Version:  2.6.34 2.6.35 2.6.36 2.6.37 2.6.38 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14

Linux/drivers/media/pci/saa7164/saa7164-core.c

  1 /*
  2  *  Driver for the NXP SAA7164 PCIe bridge
  3  *
  4  *  Copyright (c) 2010 Steven Toth <stoth@kernellabs.com>
  5  *
  6  *  This program is free software; you can redistribute it and/or modify
  7  *  it under the terms of the GNU General Public License as published by
  8  *  the Free Software Foundation; either version 2 of the License, or
  9  *  (at your option) any later version.
 10  *
 11  *  This program is distributed in the hope that it will be useful,
 12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 14  *
 15  *  GNU General Public License for more details.
 16  *
 17  *  You should have received a copy of the GNU General Public License
 18  *  along with this program; if not, write to the Free Software
 19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 20  */
 21 
 22 #include <linux/init.h>
 23 #include <linux/list.h>
 24 #include <linux/module.h>
 25 #include <linux/moduleparam.h>
 26 #include <linux/kmod.h>
 27 #include <linux/kernel.h>
 28 #include <linux/slab.h>
 29 #include <linux/interrupt.h>
 30 #include <linux/delay.h>
 31 #include <asm/div64.h>
 32 
 33 #ifdef CONFIG_PROC_FS
 34 #include <linux/proc_fs.h>
 35 #endif
 36 #include "saa7164.h"
 37 
 38 MODULE_DESCRIPTION("Driver for NXP SAA7164 based TV cards");
 39 MODULE_AUTHOR("Steven Toth <stoth@kernellabs.com>");
 40 MODULE_LICENSE("GPL");
 41 
 42 /*
 43  *  1 Basic
 44  *  2
 45  *  4 i2c
 46  *  8 api
 47  * 16 cmd
 48  * 32 bus
 49  */
 50 
 51 unsigned int saa_debug;
 52 module_param_named(debug, saa_debug, int, 0644);
 53 MODULE_PARM_DESC(debug, "enable debug messages");
 54 
 55 unsigned int fw_debug;
 56 module_param(fw_debug, int, 0644);
 57 MODULE_PARM_DESC(fw_debug, "Firmware debug level def:2");
 58 
 59 unsigned int encoder_buffers = SAA7164_MAX_ENCODER_BUFFERS;
 60 module_param(encoder_buffers, int, 0644);
 61 MODULE_PARM_DESC(encoder_buffers, "Total buffers in read queue 16-512 def:64");
 62 
 63 unsigned int vbi_buffers = SAA7164_MAX_VBI_BUFFERS;
 64 module_param(vbi_buffers, int, 0644);
 65 MODULE_PARM_DESC(vbi_buffers, "Total buffers in read queue 16-512 def:64");
 66 
 67 unsigned int waitsecs = 10;
 68 module_param(waitsecs, int, 0644);
 69 MODULE_PARM_DESC(waitsecs, "timeout on firmware messages");
 70 
 71 static unsigned int card[]  = {[0 ... (SAA7164_MAXBOARDS - 1)] = UNSET };
 72 module_param_array(card,  int, NULL, 0444);
 73 MODULE_PARM_DESC(card, "card type");
 74 
 75 unsigned int print_histogram = 64;
 76 module_param(print_histogram, int, 0644);
 77 MODULE_PARM_DESC(print_histogram, "print histogram values once");
 78 
 79 unsigned int crc_checking = 1;
 80 module_param(crc_checking, int, 0644);
 81 MODULE_PARM_DESC(crc_checking, "enable crc sanity checking on buffers");
 82 
 83 unsigned int guard_checking = 1;
 84 module_param(guard_checking, int, 0644);
 85 MODULE_PARM_DESC(guard_checking,
 86         "enable dma sanity checking for buffer overruns");
 87 
 88 static unsigned int saa7164_devcount;
 89 
 90 static DEFINE_MUTEX(devlist);
 91 LIST_HEAD(saa7164_devlist);
 92 
 93 #define INT_SIZE 16
 94 
 95 static void saa7164_pack_verifier(struct saa7164_buffer *buf)
 96 {
 97         u8 *p = (u8 *)buf->cpu;
 98         int i;
 99 
100         for (i = 0; i < buf->actual_size; i += 2048) {
101 
102                 if ((*(p + i + 0) != 0x00) || (*(p + i + 1) != 0x00) ||
103                         (*(p + i + 2) != 0x01) || (*(p + i + 3) != 0xBA)) {
104                         printk(KERN_ERR "No pack at 0x%x\n", i);
105 #if 0
106                         print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1,
107                                        p + 1, 32, false);
108 #endif
109                 }
110         }
111 }
112 
113 #define FIXED_VIDEO_PID 0xf1
114 #define FIXED_AUDIO_PID 0xf2
115 
116 static void saa7164_ts_verifier(struct saa7164_buffer *buf)
117 {
118         struct saa7164_port *port = buf->port;
119         u32 i;
120         u8 cc, a;
121         u16 pid;
122         u8 __iomem *bufcpu = (u8 *)buf->cpu;
123 
124         port->sync_errors = 0;
125         port->v_cc_errors = 0;
126         port->a_cc_errors = 0;
127 
128         for (i = 0; i < buf->actual_size; i += 188) {
129                 if (*(bufcpu + i) != 0x47)
130                         port->sync_errors++;
131 
132                 /* TODO: Query pid lower 8 bits, ignoring upper bits intensionally */
133                 pid = ((*(bufcpu + i + 1) & 0x1f) << 8) | *(bufcpu + i + 2);
134                 cc = *(bufcpu + i + 3) & 0x0f;
135 
136                 if (pid == FIXED_VIDEO_PID) {
137                         a = ((port->last_v_cc + 1) & 0x0f);
138                         if (a != cc) {
139                                 printk(KERN_ERR "video cc last = %x current = %x i = %d\n",
140                                         port->last_v_cc, cc, i);
141                                 port->v_cc_errors++;
142                         }
143 
144                         port->last_v_cc = cc;
145                 } else
146                 if (pid == FIXED_AUDIO_PID) {
147                         a = ((port->last_a_cc + 1) & 0x0f);
148                         if (a != cc) {
149                                 printk(KERN_ERR "audio cc last = %x current = %x i = %d\n",
150                                         port->last_a_cc, cc, i);
151                                 port->a_cc_errors++;
152                         }
153 
154                         port->last_a_cc = cc;
155                 }
156 
157         }
158 
159         /* Only report errors if we've been through this function atleast
160          * once already and the cached cc values are primed. First time through
161          * always generates errors.
162          */
163         if (port->v_cc_errors && (port->done_first_interrupt > 1))
164                 printk(KERN_ERR "video pid cc, %d errors\n", port->v_cc_errors);
165 
166         if (port->a_cc_errors && (port->done_first_interrupt > 1))
167                 printk(KERN_ERR "audio pid cc, %d errors\n", port->a_cc_errors);
168 
169         if (port->sync_errors && (port->done_first_interrupt > 1))
170                 printk(KERN_ERR "sync_errors = %d\n", port->sync_errors);
171 
172         if (port->done_first_interrupt == 1)
173                 port->done_first_interrupt++;
174 }
175 
176 static void saa7164_histogram_reset(struct saa7164_histogram *hg, char *name)
177 {
178         int i;
179 
180         memset(hg, 0, sizeof(struct saa7164_histogram));
181         strcpy(hg->name, name);
182 
183         /* First 30ms x 1ms */
184         for (i = 0; i < 30; i++)
185                 hg->counter1[0 + i].val = i;
186 
187         /* 30 - 200ms x 10ms  */
188         for (i = 0; i < 18; i++)
189                 hg->counter1[30 + i].val = 30 + (i * 10);
190 
191         /* 200 - 2000ms x 100ms  */
192         for (i = 0; i < 15; i++)
193                 hg->counter1[48 + i].val = 200 + (i * 200);
194 
195         /* Catch all massive value (2secs) */
196         hg->counter1[55].val = 2000;
197 
198         /* Catch all massive value (4secs) */
199         hg->counter1[56].val = 4000;
200 
201         /* Catch all massive value (8secs) */
202         hg->counter1[57].val = 8000;
203 
204         /* Catch all massive value (15secs) */
205         hg->counter1[58].val = 15000;
206 
207         /* Catch all massive value (30secs) */
208         hg->counter1[59].val = 30000;
209 
210         /* Catch all massive value (60secs) */
211         hg->counter1[60].val = 60000;
212 
213         /* Catch all massive value (5mins) */
214         hg->counter1[61].val = 300000;
215 
216         /* Catch all massive value (15mins) */
217         hg->counter1[62].val = 900000;
218 
219         /* Catch all massive values (1hr) */
220         hg->counter1[63].val = 3600000;
221 }
222 
223 void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val)
224 {
225         int i;
226         for (i = 0; i < 64; i++) {
227                 if (val <= hg->counter1[i].val) {
228                         hg->counter1[i].count++;
229                         hg->counter1[i].update_time = jiffies;
230                         break;
231                 }
232         }
233 }
234 
235 static void saa7164_histogram_print(struct saa7164_port *port,
236         struct saa7164_histogram *hg)
237 {
238         u32 entries = 0;
239         int i;
240 
241         printk(KERN_ERR "Histogram named %s (ms, count, last_update_jiffy)\n", hg->name);
242         for (i = 0; i < 64; i++) {
243                 if (hg->counter1[i].count == 0)
244                         continue;
245 
246                 printk(KERN_ERR " %4d %12d %Ld\n",
247                         hg->counter1[i].val,
248                         hg->counter1[i].count,
249                         hg->counter1[i].update_time);
250 
251                 entries++;
252         }
253         printk(KERN_ERR "Total: %d\n", entries);
254 }
255 
256 static void saa7164_work_enchandler_helper(struct saa7164_port *port, int bufnr)
257 {
258         struct saa7164_dev *dev = port->dev;
259         struct saa7164_buffer *buf = NULL;
260         struct saa7164_user_buffer *ubuf = NULL;
261         struct list_head *c, *n;
262         int i = 0;
263         u8 __iomem *p;
264 
265         mutex_lock(&port->dmaqueue_lock);
266         list_for_each_safe(c, n, &port->dmaqueue.list) {
267 
268                 buf = list_entry(c, struct saa7164_buffer, list);
269                 if (i++ > port->hwcfg.buffercount) {
270                         printk(KERN_ERR "%s() illegal i count %d\n",
271                                 __func__, i);
272                         break;
273                 }
274 
275                 if (buf->idx == bufnr) {
276 
277                         /* Found the buffer, deal with it */
278                         dprintk(DBGLVL_IRQ, "%s() bufnr: %d\n", __func__, bufnr);
279 
280                         if (crc_checking) {
281                                 /* Throw a new checksum on the dma buffer */
282                                 buf->crc = crc32(0, buf->cpu, buf->actual_size);
283                         }
284 
285                         if (guard_checking) {
286                                 p = (u8 *)buf->cpu;
287                                 if ((*(p + buf->actual_size + 0) != 0xff) ||
288                                         (*(p + buf->actual_size + 1) != 0xff) ||
289                                         (*(p + buf->actual_size + 2) != 0xff) ||
290                                         (*(p + buf->actual_size + 3) != 0xff) ||
291                                         (*(p + buf->actual_size + 0x10) != 0xff) ||
292                                         (*(p + buf->actual_size + 0x11) != 0xff) ||
293                                         (*(p + buf->actual_size + 0x12) != 0xff) ||
294                                         (*(p + buf->actual_size + 0x13) != 0xff)) {
295                                                 printk(KERN_ERR "%s() buf %p guard buffer breach\n",
296                                                         __func__, buf);
297 #if 0
298                         print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1,
299                                        p + buf->actual_size - 32, 64, false);
300 #endif
301                                 }
302                         }
303 
304                         if ((port->nr != SAA7164_PORT_VBI1) && (port->nr != SAA7164_PORT_VBI2)) {
305                                 /* Validate the incoming buffer content */
306                                 if (port->encoder_params.stream_type == V4L2_MPEG_STREAM_TYPE_MPEG2_TS)
307                                         saa7164_ts_verifier(buf);
308                                 else if (port->encoder_params.stream_type == V4L2_MPEG_STREAM_TYPE_MPEG2_PS)
309                                         saa7164_pack_verifier(buf);
310                         }
311 
312                         /* find a free user buffer and clone to it */
313                         if (!list_empty(&port->list_buf_free.list)) {
314 
315                                 /* Pull the first buffer from the used list */
316                                 ubuf = list_first_entry(&port->list_buf_free.list,
317                                         struct saa7164_user_buffer, list);
318 
319                                 if (buf->actual_size <= ubuf->actual_size) {
320 
321                                         memcpy_fromio(ubuf->data, buf->cpu,
322                                                 ubuf->actual_size);
323 
324                                         if (crc_checking) {
325                                                 /* Throw a new checksum on the read buffer */
326                                                 ubuf->crc = crc32(0, ubuf->data, ubuf->actual_size);
327                                         }
328 
329                                         /* Requeue the buffer on the free list */
330                                         ubuf->pos = 0;
331 
332                                         list_move_tail(&ubuf->list,
333                                                 &port->list_buf_used.list);
334 
335                                         /* Flag any userland waiters */
336                                         wake_up_interruptible(&port->wait_read);
337 
338                                 } else {
339                                         printk(KERN_ERR "buf %p bufsize fails match\n", buf);
340                                 }
341 
342                         } else
343                                 printk(KERN_ERR "encirq no free buffers, increase param encoder_buffers\n");
344 
345                         /* Ensure offset into buffer remains 0, fill buffer
346                          * with known bad data. We check for this data at a later point
347                          * in time. */
348                         saa7164_buffer_zero_offsets(port, bufnr);
349                         memset_io(buf->cpu, 0xff, buf->pci_size);
350                         if (crc_checking) {
351                                 /* Throw yet aanother new checksum on the dma buffer */
352                                 buf->crc = crc32(0, buf->cpu, buf->actual_size);
353                         }
354 
355                         break;
356                 }
357         }
358         mutex_unlock(&port->dmaqueue_lock);
359 }
360 
361 static void saa7164_work_enchandler(struct work_struct *w)
362 {
363         struct saa7164_port *port =
364                 container_of(w, struct saa7164_port, workenc);
365         struct saa7164_dev *dev = port->dev;
366 
367         u32 wp, mcb, rp, cnt = 0;
368 
369         port->last_svc_msecs_diff = port->last_svc_msecs;
370         port->last_svc_msecs = jiffies_to_msecs(jiffies);
371 
372         port->last_svc_msecs_diff = port->last_svc_msecs -
373                 port->last_svc_msecs_diff;
374 
375         saa7164_histogram_update(&port->svc_interval,
376                 port->last_svc_msecs_diff);
377 
378         port->last_irq_svc_msecs_diff = port->last_svc_msecs -
379                 port->last_irq_msecs;
380 
381         saa7164_histogram_update(&port->irq_svc_interval,
382                 port->last_irq_svc_msecs_diff);
383 
384         dprintk(DBGLVL_IRQ,
385                 "%s() %Ldms elapsed irq->deferred %Ldms wp: %d rp: %d\n",
386                 __func__,
387                 port->last_svc_msecs_diff,
388                 port->last_irq_svc_msecs_diff,
389                 port->last_svc_wp,
390                 port->last_svc_rp
391                 );
392 
393         /* Current write position */
394         wp = saa7164_readl(port->bufcounter);
395         if (wp > (port->hwcfg.buffercount - 1)) {
396                 printk(KERN_ERR "%s() illegal buf count %d\n", __func__, wp);
397                 return;
398         }
399 
400         /* Most current complete buffer */
401         if (wp == 0)
402                 mcb = (port->hwcfg.buffercount - 1);
403         else
404                 mcb = wp - 1;
405 
406         while (1) {
407                 if (port->done_first_interrupt == 0) {
408                         port->done_first_interrupt++;
409                         rp = mcb;
410                 } else
411                         rp = (port->last_svc_rp + 1) % 8;
412 
413                 if (rp > (port->hwcfg.buffercount - 1)) {
414                         printk(KERN_ERR "%s() illegal rp count %d\n", __func__, rp);
415                         break;
416                 }
417 
418                 saa7164_work_enchandler_helper(port, rp);
419                 port->last_svc_rp = rp;
420                 cnt++;
421 
422                 if (rp == mcb)
423                         break;
424         }
425 
426         /* TODO: Convert this into a /proc/saa7164 style readable file */
427         if (print_histogram == port->nr) {
428                 saa7164_histogram_print(port, &port->irq_interval);
429                 saa7164_histogram_print(port, &port->svc_interval);
430                 saa7164_histogram_print(port, &port->irq_svc_interval);
431                 saa7164_histogram_print(port, &port->read_interval);
432                 saa7164_histogram_print(port, &port->poll_interval);
433                 /* TODO: fix this to preserve any previous state */
434                 print_histogram = 64 + port->nr;
435         }
436 }
437 
438 static void saa7164_work_vbihandler(struct work_struct *w)
439 {
440         struct saa7164_port *port =
441                 container_of(w, struct saa7164_port, workenc);
442         struct saa7164_dev *dev = port->dev;
443 
444         u32 wp, mcb, rp, cnt = 0;
445 
446         port->last_svc_msecs_diff = port->last_svc_msecs;
447         port->last_svc_msecs = jiffies_to_msecs(jiffies);
448         port->last_svc_msecs_diff = port->last_svc_msecs -
449                 port->last_svc_msecs_diff;
450 
451         saa7164_histogram_update(&port->svc_interval,
452                 port->last_svc_msecs_diff);
453 
454         port->last_irq_svc_msecs_diff = port->last_svc_msecs -
455                 port->last_irq_msecs;
456 
457         saa7164_histogram_update(&port->irq_svc_interval,
458                 port->last_irq_svc_msecs_diff);
459 
460         dprintk(DBGLVL_IRQ,
461                 "%s() %Ldms elapsed irq->deferred %Ldms wp: %d rp: %d\n",
462                 __func__,
463                 port->last_svc_msecs_diff,
464                 port->last_irq_svc_msecs_diff,
465                 port->last_svc_wp,
466                 port->last_svc_rp
467                 );
468 
469         /* Current write position */
470         wp = saa7164_readl(port->bufcounter);
471         if (wp > (port->hwcfg.buffercount - 1)) {
472                 printk(KERN_ERR "%s() illegal buf count %d\n", __func__, wp);
473                 return;
474         }
475 
476         /* Most current complete buffer */
477         if (wp == 0)
478                 mcb = (port->hwcfg.buffercount - 1);
479         else
480                 mcb = wp - 1;
481 
482         while (1) {
483                 if (port->done_first_interrupt == 0) {
484                         port->done_first_interrupt++;
485                         rp = mcb;
486                 } else
487                         rp = (port->last_svc_rp + 1) % 8;
488 
489                 if (rp > (port->hwcfg.buffercount - 1)) {
490                         printk(KERN_ERR "%s() illegal rp count %d\n", __func__, rp);
491                         break;
492                 }
493 
494                 saa7164_work_enchandler_helper(port, rp);
495                 port->last_svc_rp = rp;
496                 cnt++;
497 
498                 if (rp == mcb)
499                         break;
500         }
501 
502         /* TODO: Convert this into a /proc/saa7164 style readable file */
503         if (print_histogram == port->nr) {
504                 saa7164_histogram_print(port, &port->irq_interval);
505                 saa7164_histogram_print(port, &port->svc_interval);
506                 saa7164_histogram_print(port, &port->irq_svc_interval);
507                 saa7164_histogram_print(port, &port->read_interval);
508                 saa7164_histogram_print(port, &port->poll_interval);
509                 /* TODO: fix this to preserve any previous state */
510                 print_histogram = 64 + port->nr;
511         }
512 }
513 
514 static void saa7164_work_cmdhandler(struct work_struct *w)
515 {
516         struct saa7164_dev *dev = container_of(w, struct saa7164_dev, workcmd);
517 
518         /* Wake up any complete commands */
519         saa7164_irq_dequeue(dev);
520 }
521 
522 static void saa7164_buffer_deliver(struct saa7164_buffer *buf)
523 {
524         struct saa7164_port *port = buf->port;
525 
526         /* Feed the transport payload into the kernel demux */
527         dvb_dmx_swfilter_packets(&port->dvb.demux, (u8 *)buf->cpu,
528                 SAA7164_TS_NUMBER_OF_LINES);
529 
530 }
531 
532 static irqreturn_t saa7164_irq_vbi(struct saa7164_port *port)
533 {
534         struct saa7164_dev *dev = port->dev;
535 
536         /* Store old time */
537         port->last_irq_msecs_diff = port->last_irq_msecs;
538 
539         /* Collect new stats */
540         port->last_irq_msecs = jiffies_to_msecs(jiffies);
541 
542         /* Calculate stats */
543         port->last_irq_msecs_diff = port->last_irq_msecs -
544                 port->last_irq_msecs_diff;
545 
546         saa7164_histogram_update(&port->irq_interval,
547                 port->last_irq_msecs_diff);
548 
549         dprintk(DBGLVL_IRQ, "%s() %Ldms elapsed\n", __func__,
550                 port->last_irq_msecs_diff);
551 
552         /* Tis calls the vbi irq handler */
553         schedule_work(&port->workenc);
554         return 0;
555 }
556 
557 static irqreturn_t saa7164_irq_encoder(struct saa7164_port *port)
558 {
559         struct saa7164_dev *dev = port->dev;
560 
561         /* Store old time */
562         port->last_irq_msecs_diff = port->last_irq_msecs;
563 
564         /* Collect new stats */
565         port->last_irq_msecs = jiffies_to_msecs(jiffies);
566 
567         /* Calculate stats */
568         port->last_irq_msecs_diff = port->last_irq_msecs -
569                 port->last_irq_msecs_diff;
570 
571         saa7164_histogram_update(&port->irq_interval,
572                 port->last_irq_msecs_diff);
573 
574         dprintk(DBGLVL_IRQ, "%s() %Ldms elapsed\n", __func__,
575                 port->last_irq_msecs_diff);
576 
577         schedule_work(&port->workenc);
578         return 0;
579 }
580 
581 static irqreturn_t saa7164_irq_ts(struct saa7164_port *port)
582 {
583         struct saa7164_dev *dev = port->dev;
584         struct saa7164_buffer *buf;
585         struct list_head *c, *n;
586         int wp, i = 0, rp;
587 
588         /* Find the current write point from the hardware */
589         wp = saa7164_readl(port->bufcounter);
590         if (wp > (port->hwcfg.buffercount - 1))
591                 BUG();
592 
593         /* Find the previous buffer to the current write point */
594         if (wp == 0)
595                 rp = (port->hwcfg.buffercount - 1);
596         else
597                 rp = wp - 1;
598 
599         /* Lookup the WP in the buffer list */
600         /* TODO: turn this into a worker thread */
601         list_for_each_safe(c, n, &port->dmaqueue.list) {
602                 buf = list_entry(c, struct saa7164_buffer, list);
603                 if (i++ > port->hwcfg.buffercount)
604                         BUG();
605 
606                 if (buf->idx == rp) {
607                         /* Found the buffer, deal with it */
608                         dprintk(DBGLVL_IRQ, "%s() wp: %d processing: %d\n",
609                                 __func__, wp, rp);
610                         saa7164_buffer_deliver(buf);
611                         break;
612                 }
613 
614         }
615         return 0;
616 }
617 
618 /* Primary IRQ handler and dispatch mechanism */
619 static irqreturn_t saa7164_irq(int irq, void *dev_id)
620 {
621         struct saa7164_dev *dev = dev_id;
622         struct saa7164_port *porta = &dev->ports[SAA7164_PORT_TS1];
623         struct saa7164_port *portb = &dev->ports[SAA7164_PORT_TS2];
624         struct saa7164_port *portc = &dev->ports[SAA7164_PORT_ENC1];
625         struct saa7164_port *portd = &dev->ports[SAA7164_PORT_ENC2];
626         struct saa7164_port *porte = &dev->ports[SAA7164_PORT_VBI1];
627         struct saa7164_port *portf = &dev->ports[SAA7164_PORT_VBI2];
628 
629         u32 intid, intstat[INT_SIZE/4];
630         int i, handled = 0, bit;
631 
632         if (dev == NULL) {
633                 printk(KERN_ERR "%s() No device specified\n", __func__);
634                 handled = 0;
635                 goto out;
636         }
637 
638         /* Check that the hardware is accessible. If the status bytes are
639          * 0xFF then the device is not accessible, the the IRQ belongs
640          * to another driver.
641          * 4 x u32 interrupt registers.
642          */
643         for (i = 0; i < INT_SIZE/4; i++) {
644 
645                 /* TODO: Convert into saa7164_readl() */
646                 /* Read the 4 hardware interrupt registers */
647                 intstat[i] = saa7164_readl(dev->int_status + (i * 4));
648 
649                 if (intstat[i])
650                         handled = 1;
651         }
652         if (handled == 0)
653                 goto out;
654 
655         /* For each of the HW interrupt registers */
656         for (i = 0; i < INT_SIZE/4; i++) {
657 
658                 if (intstat[i]) {
659                         /* Each function of the board has it's own interruptid.
660                          * Find the function that triggered then call
661                          * it's handler.
662                          */
663                         for (bit = 0; bit < 32; bit++) {
664 
665                                 if (((intstat[i] >> bit) & 0x00000001) == 0)
666                                         continue;
667 
668                                 /* Calculate the interrupt id (0x00 to 0x7f) */
669 
670                                 intid = (i * 32) + bit;
671                                 if (intid == dev->intfdesc.bInterruptId) {
672                                         /* A response to an cmd/api call */
673                                         schedule_work(&dev->workcmd);
674                                 } else if (intid == porta->hwcfg.interruptid) {
675 
676                                         /* Transport path 1 */
677                                         saa7164_irq_ts(porta);
678 
679                                 } else if (intid == portb->hwcfg.interruptid) {
680 
681                                         /* Transport path 2 */
682                                         saa7164_irq_ts(portb);
683 
684                                 } else if (intid == portc->hwcfg.interruptid) {
685 
686                                         /* Encoder path 1 */
687                                         saa7164_irq_encoder(portc);
688 
689                                 } else if (intid == portd->hwcfg.interruptid) {
690 
691                                         /* Encoder path 2 */
692                                         saa7164_irq_encoder(portd);
693 
694                                 } else if (intid == porte->hwcfg.interruptid) {
695 
696                                         /* VBI path 1 */
697                                         saa7164_irq_vbi(porte);
698 
699                                 } else if (intid == portf->hwcfg.interruptid) {
700 
701                                         /* VBI path 2 */
702                                         saa7164_irq_vbi(portf);
703 
704                                 } else {
705                                         /* Find the function */
706                                         dprintk(DBGLVL_IRQ,
707                                                 "%s() unhandled interrupt "
708                                                 "reg 0x%x bit 0x%x "
709                                                 "intid = 0x%x\n",
710                                                 __func__, i, bit, intid);
711                                 }
712                         }
713 
714                         /* Ack it */
715                         saa7164_writel(dev->int_ack + (i * 4), intstat[i]);
716 
717                 }
718         }
719 out:
720         return IRQ_RETVAL(handled);
721 }
722 
723 void saa7164_getfirmwarestatus(struct saa7164_dev *dev)
724 {
725         struct saa7164_fw_status *s = &dev->fw_status;
726 
727         dev->fw_status.status = saa7164_readl(SAA_DEVICE_SYSINIT_STATUS);
728         dev->fw_status.mode = saa7164_readl(SAA_DEVICE_SYSINIT_MODE);
729         dev->fw_status.spec = saa7164_readl(SAA_DEVICE_SYSINIT_SPEC);
730         dev->fw_status.inst = saa7164_readl(SAA_DEVICE_SYSINIT_INST);
731         dev->fw_status.cpuload = saa7164_readl(SAA_DEVICE_SYSINIT_CPULOAD);
732         dev->fw_status.remainheap =
733                 saa7164_readl(SAA_DEVICE_SYSINIT_REMAINHEAP);
734 
735         dprintk(1, "Firmware status:\n");
736         dprintk(1, " .status     = 0x%08x\n", s->status);
737         dprintk(1, " .mode       = 0x%08x\n", s->mode);
738         dprintk(1, " .spec       = 0x%08x\n", s->spec);
739         dprintk(1, " .inst       = 0x%08x\n", s->inst);
740         dprintk(1, " .cpuload    = 0x%08x\n", s->cpuload);
741         dprintk(1, " .remainheap = 0x%08x\n", s->remainheap);
742 }
743 
744 u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev)
745 {
746         u32 reg;
747 
748         reg = saa7164_readl(SAA_DEVICE_VERSION);
749         dprintk(1, "Device running firmware version %d.%d.%d.%d (0x%x)\n",
750                 (reg & 0x0000fc00) >> 10,
751                 (reg & 0x000003e0) >> 5,
752                 (reg & 0x0000001f),
753                 (reg & 0xffff0000) >> 16,
754                 reg);
755 
756         return reg;
757 }
758 
759 /* TODO: Debugging func, remove */
760 void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr)
761 {
762         int i;
763 
764         dprintk(1, "--------------------> "
765                 "00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
766 
767         for (i = 0; i < 0x100; i += 16)
768                 dprintk(1, "region0[0x%08x] = "
769                         "%02x %02x %02x %02x %02x %02x %02x %02x"
770                         " %02x %02x %02x %02x %02x %02x %02x %02x\n", i,
771                         (u8)saa7164_readb(addr + i + 0),
772                         (u8)saa7164_readb(addr + i + 1),
773                         (u8)saa7164_readb(addr + i + 2),
774                         (u8)saa7164_readb(addr + i + 3),
775                         (u8)saa7164_readb(addr + i + 4),
776                         (u8)saa7164_readb(addr + i + 5),
777                         (u8)saa7164_readb(addr + i + 6),
778                         (u8)saa7164_readb(addr + i + 7),
779                         (u8)saa7164_readb(addr + i + 8),
780                         (u8)saa7164_readb(addr + i + 9),
781                         (u8)saa7164_readb(addr + i + 10),
782                         (u8)saa7164_readb(addr + i + 11),
783                         (u8)saa7164_readb(addr + i + 12),
784                         (u8)saa7164_readb(addr + i + 13),
785                         (u8)saa7164_readb(addr + i + 14),
786                         (u8)saa7164_readb(addr + i + 15)
787                         );
788 }
789 
790 static void saa7164_dump_hwdesc(struct saa7164_dev *dev)
791 {
792         dprintk(1, "@0x%p hwdesc sizeof(struct tmComResHWDescr) = %d bytes\n",
793                 &dev->hwdesc, (u32)sizeof(struct tmComResHWDescr));
794 
795         dprintk(1, " .bLength = 0x%x\n", dev->hwdesc.bLength);
796         dprintk(1, " .bDescriptorType = 0x%x\n", dev->hwdesc.bDescriptorType);
797         dprintk(1, " .bDescriptorSubtype = 0x%x\n",
798                 dev->hwdesc.bDescriptorSubtype);
799 
800         dprintk(1, " .bcdSpecVersion = 0x%x\n", dev->hwdesc.bcdSpecVersion);
801         dprintk(1, " .dwClockFrequency = 0x%x\n", dev->hwdesc.dwClockFrequency);
802         dprintk(1, " .dwClockUpdateRes = 0x%x\n", dev->hwdesc.dwClockUpdateRes);
803         dprintk(1, " .bCapabilities = 0x%x\n", dev->hwdesc.bCapabilities);
804         dprintk(1, " .dwDeviceRegistersLocation = 0x%x\n",
805                 dev->hwdesc.dwDeviceRegistersLocation);
806 
807         dprintk(1, " .dwHostMemoryRegion = 0x%x\n",
808                 dev->hwdesc.dwHostMemoryRegion);
809 
810         dprintk(1, " .dwHostMemoryRegionSize = 0x%x\n",
811                 dev->hwdesc.dwHostMemoryRegionSize);
812 
813         dprintk(1, " .dwHostHibernatMemRegion = 0x%x\n",
814                 dev->hwdesc.dwHostHibernatMemRegion);
815 
816         dprintk(1, " .dwHostHibernatMemRegionSize = 0x%x\n",
817                 dev->hwdesc.dwHostHibernatMemRegionSize);
818 }
819 
820 static void saa7164_dump_intfdesc(struct saa7164_dev *dev)
821 {
822         dprintk(1, "@0x%p intfdesc "
823                 "sizeof(struct tmComResInterfaceDescr) = %d bytes\n",
824                 &dev->intfdesc, (u32)sizeof(struct tmComResInterfaceDescr));
825 
826         dprintk(1, " .bLength = 0x%x\n", dev->intfdesc.bLength);
827         dprintk(1, " .bDescriptorType = 0x%x\n", dev->intfdesc.bDescriptorType);
828         dprintk(1, " .bDescriptorSubtype = 0x%x\n",
829                 dev->intfdesc.bDescriptorSubtype);
830 
831         dprintk(1, " .bFlags = 0x%x\n", dev->intfdesc.bFlags);
832         dprintk(1, " .bInterfaceType = 0x%x\n", dev->intfdesc.bInterfaceType);
833         dprintk(1, " .bInterfaceId = 0x%x\n", dev->intfdesc.bInterfaceId);
834         dprintk(1, " .bBaseInterface = 0x%x\n", dev->intfdesc.bBaseInterface);
835         dprintk(1, " .bInterruptId = 0x%x\n", dev->intfdesc.bInterruptId);
836         dprintk(1, " .bDebugInterruptId = 0x%x\n",
837                 dev->intfdesc.bDebugInterruptId);
838 
839         dprintk(1, " .BARLocation = 0x%x\n", dev->intfdesc.BARLocation);
840 }
841 
842 static void saa7164_dump_busdesc(struct saa7164_dev *dev)
843 {
844         dprintk(1, "@0x%p busdesc sizeof(struct tmComResBusDescr) = %d bytes\n",
845                 &dev->busdesc, (u32)sizeof(struct tmComResBusDescr));
846 
847         dprintk(1, " .CommandRing   = 0x%016Lx\n", dev->busdesc.CommandRing);
848         dprintk(1, " .ResponseRing  = 0x%016Lx\n", dev->busdesc.ResponseRing);
849         dprintk(1, " .CommandWrite  = 0x%x\n", dev->busdesc.CommandWrite);
850         dprintk(1, " .CommandRead   = 0x%x\n", dev->busdesc.CommandRead);
851         dprintk(1, " .ResponseWrite = 0x%x\n", dev->busdesc.ResponseWrite);
852         dprintk(1, " .ResponseRead  = 0x%x\n", dev->busdesc.ResponseRead);
853 }
854 
855 /* Much of the hardware configuration and PCI registers are configured
856  * dynamically depending on firmware. We have to cache some initial
857  * structures then use these to locate other important structures
858  * from PCI space.
859  */
860 static void saa7164_get_descriptors(struct saa7164_dev *dev)
861 {
862         memcpy_fromio(&dev->hwdesc, dev->bmmio, sizeof(struct tmComResHWDescr));
863         memcpy_fromio(&dev->intfdesc, dev->bmmio + sizeof(struct tmComResHWDescr),
864                 sizeof(struct tmComResInterfaceDescr));
865         memcpy_fromio(&dev->busdesc, dev->bmmio + dev->intfdesc.BARLocation,
866                 sizeof(struct tmComResBusDescr));
867 
868         if (dev->hwdesc.bLength != sizeof(struct tmComResHWDescr)) {
869                 printk(KERN_ERR "Structure struct tmComResHWDescr is mangled\n");
870                 printk(KERN_ERR "Need %x got %d\n", dev->hwdesc.bLength,
871                         (u32)sizeof(struct tmComResHWDescr));
872         } else
873                 saa7164_dump_hwdesc(dev);
874 
875         if (dev->intfdesc.bLength != sizeof(struct tmComResInterfaceDescr)) {
876                 printk(KERN_ERR "struct struct tmComResInterfaceDescr is mangled\n");
877                 printk(KERN_ERR "Need %x got %d\n", dev->intfdesc.bLength,
878                         (u32)sizeof(struct tmComResInterfaceDescr));
879         } else
880                 saa7164_dump_intfdesc(dev);
881 
882         saa7164_dump_busdesc(dev);
883 }
884 
885 static int saa7164_pci_quirks(struct saa7164_dev *dev)
886 {
887         return 0;
888 }
889 
890 static int get_resources(struct saa7164_dev *dev)
891 {
892         if (request_mem_region(pci_resource_start(dev->pci, 0),
893                 pci_resource_len(dev->pci, 0), dev->name)) {
894 
895                 if (request_mem_region(pci_resource_start(dev->pci, 2),
896                         pci_resource_len(dev->pci, 2), dev->name))
897                         return 0;
898         }
899 
900         printk(KERN_ERR "%s: can't get MMIO memory @ 0x%llx or 0x%llx\n",
901                 dev->name,
902                 (u64)pci_resource_start(dev->pci, 0),
903                 (u64)pci_resource_start(dev->pci, 2));
904 
905         return -EBUSY;
906 }
907 
908 static int saa7164_port_init(struct saa7164_dev *dev, int portnr)
909 {
910         struct saa7164_port *port = NULL;
911 
912         if ((portnr < 0) || (portnr >= SAA7164_MAX_PORTS))
913                 BUG();
914 
915         port = &dev->ports[portnr];
916 
917         port->dev = dev;
918         port->nr = portnr;
919 
920         if ((portnr == SAA7164_PORT_TS1) || (portnr == SAA7164_PORT_TS2))
921                 port->type = SAA7164_MPEG_DVB;
922         else
923         if ((portnr == SAA7164_PORT_ENC1) || (portnr == SAA7164_PORT_ENC2)) {
924                 port->type = SAA7164_MPEG_ENCODER;
925 
926                 /* We need a deferred interrupt handler for cmd handling */
927                 INIT_WORK(&port->workenc, saa7164_work_enchandler);
928         } else if ((portnr == SAA7164_PORT_VBI1) || (portnr == SAA7164_PORT_VBI2)) {
929                 port->type = SAA7164_MPEG_VBI;
930 
931                 /* We need a deferred interrupt handler for cmd handling */
932                 INIT_WORK(&port->workenc, saa7164_work_vbihandler);
933         } else
934                 BUG();
935 
936         /* Init all the critical resources */
937         mutex_init(&port->dvb.lock);
938         INIT_LIST_HEAD(&port->dmaqueue.list);
939         mutex_init(&port->dmaqueue_lock);
940 
941         INIT_LIST_HEAD(&port->list_buf_used.list);
942         INIT_LIST_HEAD(&port->list_buf_free.list);
943         init_waitqueue_head(&port->wait_read);
944 
945 
946         saa7164_histogram_reset(&port->irq_interval, "irq intervals");
947         saa7164_histogram_reset(&port->svc_interval, "deferred intervals");
948         saa7164_histogram_reset(&port->irq_svc_interval,
949                 "irq to deferred intervals");
950         saa7164_histogram_reset(&port->read_interval,
951                 "encoder/vbi read() intervals");
952         saa7164_histogram_reset(&port->poll_interval,
953                 "encoder/vbi poll() intervals");
954 
955         return 0;
956 }
957 
958 static int saa7164_dev_setup(struct saa7164_dev *dev)
959 {
960         int i;
961 
962         mutex_init(&dev->lock);
963         atomic_inc(&dev->refcount);
964         dev->nr = saa7164_devcount++;
965 
966         snprintf(dev->name, sizeof(dev->name), "saa7164[%d]", dev->nr);
967 
968         mutex_lock(&devlist);
969         list_add_tail(&dev->devlist, &saa7164_devlist);
970         mutex_unlock(&devlist);
971 
972         /* board config */
973         dev->board = UNSET;
974         if (card[dev->nr] < saa7164_bcount)
975                 dev->board = card[dev->nr];
976 
977         for (i = 0; UNSET == dev->board  &&  i < saa7164_idcount; i++)
978                 if (dev->pci->subsystem_vendor == saa7164_subids[i].subvendor &&
979                         dev->pci->subsystem_device ==
980                                 saa7164_subids[i].subdevice)
981                                 dev->board = saa7164_subids[i].card;
982 
983         if (UNSET == dev->board) {
984                 dev->board = SAA7164_BOARD_UNKNOWN;
985                 saa7164_card_list(dev);
986         }
987 
988         dev->pci_bus  = dev->pci->bus->number;
989         dev->pci_slot = PCI_SLOT(dev->pci->devfn);
990 
991         /* I2C Defaults / setup */
992         dev->i2c_bus[0].dev = dev;
993         dev->i2c_bus[0].nr = 0;
994         dev->i2c_bus[1].dev = dev;
995         dev->i2c_bus[1].nr = 1;
996         dev->i2c_bus[2].dev = dev;
997         dev->i2c_bus[2].nr = 2;
998 
999         /* Transport + Encoder ports 1, 2, 3, 4 - Defaults / setup */
1000         saa7164_port_init(dev, SAA7164_PORT_TS1);
1001         saa7164_port_init(dev, SAA7164_PORT_TS2);
1002         saa7164_port_init(dev, SAA7164_PORT_ENC1);
1003         saa7164_port_init(dev, SAA7164_PORT_ENC2);
1004         saa7164_port_init(dev, SAA7164_PORT_VBI1);
1005         saa7164_port_init(dev, SAA7164_PORT_VBI2);
1006 
1007         if (get_resources(dev) < 0) {
1008                 printk(KERN_ERR "CORE %s No more PCIe resources for "
1009                        "subsystem: %04x:%04x\n",
1010                        dev->name, dev->pci->subsystem_vendor,
1011                        dev->pci->subsystem_device);
1012 
1013                 saa7164_devcount--;
1014                 return -ENODEV;
1015         }
1016 
1017         /* PCI/e allocations */
1018         dev->lmmio = ioremap(pci_resource_start(dev->pci, 0),
1019                              pci_resource_len(dev->pci, 0));
1020 
1021         dev->lmmio2 = ioremap(pci_resource_start(dev->pci, 2),
1022                              pci_resource_len(dev->pci, 2));
1023 
1024         dev->bmmio = (u8 __iomem *)dev->lmmio;
1025         dev->bmmio2 = (u8 __iomem *)dev->lmmio2;
1026 
1027         /* Inerrupt and ack register locations offset of bmmio */
1028         dev->int_status = 0x183000 + 0xf80;
1029         dev->int_ack = 0x183000 + 0xf90;
1030 
1031         printk(KERN_INFO
1032                 "CORE %s: subsystem: %04x:%04x, board: %s [card=%d,%s]\n",
1033                dev->name, dev->pci->subsystem_vendor,
1034                dev->pci->subsystem_device, saa7164_boards[dev->board].name,
1035                dev->board, card[dev->nr] == dev->board ?
1036                "insmod option" : "autodetected");
1037 
1038         saa7164_pci_quirks(dev);
1039 
1040         return 0;
1041 }
1042 
1043 static void saa7164_dev_unregister(struct saa7164_dev *dev)
1044 {
1045         dprintk(1, "%s()\n", __func__);
1046 
1047         release_mem_region(pci_resource_start(dev->pci, 0),
1048                 pci_resource_len(dev->pci, 0));
1049 
1050         release_mem_region(pci_resource_start(dev->pci, 2),
1051                 pci_resource_len(dev->pci, 2));
1052 
1053         if (!atomic_dec_and_test(&dev->refcount))
1054                 return;
1055 
1056         iounmap(dev->lmmio);
1057         iounmap(dev->lmmio2);
1058 
1059         return;
1060 }
1061 
1062 #ifdef CONFIG_PROC_FS
1063 static int saa7164_proc_show(struct seq_file *m, void *v)
1064 {
1065         struct saa7164_dev *dev;
1066         struct tmComResBusInfo *b;
1067         struct list_head *list;
1068         int i, c;
1069 
1070         if (saa7164_devcount == 0)
1071                 return 0;
1072 
1073         list_for_each(list, &saa7164_devlist) {
1074                 dev = list_entry(list, struct saa7164_dev, devlist);
1075                 seq_printf(m, "%s = %p\n", dev->name, dev);
1076 
1077                 /* Lock the bus from any other access */
1078                 b = &dev->bus;
1079                 mutex_lock(&b->lock);
1080 
1081                 seq_printf(m, " .m_pdwSetWritePos = 0x%x (0x%08x)\n",
1082                         b->m_dwSetReadPos, saa7164_readl(b->m_dwSetReadPos));
1083 
1084                 seq_printf(m, " .m_pdwSetReadPos  = 0x%x (0x%08x)\n",
1085                         b->m_dwSetWritePos, saa7164_readl(b->m_dwSetWritePos));
1086 
1087                 seq_printf(m, " .m_pdwGetWritePos = 0x%x (0x%08x)\n",
1088                         b->m_dwGetReadPos, saa7164_readl(b->m_dwGetReadPos));
1089 
1090                 seq_printf(m, " .m_pdwGetReadPos  = 0x%x (0x%08x)\n",
1091                         b->m_dwGetWritePos, saa7164_readl(b->m_dwGetWritePos));
1092                 c = 0;
1093                 seq_printf(m, "\n  Set Ring:\n");
1094                 seq_printf(m, "\n addr  00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
1095                 for (i = 0; i < b->m_dwSizeSetRing; i++) {
1096                         if (c == 0)
1097                                 seq_printf(m, " %04x:", i);
1098 
1099                         seq_printf(m, " %02x", *(b->m_pdwSetRing + i));
1100 
1101                         if (++c == 16) {
1102                                 seq_printf(m, "\n");
1103                                 c = 0;
1104                         }
1105                 }
1106 
1107                 c = 0;
1108                 seq_printf(m, "\n  Get Ring:\n");
1109                 seq_printf(m, "\n addr  00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
1110                 for (i = 0; i < b->m_dwSizeGetRing; i++) {
1111                         if (c == 0)
1112                                 seq_printf(m, " %04x:", i);
1113 
1114                         seq_printf(m, " %02x", *(b->m_pdwGetRing + i));
1115 
1116                         if (++c == 16) {
1117                                 seq_printf(m, "\n");
1118                                 c = 0;
1119                         }
1120                 }
1121 
1122                 mutex_unlock(&b->lock);
1123 
1124         }
1125 
1126         return 0;
1127 }
1128 
1129 static int saa7164_proc_open(struct inode *inode, struct file *filp)
1130 {
1131         return single_open(filp, saa7164_proc_show, NULL);
1132 }
1133 
1134 static const struct file_operations saa7164_proc_fops = {
1135         .open           = saa7164_proc_open,
1136         .read           = seq_read,
1137         .llseek         = seq_lseek,
1138         .release        = single_release,
1139 };
1140 
1141 static int saa7164_proc_create(void)
1142 {
1143         struct proc_dir_entry *pe;
1144 
1145         pe = proc_create("saa7164", S_IRUGO, NULL, &saa7164_proc_fops);
1146         if (!pe)
1147                 return -ENOMEM;
1148 
1149         return 0;
1150 }
1151 #endif
1152 
1153 static int saa7164_thread_function(void *data)
1154 {
1155         struct saa7164_dev *dev = data;
1156         struct tmFwInfoStruct fwinfo;
1157         u64 last_poll_time = 0;
1158 
1159         dprintk(DBGLVL_THR, "thread started\n");
1160 
1161         set_freezable();
1162 
1163         while (1) {
1164                 msleep_interruptible(100);
1165                 if (kthread_should_stop())
1166                         break;
1167                 try_to_freeze();
1168 
1169                 dprintk(DBGLVL_THR, "thread running\n");
1170 
1171                 /* Dump the firmware debug message to console */
1172                 /* Polling this costs us 1-2% of the arm CPU */
1173                 /* convert this into a respnde to interrupt 0x7a */
1174                 saa7164_api_collect_debug(dev);
1175 
1176                 /* Monitor CPU load every 1 second */
1177                 if ((last_poll_time + 1000 /* ms */) < jiffies_to_msecs(jiffies)) {
1178                         saa7164_api_get_load_info(dev, &fwinfo);
1179                         last_poll_time = jiffies_to_msecs(jiffies);
1180                 }
1181 
1182         }
1183 
1184         dprintk(DBGLVL_THR, "thread exiting\n");
1185         return 0;
1186 }
1187 
1188 static int saa7164_initdev(struct pci_dev *pci_dev,
1189                            const struct pci_device_id *pci_id)
1190 {
1191         struct saa7164_dev *dev;
1192         int err, i;
1193         u32 version;
1194 
1195         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1196         if (NULL == dev)
1197                 return -ENOMEM;
1198 
1199         err = v4l2_device_register(&pci_dev->dev, &dev->v4l2_dev);
1200         if (err < 0) {
1201                 dev_err(&pci_dev->dev, "v4l2_device_register failed\n");
1202                 goto fail_free;
1203         }
1204 
1205         /* pci init */
1206         dev->pci = pci_dev;
1207         if (pci_enable_device(pci_dev)) {
1208                 err = -EIO;
1209                 goto fail_free;
1210         }
1211 
1212         if (saa7164_dev_setup(dev) < 0) {
1213                 err = -EINVAL;
1214                 goto fail_free;
1215         }
1216 
1217         /* print pci info */
1218         dev->pci_rev = pci_dev->revision;
1219         pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER,  &dev->pci_lat);
1220         printk(KERN_INFO "%s/0: found at %s, rev: %d, irq: %d, "
1221                "latency: %d, mmio: 0x%llx\n", dev->name,
1222                pci_name(pci_dev), dev->pci_rev, pci_dev->irq,
1223                dev->pci_lat,
1224                 (unsigned long long)pci_resource_start(pci_dev, 0));
1225 
1226         pci_set_master(pci_dev);
1227         /* TODO */
1228         if (!pci_dma_supported(pci_dev, 0xffffffff)) {
1229                 printk("%s/0: Oops: no 32bit PCI DMA ???\n", dev->name);
1230                 err = -EIO;
1231                 goto fail_irq;
1232         }
1233 
1234         err = request_irq(pci_dev->irq, saa7164_irq,
1235                 IRQF_SHARED, dev->name, dev);
1236         if (err < 0) {
1237                 printk(KERN_ERR "%s: can't get IRQ %d\n", dev->name,
1238                         pci_dev->irq);
1239                 err = -EIO;
1240                 goto fail_irq;
1241         }
1242 
1243         pci_set_drvdata(pci_dev, dev);
1244 
1245         /* Init the internal command list */
1246         for (i = 0; i < SAA_CMD_MAX_MSG_UNITS; i++) {
1247                 dev->cmds[i].seqno = i;
1248                 dev->cmds[i].inuse = 0;
1249                 mutex_init(&dev->cmds[i].lock);
1250                 init_waitqueue_head(&dev->cmds[i].wait);
1251         }
1252 
1253         /* We need a deferred interrupt handler for cmd handling */
1254         INIT_WORK(&dev->workcmd, saa7164_work_cmdhandler);
1255 
1256         /* Only load the firmware if we know the board */
1257         if (dev->board != SAA7164_BOARD_UNKNOWN) {
1258 
1259                 err = saa7164_downloadfirmware(dev);
1260                 if (err < 0) {
1261                         printk(KERN_ERR
1262                                 "Failed to boot firmware, no features "
1263                                 "registered\n");
1264                         goto fail_fw;
1265                 }
1266 
1267                 saa7164_get_descriptors(dev);
1268                 saa7164_dumpregs(dev, 0);
1269                 saa7164_getcurrentfirmwareversion(dev);
1270                 saa7164_getfirmwarestatus(dev);
1271                 err = saa7164_bus_setup(dev);
1272                 if (err < 0)
1273                         printk(KERN_ERR
1274                                 "Failed to setup the bus, will continue\n");
1275                 saa7164_bus_dump(dev);
1276 
1277                 /* Ping the running firmware via the command bus and get the
1278                  * firmware version, this checks the bus is running OK.
1279                  */
1280                 version = 0;
1281                 if (saa7164_api_get_fw_version(dev, &version) == SAA_OK)
1282                         dprintk(1, "Bus is operating correctly using "
1283                                 "version %d.%d.%d.%d (0x%x)\n",
1284                                 (version & 0x0000fc00) >> 10,
1285                                 (version & 0x000003e0) >> 5,
1286                                 (version & 0x0000001f),
1287                                 (version & 0xffff0000) >> 16,
1288                                 version);
1289                 else
1290                         printk(KERN_ERR
1291                                 "Failed to communicate with the firmware\n");
1292 
1293                 /* Bring up the I2C buses */
1294                 saa7164_i2c_register(&dev->i2c_bus[0]);
1295                 saa7164_i2c_register(&dev->i2c_bus[1]);
1296                 saa7164_i2c_register(&dev->i2c_bus[2]);
1297                 saa7164_gpio_setup(dev);
1298                 saa7164_card_setup(dev);
1299 
1300                 /* Parse the dynamic device configuration, find various
1301                  * media endpoints (MPEG, WMV, PS, TS) and cache their
1302                  * configuration details into the driver, so we can
1303                  * reference them later during simething_register() func,
1304                  * interrupt handlers, deferred work handlers etc.
1305                  */
1306                 saa7164_api_enum_subdevs(dev);
1307 
1308                 /* Begin to create the video sub-systems and register funcs */
1309                 if (saa7164_boards[dev->board].porta == SAA7164_MPEG_DVB) {
1310                         if (saa7164_dvb_register(&dev->ports[SAA7164_PORT_TS1]) < 0) {
1311                                 printk(KERN_ERR "%s() Failed to register "
1312                                         "dvb adapters on porta\n",
1313                                         __func__);
1314                         }
1315                 }
1316 
1317                 if (saa7164_boards[dev->board].portb == SAA7164_MPEG_DVB) {
1318                         if (saa7164_dvb_register(&dev->ports[SAA7164_PORT_TS2]) < 0) {
1319                                 printk(KERN_ERR"%s() Failed to register "
1320                                         "dvb adapters on portb\n",
1321                                         __func__);
1322                         }
1323                 }
1324 
1325                 if (saa7164_boards[dev->board].portc == SAA7164_MPEG_ENCODER) {
1326                         if (saa7164_encoder_register(&dev->ports[SAA7164_PORT_ENC1]) < 0) {
1327                                 printk(KERN_ERR"%s() Failed to register "
1328                                         "mpeg encoder\n", __func__);
1329                         }
1330                 }
1331 
1332                 if (saa7164_boards[dev->board].portd == SAA7164_MPEG_ENCODER) {
1333                         if (saa7164_encoder_register(&dev->ports[SAA7164_PORT_ENC2]) < 0) {
1334                                 printk(KERN_ERR"%s() Failed to register "
1335                                         "mpeg encoder\n", __func__);
1336                         }
1337                 }
1338 
1339                 if (saa7164_boards[dev->board].porte == SAA7164_MPEG_VBI) {
1340                         if (saa7164_vbi_register(&dev->ports[SAA7164_PORT_VBI1]) < 0) {
1341                                 printk(KERN_ERR"%s() Failed to register "
1342                                         "vbi device\n", __func__);
1343                         }
1344                 }
1345 
1346                 if (saa7164_boards[dev->board].portf == SAA7164_MPEG_VBI) {
1347                         if (saa7164_vbi_register(&dev->ports[SAA7164_PORT_VBI2]) < 0) {
1348                                 printk(KERN_ERR"%s() Failed to register "
1349                                         "vbi device\n", __func__);
1350                         }
1351                 }
1352                 saa7164_api_set_debug(dev, fw_debug);
1353 
1354                 if (fw_debug) {
1355                         dev->kthread = kthread_run(saa7164_thread_function, dev,
1356                                 "saa7164 debug");
1357                         if (IS_ERR(dev->kthread)) {
1358                                 dev->kthread = NULL;
1359                                 printk(KERN_ERR "%s() Failed to create "
1360                                         "debug kernel thread\n", __func__);
1361                         }
1362                 }
1363 
1364         } /* != BOARD_UNKNOWN */
1365         else
1366                 printk(KERN_ERR "%s() Unsupported board detected, "
1367                         "registering without firmware\n", __func__);
1368 
1369         dprintk(1, "%s() parameter debug = %d\n", __func__, saa_debug);
1370         dprintk(1, "%s() parameter waitsecs = %d\n", __func__, waitsecs);
1371 
1372 fail_fw:
1373         return 0;
1374 
1375 fail_irq:
1376         saa7164_dev_unregister(dev);
1377 fail_free:
1378         v4l2_device_unregister(&dev->v4l2_dev);
1379         kfree(dev);
1380         return err;
1381 }
1382 
1383 static void saa7164_shutdown(struct saa7164_dev *dev)
1384 {
1385         dprintk(1, "%s()\n", __func__);
1386 }
1387 
1388 static void saa7164_finidev(struct pci_dev *pci_dev)
1389 {
1390         struct saa7164_dev *dev = pci_get_drvdata(pci_dev);
1391 
1392         if (dev->board != SAA7164_BOARD_UNKNOWN) {
1393                 if (fw_debug && dev->kthread) {
1394                         kthread_stop(dev->kthread);
1395                         dev->kthread = NULL;
1396                 }
1397                 if (dev->firmwareloaded)
1398                         saa7164_api_set_debug(dev, 0x00);
1399         }
1400 
1401         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1402                 &dev->ports[SAA7164_PORT_ENC1].irq_interval);
1403         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1404                 &dev->ports[SAA7164_PORT_ENC1].svc_interval);
1405         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1406                 &dev->ports[SAA7164_PORT_ENC1].irq_svc_interval);
1407         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1408                 &dev->ports[SAA7164_PORT_ENC1].read_interval);
1409         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1410                 &dev->ports[SAA7164_PORT_ENC1].poll_interval);
1411         saa7164_histogram_print(&dev->ports[SAA7164_PORT_VBI1],
1412                 &dev->ports[SAA7164_PORT_VBI1].read_interval);
1413         saa7164_histogram_print(&dev->ports[SAA7164_PORT_VBI2],
1414                 &dev->ports[SAA7164_PORT_VBI2].poll_interval);
1415 
1416         saa7164_shutdown(dev);
1417 
1418         if (saa7164_boards[dev->board].porta == SAA7164_MPEG_DVB)
1419                 saa7164_dvb_unregister(&dev->ports[SAA7164_PORT_TS1]);
1420 
1421         if (saa7164_boards[dev->board].portb == SAA7164_MPEG_DVB)
1422                 saa7164_dvb_unregister(&dev->ports[SAA7164_PORT_TS2]);
1423 
1424         if (saa7164_boards[dev->board].portc == SAA7164_MPEG_ENCODER)
1425                 saa7164_encoder_unregister(&dev->ports[SAA7164_PORT_ENC1]);
1426 
1427         if (saa7164_boards[dev->board].portd == SAA7164_MPEG_ENCODER)
1428                 saa7164_encoder_unregister(&dev->ports[SAA7164_PORT_ENC2]);
1429 
1430         if (saa7164_boards[dev->board].porte == SAA7164_MPEG_VBI)
1431                 saa7164_vbi_unregister(&dev->ports[SAA7164_PORT_VBI1]);
1432 
1433         if (saa7164_boards[dev->board].portf == SAA7164_MPEG_VBI)
1434                 saa7164_vbi_unregister(&dev->ports[SAA7164_PORT_VBI2]);
1435 
1436         saa7164_i2c_unregister(&dev->i2c_bus[0]);
1437         saa7164_i2c_unregister(&dev->i2c_bus[1]);
1438         saa7164_i2c_unregister(&dev->i2c_bus[2]);
1439 
1440         pci_disable_device(pci_dev);
1441 
1442         /* unregister stuff */
1443         free_irq(pci_dev->irq, dev);
1444 
1445         mutex_lock(&devlist);
1446         list_del(&dev->devlist);
1447         mutex_unlock(&devlist);
1448 
1449         saa7164_dev_unregister(dev);
1450         v4l2_device_unregister(&dev->v4l2_dev);
1451         kfree(dev);
1452 }
1453 
1454 static struct pci_device_id saa7164_pci_tbl[] = {
1455         {
1456                 /* SAA7164 */
1457                 .vendor       = 0x1131,
1458                 .device       = 0x7164,
1459                 .subvendor    = PCI_ANY_ID,
1460                 .subdevice    = PCI_ANY_ID,
1461         }, {
1462                 /* --- end of list --- */
1463         }
1464 };
1465 MODULE_DEVICE_TABLE(pci, saa7164_pci_tbl);
1466 
1467 static struct pci_driver saa7164_pci_driver = {
1468         .name     = "saa7164",
1469         .id_table = saa7164_pci_tbl,
1470         .probe    = saa7164_initdev,
1471         .remove   = saa7164_finidev,
1472         /* TODO */
1473         .suspend  = NULL,
1474         .resume   = NULL,
1475 };
1476 
1477 static int __init saa7164_init(void)
1478 {
1479         printk(KERN_INFO "saa7164 driver loaded\n");
1480 
1481 #ifdef CONFIG_PROC_FS
1482         saa7164_proc_create();
1483 #endif
1484         return pci_register_driver(&saa7164_pci_driver);
1485 }
1486 
1487 static void __exit saa7164_fini(void)
1488 {
1489 #ifdef CONFIG_PROC_FS
1490         remove_proc_entry("saa7164", NULL);
1491 #endif
1492         pci_unregister_driver(&saa7164_pci_driver);
1493 }
1494 
1495 module_init(saa7164_init);
1496 module_exit(saa7164_fini);
1497 
1498 

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