Loading...
1/*
2*
3* mwavedd.c -- mwave device driver
4*
5*
6* Written By: Mike Sullivan IBM Corporation
7*
8* Copyright (C) 1999 IBM Corporation
9*
10* This program is free software; you can redistribute it and/or modify
11* it under the terms of the GNU General Public License as published by
12* the Free Software Foundation; either version 2 of the License, or
13* (at your option) any later version.
14*
15* This program is distributed in the hope that it will be useful,
16* but WITHOUT ANY WARRANTY; without even the implied warranty of
17* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18* GNU General Public License for more details.
19*
20* NO WARRANTY
21* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
22* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
23* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
24* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
25* solely responsible for determining the appropriateness of using and
26* distributing the Program and assumes all risks associated with its
27* exercise of rights under this Agreement, including but not limited to
28* the risks and costs of program errors, damage to or loss of data,
29* programs or equipment, and unavailability or interruption of operations.
30*
31* DISCLAIMER OF LIABILITY
32* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
33* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
35* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
36* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
37* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
38* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
39*
40* You should have received a copy of the GNU General Public License
41* along with this program; if not, write to the Free Software
42* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
43*
44*
45* 10/23/2000 - Alpha Release
46* First release to the public
47*/
48
49#include <linux/module.h>
50#include <linux/kernel.h>
51#include <linux/fs.h>
52#include <linux/init.h>
53#include <linux/major.h>
54#include <linux/miscdevice.h>
55#include <linux/device.h>
56#include <linux/serial.h>
57#include <linux/sched.h>
58#include <linux/spinlock.h>
59#include <linux/mutex.h>
60#include <linux/delay.h>
61#include <linux/serial_8250.h>
62#include "smapi.h"
63#include "mwavedd.h"
64#include "3780i.h"
65#include "tp3780i.h"
66
67MODULE_DESCRIPTION("3780i Advanced Communications Processor (Mwave) driver");
68MODULE_AUTHOR("Mike Sullivan and Paul Schroeder");
69MODULE_LICENSE("GPL");
70
71/*
72* These parameters support the setting of MWave resources. Note that no
73* checks are made against other devices (ie. superio) for conflicts.
74* We'll depend on users using the tpctl utility to do that for now
75*/
76static DEFINE_MUTEX(mwave_mutex);
77int mwave_debug = 0;
78int mwave_3780i_irq = 0;
79int mwave_3780i_io = 0;
80int mwave_uart_irq = 0;
81int mwave_uart_io = 0;
82module_param(mwave_debug, int, 0);
83module_param(mwave_3780i_irq, int, 0);
84module_param(mwave_3780i_io, int, 0);
85module_param(mwave_uart_irq, int, 0);
86module_param(mwave_uart_io, int, 0);
87
88static int mwave_open(struct inode *inode, struct file *file);
89static int mwave_close(struct inode *inode, struct file *file);
90static long mwave_ioctl(struct file *filp, unsigned int iocmd,
91 unsigned long ioarg);
92
93MWAVE_DEVICE_DATA mwave_s_mdd;
94
95static int mwave_open(struct inode *inode, struct file *file)
96{
97 unsigned int retval = 0;
98
99 PRINTK_3(TRACE_MWAVE,
100 "mwavedd::mwave_open, entry inode %p file %p\n",
101 inode, file);
102 PRINTK_2(TRACE_MWAVE,
103 "mwavedd::mwave_open, exit return retval %x\n", retval);
104
105 return retval;
106}
107
108static int mwave_close(struct inode *inode, struct file *file)
109{
110 unsigned int retval = 0;
111
112 PRINTK_3(TRACE_MWAVE,
113 "mwavedd::mwave_close, entry inode %p file %p\n",
114 inode, file);
115
116 PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_close, exit retval %x\n",
117 retval);
118
119 return retval;
120}
121
122static long mwave_ioctl(struct file *file, unsigned int iocmd,
123 unsigned long ioarg)
124{
125 unsigned int retval = 0;
126 pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
127 void __user *arg = (void __user *)ioarg;
128
129 PRINTK_4(TRACE_MWAVE,
130 "mwavedd::mwave_ioctl, entry file %p cmd %x arg %x\n",
131 file, iocmd, (int) ioarg);
132
133 switch (iocmd) {
134
135 case IOCTL_MW_RESET:
136 PRINTK_1(TRACE_MWAVE,
137 "mwavedd::mwave_ioctl, IOCTL_MW_RESET"
138 " calling tp3780I_ResetDSP\n");
139 mutex_lock(&mwave_mutex);
140 retval = tp3780I_ResetDSP(&pDrvData->rBDData);
141 mutex_unlock(&mwave_mutex);
142 PRINTK_2(TRACE_MWAVE,
143 "mwavedd::mwave_ioctl, IOCTL_MW_RESET"
144 " retval %x from tp3780I_ResetDSP\n",
145 retval);
146 break;
147
148 case IOCTL_MW_RUN:
149 PRINTK_1(TRACE_MWAVE,
150 "mwavedd::mwave_ioctl, IOCTL_MW_RUN"
151 " calling tp3780I_StartDSP\n");
152 mutex_lock(&mwave_mutex);
153 retval = tp3780I_StartDSP(&pDrvData->rBDData);
154 mutex_unlock(&mwave_mutex);
155 PRINTK_2(TRACE_MWAVE,
156 "mwavedd::mwave_ioctl, IOCTL_MW_RUN"
157 " retval %x from tp3780I_StartDSP\n",
158 retval);
159 break;
160
161 case IOCTL_MW_DSP_ABILITIES: {
162 MW_ABILITIES rAbilities;
163
164 PRINTK_1(TRACE_MWAVE,
165 "mwavedd::mwave_ioctl,"
166 " IOCTL_MW_DSP_ABILITIES calling"
167 " tp3780I_QueryAbilities\n");
168 mutex_lock(&mwave_mutex);
169 retval = tp3780I_QueryAbilities(&pDrvData->rBDData,
170 &rAbilities);
171 mutex_unlock(&mwave_mutex);
172 PRINTK_2(TRACE_MWAVE,
173 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
174 " retval %x from tp3780I_QueryAbilities\n",
175 retval);
176 if (retval == 0) {
177 if( copy_to_user(arg, &rAbilities,
178 sizeof(MW_ABILITIES)) )
179 return -EFAULT;
180 }
181 PRINTK_2(TRACE_MWAVE,
182 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
183 " exit retval %x\n",
184 retval);
185 }
186 break;
187
188 case IOCTL_MW_READ_DATA:
189 case IOCTL_MW_READCLEAR_DATA: {
190 MW_READWRITE rReadData;
191 unsigned short __user *pusBuffer = NULL;
192
193 if( copy_from_user(&rReadData, arg,
194 sizeof(MW_READWRITE)) )
195 return -EFAULT;
196 pusBuffer = (unsigned short __user *) (rReadData.pBuf);
197
198 PRINTK_4(TRACE_MWAVE,
199 "mwavedd::mwave_ioctl IOCTL_MW_READ_DATA,"
200 " size %lx, ioarg %lx pusBuffer %p\n",
201 rReadData.ulDataLength, ioarg, pusBuffer);
202 mutex_lock(&mwave_mutex);
203 retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
204 iocmd,
205 pusBuffer,
206 rReadData.ulDataLength,
207 rReadData.usDspAddress);
208 mutex_unlock(&mwave_mutex);
209 }
210 break;
211
212 case IOCTL_MW_READ_INST: {
213 MW_READWRITE rReadData;
214 unsigned short __user *pusBuffer = NULL;
215
216 if( copy_from_user(&rReadData, arg,
217 sizeof(MW_READWRITE)) )
218 return -EFAULT;
219 pusBuffer = (unsigned short __user *) (rReadData.pBuf);
220
221 PRINTK_4(TRACE_MWAVE,
222 "mwavedd::mwave_ioctl IOCTL_MW_READ_INST,"
223 " size %lx, ioarg %lx pusBuffer %p\n",
224 rReadData.ulDataLength / 2, ioarg,
225 pusBuffer);
226 mutex_lock(&mwave_mutex);
227 retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
228 iocmd, pusBuffer,
229 rReadData.ulDataLength / 2,
230 rReadData.usDspAddress);
231 mutex_unlock(&mwave_mutex);
232 }
233 break;
234
235 case IOCTL_MW_WRITE_DATA: {
236 MW_READWRITE rWriteData;
237 unsigned short __user *pusBuffer = NULL;
238
239 if( copy_from_user(&rWriteData, arg,
240 sizeof(MW_READWRITE)) )
241 return -EFAULT;
242 pusBuffer = (unsigned short __user *) (rWriteData.pBuf);
243
244 PRINTK_4(TRACE_MWAVE,
245 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA,"
246 " size %lx, ioarg %lx pusBuffer %p\n",
247 rWriteData.ulDataLength, ioarg,
248 pusBuffer);
249 mutex_lock(&mwave_mutex);
250 retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
251 iocmd, pusBuffer,
252 rWriteData.ulDataLength,
253 rWriteData.usDspAddress);
254 mutex_unlock(&mwave_mutex);
255 }
256 break;
257
258 case IOCTL_MW_WRITE_INST: {
259 MW_READWRITE rWriteData;
260 unsigned short __user *pusBuffer = NULL;
261
262 if( copy_from_user(&rWriteData, arg,
263 sizeof(MW_READWRITE)) )
264 return -EFAULT;
265 pusBuffer = (unsigned short __user *)(rWriteData.pBuf);
266
267 PRINTK_4(TRACE_MWAVE,
268 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST,"
269 " size %lx, ioarg %lx pusBuffer %p\n",
270 rWriteData.ulDataLength, ioarg,
271 pusBuffer);
272 mutex_lock(&mwave_mutex);
273 retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData,
274 iocmd, pusBuffer,
275 rWriteData.ulDataLength,
276 rWriteData.usDspAddress);
277 mutex_unlock(&mwave_mutex);
278 }
279 break;
280
281 case IOCTL_MW_REGISTER_IPC: {
282 unsigned int ipcnum = (unsigned int) ioarg;
283
284 if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
285 PRINTK_ERROR(KERN_ERR_MWAVE
286 "mwavedd::mwave_ioctl:"
287 " IOCTL_MW_REGISTER_IPC:"
288 " Error: Invalid ipcnum %x\n",
289 ipcnum);
290 return -EINVAL;
291 }
292 PRINTK_3(TRACE_MWAVE,
293 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
294 " ipcnum %x entry usIntCount %x\n",
295 ipcnum,
296 pDrvData->IPCs[ipcnum].usIntCount);
297
298 mutex_lock(&mwave_mutex);
299 pDrvData->IPCs[ipcnum].bIsHere = FALSE;
300 pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
301 mutex_unlock(&mwave_mutex);
302
303 PRINTK_2(TRACE_MWAVE,
304 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
305 " ipcnum %x exit\n",
306 ipcnum);
307 }
308 break;
309
310 case IOCTL_MW_GET_IPC: {
311 unsigned int ipcnum = (unsigned int) ioarg;
312
313 if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
314 PRINTK_ERROR(KERN_ERR_MWAVE
315 "mwavedd::mwave_ioctl:"
316 " IOCTL_MW_GET_IPC: Error:"
317 " Invalid ipcnum %x\n", ipcnum);
318 return -EINVAL;
319 }
320 PRINTK_3(TRACE_MWAVE,
321 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
322 " ipcnum %x, usIntCount %x\n",
323 ipcnum,
324 pDrvData->IPCs[ipcnum].usIntCount);
325
326 mutex_lock(&mwave_mutex);
327 if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
328 DECLARE_WAITQUEUE(wait, current);
329
330 PRINTK_2(TRACE_MWAVE,
331 "mwavedd::mwave_ioctl, thread for"
332 " ipc %x going to sleep\n",
333 ipcnum);
334 add_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
335 pDrvData->IPCs[ipcnum].bIsHere = TRUE;
336 set_current_state(TASK_INTERRUPTIBLE);
337 /* check whether an event was signalled by */
338 /* the interrupt handler while we were gone */
339 if (pDrvData->IPCs[ipcnum].usIntCount == 1) { /* first int has occurred (race condition) */
340 pDrvData->IPCs[ipcnum].usIntCount = 2; /* first int has been handled */
341 PRINTK_2(TRACE_MWAVE,
342 "mwavedd::mwave_ioctl"
343 " IOCTL_MW_GET_IPC ipcnum %x"
344 " handling first int\n",
345 ipcnum);
346 } else { /* either 1st int has not yet occurred, or we have already handled the first int */
347 schedule();
348 if (pDrvData->IPCs[ipcnum].usIntCount == 1) {
349 pDrvData->IPCs[ipcnum].usIntCount = 2;
350 }
351 PRINTK_2(TRACE_MWAVE,
352 "mwavedd::mwave_ioctl"
353 " IOCTL_MW_GET_IPC ipcnum %x"
354 " woke up and returning to"
355 " application\n",
356 ipcnum);
357 }
358 pDrvData->IPCs[ipcnum].bIsHere = FALSE;
359 remove_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
360 set_current_state(TASK_RUNNING);
361 PRINTK_2(TRACE_MWAVE,
362 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC,"
363 " returning thread for ipc %x"
364 " processing\n",
365 ipcnum);
366 }
367 mutex_unlock(&mwave_mutex);
368 }
369 break;
370
371 case IOCTL_MW_UNREGISTER_IPC: {
372 unsigned int ipcnum = (unsigned int) ioarg;
373
374 PRINTK_2(TRACE_MWAVE,
375 "mwavedd::mwave_ioctl IOCTL_MW_UNREGISTER_IPC"
376 " ipcnum %x\n",
377 ipcnum);
378 if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
379 PRINTK_ERROR(KERN_ERR_MWAVE
380 "mwavedd::mwave_ioctl:"
381 " IOCTL_MW_UNREGISTER_IPC:"
382 " Error: Invalid ipcnum %x\n",
383 ipcnum);
384 return -EINVAL;
385 }
386 mutex_lock(&mwave_mutex);
387 if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
388 pDrvData->IPCs[ipcnum].bIsEnabled = FALSE;
389 if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) {
390 wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
391 }
392 }
393 mutex_unlock(&mwave_mutex);
394 }
395 break;
396
397 default:
398 return -ENOTTY;
399 break;
400 } /* switch */
401
402 PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, exit retval %x\n", retval);
403
404 return retval;
405}
406
407
408static ssize_t mwave_read(struct file *file, char __user *buf, size_t count,
409 loff_t * ppos)
410{
411 PRINTK_5(TRACE_MWAVE,
412 "mwavedd::mwave_read entry file %p, buf %p, count %zx ppos %p\n",
413 file, buf, count, ppos);
414
415 return -EINVAL;
416}
417
418
419static ssize_t mwave_write(struct file *file, const char __user *buf,
420 size_t count, loff_t * ppos)
421{
422 PRINTK_5(TRACE_MWAVE,
423 "mwavedd::mwave_write entry file %p, buf %p,"
424 " count %zx ppos %p\n",
425 file, buf, count, ppos);
426
427 return -EINVAL;
428}
429
430
431static int register_serial_portandirq(unsigned int port, int irq)
432{
433 struct uart_port uart;
434
435 switch ( port ) {
436 case 0x3f8:
437 case 0x2f8:
438 case 0x3e8:
439 case 0x2e8:
440 /* OK */
441 break;
442 default:
443 PRINTK_ERROR(KERN_ERR_MWAVE
444 "mwavedd::register_serial_portandirq:"
445 " Error: Illegal port %x\n", port );
446 return -1;
447 } /* switch */
448 /* port is okay */
449
450 switch ( irq ) {
451 case 3:
452 case 4:
453 case 5:
454 case 7:
455 /* OK */
456 break;
457 default:
458 PRINTK_ERROR(KERN_ERR_MWAVE
459 "mwavedd::register_serial_portandirq:"
460 " Error: Illegal irq %x\n", irq );
461 return -1;
462 } /* switch */
463 /* irq is okay */
464
465 memset(&uart, 0, sizeof(struct uart_port));
466
467 uart.uartclk = 1843200;
468 uart.iobase = port;
469 uart.irq = irq;
470 uart.iotype = UPIO_PORT;
471 uart.flags = UPF_SHARE_IRQ;
472 return serial8250_register_port(&uart);
473}
474
475
476static const struct file_operations mwave_fops = {
477 .owner = THIS_MODULE,
478 .read = mwave_read,
479 .write = mwave_write,
480 .unlocked_ioctl = mwave_ioctl,
481 .open = mwave_open,
482 .release = mwave_close,
483 .llseek = default_llseek,
484};
485
486
487static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };
488
489#if 0 /* totally b0rked */
490/*
491 * sysfs support <paulsch@us.ibm.com>
492 */
493
494struct device mwave_device;
495
496/* Prevent code redundancy, create a macro for mwave_show_* functions. */
497#define mwave_show_function(attr_name, format_string, field) \
498static ssize_t mwave_show_##attr_name(struct device *dev, struct device_attribute *attr, char *buf) \
499{ \
500 DSP_3780I_CONFIG_SETTINGS *pSettings = \
501 &mwave_s_mdd.rBDData.rDspSettings; \
502 return sprintf(buf, format_string, pSettings->field); \
503}
504
505/* All of our attributes are read attributes. */
506#define mwave_dev_rd_attr(attr_name, format_string, field) \
507 mwave_show_function(attr_name, format_string, field) \
508static DEVICE_ATTR(attr_name, S_IRUGO, mwave_show_##attr_name, NULL)
509
510mwave_dev_rd_attr (3780i_dma, "%i\n", usDspDma);
511mwave_dev_rd_attr (3780i_irq, "%i\n", usDspIrq);
512mwave_dev_rd_attr (3780i_io, "%#.4x\n", usDspBaseIO);
513mwave_dev_rd_attr (uart_irq, "%i\n", usUartIrq);
514mwave_dev_rd_attr (uart_io, "%#.4x\n", usUartBaseIO);
515
516static struct device_attribute * const mwave_dev_attrs[] = {
517 &dev_attr_3780i_dma,
518 &dev_attr_3780i_irq,
519 &dev_attr_3780i_io,
520 &dev_attr_uart_irq,
521 &dev_attr_uart_io,
522};
523#endif
524
525/*
526* mwave_init is called on module load
527*
528* mwave_exit is called on module unload
529* mwave_exit is also used to clean up after an aborted mwave_init
530*/
531static void mwave_exit(void)
532{
533 pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
534
535 PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");
536
537#if 0
538 for (i = 0; i < pDrvData->nr_registered_attrs; i++)
539 device_remove_file(&mwave_device, mwave_dev_attrs[i]);
540 pDrvData->nr_registered_attrs = 0;
541
542 if (pDrvData->device_registered) {
543 device_unregister(&mwave_device);
544 pDrvData->device_registered = FALSE;
545 }
546#endif
547
548 if ( pDrvData->sLine >= 0 ) {
549 serial8250_unregister_port(pDrvData->sLine);
550 }
551 if (pDrvData->bMwaveDevRegistered) {
552 misc_deregister(&mwave_misc_dev);
553 }
554 if (pDrvData->bDSPEnabled) {
555 tp3780I_DisableDSP(&pDrvData->rBDData);
556 }
557 if (pDrvData->bResourcesClaimed) {
558 tp3780I_ReleaseResources(&pDrvData->rBDData);
559 }
560 if (pDrvData->bBDInitialized) {
561 tp3780I_Cleanup(&pDrvData->rBDData);
562 }
563
564 PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit exit\n");
565}
566
567module_exit(mwave_exit);
568
569static int __init mwave_init(void)
570{
571 int i;
572 int retval = 0;
573 pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
574
575 PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");
576
577 memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));
578
579 pDrvData->bBDInitialized = FALSE;
580 pDrvData->bResourcesClaimed = FALSE;
581 pDrvData->bDSPEnabled = FALSE;
582 pDrvData->bDSPReset = FALSE;
583 pDrvData->bMwaveDevRegistered = FALSE;
584 pDrvData->sLine = -1;
585
586 for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) {
587 pDrvData->IPCs[i].bIsEnabled = FALSE;
588 pDrvData->IPCs[i].bIsHere = FALSE;
589 pDrvData->IPCs[i].usIntCount = 0; /* no ints received yet */
590 init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
591 }
592
593 retval = tp3780I_InitializeBoardData(&pDrvData->rBDData);
594 PRINTK_2(TRACE_MWAVE,
595 "mwavedd::mwave_init, return from tp3780I_InitializeBoardData"
596 " retval %x\n",
597 retval);
598 if (retval) {
599 PRINTK_ERROR(KERN_ERR_MWAVE
600 "mwavedd::mwave_init: Error:"
601 " Failed to initialize board data\n");
602 goto cleanup_error;
603 }
604 pDrvData->bBDInitialized = TRUE;
605
606 retval = tp3780I_CalcResources(&pDrvData->rBDData);
607 PRINTK_2(TRACE_MWAVE,
608 "mwavedd::mwave_init, return from tp3780I_CalcResources"
609 " retval %x\n",
610 retval);
611 if (retval) {
612 PRINTK_ERROR(KERN_ERR_MWAVE
613 "mwavedd:mwave_init: Error:"
614 " Failed to calculate resources\n");
615 goto cleanup_error;
616 }
617
618 retval = tp3780I_ClaimResources(&pDrvData->rBDData);
619 PRINTK_2(TRACE_MWAVE,
620 "mwavedd::mwave_init, return from tp3780I_ClaimResources"
621 " retval %x\n",
622 retval);
623 if (retval) {
624 PRINTK_ERROR(KERN_ERR_MWAVE
625 "mwavedd:mwave_init: Error:"
626 " Failed to claim resources\n");
627 goto cleanup_error;
628 }
629 pDrvData->bResourcesClaimed = TRUE;
630
631 retval = tp3780I_EnableDSP(&pDrvData->rBDData);
632 PRINTK_2(TRACE_MWAVE,
633 "mwavedd::mwave_init, return from tp3780I_EnableDSP"
634 " retval %x\n",
635 retval);
636 if (retval) {
637 PRINTK_ERROR(KERN_ERR_MWAVE
638 "mwavedd:mwave_init: Error:"
639 " Failed to enable DSP\n");
640 goto cleanup_error;
641 }
642 pDrvData->bDSPEnabled = TRUE;
643
644 if (misc_register(&mwave_misc_dev) < 0) {
645 PRINTK_ERROR(KERN_ERR_MWAVE
646 "mwavedd:mwave_init: Error:"
647 " Failed to register misc device\n");
648 goto cleanup_error;
649 }
650 pDrvData->bMwaveDevRegistered = TRUE;
651
652 pDrvData->sLine = register_serial_portandirq(
653 pDrvData->rBDData.rDspSettings.usUartBaseIO,
654 pDrvData->rBDData.rDspSettings.usUartIrq
655 );
656 if (pDrvData->sLine < 0) {
657 PRINTK_ERROR(KERN_ERR_MWAVE
658 "mwavedd:mwave_init: Error:"
659 " Failed to register serial driver\n");
660 goto cleanup_error;
661 }
662 /* uart is registered */
663
664#if 0
665 /* sysfs */
666 memset(&mwave_device, 0, sizeof (struct device));
667 dev_set_name(&mwave_device, "mwave");
668
669 if (device_register(&mwave_device))
670 goto cleanup_error;
671 pDrvData->device_registered = TRUE;
672 for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) {
673 if(device_create_file(&mwave_device, mwave_dev_attrs[i])) {
674 PRINTK_ERROR(KERN_ERR_MWAVE
675 "mwavedd:mwave_init: Error:"
676 " Failed to create sysfs file %s\n",
677 mwave_dev_attrs[i]->attr.name);
678 goto cleanup_error;
679 }
680 pDrvData->nr_registered_attrs++;
681 }
682#endif
683
684 /* SUCCESS! */
685 return 0;
686
687cleanup_error:
688 PRINTK_ERROR(KERN_ERR_MWAVE
689 "mwavedd::mwave_init: Error:"
690 " Failed to initialize\n");
691 mwave_exit(); /* clean up */
692
693 return -EIO;
694}
695
696module_init(mwave_init);
697
1/*
2*
3* mwavedd.c -- mwave device driver
4*
5*
6* Written By: Mike Sullivan IBM Corporation
7*
8* Copyright (C) 1999 IBM Corporation
9*
10* This program is free software; you can redistribute it and/or modify
11* it under the terms of the GNU General Public License as published by
12* the Free Software Foundation; either version 2 of the License, or
13* (at your option) any later version.
14*
15* This program is distributed in the hope that it will be useful,
16* but WITHOUT ANY WARRANTY; without even the implied warranty of
17* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18* GNU General Public License for more details.
19*
20* NO WARRANTY
21* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
22* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
23* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
24* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
25* solely responsible for determining the appropriateness of using and
26* distributing the Program and assumes all risks associated with its
27* exercise of rights under this Agreement, including but not limited to
28* the risks and costs of program errors, damage to or loss of data,
29* programs or equipment, and unavailability or interruption of operations.
30*
31* DISCLAIMER OF LIABILITY
32* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
33* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
35* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
36* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
37* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
38* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
39*
40* You should have received a copy of the GNU General Public License
41* along with this program; if not, write to the Free Software
42* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
43*
44*
45* 10/23/2000 - Alpha Release
46* First release to the public
47*/
48
49#include <linux/module.h>
50#include <linux/kernel.h>
51#include <linux/fs.h>
52#include <linux/init.h>
53#include <linux/major.h>
54#include <linux/miscdevice.h>
55#include <linux/device.h>
56#include <linux/serial.h>
57#include <linux/sched.h>
58#include <linux/spinlock.h>
59#include <linux/mutex.h>
60#include <linux/delay.h>
61#include <linux/serial_8250.h>
62#include <linux/nospec.h>
63#include "smapi.h"
64#include "mwavedd.h"
65#include "3780i.h"
66#include "tp3780i.h"
67
68MODULE_DESCRIPTION("3780i Advanced Communications Processor (Mwave) driver");
69MODULE_AUTHOR("Mike Sullivan and Paul Schroeder");
70MODULE_LICENSE("GPL");
71
72/*
73* These parameters support the setting of MWave resources. Note that no
74* checks are made against other devices (ie. superio) for conflicts.
75* We'll depend on users using the tpctl utility to do that for now
76*/
77static DEFINE_MUTEX(mwave_mutex);
78int mwave_debug = 0;
79int mwave_3780i_irq = 0;
80int mwave_3780i_io = 0;
81int mwave_uart_irq = 0;
82int mwave_uart_io = 0;
83module_param(mwave_debug, int, 0);
84module_param_hw(mwave_3780i_irq, int, irq, 0);
85module_param_hw(mwave_3780i_io, int, ioport, 0);
86module_param_hw(mwave_uart_irq, int, irq, 0);
87module_param_hw(mwave_uart_io, int, ioport, 0);
88
89static int mwave_open(struct inode *inode, struct file *file);
90static int mwave_close(struct inode *inode, struct file *file);
91static long mwave_ioctl(struct file *filp, unsigned int iocmd,
92 unsigned long ioarg);
93
94MWAVE_DEVICE_DATA mwave_s_mdd;
95
96static int mwave_open(struct inode *inode, struct file *file)
97{
98 unsigned int retval = 0;
99
100 PRINTK_3(TRACE_MWAVE,
101 "mwavedd::mwave_open, entry inode %p file %p\n",
102 inode, file);
103 PRINTK_2(TRACE_MWAVE,
104 "mwavedd::mwave_open, exit return retval %x\n", retval);
105
106 return retval;
107}
108
109static int mwave_close(struct inode *inode, struct file *file)
110{
111 unsigned int retval = 0;
112
113 PRINTK_3(TRACE_MWAVE,
114 "mwavedd::mwave_close, entry inode %p file %p\n",
115 inode, file);
116
117 PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_close, exit retval %x\n",
118 retval);
119
120 return retval;
121}
122
123static long mwave_ioctl(struct file *file, unsigned int iocmd,
124 unsigned long ioarg)
125{
126 unsigned int retval = 0;
127 pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
128 void __user *arg = (void __user *)ioarg;
129
130 PRINTK_4(TRACE_MWAVE,
131 "mwavedd::mwave_ioctl, entry file %p cmd %x arg %x\n",
132 file, iocmd, (int) ioarg);
133
134 switch (iocmd) {
135
136 case IOCTL_MW_RESET:
137 PRINTK_1(TRACE_MWAVE,
138 "mwavedd::mwave_ioctl, IOCTL_MW_RESET"
139 " calling tp3780I_ResetDSP\n");
140 mutex_lock(&mwave_mutex);
141 retval = tp3780I_ResetDSP(&pDrvData->rBDData);
142 mutex_unlock(&mwave_mutex);
143 PRINTK_2(TRACE_MWAVE,
144 "mwavedd::mwave_ioctl, IOCTL_MW_RESET"
145 " retval %x from tp3780I_ResetDSP\n",
146 retval);
147 break;
148
149 case IOCTL_MW_RUN:
150 PRINTK_1(TRACE_MWAVE,
151 "mwavedd::mwave_ioctl, IOCTL_MW_RUN"
152 " calling tp3780I_StartDSP\n");
153 mutex_lock(&mwave_mutex);
154 retval = tp3780I_StartDSP(&pDrvData->rBDData);
155 mutex_unlock(&mwave_mutex);
156 PRINTK_2(TRACE_MWAVE,
157 "mwavedd::mwave_ioctl, IOCTL_MW_RUN"
158 " retval %x from tp3780I_StartDSP\n",
159 retval);
160 break;
161
162 case IOCTL_MW_DSP_ABILITIES: {
163 MW_ABILITIES rAbilities;
164
165 PRINTK_1(TRACE_MWAVE,
166 "mwavedd::mwave_ioctl,"
167 " IOCTL_MW_DSP_ABILITIES calling"
168 " tp3780I_QueryAbilities\n");
169 mutex_lock(&mwave_mutex);
170 retval = tp3780I_QueryAbilities(&pDrvData->rBDData,
171 &rAbilities);
172 mutex_unlock(&mwave_mutex);
173 PRINTK_2(TRACE_MWAVE,
174 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
175 " retval %x from tp3780I_QueryAbilities\n",
176 retval);
177 if (retval == 0) {
178 if( copy_to_user(arg, &rAbilities,
179 sizeof(MW_ABILITIES)) )
180 return -EFAULT;
181 }
182 PRINTK_2(TRACE_MWAVE,
183 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
184 " exit retval %x\n",
185 retval);
186 }
187 break;
188
189 case IOCTL_MW_READ_DATA:
190 case IOCTL_MW_READCLEAR_DATA: {
191 MW_READWRITE rReadData;
192 unsigned short __user *pusBuffer = NULL;
193
194 if( copy_from_user(&rReadData, arg,
195 sizeof(MW_READWRITE)) )
196 return -EFAULT;
197 pusBuffer = (unsigned short __user *) (rReadData.pBuf);
198
199 PRINTK_4(TRACE_MWAVE,
200 "mwavedd::mwave_ioctl IOCTL_MW_READ_DATA,"
201 " size %lx, ioarg %lx pusBuffer %p\n",
202 rReadData.ulDataLength, ioarg, pusBuffer);
203 mutex_lock(&mwave_mutex);
204 retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
205 iocmd,
206 pusBuffer,
207 rReadData.ulDataLength,
208 rReadData.usDspAddress);
209 mutex_unlock(&mwave_mutex);
210 }
211 break;
212
213 case IOCTL_MW_READ_INST: {
214 MW_READWRITE rReadData;
215 unsigned short __user *pusBuffer = NULL;
216
217 if( copy_from_user(&rReadData, arg,
218 sizeof(MW_READWRITE)) )
219 return -EFAULT;
220 pusBuffer = (unsigned short __user *) (rReadData.pBuf);
221
222 PRINTK_4(TRACE_MWAVE,
223 "mwavedd::mwave_ioctl IOCTL_MW_READ_INST,"
224 " size %lx, ioarg %lx pusBuffer %p\n",
225 rReadData.ulDataLength / 2, ioarg,
226 pusBuffer);
227 mutex_lock(&mwave_mutex);
228 retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
229 iocmd, pusBuffer,
230 rReadData.ulDataLength / 2,
231 rReadData.usDspAddress);
232 mutex_unlock(&mwave_mutex);
233 }
234 break;
235
236 case IOCTL_MW_WRITE_DATA: {
237 MW_READWRITE rWriteData;
238 unsigned short __user *pusBuffer = NULL;
239
240 if( copy_from_user(&rWriteData, arg,
241 sizeof(MW_READWRITE)) )
242 return -EFAULT;
243 pusBuffer = (unsigned short __user *) (rWriteData.pBuf);
244
245 PRINTK_4(TRACE_MWAVE,
246 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA,"
247 " size %lx, ioarg %lx pusBuffer %p\n",
248 rWriteData.ulDataLength, ioarg,
249 pusBuffer);
250 mutex_lock(&mwave_mutex);
251 retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
252 iocmd, pusBuffer,
253 rWriteData.ulDataLength,
254 rWriteData.usDspAddress);
255 mutex_unlock(&mwave_mutex);
256 }
257 break;
258
259 case IOCTL_MW_WRITE_INST: {
260 MW_READWRITE rWriteData;
261 unsigned short __user *pusBuffer = NULL;
262
263 if( copy_from_user(&rWriteData, arg,
264 sizeof(MW_READWRITE)) )
265 return -EFAULT;
266 pusBuffer = (unsigned short __user *)(rWriteData.pBuf);
267
268 PRINTK_4(TRACE_MWAVE,
269 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST,"
270 " size %lx, ioarg %lx pusBuffer %p\n",
271 rWriteData.ulDataLength, ioarg,
272 pusBuffer);
273 mutex_lock(&mwave_mutex);
274 retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData,
275 iocmd, pusBuffer,
276 rWriteData.ulDataLength,
277 rWriteData.usDspAddress);
278 mutex_unlock(&mwave_mutex);
279 }
280 break;
281
282 case IOCTL_MW_REGISTER_IPC: {
283 unsigned int ipcnum = (unsigned int) ioarg;
284
285 if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
286 PRINTK_ERROR(KERN_ERR_MWAVE
287 "mwavedd::mwave_ioctl:"
288 " IOCTL_MW_REGISTER_IPC:"
289 " Error: Invalid ipcnum %x\n",
290 ipcnum);
291 return -EINVAL;
292 }
293 ipcnum = array_index_nospec(ipcnum,
294 ARRAY_SIZE(pDrvData->IPCs));
295 PRINTK_3(TRACE_MWAVE,
296 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
297 " ipcnum %x entry usIntCount %x\n",
298 ipcnum,
299 pDrvData->IPCs[ipcnum].usIntCount);
300
301 mutex_lock(&mwave_mutex);
302 pDrvData->IPCs[ipcnum].bIsHere = false;
303 pDrvData->IPCs[ipcnum].bIsEnabled = true;
304 mutex_unlock(&mwave_mutex);
305
306 PRINTK_2(TRACE_MWAVE,
307 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
308 " ipcnum %x exit\n",
309 ipcnum);
310 }
311 break;
312
313 case IOCTL_MW_GET_IPC: {
314 unsigned int ipcnum = (unsigned int) ioarg;
315
316 if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
317 PRINTK_ERROR(KERN_ERR_MWAVE
318 "mwavedd::mwave_ioctl:"
319 " IOCTL_MW_GET_IPC: Error:"
320 " Invalid ipcnum %x\n", ipcnum);
321 return -EINVAL;
322 }
323 ipcnum = array_index_nospec(ipcnum,
324 ARRAY_SIZE(pDrvData->IPCs));
325 PRINTK_3(TRACE_MWAVE,
326 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
327 " ipcnum %x, usIntCount %x\n",
328 ipcnum,
329 pDrvData->IPCs[ipcnum].usIntCount);
330
331 mutex_lock(&mwave_mutex);
332 if (pDrvData->IPCs[ipcnum].bIsEnabled == true) {
333 DECLARE_WAITQUEUE(wait, current);
334
335 PRINTK_2(TRACE_MWAVE,
336 "mwavedd::mwave_ioctl, thread for"
337 " ipc %x going to sleep\n",
338 ipcnum);
339 add_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
340 pDrvData->IPCs[ipcnum].bIsHere = true;
341 set_current_state(TASK_INTERRUPTIBLE);
342 /* check whether an event was signalled by */
343 /* the interrupt handler while we were gone */
344 if (pDrvData->IPCs[ipcnum].usIntCount == 1) { /* first int has occurred (race condition) */
345 pDrvData->IPCs[ipcnum].usIntCount = 2; /* first int has been handled */
346 PRINTK_2(TRACE_MWAVE,
347 "mwavedd::mwave_ioctl"
348 " IOCTL_MW_GET_IPC ipcnum %x"
349 " handling first int\n",
350 ipcnum);
351 } else { /* either 1st int has not yet occurred, or we have already handled the first int */
352 schedule();
353 if (pDrvData->IPCs[ipcnum].usIntCount == 1) {
354 pDrvData->IPCs[ipcnum].usIntCount = 2;
355 }
356 PRINTK_2(TRACE_MWAVE,
357 "mwavedd::mwave_ioctl"
358 " IOCTL_MW_GET_IPC ipcnum %x"
359 " woke up and returning to"
360 " application\n",
361 ipcnum);
362 }
363 pDrvData->IPCs[ipcnum].bIsHere = false;
364 remove_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
365 set_current_state(TASK_RUNNING);
366 PRINTK_2(TRACE_MWAVE,
367 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC,"
368 " returning thread for ipc %x"
369 " processing\n",
370 ipcnum);
371 }
372 mutex_unlock(&mwave_mutex);
373 }
374 break;
375
376 case IOCTL_MW_UNREGISTER_IPC: {
377 unsigned int ipcnum = (unsigned int) ioarg;
378
379 PRINTK_2(TRACE_MWAVE,
380 "mwavedd::mwave_ioctl IOCTL_MW_UNREGISTER_IPC"
381 " ipcnum %x\n",
382 ipcnum);
383 if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
384 PRINTK_ERROR(KERN_ERR_MWAVE
385 "mwavedd::mwave_ioctl:"
386 " IOCTL_MW_UNREGISTER_IPC:"
387 " Error: Invalid ipcnum %x\n",
388 ipcnum);
389 return -EINVAL;
390 }
391 ipcnum = array_index_nospec(ipcnum,
392 ARRAY_SIZE(pDrvData->IPCs));
393 mutex_lock(&mwave_mutex);
394 if (pDrvData->IPCs[ipcnum].bIsEnabled == true) {
395 pDrvData->IPCs[ipcnum].bIsEnabled = false;
396 if (pDrvData->IPCs[ipcnum].bIsHere == true) {
397 wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
398 }
399 }
400 mutex_unlock(&mwave_mutex);
401 }
402 break;
403
404 default:
405 return -ENOTTY;
406 break;
407 } /* switch */
408
409 PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, exit retval %x\n", retval);
410
411 return retval;
412}
413
414
415static ssize_t mwave_read(struct file *file, char __user *buf, size_t count,
416 loff_t * ppos)
417{
418 PRINTK_5(TRACE_MWAVE,
419 "mwavedd::mwave_read entry file %p, buf %p, count %zx ppos %p\n",
420 file, buf, count, ppos);
421
422 return -EINVAL;
423}
424
425
426static ssize_t mwave_write(struct file *file, const char __user *buf,
427 size_t count, loff_t * ppos)
428{
429 PRINTK_5(TRACE_MWAVE,
430 "mwavedd::mwave_write entry file %p, buf %p,"
431 " count %zx ppos %p\n",
432 file, buf, count, ppos);
433
434 return -EINVAL;
435}
436
437
438static int register_serial_portandirq(unsigned int port, int irq)
439{
440 struct uart_8250_port uart;
441
442 switch ( port ) {
443 case 0x3f8:
444 case 0x2f8:
445 case 0x3e8:
446 case 0x2e8:
447 /* OK */
448 break;
449 default:
450 PRINTK_ERROR(KERN_ERR_MWAVE
451 "mwavedd::register_serial_portandirq:"
452 " Error: Illegal port %x\n", port );
453 return -1;
454 } /* switch */
455 /* port is okay */
456
457 switch ( irq ) {
458 case 3:
459 case 4:
460 case 5:
461 case 7:
462 /* OK */
463 break;
464 default:
465 PRINTK_ERROR(KERN_ERR_MWAVE
466 "mwavedd::register_serial_portandirq:"
467 " Error: Illegal irq %x\n", irq );
468 return -1;
469 } /* switch */
470 /* irq is okay */
471
472 memset(&uart, 0, sizeof(uart));
473
474 uart.port.uartclk = 1843200;
475 uart.port.iobase = port;
476 uart.port.irq = irq;
477 uart.port.iotype = UPIO_PORT;
478 uart.port.flags = UPF_SHARE_IRQ;
479 return serial8250_register_8250_port(&uart);
480}
481
482
483static const struct file_operations mwave_fops = {
484 .owner = THIS_MODULE,
485 .read = mwave_read,
486 .write = mwave_write,
487 .unlocked_ioctl = mwave_ioctl,
488 .open = mwave_open,
489 .release = mwave_close,
490 .llseek = default_llseek,
491};
492
493
494static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };
495
496#if 0 /* totally b0rked */
497/*
498 * sysfs support <paulsch@us.ibm.com>
499 */
500
501struct device mwave_device;
502
503/* Prevent code redundancy, create a macro for mwave_show_* functions. */
504#define mwave_show_function(attr_name, format_string, field) \
505static ssize_t mwave_show_##attr_name(struct device *dev, struct device_attribute *attr, char *buf) \
506{ \
507 DSP_3780I_CONFIG_SETTINGS *pSettings = \
508 &mwave_s_mdd.rBDData.rDspSettings; \
509 return sprintf(buf, format_string, pSettings->field); \
510}
511
512/* All of our attributes are read attributes. */
513#define mwave_dev_rd_attr(attr_name, format_string, field) \
514 mwave_show_function(attr_name, format_string, field) \
515static DEVICE_ATTR(attr_name, S_IRUGO, mwave_show_##attr_name, NULL)
516
517mwave_dev_rd_attr (3780i_dma, "%i\n", usDspDma);
518mwave_dev_rd_attr (3780i_irq, "%i\n", usDspIrq);
519mwave_dev_rd_attr (3780i_io, "%#.4x\n", usDspBaseIO);
520mwave_dev_rd_attr (uart_irq, "%i\n", usUartIrq);
521mwave_dev_rd_attr (uart_io, "%#.4x\n", usUartBaseIO);
522
523static struct device_attribute * const mwave_dev_attrs[] = {
524 &dev_attr_3780i_dma,
525 &dev_attr_3780i_irq,
526 &dev_attr_3780i_io,
527 &dev_attr_uart_irq,
528 &dev_attr_uart_io,
529};
530#endif
531
532/*
533* mwave_init is called on module load
534*
535* mwave_exit is called on module unload
536* mwave_exit is also used to clean up after an aborted mwave_init
537*/
538static void mwave_exit(void)
539{
540 pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
541
542 PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");
543
544#if 0
545 for (i = 0; i < pDrvData->nr_registered_attrs; i++)
546 device_remove_file(&mwave_device, mwave_dev_attrs[i]);
547 pDrvData->nr_registered_attrs = 0;
548
549 if (pDrvData->device_registered) {
550 device_unregister(&mwave_device);
551 pDrvData->device_registered = false;
552 }
553#endif
554
555 if ( pDrvData->sLine >= 0 ) {
556 serial8250_unregister_port(pDrvData->sLine);
557 }
558 if (pDrvData->bMwaveDevRegistered) {
559 misc_deregister(&mwave_misc_dev);
560 }
561 if (pDrvData->bDSPEnabled) {
562 tp3780I_DisableDSP(&pDrvData->rBDData);
563 }
564 if (pDrvData->bResourcesClaimed) {
565 tp3780I_ReleaseResources(&pDrvData->rBDData);
566 }
567 if (pDrvData->bBDInitialized) {
568 tp3780I_Cleanup(&pDrvData->rBDData);
569 }
570
571 PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit exit\n");
572}
573
574module_exit(mwave_exit);
575
576static int __init mwave_init(void)
577{
578 int i;
579 int retval = 0;
580 pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
581
582 PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");
583
584 memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));
585
586 pDrvData->bBDInitialized = false;
587 pDrvData->bResourcesClaimed = false;
588 pDrvData->bDSPEnabled = false;
589 pDrvData->bDSPReset = false;
590 pDrvData->bMwaveDevRegistered = false;
591 pDrvData->sLine = -1;
592
593 for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) {
594 pDrvData->IPCs[i].bIsEnabled = false;
595 pDrvData->IPCs[i].bIsHere = false;
596 pDrvData->IPCs[i].usIntCount = 0; /* no ints received yet */
597 init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
598 }
599
600 retval = tp3780I_InitializeBoardData(&pDrvData->rBDData);
601 PRINTK_2(TRACE_MWAVE,
602 "mwavedd::mwave_init, return from tp3780I_InitializeBoardData"
603 " retval %x\n",
604 retval);
605 if (retval) {
606 PRINTK_ERROR(KERN_ERR_MWAVE
607 "mwavedd::mwave_init: Error:"
608 " Failed to initialize board data\n");
609 goto cleanup_error;
610 }
611 pDrvData->bBDInitialized = true;
612
613 retval = tp3780I_CalcResources(&pDrvData->rBDData);
614 PRINTK_2(TRACE_MWAVE,
615 "mwavedd::mwave_init, return from tp3780I_CalcResources"
616 " retval %x\n",
617 retval);
618 if (retval) {
619 PRINTK_ERROR(KERN_ERR_MWAVE
620 "mwavedd:mwave_init: Error:"
621 " Failed to calculate resources\n");
622 goto cleanup_error;
623 }
624
625 retval = tp3780I_ClaimResources(&pDrvData->rBDData);
626 PRINTK_2(TRACE_MWAVE,
627 "mwavedd::mwave_init, return from tp3780I_ClaimResources"
628 " retval %x\n",
629 retval);
630 if (retval) {
631 PRINTK_ERROR(KERN_ERR_MWAVE
632 "mwavedd:mwave_init: Error:"
633 " Failed to claim resources\n");
634 goto cleanup_error;
635 }
636 pDrvData->bResourcesClaimed = true;
637
638 retval = tp3780I_EnableDSP(&pDrvData->rBDData);
639 PRINTK_2(TRACE_MWAVE,
640 "mwavedd::mwave_init, return from tp3780I_EnableDSP"
641 " retval %x\n",
642 retval);
643 if (retval) {
644 PRINTK_ERROR(KERN_ERR_MWAVE
645 "mwavedd:mwave_init: Error:"
646 " Failed to enable DSP\n");
647 goto cleanup_error;
648 }
649 pDrvData->bDSPEnabled = true;
650
651 if (misc_register(&mwave_misc_dev) < 0) {
652 PRINTK_ERROR(KERN_ERR_MWAVE
653 "mwavedd:mwave_init: Error:"
654 " Failed to register misc device\n");
655 goto cleanup_error;
656 }
657 pDrvData->bMwaveDevRegistered = true;
658
659 pDrvData->sLine = register_serial_portandirq(
660 pDrvData->rBDData.rDspSettings.usUartBaseIO,
661 pDrvData->rBDData.rDspSettings.usUartIrq
662 );
663 if (pDrvData->sLine < 0) {
664 PRINTK_ERROR(KERN_ERR_MWAVE
665 "mwavedd:mwave_init: Error:"
666 " Failed to register serial driver\n");
667 goto cleanup_error;
668 }
669 /* uart is registered */
670
671#if 0
672 /* sysfs */
673 memset(&mwave_device, 0, sizeof (struct device));
674 dev_set_name(&mwave_device, "mwave");
675
676 if (device_register(&mwave_device))
677 goto cleanup_error;
678 pDrvData->device_registered = true;
679 for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) {
680 if(device_create_file(&mwave_device, mwave_dev_attrs[i])) {
681 PRINTK_ERROR(KERN_ERR_MWAVE
682 "mwavedd:mwave_init: Error:"
683 " Failed to create sysfs file %s\n",
684 mwave_dev_attrs[i]->attr.name);
685 goto cleanup_error;
686 }
687 pDrvData->nr_registered_attrs++;
688 }
689#endif
690
691 /* SUCCESS! */
692 return 0;
693
694cleanup_error:
695 PRINTK_ERROR(KERN_ERR_MWAVE
696 "mwavedd::mwave_init: Error:"
697 " Failed to initialize\n");
698 mwave_exit(); /* clean up */
699
700 return -EIO;
701}
702
703module_init(mwave_init);
704