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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
73
74
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
338
339 if (pDrvData->IPCs[ipcnum].usIntCount == 1) {
340 pDrvData->IPCs[ipcnum].usIntCount = 2;
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 {
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 }
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_8250_port uart;
434
435 switch ( port ) {
436 case 0x3f8:
437 case 0x2f8:
438 case 0x3e8:
439 case 0x2e8:
440
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 }
448
449
450 switch ( irq ) {
451 case 3:
452 case 4:
453 case 5:
454 case 7:
455
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 }
463
464
465 memset(&uart, 0, sizeof(uart));
466
467 uart.port.uartclk = 1843200;
468 uart.port.iobase = port;
469 uart.port.irq = irq;
470 uart.port.iotype = UPIO_PORT;
471 uart.port.flags = UPF_SHARE_IRQ;
472 return serial8250_register_8250_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
490
491
492
493
494struct device mwave_device;
495
496
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
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
527
528
529
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;
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
663
664#if 0
665
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
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();
692
693 return -EIO;
694}
695
696module_init(mwave_init);
697
698
