Commit | Line | Data |
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8bff05b0 SR |
1 | /* |
2 | * iSeries vio driver interface to hvc_console.c | |
3 | * | |
4 | * This code is based heavily on hvc_vio.c and viocons.c | |
5 | * | |
6 | * Copyright (C) 2006 Stephen Rothwell, IBM Corporation | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | */ | |
22 | #include <stdarg.h> | |
23 | #include <linux/types.h> | |
24 | #include <linux/init.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/spinlock.h> | |
27 | #include <linux/console.h> | |
28 | ||
29 | #include <asm/hvconsole.h> | |
30 | #include <asm/vio.h> | |
31 | #include <asm/prom.h> | |
32 | #include <asm/iseries/vio.h> | |
33 | #include <asm/iseries/hv_call.h> | |
34 | #include <asm/iseries/hv_lp_config.h> | |
35 | #include <asm/iseries/hv_lp_event.h> | |
36 | ||
37 | #include "hvc_console.h" | |
38 | ||
39 | #define VTTY_PORTS 10 | |
40 | ||
41 | static DEFINE_SPINLOCK(consolelock); | |
42 | static DEFINE_SPINLOCK(consoleloglock); | |
43 | ||
44 | static const char hvc_driver_name[] = "hvc_console"; | |
45 | ||
46 | #define IN_BUF_SIZE 200 | |
47 | ||
48 | /* | |
49 | * Our port information. | |
50 | */ | |
51 | static struct port_info { | |
52 | HvLpIndex lp; | |
53 | u64 seq; /* sequence number of last HV send */ | |
54 | u64 ack; /* last ack from HV */ | |
55 | struct hvc_struct *hp; | |
56 | int in_start; | |
57 | int in_end; | |
58 | unsigned char in_buf[IN_BUF_SIZE]; | |
59 | } port_info[VTTY_PORTS] = { | |
60 | [ 0 ... VTTY_PORTS - 1 ] = { | |
61 | .lp = HvLpIndexInvalid | |
62 | } | |
63 | }; | |
64 | ||
65 | #define viochar_is_console(pi) ((pi) == &port_info[0]) | |
66 | ||
67 | static struct vio_device_id hvc_driver_table[] __devinitdata = { | |
68 | {"serial", "IBM,iSeries-vty"}, | |
69 | { "", "" } | |
70 | }; | |
71 | MODULE_DEVICE_TABLE(vio, hvc_driver_table); | |
72 | ||
73 | static void hvlog(char *fmt, ...) | |
74 | { | |
75 | int i; | |
76 | unsigned long flags; | |
77 | va_list args; | |
78 | static char buf[256]; | |
79 | ||
80 | spin_lock_irqsave(&consoleloglock, flags); | |
81 | va_start(args, fmt); | |
82 | i = vscnprintf(buf, sizeof(buf) - 1, fmt, args); | |
83 | va_end(args); | |
84 | buf[i++] = '\r'; | |
85 | HvCall_writeLogBuffer(buf, i); | |
86 | spin_unlock_irqrestore(&consoleloglock, flags); | |
87 | } | |
88 | ||
89 | /* | |
90 | * Initialize the common fields in a charLpEvent | |
91 | */ | |
92 | static void init_data_event(struct viocharlpevent *viochar, HvLpIndex lp) | |
93 | { | |
94 | struct HvLpEvent *hev = &viochar->event; | |
95 | ||
96 | memset(viochar, 0, sizeof(struct viocharlpevent)); | |
97 | ||
98 | hev->flags = HV_LP_EVENT_VALID | HV_LP_EVENT_DEFERRED_ACK | | |
99 | HV_LP_EVENT_INT; | |
100 | hev->xType = HvLpEvent_Type_VirtualIo; | |
101 | hev->xSubtype = viomajorsubtype_chario | viochardata; | |
102 | hev->xSourceLp = HvLpConfig_getLpIndex(); | |
103 | hev->xTargetLp = lp; | |
104 | hev->xSizeMinus1 = sizeof(struct viocharlpevent); | |
105 | hev->xSourceInstanceId = viopath_sourceinst(lp); | |
106 | hev->xTargetInstanceId = viopath_targetinst(lp); | |
107 | } | |
108 | ||
109 | static int get_chars(uint32_t vtermno, char *buf, int count) | |
110 | { | |
111 | struct port_info *pi; | |
112 | int n = 0; | |
113 | unsigned long flags; | |
114 | ||
115 | if (vtermno >= VTTY_PORTS) | |
116 | return -EINVAL; | |
117 | if (count == 0) | |
118 | return 0; | |
119 | ||
120 | pi = &port_info[vtermno]; | |
121 | spin_lock_irqsave(&consolelock, flags); | |
122 | ||
123 | if (pi->in_end == 0) | |
124 | goto done; | |
125 | ||
126 | n = pi->in_end - pi->in_start; | |
127 | if (n > count) | |
128 | n = count; | |
129 | memcpy(buf, &pi->in_buf[pi->in_start], n); | |
130 | pi->in_start += n; | |
131 | if (pi->in_start == pi->in_end) { | |
132 | pi->in_start = 0; | |
133 | pi->in_end = 0; | |
134 | } | |
135 | done: | |
136 | spin_unlock_irqrestore(&consolelock, flags); | |
137 | return n; | |
138 | } | |
139 | ||
140 | static int put_chars(uint32_t vtermno, const char *buf, int count) | |
141 | { | |
142 | struct viocharlpevent *viochar; | |
143 | struct port_info *pi; | |
144 | HvLpEvent_Rc hvrc; | |
145 | unsigned long flags; | |
146 | int sent = 0; | |
147 | ||
148 | if (vtermno >= VTTY_PORTS) | |
149 | return -EINVAL; | |
150 | ||
151 | pi = &port_info[vtermno]; | |
152 | ||
153 | spin_lock_irqsave(&consolelock, flags); | |
154 | ||
155 | if (viochar_is_console(pi) && !viopath_isactive(pi->lp)) { | |
156 | spin_lock_irqsave(&consoleloglock, flags); | |
157 | HvCall_writeLogBuffer(buf, count); | |
158 | spin_unlock_irqrestore(&consoleloglock, flags); | |
159 | sent = count; | |
160 | goto done; | |
161 | } | |
162 | ||
163 | viochar = vio_get_event_buffer(viomajorsubtype_chario); | |
164 | if (viochar == NULL) { | |
165 | hvlog("\n\rviocons: Can't get viochar buffer."); | |
166 | goto done; | |
167 | } | |
168 | ||
169 | while ((count > 0) && ((pi->seq - pi->ack) < VIOCHAR_WINDOW)) { | |
170 | int len; | |
171 | ||
172 | len = (count > VIOCHAR_MAX_DATA) ? VIOCHAR_MAX_DATA : count; | |
173 | ||
174 | if (viochar_is_console(pi)) { | |
175 | spin_lock_irqsave(&consoleloglock, flags); | |
176 | HvCall_writeLogBuffer(buf, len); | |
177 | spin_unlock_irqrestore(&consoleloglock, flags); | |
178 | } | |
179 | ||
180 | init_data_event(viochar, pi->lp); | |
181 | ||
182 | viochar->len = len; | |
183 | viochar->event.xCorrelationToken = pi->seq++; | |
184 | viochar->event.xSizeMinus1 = | |
185 | offsetof(struct viocharlpevent, data) + len; | |
186 | ||
187 | memcpy(viochar->data, buf, len); | |
188 | ||
189 | hvrc = HvCallEvent_signalLpEvent(&viochar->event); | |
190 | if (hvrc) | |
191 | hvlog("\n\rerror sending event! return code %d\n\r", | |
192 | (int)hvrc); | |
193 | sent += len; | |
194 | count -= len; | |
195 | buf += len; | |
196 | } | |
197 | ||
198 | vio_free_event_buffer(viomajorsubtype_chario, viochar); | |
199 | done: | |
200 | spin_unlock_irqrestore(&consolelock, flags); | |
201 | return sent; | |
202 | } | |
203 | ||
204 | static struct hv_ops hvc_get_put_ops = { | |
205 | .get_chars = get_chars, | |
206 | .put_chars = put_chars, | |
207 | }; | |
208 | ||
209 | static int __devinit hvc_vio_probe(struct vio_dev *vdev, | |
210 | const struct vio_device_id *id) | |
211 | { | |
212 | struct hvc_struct *hp; | |
213 | struct port_info *pi; | |
214 | ||
215 | /* probed with invalid parameters. */ | |
216 | if (!vdev || !id) | |
217 | return -EPERM; | |
218 | ||
219 | if (vdev->unit_address >= VTTY_PORTS) | |
220 | return -ENODEV; | |
221 | ||
222 | pi = &port_info[vdev->unit_address]; | |
223 | ||
4e9e95a3 SR |
224 | hp = hvc_alloc(vdev->unit_address, vdev->irq, &hvc_get_put_ops, |
225 | VIOCHAR_MAX_DATA); | |
8bff05b0 SR |
226 | if (IS_ERR(hp)) |
227 | return PTR_ERR(hp); | |
228 | pi->hp = hp; | |
229 | dev_set_drvdata(&vdev->dev, pi); | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
234 | static int __devexit hvc_vio_remove(struct vio_dev *vdev) | |
235 | { | |
236 | struct port_info *pi = dev_get_drvdata(&vdev->dev); | |
237 | struct hvc_struct *hp = pi->hp; | |
238 | ||
239 | return hvc_remove(hp); | |
240 | } | |
241 | ||
242 | static struct vio_driver hvc_vio_driver = { | |
243 | .id_table = hvc_driver_table, | |
244 | .probe = hvc_vio_probe, | |
245 | .remove = hvc_vio_remove, | |
246 | .driver = { | |
247 | .name = hvc_driver_name, | |
248 | .owner = THIS_MODULE, | |
249 | } | |
250 | }; | |
251 | ||
252 | static void hvc_open_event(struct HvLpEvent *event) | |
253 | { | |
254 | unsigned long flags; | |
255 | struct viocharlpevent *cevent = (struct viocharlpevent *)event; | |
256 | u8 port = cevent->virtual_device; | |
257 | struct port_info *pi; | |
258 | int reject = 0; | |
259 | ||
260 | if (hvlpevent_is_ack(event)) { | |
261 | if (port >= VTTY_PORTS) | |
262 | return; | |
263 | ||
264 | spin_lock_irqsave(&consolelock, flags); | |
265 | ||
266 | pi = &port_info[port]; | |
267 | if (event->xRc == HvLpEvent_Rc_Good) { | |
268 | pi->seq = pi->ack = 0; | |
269 | /* | |
270 | * This line allows connections from the primary | |
271 | * partition but once one is connected from the | |
272 | * primary partition nothing short of a reboot | |
273 | * of linux will allow access from the hosting | |
274 | * partition again without a required iSeries fix. | |
275 | */ | |
276 | pi->lp = event->xTargetLp; | |
277 | } | |
278 | ||
279 | spin_unlock_irqrestore(&consolelock, flags); | |
280 | if (event->xRc != HvLpEvent_Rc_Good) | |
281 | printk(KERN_WARNING | |
282 | "hvc: handle_open_event: event->xRc == (%d).\n", | |
283 | event->xRc); | |
284 | ||
285 | if (event->xCorrelationToken != 0) { | |
286 | atomic_t *aptr= (atomic_t *)event->xCorrelationToken; | |
287 | atomic_set(aptr, 1); | |
288 | } else | |
289 | printk(KERN_WARNING | |
290 | "hvc: weird...got open ack without atomic\n"); | |
291 | return; | |
292 | } | |
293 | ||
294 | /* This had better require an ack, otherwise complain */ | |
295 | if (!hvlpevent_need_ack(event)) { | |
296 | printk(KERN_WARNING "hvc: viocharopen without ack bit!\n"); | |
297 | return; | |
298 | } | |
299 | ||
300 | spin_lock_irqsave(&consolelock, flags); | |
301 | ||
302 | /* Make sure this is a good virtual tty */ | |
303 | if (port >= VTTY_PORTS) { | |
304 | event->xRc = HvLpEvent_Rc_SubtypeError; | |
305 | cevent->subtype_result_code = viorc_openRejected; | |
306 | /* | |
307 | * Flag state here since we can't printk while holding | |
308 | * the consolelock spinlock. | |
309 | */ | |
310 | reject = 1; | |
311 | } else { | |
312 | pi = &port_info[port]; | |
313 | if ((pi->lp != HvLpIndexInvalid) && | |
314 | (pi->lp != event->xSourceLp)) { | |
315 | /* | |
316 | * If this is tty is already connected to a different | |
317 | * partition, fail. | |
318 | */ | |
319 | event->xRc = HvLpEvent_Rc_SubtypeError; | |
320 | cevent->subtype_result_code = viorc_openRejected; | |
321 | reject = 2; | |
322 | } else { | |
323 | pi->lp = event->xSourceLp; | |
324 | event->xRc = HvLpEvent_Rc_Good; | |
325 | cevent->subtype_result_code = viorc_good; | |
326 | pi->seq = pi->ack = 0; | |
327 | } | |
328 | } | |
329 | ||
330 | spin_unlock_irqrestore(&consolelock, flags); | |
331 | ||
332 | if (reject == 1) | |
333 | printk(KERN_WARNING "hvc: open rejected: bad virtual tty.\n"); | |
334 | else if (reject == 2) | |
335 | printk(KERN_WARNING "hvc: open rejected: console in exclusive " | |
336 | "use by another partition.\n"); | |
337 | ||
338 | /* Return the acknowledgement */ | |
339 | HvCallEvent_ackLpEvent(event); | |
340 | } | |
341 | ||
342 | /* | |
343 | * Handle a close charLpEvent. This should ONLY be an Interrupt because the | |
344 | * virtual console should never actually issue a close event to the hypervisor | |
345 | * because the virtual console never goes away. A close event coming from the | |
346 | * hypervisor simply means that there are no client consoles connected to the | |
347 | * virtual console. | |
348 | */ | |
349 | static void hvc_close_event(struct HvLpEvent *event) | |
350 | { | |
351 | unsigned long flags; | |
352 | struct viocharlpevent *cevent = (struct viocharlpevent *)event; | |
353 | u8 port = cevent->virtual_device; | |
354 | ||
355 | if (!hvlpevent_is_int(event)) { | |
356 | printk(KERN_WARNING | |
357 | "hvc: got unexpected close acknowlegement\n"); | |
358 | return; | |
359 | } | |
360 | ||
361 | if (port >= VTTY_PORTS) { | |
362 | printk(KERN_WARNING | |
363 | "hvc: close message from invalid virtual device.\n"); | |
364 | return; | |
365 | } | |
366 | ||
367 | /* For closes, just mark the console partition invalid */ | |
368 | spin_lock_irqsave(&consolelock, flags); | |
369 | ||
370 | if (port_info[port].lp == event->xSourceLp) | |
371 | port_info[port].lp = HvLpIndexInvalid; | |
372 | ||
373 | spin_unlock_irqrestore(&consolelock, flags); | |
374 | } | |
375 | ||
376 | static void hvc_data_event(struct HvLpEvent *event) | |
377 | { | |
378 | unsigned long flags; | |
379 | struct viocharlpevent *cevent = (struct viocharlpevent *)event; | |
380 | struct port_info *pi; | |
381 | int n; | |
382 | u8 port = cevent->virtual_device; | |
383 | ||
384 | if (port >= VTTY_PORTS) { | |
385 | printk(KERN_WARNING "hvc: data on invalid virtual device %d\n", | |
386 | port); | |
387 | return; | |
388 | } | |
389 | if (cevent->len == 0) | |
390 | return; | |
391 | ||
392 | /* | |
393 | * Change 05/01/2003 - Ryan Arnold: If a partition other than | |
394 | * the current exclusive partition tries to send us data | |
395 | * events then just drop them on the floor because we don't | |
396 | * want his stinking data. He isn't authorized to receive | |
397 | * data because he wasn't the first one to get the console, | |
398 | * therefore he shouldn't be allowed to send data either. | |
399 | * This will work without an iSeries fix. | |
400 | */ | |
401 | pi = &port_info[port]; | |
402 | if (pi->lp != event->xSourceLp) | |
403 | return; | |
404 | ||
405 | spin_lock_irqsave(&consolelock, flags); | |
406 | ||
407 | n = IN_BUF_SIZE - pi->in_end; | |
408 | if (n > cevent->len) | |
409 | n = cevent->len; | |
410 | if (n > 0) { | |
411 | memcpy(&pi->in_buf[pi->in_end], cevent->data, n); | |
412 | pi->in_end += n; | |
413 | } | |
414 | spin_unlock_irqrestore(&consolelock, flags); | |
415 | if (n == 0) | |
416 | printk(KERN_WARNING "hvc: input buffer overflow\n"); | |
417 | } | |
418 | ||
419 | static void hvc_ack_event(struct HvLpEvent *event) | |
420 | { | |
421 | struct viocharlpevent *cevent = (struct viocharlpevent *)event; | |
422 | unsigned long flags; | |
423 | u8 port = cevent->virtual_device; | |
424 | ||
425 | if (port >= VTTY_PORTS) { | |
426 | printk(KERN_WARNING "hvc: data on invalid virtual device\n"); | |
427 | return; | |
428 | } | |
429 | ||
430 | spin_lock_irqsave(&consolelock, flags); | |
431 | port_info[port].ack = event->xCorrelationToken; | |
432 | spin_unlock_irqrestore(&consolelock, flags); | |
433 | } | |
434 | ||
435 | static void hvc_config_event(struct HvLpEvent *event) | |
436 | { | |
437 | struct viocharlpevent *cevent = (struct viocharlpevent *)event; | |
438 | ||
439 | if (cevent->data[0] == 0x01) | |
440 | printk(KERN_INFO "hvc: window resized to %d: %d: %d: %d\n", | |
441 | cevent->data[1], cevent->data[2], | |
442 | cevent->data[3], cevent->data[4]); | |
443 | else | |
444 | printk(KERN_WARNING "hvc: unknown config event\n"); | |
445 | } | |
446 | ||
447 | static void hvc_handle_event(struct HvLpEvent *event) | |
448 | { | |
449 | int charminor; | |
450 | ||
451 | if (event == NULL) | |
452 | return; | |
453 | ||
454 | charminor = event->xSubtype & VIOMINOR_SUBTYPE_MASK; | |
455 | switch (charminor) { | |
456 | case viocharopen: | |
457 | hvc_open_event(event); | |
458 | break; | |
459 | case viocharclose: | |
460 | hvc_close_event(event); | |
461 | break; | |
462 | case viochardata: | |
463 | hvc_data_event(event); | |
464 | break; | |
465 | case viocharack: | |
466 | hvc_ack_event(event); | |
467 | break; | |
468 | case viocharconfig: | |
469 | hvc_config_event(event); | |
470 | break; | |
471 | default: | |
472 | if (hvlpevent_is_int(event) && hvlpevent_need_ack(event)) { | |
473 | event->xRc = HvLpEvent_Rc_InvalidSubtype; | |
474 | HvCallEvent_ackLpEvent(event); | |
475 | } | |
476 | } | |
477 | } | |
478 | ||
479 | static int send_open(HvLpIndex remoteLp, void *sem) | |
480 | { | |
481 | return HvCallEvent_signalLpEventFast(remoteLp, | |
482 | HvLpEvent_Type_VirtualIo, | |
483 | viomajorsubtype_chario | viocharopen, | |
484 | HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck, | |
485 | viopath_sourceinst(remoteLp), | |
486 | viopath_targetinst(remoteLp), | |
487 | (u64)(unsigned long)sem, VIOVERSION << 16, | |
488 | 0, 0, 0, 0); | |
489 | } | |
490 | ||
491 | static int hvc_vio_init(void) | |
492 | { | |
493 | atomic_t wait_flag; | |
494 | int rc; | |
495 | ||
496 | /* +2 for fudge */ | |
497 | rc = viopath_open(HvLpConfig_getPrimaryLpIndex(), | |
498 | viomajorsubtype_chario, VIOCHAR_WINDOW + 2); | |
499 | if (rc) | |
500 | printk(KERN_WARNING "hvc: error opening to primary %d\n", rc); | |
501 | ||
502 | if (viopath_hostLp == HvLpIndexInvalid) | |
503 | vio_set_hostlp(); | |
504 | ||
505 | /* | |
506 | * And if the primary is not the same as the hosting LP, open to the | |
507 | * hosting lp | |
508 | */ | |
509 | if ((viopath_hostLp != HvLpIndexInvalid) && | |
510 | (viopath_hostLp != HvLpConfig_getPrimaryLpIndex())) { | |
511 | printk(KERN_INFO "hvc: open path to hosting (%d)\n", | |
512 | viopath_hostLp); | |
513 | rc = viopath_open(viopath_hostLp, viomajorsubtype_chario, | |
514 | VIOCHAR_WINDOW + 2); /* +2 for fudge */ | |
515 | if (rc) | |
516 | printk(KERN_WARNING | |
517 | "error opening to partition %d: %d\n", | |
518 | viopath_hostLp, rc); | |
519 | } | |
520 | ||
521 | if (vio_setHandler(viomajorsubtype_chario, hvc_handle_event) < 0) | |
522 | printk(KERN_WARNING | |
523 | "hvc: error seting handler for console events!\n"); | |
524 | ||
525 | /* | |
526 | * First, try to open the console to the hosting lp. | |
527 | * Wait on a semaphore for the response. | |
528 | */ | |
529 | atomic_set(&wait_flag, 0); | |
530 | if ((viopath_isactive(viopath_hostLp)) && | |
531 | (send_open(viopath_hostLp, &wait_flag) == 0)) { | |
532 | printk(KERN_INFO "hvc: hosting partition %d\n", viopath_hostLp); | |
533 | while (atomic_read(&wait_flag) == 0) | |
534 | mb(); | |
535 | atomic_set(&wait_flag, 0); | |
536 | } | |
537 | ||
538 | /* | |
539 | * If we don't have an active console, try the primary | |
540 | */ | |
541 | if ((!viopath_isactive(port_info[0].lp)) && | |
542 | (viopath_isactive(HvLpConfig_getPrimaryLpIndex())) && | |
543 | (send_open(HvLpConfig_getPrimaryLpIndex(), &wait_flag) == 0)) { | |
544 | printk(KERN_INFO "hvc: opening console to primary partition\n"); | |
545 | while (atomic_read(&wait_flag) == 0) | |
546 | mb(); | |
547 | } | |
548 | ||
549 | /* Register as a vio device to receive callbacks */ | |
550 | rc = vio_register_driver(&hvc_vio_driver); | |
551 | ||
552 | return rc; | |
553 | } | |
554 | module_init(hvc_vio_init); /* after drivers/char/hvc_console.c */ | |
555 | ||
556 | static void hvc_vio_exit(void) | |
557 | { | |
558 | vio_unregister_driver(&hvc_vio_driver); | |
559 | } | |
560 | module_exit(hvc_vio_exit); | |
561 | ||
562 | /* the device tree order defines our numbering */ | |
563 | static int hvc_find_vtys(void) | |
564 | { | |
565 | struct device_node *vty; | |
566 | int num_found = 0; | |
567 | ||
568 | for (vty = of_find_node_by_name(NULL, "vty"); vty != NULL; | |
569 | vty = of_find_node_by_name(vty, "vty")) { | |
570 | uint32_t *vtermno; | |
571 | ||
572 | /* We have statically defined space for only a certain number | |
573 | * of console adapters. | |
574 | */ | |
575 | if ((num_found >= MAX_NR_HVC_CONSOLES) || | |
576 | (num_found >= VTTY_PORTS)) | |
577 | break; | |
578 | ||
579 | vtermno = (uint32_t *)get_property(vty, "reg", NULL); | |
580 | if (!vtermno) | |
581 | continue; | |
582 | ||
583 | if (!device_is_compatible(vty, "IBM,iSeries-vty")) | |
584 | continue; | |
585 | ||
586 | if (num_found == 0) | |
587 | add_preferred_console("hvc", 0, NULL); | |
588 | hvc_instantiate(*vtermno, num_found, &hvc_get_put_ops); | |
589 | ++num_found; | |
590 | } | |
591 | ||
592 | return num_found; | |
593 | } | |
594 | console_initcall(hvc_find_vtys); |