aurora_port *port; | |
521 | struct tty_struct *tty; | |
522 | unsigned char count,cnt; | |
523 | ||
524 | if (!(port = aurora_get_port(bp, chip, "Receive"))) | |
525 | return; | |
526 | ||
527 | tty = port->tty; | |
528 | ||
529 | count = sbus_readb(&bp->r[chip]->r[CD180_RDCR]); | |
530 | ||
531 | #ifdef AURORA_REPORT_FIFO | |
532 | port->hits[count > 8 ? 9 : count]++; | |
533 | #endif | |
534 | ||
535 | while (count--) { | |
536 | if (tty->flip.count >= TTY_FLIPBUF_SIZE) { | |
537 | #ifdef AURORA_INTNORM | |
538 | printk("aurora%d: port %d: Working around flip buffer overflow.\n", | |
539 | board_No(bp), port_No(port)); | |
540 | #endif | |
541 | break; | |
542 | } | |
543 | cnt = sbus_readb(&bp->r[chip]->r[CD180_RDR]); | |
544 | *tty->flip.char_buf_ptr++ = cnt; | |
545 | *tty->flip.flag_buf_ptr++ = 0; | |
546 | tty->flip.count++; | |
547 | } | |
548 | queue_task(&tty->flip.tqueue, &tq_timer); | |
549 | } | |
550 | ||
551 | static void aurora_transmit(struct Aurora_board const * bp, int chip) | |
552 | { | |
553 | struct Aurora_port *port; | |
554 | struct tty_struct *tty; | |
555 | unsigned char count; | |
556 | ||
557 | if (!(port = aurora_get_port(bp, chip, "Transmit"))) | |
558 | return; | |
559 | ||
560 | tty = port->tty; | |
561 | ||
562 | if (port->SRER & SRER_TXEMPTY) { | |
563 | /* FIFO drained */ | |
564 | sbus_writeb(port_No(port) & 7, | |
565 | &bp->r[chip]->r[CD180_CAR]); | |
566 | udelay(1); | |
567 | port->SRER &= ~SRER_TXEMPTY; | |
568 | sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]); | |
569 | return; | |
570 | } | |
571 | ||
572 | if ((port->xmit_cnt <= 0 && !port->break_length) | |
573 | || tty->stopped || tty->hw_stopped) { | |
574 | sbus_writeb(port_No(port) & 7, | |
575 | &bp->r[chip]->r[CD180_CAR]); | |
576 | udelay(1); | |
577 | port->SRER &= ~SRER_TXRDY; | |
578 | sbus_writeb(port->SRER, | |
579 | &bp->r[chip]->r[CD180_SRER]); | |
580 | return; | |
581 | } | |
582 | ||
583 | if (port->break_length) { | |
584 | if (port->break_length > 0) { | |
585 | if (port->COR2 & COR2_ETC) { | |
586 | sbus_writeb(CD180_C_ESC, | |
587 | &bp->r[chip]->r[CD180_TDR]); | |
588 | sbus_writeb(CD180_C_SBRK, | |
589 | &bp->r[chip]->r[CD180_TDR]); | |
590 | port->COR2 &= ~COR2_ETC; | |
591 | } | |
4b40033e | 592 | count = min(port->break_length, 0xff); |
1da177e4 LT |
593 | sbus_writeb(CD180_C_ESC, |
594 | &bp->r[chip]->r[CD180_TDR]); | |
595 | sbus_writeb(CD180_C_DELAY, | |
596 | &bp->r[chip]->r[CD180_TDR]); | |
597 | sbus_writeb(count, | |
598 | &bp->r[chip]->r[CD180_TDR]); | |
599 | if (!(port->break_length -= count)) | |
600 | port->break_length--; | |
601 | } else { | |
602 | sbus_writeb(CD180_C_ESC, | |
603 | &bp->r[chip]->r[CD180_TDR]); | |
604 | sbus_writeb(CD180_C_EBRK, | |
605 | &bp->r[chip]->r[CD180_TDR]); | |
606 | sbus_writeb(port->COR2, | |
607 | &bp->r[chip]->r[CD180_COR2]); | |
608 | aurora_wait_CCR(bp->r[chip]); | |
609 | sbus_writeb(CCR_CORCHG2, | |
610 | &bp->r[chip]->r[CD180_CCR]); | |
611 | port->break_length = 0; | |
612 | } | |
613 | return; | |
614 | } | |
615 | ||
616 | count = CD180_NFIFO; | |
617 | do { | |
618 | u8 byte = port->xmit_buf[port->xmit_tail++]; | |
619 | ||
620 | sbus_writeb(byte, &bp->r[chip]->r[CD180_TDR]); | |
621 | port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE-1); | |
622 | if (--port->xmit_cnt <= 0) | |
623 | break; | |
624 | } while (--count > 0); | |
625 | ||
626 | if (port->xmit_cnt <= 0) { | |
627 | sbus_writeb(port_No(port) & 7, | |
628 | &bp->r[chip]->r[CD180_CAR]); | |
629 | udelay(1); | |
630 | port->SRER &= ~SRER_TXRDY; | |
631 | sbus_writeb(port->SRER, | |
632 | &bp->r[chip]->r[CD180_SRER]); | |
633 | } | |
634 | if (port->xmit_cnt <= port->wakeup_chars) | |
635 | aurora_mark_event(port, RS_EVENT_WRITE_WAKEUP); | |
636 | } | |
637 | ||
638 | static void aurora_check_modem(struct Aurora_board const * bp, int chip) | |
639 | { | |
640 | struct Aurora_port *port; | |
641 | struct tty_struct *tty; | |
642 | unsigned char mcr; | |
643 | ||
644 | if (!(port = aurora_get_port(bp, chip, "Modem"))) | |
645 | return; | |
646 | ||
647 | tty = port->tty; | |
648 | ||
649 | mcr = sbus_readb(&bp->r[chip]->r[CD180_MCR]); | |
650 | if (mcr & MCR_CDCHG) { | |
651 | if (sbus_readb(&bp->r[chip]->r[CD180_MSVR]) & MSVR_CD) | |
652 | wake_up_interruptible(&port->open_wait); | |
653 | else | |
654 | schedule_task(&port->tqueue_hangup); | |
655 | } | |
656 | ||
657 | /* We don't have such things yet. My aurora board has DTR and RTS swapped, but that doesn't count in this driver. Let's hope | |
658 | * Aurora didn't made any boards with CTS or DSR broken... | |
659 | */ | |
660 | /* #ifdef AURORA_BRAIN_DAMAGED_CTS | |
661 | if (mcr & MCR_CTSCHG) { | |
662 | if (aurora_in(bp, CD180_MSVR) & MSVR_CTS) { | |
663 | tty->hw_stopped = 0; | |
664 | port->SRER |= SRER_TXRDY; | |
665 | if (port->xmit_cnt <= port->wakeup_chars) | |
666 | aurora_mark_event(port, RS_EVENT_WRITE_WAKEUP); | |
667 | } else { | |
668 | tty->hw_stopped = 1; | |
669 | port->SRER &= ~SRER_TXRDY; | |
670 | } | |
671 | sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]); | |
672 | } | |
673 | if (mcr & MCR_DSRCHG) { | |
674 | if (aurora_in(bp, CD180_MSVR) & MSVR_DSR) { | |
675 | tty->hw_stopped = 0; | |
676 | port->SRER |= SRER_TXRDY; | |
677 | if (port->xmit_cnt <= port->wakeup_chars) | |
678 | aurora_mark_event(port, RS_EVENT_WRITE_WAKEUP); | |
679 | } else { | |
680 | tty->hw_stopped = 1; | |
681 | port->SRER &= ~SRER_TXRDY; | |
682 | } | |
683 | sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]); | |
684 | } | |
685 | #endif AURORA_BRAIN_DAMAGED_CTS */ | |
686 | ||
687 | /* Clear change bits */ | |
688 | sbus_writeb(0, &bp->r[chip]->r[CD180_MCR]); | |
689 | } | |
690 | ||
691 | /* The main interrupt processing routine */ | |
7d12e780 | 692 | static irqreturn_t aurora_interrupt(int irq, void * dev_id) |
1da177e4 LT |
693 | { |
694 | unsigned char status; | |
695 | unsigned char ack,chip/*,chip_id*/; | |
696 | struct Aurora_board * bp = (struct Aurora_board *) dev_id; | |
697 | unsigned long loop = 0; | |
698 | ||
699 | #ifdef AURORA_INT_DEBUG | |
700 | printk("IRQ%d %d\n",irq,++irqhit); | |
701 | #ifdef AURORA_FLOODPRO | |
702 | if (irqhit>=AURORA_FLOODPRO) | |
703 | sbus_writeb(8, &bp->r0->r); | |
704 | #endif | |
705 | #endif | |
706 | ||
707 | /* old bp = IRQ_to_board[irq&0x0f];*/ | |
708 | ||
709 | if (!bp || !(bp->flags & AURORA_BOARD_ACTIVE)) | |
710 | return IRQ_NONE; | |
711 | ||
712 | /* The while() below takes care of this. | |
713 | status = sbus_readb(&bp->r[0]->r[CD180_SRSR]); | |
714 | #ifdef AURORA_INT_DEBUG | |
715 | printk("mumu: %02x\n", status); | |
716 | #endif | |
717 | if (!(status&SRSR_ANYINT)) | |
718 | return IRQ_NONE; * Nobody has anything to say, so exit * | |
719 | */ | |
720 | while ((loop++ < 48) && | |
721 | (status = sbus_readb(&bp->r[0]->r[CD180_SRSR]) & SRSR_ANYINT)){ | |
722 | #ifdef AURORA_INT_DEBUG | |
723 | printk("SRSR: %02x\n", status); | |
724 | #endif | |
725 | if (status & SRSR_REXT) { | |
726 | ack = sbus_readb(&bp->r3->r[bp->ACK_RINT]); | |
727 | #ifdef AURORA_INT_DEBUG | |
728 | printk("R-ACK %02x\n", ack); | |
729 | #endif | |
730 | if ((ack >> 5) == board_No(bp)) { | |
731 | if ((chip=((ack>>3)&3)-1) < AURORA_NCD180) { | |
732 | if ((ack&GSVR_ITMASK)==GSVR_IT_RGD) { | |
733 | aurora_receive(bp,chip); | |
734 | sbus_writeb(0, | |
735 | &bp->r[chip]->r[CD180_EOSRR]); | |
736 | } else if ((ack & GSVR_ITMASK) == GSVR_IT_REXC) { | |
737 | aurora_receive_exc(bp,chip); | |
738 | sbus_writeb(0, | |
739 | &bp->r[chip]->r[CD180_EOSRR]); | |
740 | } | |
741 | } | |
742 | } | |
743 | } else if (status & SRSR_TEXT) { | |
744 | ack = sbus_readb(&bp->r3->r[bp->ACK_TINT]); | |
745 | #ifdef AURORA_INT_DEBUG | |
746 | printk("T-ACK %02x\n", ack); | |
747 | #endif | |
748 | if ((ack >> 5) == board_No(bp)) { | |
749 | if ((chip=((ack>>3)&3)-1) < AURORA_NCD180) { | |
750 | if ((ack&GSVR_ITMASK)==GSVR_IT_TX) { | |
751 | aurora_transmit(bp,chip); | |
752 | sbus_writeb(0, | |
753 | &bp->r[chip]->r[CD180_EOSRR]); | |
754 | } | |
755 | } | |
756 | } | |
757 | } else if (status & SRSR_MEXT) { | |
758 | ack = sbus_readb(&bp->r3->r[bp->ACK_MINT]); | |
759 | #ifdef AURORA_INT_DEBUG | |
760 | printk("M-ACK %02x\n", ack); | |
761 | #endif | |
762 | if ((ack >> 5) == board_No(bp)) { | |
763 | if ((chip = ((ack>>3)&3)-1) < AURORA_NCD180) { | |
764 | if ((ack&GSVR_ITMASK)==GSVR_IT_MDM) { | |
765 | aurora_check_modem(bp,chip); | |
766 | sbus_writeb(0, | |
767 | &bp->r[chip]->r[CD180_EOSRR]); | |
768 | } | |
769 | } | |
770 | } | |
771 | } | |
772 | } | |
773 | /* I guess this faster code can be used with CD1865, using AUROPRI and GLOBPRI. */ | |
774 | #if 0 | |
775 | while ((loop++ < 48)&&(status=bp->r[0]->r[CD180_SRSR]&SRSR_ANYINT)){ | |
776 | #ifdef AURORA_INT_DEBUG | |
777 | printk("SRSR: %02x\n",status); | |
778 | #endif | |
779 | ack = sbus_readb(&bp->r3->r[0]); | |
780 | #ifdef AURORA_INT_DEBUG | |
781 | printk("ACK: %02x\n",ack); | |
782 | #endif | |
783 | if ((ack>>5)==board_No(bp)) { | |
784 | if ((chip=((ack>>3)&3)-1) < AURORA_NCD180) { | |
785 | ack&=GSVR_ITMASK; | |
786 | if (ack==GSVR_IT_RGD) { | |
787 | aurora_receive(bp,chip); | |
788 | sbus_writeb(0, | |
789 | &bp->r[chip]->r[CD180_EOSRR]); | |
790 | } else if (ack==GSVR_IT_REXC) { | |
791 | aurora_receive_exc(bp,chip); | |
792 | sbus_writeb(0, | |
793 | &bp->r[chip]->r[CD180_EOSRR]); | |
794 | } else if (ack==GSVR_IT_TX) { | |
795 | aurora_transmit(bp,chip); | |
796 | sbus_writeb(0, | |
797 | &bp->r[chip]->r[CD180_EOSRR]); | |
798 | } else if (ack==GSVR_IT_MDM) { | |
799 | aurora_check_modem(bp,chip); | |
800 | sbus_writeb(0, | |
801 | &bp->r[chip]->r[CD180_EOSRR]); | |
802 | } | |
803 | } | |
804 | } | |
805 | } | |
806 | #endif | |
807 | ||
808 | /* This is the old handling routine, used in riscom8 for only one CD180. I keep it here for reference. */ | |
809 | #if 0 | |
810 | for(chip=0;chip<AURORA_NCD180;chip++){ | |
811 | chip_id=(board_No(bp)<<5)|((chip+1)<<3); | |
812 | loop=0; | |
813 | while ((loop++ < 1) && | |
814 | ((status = sbus_readb(&bp->r[chip]->r[CD180_SRSR])) & | |
815 | (SRSR_TEXT | SRSR_MEXT | SRSR_REXT))) { | |
816 | ||
817 | if (status & SRSR_REXT) { | |
818 | ack = sbus_readb(&bp->r3->r[bp->ACK_RINT]); | |
819 | if (ack == (chip_id | GSVR_IT_RGD)) { | |
820 | #ifdef AURORA_INTMSG | |
821 | printk("RX ACK\n"); | |
822 | #endif | |
823 | aurora_receive(bp,chip); | |
824 | } else if (ack == (chip_id | GSVR_IT_REXC)) { | |
825 | #ifdef AURORA_INTMSG | |
826 | printk("RXC ACK\n"); | |
827 | #endif | |
828 | aurora_receive_exc(bp,chip); | |
829 | } else { | |
830 | #ifdef AURORA_INTNORM | |
831 | printk("aurora%d-%d: Bad receive ack 0x%02x.\n", | |
832 | board_No(bp), chip, ack); | |
833 | #endif | |
834 | } | |
835 | } else if (status & SRSR_TEXT) { | |
836 | ack = sbus_readb(&bp->r3->r[bp->ACK_TINT]); | |
837 | if (ack == (chip_id | GSVR_IT_TX)){ | |
838 | #ifdef AURORA_INTMSG | |
839 | printk("TX ACK\n"); | |
840 | #endif | |
841 | aurora_transmit(bp,chip); | |
842 | } else { | |
843 | #ifdef AURORA_INTNORM | |
844 | printk("aurora%d-%d: Bad transmit ack 0x%02x.\n", | |
845 | board_No(bp), chip, ack); | |
846 | #endif | |
847 | } | |
848 | } else if (status & SRSR_MEXT) { | |
849 | ack = sbus_readb(&bp->r3->r[bp->ACK_MINT]); | |
850 | if (ack == (chip_id | GSVR_IT_MDM)){ | |
851 | #ifdef AURORA_INTMSG | |
852 | printk("MDM ACK\n"); | |
853 | #endif | |
854 | aurora_check_modem(bp,chip); | |
855 | } else { | |
856 | #ifdef AURORA_INTNORM | |
857 | printk("aurora%d-%d: Bad modem ack 0x%02x.\n", | |
858 | board_No(bp), chip, ack); | |
859 | #endif | |
860 | } | |
861 | } | |
862 | sbus_writeb(0, &bp->r[chip]->r[CD180_EOSRR]); | |
863 | } | |
864 | } | |
865 | #endif | |
866 | ||
867 | return IRQ_HANDLED; | |
868 | } | |
869 | ||
870 | #ifdef AURORA_INT_DEBUG | |
871 | static void aurora_timer (unsigned long ignored); | |
872 | ||
8d06afab | 873 | static DEFINE_TIMER(aurora_poll_timer, aurora_timer, 0, 0); |
1da177e4 LT |
874 | |
875 | static void | |
876 | aurora_timer (unsigned long ignored) | |
877 | { | |
878 | unsigned long flags; | |
879 | int i; | |
880 | ||
881 | save_flags(flags); cli(); | |
882 | ||
883 | printk("SRSR: %02x,%02x - ", | |
884 | sbus_readb(&aurora_board[0].r[0]->r[CD180_SRSR]), | |
885 | sbus_readb(&aurora_board[0].r[1]->r[CD180_SRSR])); | |
886 | for (i = 0; i < 4; i++) { | |
887 | udelay(1); | |
888 | printk("%02x ", | |
889 | sbus_readb(&aurora_board[0].r3->r[i])); | |
890 | } | |
891 | printk("\n"); | |
892 | ||
893 | aurora_poll_timer.expires = jiffies + 300; | |
894 | add_timer (&aurora_poll_timer); | |
895 | ||
896 | restore_flags(flags); | |
897 | } | |
898 | #endif | |
899 | ||
900 | /* | |
901 | * Routines for open & close processing. | |
902 | */ | |
903 | ||
904 | /* Called with disabled interrupts */ | |
905 | static int aurora_setup_board(struct Aurora_board * bp) | |
906 | { | |
907 | int error; | |
908 | ||
909 | #ifdef AURORA_ALLIRQ | |
910 | int i; | |
911 | for (i = 0; i < AURORA_ALLIRQ; i++) { | |
dace1453 | 912 | error = request_irq(allirq[i]|0x30, aurora_interrupt, IRQF_SHARED, |
1da177e4 LT |
913 | "sio16", bp); |
914 | if (error) | |
915 | printk(KERN_ERR "IRQ%d request error %d\n", | |
916 | allirq[i], error); | |
917 | } | |
918 | #else | |
dace1453 | 919 | error = request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED, |
1da177e4 LT |
920 | "sio16", bp); |
921 | if (error) { | |
922 | printk(KERN_ERR "IRQ request error %d\n", error); | |
923 | return error; | |
924 | } | |
925 | #endif | |
926 | /* Board reset */ | |
927 | sbus_writeb(0, &bp->r0->r); | |
928 | udelay(1); | |
929 | if (bp->flags & AURORA_BOARD_TYPE_2) { | |
930 | /* unknown yet */ | |
931 | } else { | |
932 | sbus_writeb((AURORA_CFG_ENABLE_IO | AURORA_CFG_ENABLE_IRQ | | |
933 | (((bp->irq)&0x0f)>>2)), | |
934 | &bp->r0->r); | |
935 | } | |
936 | udelay(10000); | |
937 | ||
938 | if (aurora_init_CD180(bp,0))error=1;error=0; | |
939 | if (aurora_init_CD180(bp,1))error++; | |
940 | if (error == AURORA_NCD180) { | |
941 | printk(KERN_ERR "Both chips failed initialisation.\n"); | |
942 | return -EIO; | |
943 | } | |
944 | ||
945 | #ifdef AURORA_INT_DEBUG | |
946 | aurora_poll_timer.expires= jiffies + 1; | |
947 | add_timer(&aurora_poll_timer); | |
948 | #endif | |
949 | #ifdef AURORA_DEBUG | |
950 | printk("aurora_setup_board: end\n"); | |
951 | #endif | |
952 | return 0; | |
953 | } | |
954 | ||
955 | /* Called with disabled interrupts */ | |
956 | static void aurora_shutdown_board(struct Aurora_board *bp) | |
957 | { | |
958 | int i; | |
959 | ||
960 | #ifdef AURORA_DEBUG | |
961 | printk("aurora_shutdown_board: start\n"); | |
962 | #endif | |
963 | ||
964 | #ifdef AURORA_INT_DEBUG | |
965 | del_timer(&aurora_poll_timer); | |
966 | #endif | |
967 | ||
968 | #ifdef AURORA_ALLIRQ | |
969 | for(i=0;i<AURORA_ALLIRQ;i++){ | |
970 | free_irq(allirq[i]|0x30, bp); | |
971 | /* IRQ_to_board[allirq[i]&0xf] = NULL;*/ | |
972 | } | |
973 | #else | |
974 | free_irq(bp->irq|0x30, bp); | |
975 | /* IRQ_to_board[bp->irq&0xf] = NULL;*/ | |
976 | #endif | |
977 | /* Drop all DTR's */ | |
978 | for(i=0;i<16;i++){ | |
979 | sbus_writeb(i & 7, &bp->r[i>>3]->r[CD180_CAR]); | |
980 | udelay(1); | |
981 | sbus_writeb(0, &bp->r[i>>3]->r[CD180_MSVR]); | |
982 | udelay(1); | |
983 | } | |
984 | /* Board shutdown */ | |
985 | sbus_writeb(0, &bp->r0->r); | |
986 | ||
987 | #ifdef AURORA_DEBUG | |
988 | printk("aurora_shutdown_board: end\n"); | |
989 | #endif | |
990 | } | |
991 | ||
992 | /* Setting up port characteristics. | |
993 | * Must be called with disabled interrupts | |
994 | */ | |
995 | static void aurora_change_speed(struct Aurora_board *bp, struct Aurora_port *port) | |
996 | { | |
997 | struct tty_struct *tty; | |
998 | unsigned long baud; | |
999 | long tmp; | |
1000 | unsigned char cor1 = 0, cor3 = 0; | |
1001 | unsigned char mcor1 = 0, mcor2 = 0,chip; | |
1002 | ||
1003 | #ifdef AURORA_DEBUG | |
1004 | printk("aurora_change_speed: start\n"); | |
1005 | #endif | |
1006 | if (!(tty = port->tty) || !tty->termios) | |
1007 | return; | |
1008 | ||
1009 | chip = AURORA_CD180(port_No(port)); | |
1010 | ||
1011 | port->SRER = 0; | |
1012 | port->COR2 = 0; | |
1013 | port->MSVR = MSVR_RTS|MSVR_DTR; | |
1014 | ||
1015 | baud = tty_get_baud_rate(tty); | |
1016 | ||
1017 | /* Select port on the board */ | |
1018 | sbus_writeb(port_No(port) & 7, | |
1019 | &bp->r[chip]->r[CD180_CAR]); | |
1020 | udelay(1); | |
1021 | ||
1022 | if (!baud) { | |
1023 | /* Drop DTR & exit */ | |
1024 | port->MSVR &= ~(bp->DTR|bp->RTS); | |
1025 | sbus_writeb(port->MSVR, | |
1026 | &bp->r[chip]->r[CD180_MSVR]); | |
1027 | return; | |
1028 | } else { | |
1029 | /* Set DTR on */ | |
1030 | port->MSVR |= bp->DTR; | |
1031 | sbus_writeb(port->MSVR, | |
1032 | &bp->r[chip]->r[CD180_MSVR]); | |
1033 | } | |
1034 | ||
1035 | /* Now we must calculate some speed dependent things. */ | |
1036 | ||
1037 | /* Set baud rate for port. */ | |
1038 | tmp = (((bp->oscfreq + baud/2) / baud + | |
1039 | CD180_TPC/2) / CD180_TPC); | |
1040 | ||
1041 | /* tmp = (bp->oscfreq/7)/baud; | |
1042 | if((tmp%10)>4)tmp=tmp/10+1;else tmp=tmp/10;*/ | |
1043 | /* printk("Prescaler period: %d\n",tmp);*/ | |
1044 | ||
1045 | sbus_writeb((tmp >> 8) & 0xff, | |
1046 | &bp->r[chip]->r[CD180_RBPRH]); | |
1047 | sbus_writeb((tmp >> 8) & 0xff, | |
1048 | &bp->r[chip]->r[CD180_TBPRH]); | |
1049 | sbus_writeb(tmp & 0xff, &bp->r[chip]->r[CD180_RBPRL]); | |
1050 | sbus_writeb(tmp & 0xff, &bp->r[chip]->r[CD180_TBPRL]); | |
1051 | ||
1052 | baud = (baud + 5) / 10; /* Estimated CPS */ | |
1053 | ||
1054 | /* Two timer ticks seems enough to wakeup something like SLIP driver */ | |
1055 | tmp = ((baud + HZ/2) / HZ) * 2 - CD180_NFIFO; | |
1056 | port->wakeup_chars = (tmp < 0) ? 0 : ((tmp >= SERIAL_XMIT_SIZE) ? | |
1057 | SERIAL_XMIT_SIZE - 1 : tmp); | |
1058 | ||
1059 | /* Receiver timeout will be transmission time for 1.5 chars */ | |
1060 | tmp = (AURORA_TPS + AURORA_TPS/2 + baud/2) / baud; | |
1061 | tmp = (tmp > 0xff) ? 0xff : tmp; | |
1062 | sbus_writeb(tmp, &bp->r[chip]->r[CD180_RTPR]); | |
1063 | ||
1064 | switch (C_CSIZE(tty)) { | |
1065 | case CS5: | |
1066 | cor1 |= COR1_5BITS; | |
1067 | break; | |
1068 | case CS6: | |
1069 | cor1 |= COR1_6BITS; | |
1070 | break; | |
1071 | case CS7: | |
1072 | cor1 |= COR1_7BITS; | |
1073 | break; | |
1074 | case CS8: | |
1075 | cor1 |= COR1_8BITS; | |
1076 | break; | |
1077 | } | |
1078 | ||
1079 | if (C_CSTOPB(tty)) | |
1080 | cor1 |= COR1_2SB; | |
1081 | ||
1082 | cor1 |= COR1_IGNORE; | |
1083 | if (C_PARENB(tty)) { | |
1084 | cor1 |= COR1_NORMPAR; | |
1085 | if (C_PARODD(tty)) | |
1086 | cor1 |= COR1_ODDP; | |
1087 | if (I_INPCK(tty)) | |
1088 | cor1 &= ~COR1_IGNORE; | |
1089 | } | |
1090 | /* Set marking of some errors */ | |
1091 | port->mark_mask = RCSR_OE | RCSR_TOUT; | |
1092 | if (I_INPCK(tty)) | |
1093 | port->mark_mask |= RCSR_FE | RCSR_PE; | |
1094 | if (I_BRKINT(tty) || I_PARMRK(tty)) | |
1095 | port->mark_mask |= RCSR_BREAK; | |
1096 | if (I_IGNPAR(tty)) | |
1097 | port->mark_mask &= ~(RCSR_FE | RCSR_PE); | |
1098 | if (I_IGNBRK(tty)) { | |
1099 | port->mark_mask &= ~RCSR_BREAK; | |
1100 | if (I_IGNPAR(tty)) | |
1101 | /* Real raw mode. Ignore all */ | |
1102 | port->mark_mask &= ~RCSR_OE; | |
1103 | } | |
1104 | /* Enable Hardware Flow Control */ | |
1105 | if (C_CRTSCTS(tty)) { | |
1106 | /*#ifdef AURORA_BRAIN_DAMAGED_CTS | |
1107 | port->SRER |= SRER_DSR | SRER_CTS; | |
1108 | mcor1 |= MCOR1_DSRZD | MCOR1_CTSZD; | |
1109 | mcor2 |= MCOR2_DSROD | MCOR2_CTSOD; | |
1110 | tty->hw_stopped = !(aurora_in(bp, CD180_MSVR) & (MSVR_CTS|MSVR_DSR)); | |
1111 | #else*/ | |
1112 | port->COR2 |= COR2_CTSAE; | |
1113 | /*#endif*/ | |
1114 | if (bp->flags&AURORA_BOARD_DTR_FLOW_OK) { | |
1115 | mcor1 |= AURORA_RXTH; | |
1116 | } | |
1117 | } | |
1118 | /* Enable Software Flow Control. FIXME: I'm not sure about this */ | |
1119 | /* Some people reported that it works, but I still doubt */ | |
1120 | if (I_IXON(tty)) { | |
1121 | port->COR2 |= COR2_TXIBE; | |
1122 | cor3 |= (COR3_FCT | COR3_SCDE); | |
1123 | if (I_IXANY(tty)) | |
1124 | port->COR2 |= COR2_IXM; | |
1125 | sbus_writeb(START_CHAR(tty), | |
1126 | &bp->r[chip]->r[CD180_SCHR1]); | |
1127 | sbus_writeb(STOP_CHAR(tty), | |
1128 | &bp->r[chip]->r[CD180_SCHR2]); | |
1129 | sbus_writeb(START_CHAR(tty), | |
1130 | &bp->r[chip]->r[CD180_SCHR3]); | |
1131 | sbus_writeb(STOP_CHAR(tty), | |
1132 | &bp->r[chip]->r[CD180_SCHR4]); | |
1133 | } | |
1134 | if (!C_CLOCAL(tty)) { | |
1135 | /* Enable CD check */ | |
1136 | port->SRER |= SRER_CD; | |
1137 | mcor1 |= MCOR1_CDZD; | |
1138 | mcor2 |= MCOR2_CDOD; | |
1139 | } | |
1140 | ||
1141 | if (C_CREAD(tty)) | |
1142 | /* Enable receiver */ | |
1143 | port->SRER |= SRER_RXD; | |
1144 | ||
1145 | /* Set input FIFO size (1-8 bytes) */ | |
1146 | cor3 |= AURORA_RXFIFO; | |
1147 | /* Setting up CD180 channel registers */ | |
1148 | sbus_writeb(cor1, &bp->r[chip]->r[CD180_COR1]); | |
1149 | sbus_writeb(port->COR2, &bp->r[chip]->r[CD180_COR2]); | |
1150 | sbus_writeb(cor3, &bp->r[chip]->r[CD180_COR3]); | |
1151 | /* Make CD180 know about registers change */ | |
1152 | aurora_wait_CCR(bp->r[chip]); | |
1153 | sbus_writeb(CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3, | |
1154 | &bp->r[chip]->r[CD180_CCR]); | |
1155 | /* Setting up modem option registers */ | |
1156 | sbus_writeb(mcor1, &bp->r[chip]->r[CD180_MCOR1]); | |
1157 | sbus_writeb(mcor2, &bp->r[chip]->r[CD180_MCOR2]); | |
1158 | /* Enable CD180 transmitter & receiver */ | |
1159 | aurora_wait_CCR(bp->r[chip]); | |
1160 | sbus_writeb(CCR_TXEN | CCR_RXEN, &bp->r[chip]->r[CD180_CCR]); | |
1161 | /* Enable interrupts */ | |
1162 | sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]); | |
1163 | /* And finally set RTS on */ | |
1164 | sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]); | |
1165 | #ifdef AURORA_DEBUG | |
1166 | printk("aurora_change_speed: end\n"); | |
1167 | #endif | |
1168 | } | |
1169 | ||
1170 | /* Must be called with interrupts enabled */ | |
1171 | static int aurora_setup_port(struct Aurora_board *bp, struct Aurora_port *port) | |
1172 | { | |
1173 | unsigned long flags; | |
1174 | ||
1175 | #ifdef AURORA_DEBUG | |
1176 | printk("aurora_setup_port: start %d\n",port_No(port)); | |
1177 | #endif | |
1178 | if (port->flags & ASYNC_INITIALIZED) | |
1179 | return 0; | |
1180 | ||
1181 | if (!port->xmit_buf) { | |
1182 | /* We may sleep in get_zeroed_page() */ | |
1183 | unsigned long tmp; | |
1184 | ||
1185 | if (!(tmp = get_zeroed_page(GFP_KERNEL))) | |
1186 | return -ENOMEM; | |
1187 | ||
1188 | if (port->xmit_buf) { | |
1189 | free_page(tmp); | |
1190 | return -ERESTARTSYS; | |
1191 | } | |
1192 | port->xmit_buf = (unsigned char *) tmp; | |
1193 | } | |
1194 | ||
1195 | save_flags(flags); cli(); | |
1196 | ||
1197 | if (port->tty) | |
1198 | clear_bit(TTY_IO_ERROR, &port->tty->flags); | |
1199 | ||
1200 | #ifdef MODULE | |
1201 | if ((port->count == 1) && ((++bp->count) == 1)) | |
1202 | bp->flags |= AURORA_BOARD_ACTIVE; | |
1203 | #endif | |
1204 | ||
1205 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; | |
1206 | aurora_change_speed(bp, port); | |
1207 | port->flags |= ASYNC_INITIALIZED; | |
1208 | ||
1209 | restore_flags(flags); | |
1210 | #ifdef AURORA_DEBUG | |
1211 | printk("aurora_setup_port: end\n"); | |
1212 | #endif | |
1213 | return 0; | |
1214 | } | |
1215 | ||
1216 | /* Must be called with interrupts disabled */ | |
1217 | static void aurora_shutdown_port(struct Aurora_board *bp, struct Aurora_port *port) | |
1218 | { | |
1219 | struct tty_struct *tty; | |
1220 | unsigned char chip; | |
1221 | ||
1222 | #ifdef AURORA_DEBUG | |
1223 | printk("aurora_shutdown_port: start\n"); | |
1224 | #endif | |
1225 | if (!(port->flags & ASYNC_INITIALIZED)) | |
1226 | return; | |
1227 | ||
1228 | chip = AURORA_CD180(port_No(port)); | |
1229 | ||
1230 | #ifdef AURORA_REPORT_OVERRUN | |
1231 | printk("aurora%d: port %d: Total %ld overruns were detected.\n", | |
1232 | board_No(bp), port_No(port), port->overrun); | |
1233 | #endif | |
1234 | #ifdef AURORA_REPORT_FIFO | |
1235 | { | |
1236 | int i; | |
1237 | ||
1238 | printk("aurora%d: port %d: FIFO hits [ ", | |
1239 | board_No(bp), port_No(port)); | |
1240 | for (i = 0; i < 10; i++) { | |
1241 | printk("%ld ", port->hits[i]); | |
1242 | } | |
1243 | printk("].\n"); | |
1244 | } | |
1245 | #endif | |
1246 | if (port->xmit_buf) { | |
1247 | free_page((unsigned long) port->xmit_buf); | |
1248 | port->xmit_buf = NULL; | |
1249 | } | |
1250 | ||
1251 | if (!(tty = port->tty) || C_HUPCL(tty)) { | |
1252 | /* Drop DTR */ | |
1253 | port->MSVR &= ~(bp->DTR|bp->RTS); | |
1254 | sbus_writeb(port->MSVR, | |
1255 | &bp->r[chip]->r[CD180_MSVR]); | |
1256 | } | |
1257 | ||
1258 | /* Select port */ | |
1259 | sbus_writeb(port_No(port) & 7, | |
1260 | &bp->r[chip]->r[CD180_CAR]); | |
1261 | udelay(1); | |
1262 | ||
1263 | /* Reset port */ | |
1264 | aurora_wait_CCR(bp->r[chip]); | |
1265 | sbus_writeb(CCR_SOFTRESET, &bp->r[chip]->r[CD180_CCR]); | |
1266 | ||
1267 | /* Disable all interrupts from this port */ | |
1268 | port->SRER = 0; | |
1269 | sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]); | |
1270 | ||
1271 | if (tty) | |
1272 | set_bit(TTY_IO_ERROR, &tty->flags); | |
1273 | port->flags &= ~ASYNC_INITIALIZED; | |
1274 | ||
1275 | #ifdef MODULE | |
1276 | if (--bp->count < 0) { | |
1277 | printk(KERN_DEBUG "aurora%d: aurora_shutdown_port: " | |
1278 | "bad board count: %d\n", | |
1279 | board_No(bp), bp->count); | |
1280 | bp->count = 0; | |
1281 | } | |
1282 | ||
1283 | if (!bp->count) | |
1284 | bp->flags &= ~AURORA_BOARD_ACTIVE; | |
1285 | #endif | |
1286 | ||
1287 | #ifdef AURORA_DEBUG | |
1288 | printk("aurora_shutdown_port: end\n"); | |
1289 | #endif | |
1290 | } | |
1291 | ||
1292 | ||
1293 | static int block_til_ready(struct tty_struct *tty, struct file * filp, | |
1294 | struct Aurora_port *port) | |
1295 | { | |
1296 | DECLARE_WAITQUEUE(wait, current); | |
1297 | struct Aurora_board *bp = port_Board(port); | |
1298 | int retval; | |
1299 | int do_clocal = 0; | |
1300 | int CD; | |
1301 | unsigned char chip; | |
1302 | ||
1303 | #ifdef AURORA_DEBUG | |
1304 | printk("block_til_ready: start\n"); | |
1305 | #endif | |
1306 | chip = AURORA_CD180(port_No(port)); | |
1307 | ||
1308 | /* If the device is in the middle of being closed, then block | |
1309 | * until it's done, and then try again. | |
1310 | */ | |
1311 | if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) { | |
1312 | interruptible_sleep_on(&port->close_wait); | |
1313 | if (port->flags & ASYNC_HUP_NOTIFY) | |
1314 | return -EAGAIN; | |
1315 | else | |
1316 | return -ERESTARTSYS; | |
1317 | } | |
1318 | ||
1319 | /* If non-blocking mode is set, or the port is not enabled, | |
1320 | * then make the check up front and then exit. | |
1321 | */ | |
1322 | if ((filp->f_flags & O_NONBLOCK) || | |
1323 | (tty->flags & (1 << TTY_IO_ERROR))) { | |
1324 | port->flags |= ASYNC_NORMAL_ACTIVE; | |
1325 | return 0; | |
1326 | } | |
1327 | ||
1328 | if (C_CLOCAL(tty)) | |
1329 | do_clocal = 1; | |
1330 | ||
1331 | /* Block waiting for the carrier detect and the line to become | |
1332 | * free (i.e., not in use by the callout). While we are in | |
1333 | * this loop, info->count is dropped by one, so that | |
1334 | * rs_close() knows when to free things. We restore it upon | |
1335 | * exit, either normal or abnormal. | |
1336 | */ | |
1337 | retval = 0; | |
1338 | add_wait_queue(&port->open_wait, &wait); | |
1339 | cli(); | |
1340 | if (!tty_hung_up_p(filp)) | |
1341 | port->count--; | |
1342 | sti(); | |
1343 | port->blocked_open++; | |
1344 | while (1) { | |
1345 | cli(); | |
1346 | sbus_writeb(port_No(port) & 7, | |
1347 | &bp->r[chip]->r[CD180_CAR]); | |
1348 | udelay(1); | |
1349 | CD = sbus_readb(&bp->r[chip]->r[CD180_MSVR]) & MSVR_CD; | |
1350 | port->MSVR=bp->RTS; | |
1351 | ||
1352 | /* auto drops DTR */ | |
1353 | sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]); | |
1354 | sti(); | |
1355 | set_current_state(TASK_INTERRUPTIBLE); | |
1356 | if (tty_hung_up_p(filp) || | |
1357 | !(port->flags & ASYNC_INITIALIZED)) { | |
1358 | if (port->flags & ASYNC_HUP_NOTIFY) | |
1359 | retval = -EAGAIN; | |
1360 | else | |
1361 | retval = -ERESTARTSYS; | |
1362 | break; | |
1363 | } | |
1364 | if (!(port->flags & ASYNC_CLOSING) && | |
1365 | (do_clocal || CD)) | |
1366 | break; | |
1367 | if (signal_pending(current)) { | |
1368 | retval = -ERESTARTSYS; | |
1369 | break; | |
1370 | } | |
1371 | schedule(); | |
1372 | } | |
1373 | current->state = TASK_RUNNING; | |
1374 | remove_wait_queue(&port->open_wait, &wait); | |
1375 | if (!tty_hung_up_p(filp)) | |
1376 | port->count++; | |
1377 | port->blocked_open--; | |
1378 | if (retval) | |
1379 | return retval; | |
1380 | ||
1381 | port->flags |= ASYNC_NORMAL_ACTIVE; | |
1382 | #ifdef AURORA_DEBUG | |
1383 | printk("block_til_ready: end\n"); | |
1384 | #endif | |
1385 | return 0; | |
1386 | } | |
1387 | ||
1388 | static int aurora_open(struct tty_struct * tty, struct file * filp) | |
1389 | { | |
1390 | int board; | |
1391 | int error; | |
1392 | struct Aurora_port * port; | |
1393 | struct Aurora_board * bp; | |
1394 | unsigned long flags; | |
1395 | ||
1396 | #ifdef AURORA_DEBUG | |
1397 | printk("aurora_open: start\n"); | |
1398 | #endif | |
1399 | ||
1400 | board = AURORA_BOARD(tty->index); | |
1401 | if (board > AURORA_NBOARD || | |
1402 | !(aurora_board[board].flags & AURORA_BOARD_PRESENT)) { | |
1403 | #ifdef AURORA_DEBUG | |
1404 | printk("aurora_open: error board %d present %d\n", | |
1405 | board, aurora_board[board].flags & AURORA_BOARD_PRESENT); | |
1406 | #endif | |
1407 | return -ENODEV; | |
1408 | } | |
1409 | ||
1410 | bp = &aurora_board[board]; | |
1411 | port = aurora_port + board * AURORA_NPORT * AURORA_NCD180 + AURORA_PORT(tty->index); | |
1412 | if ((aurora_paranoia_check(port, tty->name, "aurora_open")) { | |
1413 | #ifdef AURORA_DEBUG | |
1414 | printk("aurora_open: error paranoia check\n"); | |
1415 | #endif | |
1416 | return -ENODEV; | |
1417 | } | |
1418 | ||
1419 | port->count++; | |
1420 | tty->driver_data = port; | |
1421 | port->tty = tty; | |
1422 | ||
1423 | if ((error = aurora_setup_port(bp, port))) { | |
1424 | #ifdef AURORA_DEBUG | |
1425 | printk("aurora_open: error aurora_setup_port ret %d\n",error); | |
1426 | #endif | |
1427 | return error; | |
1428 | } | |
1429 | ||
1430 | if ((error = block_til_ready(tty, filp, port))) { | |
1431 | #ifdef AURORA_DEBUG | |
1432 | printk("aurora_open: error block_til_ready ret %d\n",error); | |
1433 | #endif | |
1434 | return error; | |
1435 | } | |
1436 | ||
1437 | #ifdef AURORA_DEBUG | |
1438 | printk("aurora_open: end\n"); | |
1439 | #endif | |
1440 | return 0; | |
1441 | } | |
1442 | ||
1443 | static void aurora_close(struct tty_struct * tty, struct file * filp) | |
1444 | { | |
1445 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
1446 | struct Aurora_board *bp; | |
1447 | unsigned long flags; | |
1448 | unsigned long timeout; | |
1449 | unsigned char chip; | |
1450 | ||
1451 | #ifdef AURORA_DEBUG | |
1452 | printk("aurora_close: start\n"); | |
1453 | #endif | |
1454 | ||
1455 | if (!port || (aurora_paranoia_check(port, tty->name, "close")) | |
1456 | return; | |
1457 | ||
1458 | chip = AURORA_CD180(port_No(port)); | |
1459 | ||
1460 | save_flags(flags); cli(); | |
1461 | if (tty_hung_up_p(filp)) { | |
1462 | restore_flags(flags); | |
1463 | return; | |
1464 | } | |
1465 | ||
1466 | bp = port_Board(port); | |
1467 | if ((tty->count == 1) && (port->count != 1)) { | |
1468 | printk(KERN_DEBUG "aurora%d: aurora_close: bad port count; " | |
1469 | "tty->count is 1, port count is %d\n", | |
1470 | board_No(bp), port->count); | |
1471 | port->count = 1; | |
1472 | } | |
1473 | if (--port->count < 0) { | |
1474 | printk(KERN_DEBUG "aurora%d: aurora_close: bad port " | |
1475 | "count for tty%d: %d\n", | |
1476 | board_No(bp), port_No(port), port->count); | |
1477 | port->count = 0; | |
1478 | } | |
1479 | if (port->count) { | |
1480 | restore_flags(flags); | |
1481 | return; | |
1482 | } | |
1483 | port->flags |= ASYNC_CLOSING; | |
1484 | ||
1485 | /* Now we wait for the transmit buffer to clear; and we notify | |
1486 | * the line discipline to only process XON/XOFF characters. | |
1487 | */ | |
1488 | tty->closing = 1; | |
1489 | if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE){ | |
1490 | #ifdef AURORA_DEBUG | |
1491 | printk("aurora_close: waiting to flush...\n"); | |
1492 | #endif | |
1493 | tty_wait_until_sent(tty, port->closing_wait); | |
1494 | } | |
1495 | ||
1496 | /* At this point we stop accepting input. To do this, we | |
1497 | * disable the receive line status interrupts, and tell the | |
1498 | * interrupt driver to stop checking the data ready bit in the | |
1499 | * line status register. | |
1500 | */ | |
1501 | port->SRER &= ~SRER_RXD; | |
1502 | if (port->flags & ASYNC_INITIALIZED) { | |
1503 | port->SRER &= ~SRER_TXRDY; | |
1504 | port->SRER |= SRER_TXEMPTY; | |
1505 | sbus_writeb(port_No(port) & 7, | |
1506 | &bp->r[chip]->r[CD180_CAR]); | |
1507 | udelay(1); | |
1508 | sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]); | |
1509 | /* | |
1510 | * Before we drop DTR, make sure the UART transmitter | |
1511 | * has completely drained; this is especially | |
1512 | * important if there is a transmit FIFO! | |
1513 | */ | |
1514 | timeout = jiffies+HZ; | |
1515 | while(port->SRER & SRER_TXEMPTY) { | |
70c83375 | 1516 | msleep_interruptible(jiffies_to_msecs(port->timeout)); |
1da177e4 LT |
1517 | if (time_after(jiffies, timeout)) |
1518 | break; | |
1519 | } | |
1520 | } | |
1521 | #ifdef AURORA_DEBUG | |
1522 | printk("aurora_close: shutdown_port\n"); | |
1523 | #endif | |
1524 | aurora_shutdown_port(bp, port); | |
1525 | if (tty->driver->flush_buffer) | |
1526 | tty->driver->flush_buffer(tty); | |
1527 | tty_ldisc_flush(tty); | |
1528 | tty->closing = 0; | |
1529 | port->event = 0; | |
1530 | port->tty = 0; | |
1531 | if (port->blocked_open) { | |
1532 | if (port->close_delay) { | |
70c83375 | 1533 | msleep_interruptible(jiffies_to_msecs(port->close_delay)); |
1da177e4 LT |
1534 | } |
1535 | wake_up_interruptible(&port->open_wait); | |
1536 | } | |
1537 | port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); | |
1538 | wake_up_interruptible(&port->close_wait); | |
1539 | restore_flags(flags); | |
1540 | #ifdef AURORA_DEBUG | |
1541 | printk("aurora_close: end\n"); | |
1542 | #endif | |
1543 | } | |
1544 | ||
1545 | static int aurora_write(struct tty_struct * tty, | |
1546 | const unsigned char *buf, int count) | |
1547 | { | |
1548 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
1549 | struct Aurora_board *bp; | |
1550 | int c, total = 0; | |
1551 | unsigned long flags; | |
1552 | unsigned char chip; | |
1553 | ||
1554 | #ifdef AURORA_DEBUG | |
1555 | printk("aurora_write: start %d\n",count); | |
1556 | #endif | |
1557 | if ((aurora_paranoia_check(port, tty->name, "aurora_write")) | |
1558 | return 0; | |
1559 | ||
1560 | chip = AURORA_CD180(port_No(port)); | |
1561 | ||
1562 | bp = port_Board(port); | |
1563 | ||
1564 | if (!tty || !port->xmit_buf || !tmp_buf) | |
1565 | return 0; | |
1566 | ||
1567 | save_flags(flags); | |
1568 | while (1) { | |
1569 | cli(); | |
4b40033e | 1570 | c = min(count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1, |
1da177e4 LT |
1571 | SERIAL_XMIT_SIZE - port->xmit_head)); |
1572 | if (c <= 0) { | |
1573 | restore_flags(flags); | |
1574 | break; | |
1575 | } | |
1576 | memcpy(port->xmit_buf + port->xmit_head, buf, c); | |
1577 | port->xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE-1); | |
1578 | port->xmit_cnt += c; | |
1579 | restore_flags(flags); | |
1580 | ||
1581 | buf += c; | |
1582 | count -= c; | |
1583 | total += c; | |
1584 | } | |
1585 | ||
1586 | cli(); | |
1587 | if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped && | |
1588 | !(port->SRER & SRER_TXRDY)) { | |
1589 | port->SRER |= SRER_TXRDY; | |
1590 | sbus_writeb(port_No(port) & 7, | |
1591 | &bp->r[chip]->r[CD180_CAR]); | |
1592 | udelay(1); | |
1593 | sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]); | |
1594 | } | |
1595 | restore_flags(flags); | |
1596 | #ifdef AURORA_DEBUG | |
1597 | printk("aurora_write: end %d\n",total); | |
1598 | #endif | |
1599 | return total; | |
1600 | } | |
1601 | ||
1602 | static void aurora_put_char(struct tty_struct * tty, unsigned char ch) | |
1603 | { | |
1604 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
1605 | unsigned long flags; | |
1606 | ||
1607 | #ifdef AURORA_DEBUG | |
1608 | printk("aurora_put_char: start %c\n",ch); | |
1609 | #endif | |
1610 | if ((aurora_paranoia_check(port, tty->name, "aurora_put_char")) | |
1611 | return; | |
1612 | ||
1613 | if (!tty || !port->xmit_buf) | |
1614 | return; | |
1615 | ||
1616 | save_flags(flags); cli(); | |
1617 | ||
1618 | if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { | |
1619 | restore_flags(flags); | |
1620 | return; | |
1621 | } | |
1622 | ||
1623 | port->xmit_buf[port->xmit_head++] = ch; | |
1624 | port->xmit_head &= SERIAL_XMIT_SIZE - 1; | |
1625 | port->xmit_cnt++; | |
1626 | restore_flags(flags); | |
1627 | #ifdef AURORA_DEBUG | |
1628 | printk("aurora_put_char: end\n"); | |
1629 | #endif | |
1630 | } | |
1631 | ||
1632 | static void aurora_flush_chars(struct tty_struct * tty) | |
1633 | { | |
1634 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
1635 | unsigned long flags; | |
1636 | unsigned char chip; | |
1637 | ||
1638 | /*#ifdef AURORA_DEBUG | |
1639 | printk("aurora_flush_chars: start\n"); | |
1640 | #endif*/ | |
1641 | if ((aurora_paranoia_check(port, tty->name, "aurora_flush_chars")) | |
1642 | return; | |
1643 | ||
1644 | chip = AURORA_CD180(port_No(port)); | |
1645 | ||
1646 | if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || | |
1647 | !port->xmit_buf) | |
1648 | return; | |
1649 | ||
1650 | save_flags(flags); cli(); | |
1651 | port->SRER |= SRER_TXRDY; | |
1652 | sbus_writeb(port_No(port) & 7, | |
1653 | &port_Board(port)->r[chip]->r[CD180_CAR]); | |
1654 | udelay(1); | |
1655 | sbus_writeb(port->SRER, | |
1656 | &port_Board(port)->r[chip]->r[CD180_SRER]); | |
1657 | restore_flags(flags); | |
1658 | /*#ifdef AURORA_DEBUG | |
1659 | printk("aurora_flush_chars: end\n"); | |
1660 | #endif*/ | |
1661 | } | |
1662 | ||
1663 | static int aurora_write_room(struct tty_struct * tty) | |
1664 | { | |
1665 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
1666 | int ret; | |
1667 | ||
1668 | #ifdef AURORA_DEBUG | |
1669 | printk("aurora_write_room: start\n"); | |
1670 | #endif | |
1671 | if ((aurora_paranoia_check(port, tty->name, "aurora_write_room")) | |
1672 | return 0; | |
1673 | ||
1674 | ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; | |
1675 | if (ret < 0) | |
1676 | ret = 0; | |
1677 | #ifdef AURORA_DEBUG | |
1678 | printk("aurora_write_room: end\n"); | |
1679 | #endif | |
1680 | return ret; | |
1681 | } | |
1682 | ||
1683 | static int aurora_chars_in_buffer(struct tty_struct *tty) | |
1684 | { | |
1685 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
1686 | ||
1687 | if ((aurora_paranoia_check(port, tty->name, "aurora_chars_in_buffer")) | |
1688 | return 0; | |
1689 | ||
1690 | return port->xmit_cnt; | |
1691 | } | |
1692 | ||
1693 | static void aurora_flush_buffer(struct tty_struct *tty) | |
1694 | { | |
1695 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
1696 | unsigned long flags; | |
1697 | ||
1698 | #ifdef AURORA_DEBUG | |
1699 | printk("aurora_flush_buffer: start\n"); | |
1700 | #endif | |
1701 | if ((aurora_paranoia_check(port, tty->name, "aurora_flush_buffer")) | |
1702 | return; | |
1703 | ||
1704 | save_flags(flags); cli(); | |
1705 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; | |
1706 | restore_flags(flags); | |
1707 | ||
1708 | tty_wakeup(tty); | |
1709 | #ifdef AURORA_DEBUG | |
1710 | printk("aurora_flush_buffer: end\n"); | |
1711 | #endif | |
1712 | } | |
1713 | ||
1714 | static int aurora_tiocmget(struct tty_struct *tty, struct file *file) | |
1715 | { | |
1716 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
1717 | struct Aurora_board * bp; | |
1718 | unsigned char status,chip; | |
1719 | unsigned int result; | |
1720 | unsigned long flags; | |
1721 | ||
1722 | #ifdef AURORA_DEBUG | |
1723 | printk("aurora_get_modem_info: start\n"); | |
1724 | #endif | |
1725 | if ((aurora_paranoia_check(port, tty->name, __FUNCTION__)) | |
1726 | return -ENODEV; | |
1727 | ||
1728 | chip = AURORA_CD180(port_No(port)); | |
1729 | ||
1730 | bp = port_Board(port); | |
1731 | ||
1732 | save_flags(flags); cli(); | |
1733 | ||
1734 | sbus_writeb(port_No(port) & 7, &bp->r[chip]->r[CD180_CAR]); | |
1735 | udelay(1); | |
1736 | ||
1737 | status = sbus_readb(&bp->r[chip]->r[CD180_MSVR]); | |
1738 | result = 0/*bp->r[chip]->r[AURORA_RI] & (1u << port_No(port)) ? 0 : TIOCM_RNG*/; | |
1739 | ||
1740 | restore_flags(flags); | |
1741 | ||
1742 | result |= ((status & bp->RTS) ? TIOCM_RTS : 0) | |
1743 | | ((status & bp->DTR) ? TIOCM_DTR : 0) | |
1744 | | ((status & MSVR_CD) ? TIOCM_CAR : 0) | |
1745 | | ((status & MSVR_DSR) ? TIOCM_DSR : 0) | |
1746 | | ((status & MSVR_CTS) ? TIOCM_CTS : 0); | |
1747 | ||
1748 | #ifdef AURORA_DEBUG | |
1749 | printk("aurora_get_modem_info: end\n"); | |
1750 | #endif | |
1751 | return result; | |
1752 | } | |
1753 | ||
1754 | static int aurora_tiocmset(struct tty_struct *tty, struct file *file, | |
1755 | unsigned int set, unsigned int clear) | |
1756 | { | |
1757 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
1758 | unsigned int arg; | |
1759 | unsigned long flags; | |
1760 | struct Aurora_board *bp = port_Board(port); | |
1761 | unsigned char chip; | |
1762 | ||
1763 | #ifdef AURORA_DEBUG | |
1764 | printk("aurora_set_modem_info: start\n"); | |
1765 | #endif | |
1766 | if ((aurora_paranoia_check(port, tty->name, __FUNCTION__)) | |
1767 | return -ENODEV; | |
1768 | ||
1769 | chip = AURORA_CD180(port_No(port)); | |
1770 | ||
1771 | save_flags(flags); cli(); | |
1772 | if (set & TIOCM_RTS) | |
1773 | port->MSVR |= bp->RTS; | |
1774 | if (set & TIOCM_DTR) | |
1775 | port->MSVR |= bp->DTR; | |
1776 | if (clear & TIOCM_RTS) | |
1777 | port->MSVR &= ~bp->RTS; | |
1778 | if (clear & TIOCM_DTR) | |
1779 | port->MSVR &= ~bp->DTR; | |
1780 | ||
1781 | sbus_writeb(port_No(port) & 7, &bp->r[chip]->r[CD180_CAR]); | |
1782 | udelay(1); | |
1783 | ||
1784 | sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]); | |
1785 | ||
1786 | restore_flags(flags); | |
1787 | #ifdef AURORA_DEBUG | |
1788 | printk("aurora_set_modem_info: end\n"); | |
1789 | #endif | |
1790 | return 0; | |
1791 | } | |
1792 | ||
1793 | static void aurora_send_break(struct Aurora_port * port, unsigned long length) | |
1794 | { | |
1795 | struct Aurora_board *bp = port_Board(port); | |
1796 | unsigned long flags; | |
1797 | unsigned char chip; | |
1798 | ||
1799 | #ifdef AURORA_DEBUG | |
1800 | printk("aurora_send_break: start\n"); | |
1801 | #endif | |
1802 | chip = AURORA_CD180(port_No(port)); | |
1803 | ||
1804 | save_flags(flags); cli(); | |
1805 | ||
1806 | port->break_length = AURORA_TPS / HZ * length; | |
1807 | port->COR2 |= COR2_ETC; | |
1808 | port->SRER |= SRER_TXRDY; | |
1809 | sbus_writeb(port_No(port) & 7, &bp->r[chip]->r[CD180_CAR]); | |
1810 | udelay(1); | |
1811 | ||
1812 | sbus_writeb(port->COR2, &bp->r[chip]->r[CD180_COR2]); | |
1813 | sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]); | |
1814 | aurora_wait_CCR(bp->r[chip]); | |
1815 | ||
1816 | sbus_writeb(CCR_CORCHG2, &bp->r[chip]->r[CD180_CCR]); | |
1817 | aurora_wait_CCR(bp->r[chip]); | |
1818 | ||
1819 | restore_flags(flags); | |
1820 | #ifdef AURORA_DEBUG | |
1821 | printk("aurora_send_break: end\n"); | |
1822 | #endif | |
1823 | } | |
1824 | ||
1825 | static int aurora_set_serial_info(struct Aurora_port * port, | |
1826 | struct serial_struct * newinfo) | |
1827 | { | |
1828 | struct serial_struct tmp; | |
1829 | struct Aurora_board *bp = port_Board(port); | |
1830 | int change_speed; | |
1831 | unsigned long flags; | |
1832 | ||
1833 | #ifdef AURORA_DEBUG | |
1834 | printk("aurora_set_serial_info: start\n"); | |
1835 | #endif | |
1836 | if (copy_from_user(&tmp, newinfo, sizeof(tmp))) | |
1837 | return -EFAULT; | |
1838 | #if 0 | |
1839 | if ((tmp.irq != bp->irq) || | |
1840 | (tmp.port != bp->base) || | |
1841 | (tmp.type != PORT_CIRRUS) || | |
1842 | (tmp.baud_base != (bp->oscfreq + CD180_TPC/2) / CD180_TPC) || | |
1843 | (tmp.custom_divisor != 0) || | |
1844 | (tmp.xmit_fifo_size != CD180_NFIFO) || | |
1845 | (tmp.flags & ~AURORA_LEGAL_FLAGS)) | |
1846 | return -EINVAL; | |
1847 | #endif | |
1848 | ||
1849 | change_speed = ((port->flags & ASYNC_SPD_MASK) != | |
1850 | (tmp.flags & ASYNC_SPD_MASK)); | |
1851 | ||
1852 | if (!capable(CAP_SYS_ADMIN)) { | |
1853 | if ((tmp.close_delay != port->close_delay) || | |
1854 | (tmp.closing_wait != port->closing_wait) || | |
1855 | ((tmp.flags & ~ASYNC_USR_MASK) != | |
1856 | (port->flags & ~ASYNC_USR_MASK))) | |
1857 | return -EPERM; | |
1858 | port->flags = ((port->flags & ~ASYNC_USR_MASK) | | |
1859 | (tmp.flags & ASYNC_USR_MASK)); | |
1860 | } else { | |
1861 | port->flags = ((port->flags & ~ASYNC_FLAGS) | | |
1862 | (tmp.flags & ASYNC_FLAGS)); | |
1863 | port->close_delay = tmp.close_delay; | |
1864 | port->closing_wait = tmp.closing_wait; | |
1865 | } | |
1866 | if (change_speed) { | |
1867 | save_flags(flags); cli(); | |
1868 | aurora_change_speed(bp, port); | |
1869 | restore_flags(flags); | |
1870 | } | |
1871 | #ifdef AURORA_DEBUG | |
1872 | printk("aurora_set_serial_info: end\n"); | |
1873 | #endif | |
1874 | return 0; | |
1875 | } | |
1876 | ||
1877 | extern int aurora_get_serial_info(struct Aurora_port * port, | |
1878 | struct serial_struct * retinfo) | |
1879 | { | |
1880 | struct serial_struct tmp; | |
1881 | struct Aurora_board *bp = port_Board(port); | |
1882 | ||
1883 | #ifdef AURORA_DEBUG | |
1884 | printk("aurora_get_serial_info: start\n"); | |
1885 | #endif | |
1886 | if (!access_ok(VERIFY_WRITE, (void *) retinfo, sizeof(tmp))) | |
1887 | return -EFAULT; | |
1888 | ||
1889 | memset(&tmp, 0, sizeof(tmp)); | |
1890 | tmp.type = PORT_CIRRUS; | |
1891 | tmp.line = port - aurora_port; | |
1892 | tmp.port = 0; | |
1893 | tmp.irq = bp->irq; | |
1894 | tmp.flags = port->flags; | |
1895 | tmp.baud_base = (bp->oscfreq + CD180_TPC/2) / CD180_TPC; | |
1896 | tmp.close_delay = port->close_delay * HZ/100; | |
1897 | tmp.closing_wait = port->closing_wait * HZ/100; | |
1898 | tmp.xmit_fifo_size = CD180_NFIFO; | |
1899 | copy_to_user(retinfo, &tmp, sizeof(tmp)); | |
1900 | #ifdef AURORA_DEBUG | |
1901 | printk("aurora_get_serial_info: end\n"); | |
1902 | #endif | |
1903 | return 0; | |
1904 | } | |
1905 | ||
1906 | static int aurora_ioctl(struct tty_struct * tty, struct file * filp, | |
1907 | unsigned int cmd, unsigned long arg) | |
1908 | ||
1909 | { | |
1910 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
1911 | int retval; | |
1912 | ||
1913 | #ifdef AURORA_DEBUG | |
1914 | printk("aurora_ioctl: start\n"); | |
1915 | #endif | |
1916 | if ((aurora_paranoia_check(port, tty->name, "aurora_ioctl")) | |
1917 | return -ENODEV; | |
1918 | ||
1919 | switch (cmd) { | |
1920 | case TCSBRK: /* SVID version: non-zero arg --> no break */ | |
1921 | retval = tty_check_change(tty); | |
1922 | if (retval) | |
1923 | return retval; | |
1924 | tty_wait_until_sent(tty, 0); | |
1925 | if (!arg) | |
1926 | aurora_send_break(port, HZ/4); /* 1/4 second */ | |
1927 | return 0; | |
1928 | case TCSBRKP: /* support for POSIX tcsendbreak() */ | |
1929 | retval = tty_check_change(tty); | |
1930 | if (retval) | |
1931 | return retval; | |
1932 | tty_wait_until_sent(tty, 0); | |
1933 | aurora_send_break(port, arg ? arg*(HZ/10) : HZ/4); | |
1934 | return 0; | |
1935 | case TIOCGSOFTCAR: | |
1936 | return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *)arg); | |
1937 | case TIOCSSOFTCAR: | |
1938 | if (get_user(arg,(unsigned long *)arg)) | |
1939 | return -EFAULT; | |
1940 | tty->termios->c_cflag = | |
1941 | ((tty->termios->c_cflag & ~CLOCAL) | | |
1942 | (arg ? CLOCAL : 0)); | |
1943 | return 0; | |
1944 | case TIOCGSERIAL: | |
1945 | return aurora_get_serial_info(port, (struct serial_struct *) arg); | |
1946 | case TIOCSSERIAL: | |
1947 | return aurora_set_serial_info(port, (struct serial_struct *) arg); | |
1948 | default: | |
1949 | return -ENOIOCTLCMD; | |
1950 | }; | |
1951 | #ifdef AURORA_DEBUG | |
1952 | printk("aurora_ioctl: end\n"); | |
1953 | #endif | |
1954 | return 0; | |
1955 | } | |
1956 | ||
1957 | static void aurora_throttle(struct tty_struct * tty) | |
1958 | { | |
1959 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
1960 | struct Aurora_board *bp; | |
1961 | unsigned long flags; | |
1962 | unsigned char chip; | |
1963 | ||
1964 | #ifdef AURORA_DEBUG | |
1965 | printk("aurora_throttle: start\n"); | |
1966 | #endif | |
1967 | if ((aurora_paranoia_check(port, tty->name, "aurora_throttle")) | |
1968 | return; | |
1969 | ||
1970 | bp = port_Board(port); | |
1971 | chip = AURORA_CD180(port_No(port)); | |
1972 | ||
1973 | save_flags(flags); cli(); | |
1974 | port->MSVR &= ~bp->RTS; | |
1975 | sbus_writeb(port_No(port) & 7, &bp->r[chip]->r[CD180_CAR]); | |
1976 | udelay(1); | |
1977 | if (I_IXOFF(tty)) { | |
1978 | aurora_wait_CCR(bp->r[chip]); | |
1979 | sbus_writeb(CCR_SSCH2, &bp->r[chip]->r[CD180_CCR]); | |
1980 | aurora_wait_CCR(bp->r[chip]); | |
1981 | } | |
1982 | sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]); | |
1983 | restore_flags(flags); | |
1984 | #ifdef AURORA_DEBUG | |
1985 | printk("aurora_throttle: end\n"); | |
1986 | #endif | |
1987 | } | |
1988 | ||
1989 | static void aurora_unthrottle(struct tty_struct * tty) | |
1990 | { | |
1991 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
1992 | struct Aurora_board *bp; | |
1993 | unsigned long flags; | |
1994 | unsigned char chip; | |
1995 | ||
1996 | #ifdef AURORA_DEBUG | |
1997 | printk("aurora_unthrottle: start\n"); | |
1998 | #endif | |
1999 | if ((aurora_paranoia_check(port, tty->name, "aurora_unthrottle")) | |
2000 | return; | |
2001 | ||
2002 | bp = port_Board(port); | |
2003 | ||
2004 | chip = AURORA_CD180(port_No(port)); | |
2005 | ||
2006 | save_flags(flags); cli(); | |
2007 | port->MSVR |= bp->RTS; | |
2008 | sbus_writeb(port_No(port) & 7, | |
2009 | &bp->r[chip]->r[CD180_CAR]); | |
2010 | udelay(1); | |
2011 | if (I_IXOFF(tty)) { | |
2012 | aurora_wait_CCR(bp->r[chip]); | |
2013 | sbus_writeb(CCR_SSCH1, | |
2014 | &bp->r[chip]->r[CD180_CCR]); | |
2015 | aurora_wait_CCR(bp->r[chip]); | |
2016 | } | |
2017 | sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]); | |
2018 | restore_flags(flags); | |
2019 | #ifdef AURORA_DEBUG | |
2020 | printk("aurora_unthrottle: end\n"); | |
2021 | #endif | |
2022 | } | |
2023 | ||
2024 | static void aurora_stop(struct tty_struct * tty) | |
2025 | { | |
2026 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
2027 | struct Aurora_board *bp; | |
2028 | unsigned long flags; | |
2029 | unsigned char chip; | |
2030 | ||
2031 | #ifdef AURORA_DEBUG | |
2032 | printk("aurora_stop: start\n"); | |
2033 | #endif | |
2034 | if ((aurora_paranoia_check(port, tty->name, "aurora_stop")) | |
2035 | return; | |
2036 | ||
2037 | bp = port_Board(port); | |
2038 | ||
2039 | chip = AURORA_CD180(port_No(port)); | |
2040 | ||
2041 | save_flags(flags); cli(); | |
2042 | port->SRER &= ~SRER_TXRDY; | |
2043 | sbus_writeb(port_No(port) & 7, | |
2044 | &bp->r[chip]->r[CD180_CAR]); | |
2045 | udelay(1); | |
2046 | sbus_writeb(port->SRER, | |
2047 | &bp->r[chip]->r[CD180_SRER]); | |
2048 | restore_flags(flags); | |
2049 | #ifdef AURORA_DEBUG | |
2050 | printk("aurora_stop: end\n"); | |
2051 | #endif | |
2052 | } | |
2053 | ||
2054 | static void aurora_start(struct tty_struct * tty) | |
2055 | { | |
2056 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
2057 | struct Aurora_board *bp; | |
2058 | unsigned long flags; | |
2059 | unsigned char chip; | |
2060 | ||
2061 | #ifdef AURORA_DEBUG | |
2062 | printk("aurora_start: start\n"); | |
2063 | #endif | |
2064 | if ((aurora_paranoia_check(port, tty->name, "aurora_start")) | |
2065 | return; | |
2066 | ||
2067 | bp = port_Board(port); | |
2068 | ||
2069 | chip = AURORA_CD180(port_No(port)); | |
2070 | ||
2071 | save_flags(flags); cli(); | |
2072 | if (port->xmit_cnt && port->xmit_buf && !(port->SRER & SRER_TXRDY)) { | |
2073 | port->SRER |= SRER_TXRDY; | |
2074 | sbus_writeb(port_No(port) & 7, | |
2075 | &bp->r[chip]->r[CD180_CAR]); | |
2076 | udelay(1); | |
2077 | sbus_writeb(port->SRER, | |
2078 | &bp->r[chip]->r[CD180_SRER]); | |
2079 | } | |
2080 | restore_flags(flags); | |
2081 | #ifdef AURORA_DEBUG | |
2082 | printk("aurora_start: end\n"); | |
2083 | #endif | |
2084 | } | |
2085 | ||
2086 | /* | |
2087 | * This routine is called from the scheduler tqueue when the interrupt | |
2088 | * routine has signalled that a hangup has occurred. The path of | |
2089 | * hangup processing is: | |
2090 | * | |
2091 | * serial interrupt routine -> (scheduler tqueue) -> | |
2092 | * do_aurora_hangup() -> tty->hangup() -> aurora_hangup() | |
2093 | * | |
2094 | */ | |
2095 | static void do_aurora_hangup(void *private_) | |
2096 | { | |
2097 | struct Aurora_port *port = (struct Aurora_port *) private_; | |
2098 | struct tty_struct *tty; | |
2099 | ||
2100 | #ifdef AURORA_DEBUG | |
2101 | printk("do_aurora_hangup: start\n"); | |
2102 | #endif | |
2103 | tty = port->tty; | |
2104 | if (tty != NULL) { | |
2105 | tty_hangup(tty); /* FIXME: module removal race - AKPM */ | |
2106 | #ifdef AURORA_DEBUG | |
2107 | printk("do_aurora_hangup: end\n"); | |
2108 | #endif | |
2109 | } | |
2110 | } | |
2111 | ||
2112 | static void aurora_hangup(struct tty_struct * tty) | |
2113 | { | |
2114 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
2115 | struct Aurora_board *bp; | |
2116 | ||
2117 | #ifdef AURORA_DEBUG | |
2118 | printk("aurora_hangup: start\n"); | |
2119 | #endif | |
2120 | if ((aurora_paranoia_check(port, tty->name, "aurora_hangup")) | |
2121 | return; | |
2122 | ||
2123 | bp = port_Board(port); | |
2124 | ||
2125 | aurora_shutdown_port(bp, port); | |
2126 | port->event = 0; | |
2127 | port->count = 0; | |
2128 | port->flags &= ~ASYNC_NORMAL_ACTIVE; | |
2129 | port->tty = 0; | |
2130 | wake_up_interruptible(&port->open_wait); | |
2131 | #ifdef AURORA_DEBUG | |
2132 | printk("aurora_hangup: end\n"); | |
2133 | #endif | |
2134 | } | |
2135 | ||
2136 | static void aurora_set_termios(struct tty_struct * tty, struct termios * old_termios) | |
2137 | { | |
2138 | struct Aurora_port *port = (struct Aurora_port *) tty->driver_data; | |
2139 | unsigned long flags; | |
2140 | ||
2141 | #ifdef AURORA_DEBUG | |
2142 | printk("aurora_set_termios: start\n"); | |
2143 | #endif | |
2144 | if ((aurora_paranoia_check(port, tty->name, "aurora_set_termios")) | |
2145 | return; | |
2146 | ||
2147 | if (tty->termios->c_cflag == old_termios->c_cflag && | |
2148 | tty->termios->c_iflag == old_termios->c_iflag) | |
2149 | return; | |
2150 | ||
2151 | save_flags(flags); cli(); | |
2152 | aurora_change_speed(port_Board(port), port); | |
2153 | restore_flags(flags); | |
2154 | ||
2155 | if ((old_termios->c_cflag & CRTSCTS) && | |
2156 | !(tty->termios->c_cflag & CRTSCTS)) { | |
2157 | tty->hw_stopped = 0; | |
2158 | aurora_start(tty); | |
2159 | } | |
2160 | #ifdef AURORA_DEBUG | |
2161 | printk("aurora_set_termios: end\n"); | |
2162 | #endif | |
2163 | } | |
2164 | ||
2165 | static void do_aurora_bh(void) | |
2166 | { | |
2167 | run_task_queue(&tq_aurora); | |
2168 | } | |
2169 | ||
2170 | static void do_softint(void *private_) | |
2171 | { | |
2172 | struct Aurora_port *port = (struct Aurora_port *) private_; | |
2173 | struct tty_struct *tty; | |
2174 | ||
2175 | #ifdef AURORA_DEBUG | |
2176 | printk("do_softint: start\n"); | |
2177 | #endif | |
2178 | tty = port->tty; | |
2179 | if (tty == NULL) | |
2180 | return; | |
2181 | ||
2182 | if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &port->event)) { | |
2183 | tty_wakeup(tty); | |
2184 | } | |
2185 | #ifdef AURORA_DEBUG | |
2186 | printk("do_softint: end\n"); | |
2187 | #endif | |
2188 | } | |
2189 | ||
b68e31d0 | 2190 | static const struct tty_operations aurora_ops = { |
1da177e4 LT |
2191 | .open = aurora_open, |
2192 | .close = aurora_close, | |
2193 | .write = aurora_write, | |
2194 | .put_char = aurora_put_char, | |
2195 | .flush_chars = aurora_flush_chars, | |
2196 | .write_room = aurora_write_room, | |
2197 | .chars_in_buffer = aurora_chars_in_buffer, | |
2198 | .flush_buffer = aurora_flush_buffer, | |
2199 | .ioctl = aurora_ioctl, | |
2200 | .throttle = aurora_throttle, | |
2201 | .unthrottle = aurora_unthrottle, | |
2202 | .set_termios = aurora_set_termios, | |
2203 | .stop = aurora_stop, | |
2204 | .start = aurora_start, | |
2205 | .hangup = aurora_hangup, | |
2206 | .tiocmget = aurora_tiocmget, | |
2207 | .tiocmset = aurora_tiocmset, | |
2208 | }; | |
2209 | ||
2210 | static int aurora_init_drivers(void) | |
2211 | { | |
2212 | int error; | |
2213 | int i; | |
2214 | ||
2215 | #ifdef AURORA_DEBUG | |
2216 | printk("aurora_init_drivers: start\n"); | |
2217 | #endif | |
2218 | tmp_buf = (unsigned char *) get_zeroed_page(GFP_KERNEL); | |
2219 | if (tmp_buf == NULL) { | |
2220 | printk(KERN_ERR "aurora: Couldn't get free page.\n"); | |
2221 | return 1; | |
2222 | } | |
2223 | init_bh(AURORA_BH, do_aurora_bh); | |
2224 | aurora_driver = alloc_tty_driver(AURORA_INPORTS); | |
2225 | if (!aurora_driver) { | |
2226 | printk(KERN_ERR "aurora: Couldn't allocate tty driver.\n"); | |
2227 | free_page((unsigned long) tmp_buf); | |
2228 | return 1; | |
2229 | } | |
2230 | aurora_driver->owner = THIS_MODULE; | |
2231 | aurora_driver->name = "ttyA"; | |
2232 | aurora_driver->major = AURORA_MAJOR; | |
2233 | aurora_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
2234 | aurora_driver->subtype = SERIAL_TYPE_NORMAL; | |
2235 | aurora_driver->init_termios = tty_std_termios; | |
2236 | aurora_driver->init_termios.c_cflag = | |
2237 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
2238 | aurora_driver->flags = TTY_DRIVER_REAL_RAW; | |
2239 | tty_set_operations(aurora_driver, &aurora_ops); | |
2240 | error = tty_register_driver(aurora_driver); | |
2241 | if (error) { | |
2242 | put_tty_driver(aurora_driver); | |
2243 | free_page((unsigned long) tmp_buf); | |
2244 | printk(KERN_ERR "aurora: Couldn't register aurora driver, error = %d\n", | |
2245 | error); | |
2246 | return 1; | |
2247 | } | |
2248 | ||
2249 | memset(aurora_port, 0, sizeof(aurora_port)); | |
2250 | for (i = 0; i < AURORA_TNPORTS; i++) { | |
2251 | aurora_port[i].magic = AURORA_MAGIC; | |
2252 | aurora_port[i].tqueue.routine = do_softint; | |
2253 | aurora_port[i].tqueue.data = &aurora_port[i]; | |
2254 | aurora_port[i].tqueue_hangup.routine = do_aurora_hangup; | |
2255 | aurora_port[i].tqueue_hangup.data = &aurora_port[i]; | |
2256 | aurora_port[i].close_delay = 50 * HZ/100; | |
2257 | aurora_port[i].closing_wait = 3000 * HZ/100; | |
2258 | init_waitqueue_head(&aurora_port[i].open_wait); | |
2259 | init_waitqueue_head(&aurora_port[i].close_wait); | |
2260 | } | |
2261 | #ifdef AURORA_DEBUG | |
2262 | printk("aurora_init_drivers: end\n"); | |
2263 | #endif | |
2264 | return 0; | |
2265 | } | |
2266 | ||
2267 | static void aurora_release_drivers(void) | |
2268 | { | |
2269 | #ifdef AURORA_DEBUG | |
2270 | printk("aurora_release_drivers: start\n"); | |
2271 | #endif | |
2272 | free_page((unsigned long)tmp_buf); | |
2273 | tty_unregister_driver(aurora_driver); | |
2274 | put_tty_driver(aurora_driver); | |
2275 | #ifdef AURORA_DEBUG | |
2276 | printk("aurora_release_drivers: end\n"); | |
2277 | #endif | |
2278 | } | |
2279 | ||
2280 | /* | |
2281 | * Called at boot time. | |
2282 | * | |
2283 | * You can specify IO base for up to RC_NBOARD cards, | |
2284 | * using line "riscom8=0xiobase1,0xiobase2,.." at LILO prompt. | |
2285 | * Note that there will be no probing at default | |
2286 | * addresses in this case. | |
2287 | * | |
2288 | */ | |
2289 | void __init aurora_setup(char *str, int *ints) | |
2290 | { | |
2291 | int i; | |
2292 | ||
2293 | for(i=0;(i<ints[0])&&(i<4);i++) { | |
2294 | if (ints[i+1]) irqs[i]=ints[i+1]; | |
2295 | } | |
2296 | } | |
2297 | ||
2298 | static int __init aurora_real_init(void) | |
2299 | { | |
2300 | int found; | |
2301 | int i; | |
2302 | ||
2303 | printk(KERN_INFO "aurora: Driver starting.\n"); | |
2304 | if(aurora_init_drivers()) | |
2305 | return -EIO; | |
2306 | found = aurora_probe(); | |
2307 | if(!found) { | |
2308 | aurora_release_drivers(); | |
2309 | printk(KERN_INFO "aurora: No Aurora Multiport boards detected.\n"); | |
2310 | return -EIO; | |
2311 | } else { | |
2312 | printk(KERN_INFO "aurora: %d boards found.\n", found); | |
2313 | } | |
2314 | for (i = 0; i < found; i++) { | |
2315 | int ret = aurora_setup_board(&aurora_board[i]); | |
2316 | ||
2317 | if (ret) { | |
2318 | #ifdef AURORA_DEBUG | |
2319 | printk(KERN_ERR "aurora_init: error aurora_setup_board ret %d\n", | |
2320 | ret); | |
2321 | #endif | |
2322 | return ret; | |
2323 | } | |
2324 | } | |
2325 | return 0; | |
2326 | } | |
2327 | ||
2328 | int irq = 0; | |
2329 | int irq1 = 0; | |
2330 | int irq2 = 0; | |
2331 | int irq3 = 0; | |
2332 | module_param(irq , int, 0); | |
2333 | module_param(irq1, int, 0); | |
2334 | module_param(irq2, int, 0); | |
2335 | module_param(irq3, int, 0); | |
2336 | ||
2337 | static int __init aurora_init(void) | |
2338 | { | |
2339 | if (irq ) irqs[0]=irq ; | |
2340 | if (irq1) irqs[1]=irq1; | |
2341 | if (irq2) irqs[2]=irq2; | |
2342 | if (irq3) irqs[3]=irq3; | |
2343 | return aurora_real_init(); | |
2344 | } | |
2345 | ||
2346 | static void __exit aurora_cleanup(void) | |
2347 | { | |
2348 | int i; | |
2349 | ||
2350 | #ifdef AURORA_DEBUG | |
2351 | printk("cleanup_module: aurora_release_drivers\n"); | |
2352 | #endif | |
2353 | ||
2354 | aurora_release_drivers(); | |
2355 | for (i = 0; i < AURORA_NBOARD; i++) | |
2356 | if (aurora_board[i].flags & AURORA_BOARD_PRESENT) { | |
2357 | aurora_shutdown_board(&aurora_board[i]); | |
2358 | aurora_release_io_range(&aurora_board[i]); | |
2359 | } | |
2360 | } | |
2361 | ||
2362 | module_init(aurora_init); | |
2363 | module_exit(aurora_cleanup); | |
2364 | MODULE_LICENSE("GPL"); |