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bt878.c
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1 /*
2  * bt878.c: part of the driver for the Pinnacle PCTV Sat DVB PCI card
3  *
4  * Copyright (C) 2002 Peter Hettkamp <[email protected]>
5  *
6  * large parts based on the bttv driver
7  * Copyright (C) 1996,97,98 Ralph Metzler ([email protected])
8  * & Marcus Metzler ([email protected])
9  * (c) 1999,2000 Gerd Knorr <[email protected]>
10  *
11  * This program is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU General Public License
13  * as published by the Free Software Foundation; either version 2
14  * of the License, or (at your option) any later version.
15  *
16 
17  * This program is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20  * GNU General Public License for more details.
21  *
22 
23  * You should have received a copy of the GNU General Public License
24  * along with this program; if not, write to the Free Software
25  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26  * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
27  *
28  */
29 
30 #include <linux/module.h>
31 #include <linux/kernel.h>
32 #include <linux/pci.h>
33 #include <asm/io.h>
34 #include <linux/ioport.h>
35 #include <asm/pgtable.h>
36 #include <asm/page.h>
37 #include <linux/types.h>
38 #include <linux/interrupt.h>
39 #include <linux/kmod.h>
40 #include <linux/vmalloc.h>
41 #include <linux/init.h>
42 
43 #include "dmxdev.h"
44 #include "dvbdev.h"
45 #include "bt878.h"
46 #include "dst_priv.h"
47 
48 
49 /**************************************/
50 /* Miscellaneous utility definitions */
51 /**************************************/
52 
53 static unsigned int bt878_verbose = 1;
54 static unsigned int bt878_debug;
55 
56 module_param_named(verbose, bt878_verbose, int, 0444);
58  "verbose startup messages, default is 1 (yes)");
59 module_param_named(debug, bt878_debug, int, 0644);
60 MODULE_PARM_DESC(debug, "Turn on/off debugging, default is 0 (off).");
61 
64 
67 
68 #define btwrite(dat,adr) bmtwrite((dat), (bt->bt878_mem+(adr)))
69 #define btread(adr) bmtread(bt->bt878_mem+(adr))
70 
71 #define btand(dat,adr) btwrite((dat) & btread(adr), adr)
72 #define btor(dat,adr) btwrite((dat) | btread(adr), adr)
73 #define btaor(dat,mask,adr) btwrite((dat) | ((mask) & btread(adr)), adr)
74 
75 #if defined(dprintk)
76 #undef dprintk
77 #endif
78 #define dprintk(fmt, arg...) \
79  do { \
80  if (bt878_debug) \
81  printk(KERN_DEBUG fmt, ##arg); \
82  } while (0)
83 
84 static void bt878_mem_free(struct bt878 *bt)
85 {
86  if (bt->buf_cpu) {
88  bt->buf_dma);
89  bt->buf_cpu = NULL;
90  }
91 
92  if (bt->risc_cpu) {
94  bt->risc_dma);
95  bt->risc_cpu = NULL;
96  }
97 }
98 
99 static int bt878_mem_alloc(struct bt878 *bt)
100 {
101  if (!bt->buf_cpu) {
102  bt->buf_size = 128 * 1024;
103 
104  bt->buf_cpu =
106  &bt->buf_dma);
107 
108  if (!bt->buf_cpu)
109  return -ENOMEM;
110 
111  memset(bt->buf_cpu, 0, bt->buf_size);
112  }
113 
114  if (!bt->risc_cpu) {
115  bt->risc_size = PAGE_SIZE;
116  bt->risc_cpu =
118  &bt->risc_dma);
119 
120  if (!bt->risc_cpu) {
121  bt878_mem_free(bt);
122  return -ENOMEM;
123  }
124 
125  memset(bt->risc_cpu, 0, bt->risc_size);
126  }
127 
128  return 0;
129 }
130 
131 /* RISC instructions */
132 #define RISC_WRITE (0x01 << 28)
133 #define RISC_JUMP (0x07 << 28)
134 #define RISC_SYNC (0x08 << 28)
135 
136 /* RISC bits */
137 #define RISC_WR_SOL (1 << 27)
138 #define RISC_WR_EOL (1 << 26)
139 #define RISC_IRQ (1 << 24)
140 #define RISC_STATUS(status) ((((~status) & 0x0F) << 20) | ((status & 0x0F) << 16))
141 #define RISC_SYNC_RESYNC (1 << 15)
142 #define RISC_SYNC_FM1 0x06
143 #define RISC_SYNC_VRO 0x0C
144 
145 #define RISC_FLUSH() bt->risc_pos = 0
146 #define RISC_INSTR(instr) bt->risc_cpu[bt->risc_pos++] = cpu_to_le32(instr)
147 
148 static int bt878_make_risc(struct bt878 *bt)
149 {
150  bt->block_bytes = bt->buf_size >> 4;
151  bt->block_count = 1 << 4;
152  bt->line_bytes = bt->block_bytes;
153  bt->line_count = bt->block_count;
154 
155  while (bt->line_bytes > 4095) {
156  bt->line_bytes >>= 1;
157  bt->line_count <<= 1;
158  }
159 
160  if (bt->line_count > 255) {
161  printk(KERN_ERR "bt878: buffer size error!\n");
162  return -EINVAL;
163  }
164  return 0;
165 }
166 
167 
168 static void bt878_risc_program(struct bt878 *bt, u32 op_sync_orin)
169 {
170  u32 buf_pos = 0;
171  u32 line;
172 
173  RISC_FLUSH();
174  RISC_INSTR(RISC_SYNC | RISC_SYNC_FM1 | op_sync_orin);
175  RISC_INSTR(0);
176 
177  dprintk("bt878: risc len lines %u, bytes per line %u\n",
178  bt->line_count, bt->line_bytes);
179  for (line = 0; line < bt->line_count; line++) {
180  // At the beginning of every block we issue an IRQ with previous (finished) block number set
181  if (!(buf_pos % bt->block_bytes))
183  RISC_IRQ |
184  RISC_STATUS(((buf_pos /
185  bt->block_bytes) +
186  (bt->block_count -
187  1)) %
188  bt->block_count) | bt->
189  line_bytes);
190  else
192  bt->line_bytes);
193  RISC_INSTR(bt->buf_dma + buf_pos);
194  buf_pos += bt->line_bytes;
195  }
196 
197  RISC_INSTR(RISC_SYNC | op_sync_orin | RISC_SYNC_VRO);
198  RISC_INSTR(0);
199 
201  RISC_INSTR(bt->risc_dma);
202 
203  btwrite((bt->line_count << 16) | bt->line_bytes, BT878_APACK_LEN);
204 }
205 
206 /*****************************/
207 /* Start/Stop grabbing funcs */
208 /*****************************/
209 
210 void bt878_start(struct bt878 *bt, u32 controlreg, u32 op_sync_orin,
211  u32 irq_err_ignore)
212 {
213  u32 int_mask;
214 
215  dprintk("bt878 debug: bt878_start (ctl=%8.8x)\n", controlreg);
216  /* complete the writing of the risc dma program now we have
217  * the card specifics
218  */
219  bt878_risc_program(bt, op_sync_orin);
220  controlreg &= ~0x1f;
221  controlreg |= 0x1b;
222 
224 
225  /* original int mask had :
226  * 6 2 8 4 0
227  * 1111 1111 1000 0000 0000
228  * SCERR|OCERR|PABORT|RIPERR|FDSR|FTRGT|FBUS|RISCI
229  * Hacked for DST to:
230  * SCERR | OCERR | FDSR | FTRGT | FBUS | RISCI
231  */
232  int_mask = BT878_ASCERR | BT878_AOCERR | BT878_APABORT |
235 
236 
237  /* ignore pesky bits */
238  int_mask &= ~irq_err_ignore;
239 
240  btwrite(int_mask, BT878_AINT_MASK);
241  btwrite(controlreg, BT878_AGPIO_DMA_CTL);
242 }
243 
244 void bt878_stop(struct bt878 *bt)
245 {
246  u32 stat;
247  int i = 0;
248 
249  dprintk("bt878 debug: bt878_stop\n");
250 
252  btand(~0x13, BT878_AGPIO_DMA_CTL);
253 
254  do {
255  stat = btread(BT878_AINT_STAT);
256  if (!(stat & BT878_ARISC_EN))
257  break;
258  i++;
259  } while (i < 500);
260 
261  dprintk("bt878(%d) debug: bt878_stop, i=%d, stat=0x%8.8x\n",
262  bt->nr, i, stat);
263 }
264 
267 
268 /*****************************/
269 /* Interrupt service routine */
270 /*****************************/
271 
272 static irqreturn_t bt878_irq(int irq, void *dev_id)
273 {
274  u32 stat, astat, mask;
275  int count;
276  struct bt878 *bt;
277 
278  bt = (struct bt878 *) dev_id;
279 
280  count = 0;
281  while (1) {
282  stat = btread(BT878_AINT_STAT);
283  mask = btread(BT878_AINT_MASK);
284  if (!(astat = (stat & mask)))
285  return IRQ_NONE; /* this interrupt is not for me */
286 /* dprintk("bt878(%d) debug: irq count %d, stat 0x%8.8x, mask 0x%8.8x\n",bt->nr,count,stat,mask); */
287  btwrite(astat, BT878_AINT_STAT); /* try to clear interrupt condition */
288 
289 
290  if (astat & (BT878_ASCERR | BT878_AOCERR)) {
291  if (bt878_verbose) {
293  "bt878(%d): irq%s%s risc_pc=%08x\n",
294  bt->nr,
295  (astat & BT878_ASCERR) ? " SCERR" :
296  "",
297  (astat & BT878_AOCERR) ? " OCERR" :
298  "", btread(BT878_ARISC_PC));
299  }
300  }
301  if (astat & (BT878_APABORT | BT878_ARIPERR | BT878_APPERR)) {
302  if (bt878_verbose) {
304  "bt878(%d): irq%s%s%s risc_pc=%08x\n",
305  bt->nr,
306  (astat & BT878_APABORT) ? " PABORT" :
307  "",
308  (astat & BT878_ARIPERR) ? " RIPERR" :
309  "",
310  (astat & BT878_APPERR) ? " PPERR" :
311  "", btread(BT878_ARISC_PC));
312  }
313  }
314  if (astat & (BT878_AFDSR | BT878_AFTRGT | BT878_AFBUS)) {
315  if (bt878_verbose) {
317  "bt878(%d): irq%s%s%s risc_pc=%08x\n",
318  bt->nr,
319  (astat & BT878_AFDSR) ? " FDSR" : "",
320  (astat & BT878_AFTRGT) ? " FTRGT" :
321  "",
322  (astat & BT878_AFBUS) ? " FBUS" : "",
324  }
325  }
326  if (astat & BT878_ARISCI) {
327  bt->finished_block = (stat & BT878_ARISCS) >> 28;
328  tasklet_schedule(&bt->tasklet);
329  break;
330  }
331  count++;
332  if (count > 20) {
335  "bt878(%d): IRQ lockup, cleared int mask\n",
336  bt->nr);
337  break;
338  }
339  }
340  return IRQ_HANDLED;
341 }
342 
343 int
344 bt878_device_control(struct bt878 *bt, unsigned int cmd, union dst_gpio_packet *mp)
345 {
346  int retval;
347 
348  retval = 0;
350  return -ERESTARTSYS;
351  /* special gpio signal */
352  switch (cmd) {
353  case DST_IG_ENABLE:
354  // dprintk("dvb_bt8xx: dst enable mask 0x%02x enb 0x%02x \n", mp->dstg.enb.mask, mp->dstg.enb.enable);
355  retval = bttv_gpio_enable(bt->bttv_nr,
356  mp->enb.mask,
357  mp->enb.enable);
358  break;
359  case DST_IG_WRITE:
360  // dprintk("dvb_bt8xx: dst write gpio mask 0x%02x out 0x%02x\n", mp->dstg.outp.mask, mp->dstg.outp.highvals);
361  retval = bttv_write_gpio(bt->bttv_nr,
362  mp->outp.mask,
363  mp->outp.highvals);
364 
365  break;
366  case DST_IG_READ:
367  /* read */
368  retval = bttv_read_gpio(bt->bttv_nr, &mp->rd.value);
369  // dprintk("dvb_bt8xx: dst read gpio 0x%02x\n", (unsigned)mp->dstg.rd.value);
370  break;
371  case DST_IG_TS:
372  /* Set packet size */
373  bt->TS_Size = mp->psize;
374  break;
375 
376  default:
377  retval = -EINVAL;
378  break;
379  }
380  mutex_unlock(&bt->gpio_lock);
381  return retval;
382 }
383 
385 
386 #define BROOKTREE_878_DEVICE(vend, dev, name) \
387  { \
388  .vendor = PCI_VENDOR_ID_BROOKTREE, \
389  .device = PCI_DEVICE_ID_BROOKTREE_878, \
390  .subvendor = (vend), .subdevice = (dev), \
391  .driver_data = (unsigned long) name \
392  }
393 
394 static struct pci_device_id bt878_pci_tbl[] __devinitdata = {
395  BROOKTREE_878_DEVICE(0x0071, 0x0101, "Nebula Electronics DigiTV"),
396  BROOKTREE_878_DEVICE(0x1461, 0x0761, "AverMedia AverTV DVB-T 761"),
397  BROOKTREE_878_DEVICE(0x11bd, 0x001c, "Pinnacle PCTV Sat"),
398  BROOKTREE_878_DEVICE(0x11bd, 0x0026, "Pinnacle PCTV SAT CI"),
399  BROOKTREE_878_DEVICE(0x1822, 0x0001, "Twinhan VisionPlus DVB"),
400  BROOKTREE_878_DEVICE(0x270f, 0xfc00,
401  "ChainTech digitop DST-1000 DVB-S"),
402  BROOKTREE_878_DEVICE(0x1461, 0x0771, "AVermedia AverTV DVB-T 771"),
403  BROOKTREE_878_DEVICE(0x18ac, 0xdb10, "DViCO FusionHDTV DVB-T Lite"),
404  BROOKTREE_878_DEVICE(0x18ac, 0xdb11, "Ultraview DVB-T Lite"),
405  BROOKTREE_878_DEVICE(0x18ac, 0xd500, "DViCO FusionHDTV 5 Lite"),
406  BROOKTREE_878_DEVICE(0x7063, 0x2000, "pcHDTV HD-2000 TV"),
407  BROOKTREE_878_DEVICE(0x1822, 0x0026, "DNTV Live! Mini"),
408  { }
409 };
410 
411 MODULE_DEVICE_TABLE(pci, bt878_pci_tbl);
412 
413 static const char * __devinit card_name(const struct pci_device_id *id)
414 {
415  return id->driver_data ? (const char *)id->driver_data : "Unknown";
416 }
417 
418 /***********************/
419 /* PCI device handling */
420 /***********************/
421 
422 static int __devinit bt878_probe(struct pci_dev *dev,
423  const struct pci_device_id *pci_id)
424 {
425  int result = 0;
426  unsigned char lat;
427  struct bt878 *bt;
428 #if defined(__powerpc__)
429  unsigned int cmd;
430 #endif
431  unsigned int cardid;
432 
433  printk(KERN_INFO "bt878: Bt878 AUDIO function found (%d).\n",
434  bt878_num);
435  if (bt878_num >= BT878_MAX) {
436  printk(KERN_ERR "bt878: Too many devices inserted\n");
437  result = -ENOMEM;
438  goto fail0;
439  }
440  if (pci_enable_device(dev))
441  return -EIO;
442 
443  cardid = dev->subsystem_device << 16;
444  cardid |= dev->subsystem_vendor;
445 
446  printk(KERN_INFO "%s: card id=[0x%x],[ %s ] has DVB functions.\n",
447  __func__, cardid, card_name(pci_id));
448 
449  bt = &bt878[bt878_num];
450  bt->dev = dev;
451  bt->nr = bt878_num;
452  bt->shutdown = 0;
453 
454  bt->id = dev->device;
455  bt->irq = dev->irq;
456  bt->bt878_adr = pci_resource_start(dev, 0);
458  pci_resource_len(dev, 0), "bt878")) {
459  result = -EBUSY;
460  goto fail0;
461  }
462 
463  bt->revision = dev->revision;
464  pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
465 
466 
467  printk(KERN_INFO "bt878(%d): Bt%x (rev %d) at %02x:%02x.%x, ",
468  bt878_num, bt->id, bt->revision, dev->bus->number,
469  PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
470  printk("irq: %d, latency: %d, memory: 0x%lx\n",
471  bt->irq, lat, bt->bt878_adr);
472 
473 
474 #if defined(__powerpc__)
475  /* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
476  /* response on cards with no firmware is not enabled by OF */
477  pci_read_config_dword(dev, PCI_COMMAND, &cmd);
478  cmd = (cmd | PCI_COMMAND_MEMORY);
479  pci_write_config_dword(dev, PCI_COMMAND, cmd);
480 #endif
481 
482 #ifdef __sparc__
483  bt->bt878_mem = (unsigned char *) bt->bt878_adr;
484 #else
485  bt->bt878_mem = ioremap(bt->bt878_adr, 0x1000);
486 #endif
487 
488  /* clear interrupt mask */
490 
491  result = request_irq(bt->irq, bt878_irq,
492  IRQF_SHARED | IRQF_DISABLED, "bt878",
493  (void *) bt);
494  if (result == -EINVAL) {
495  printk(KERN_ERR "bt878(%d): Bad irq number or handler\n",
496  bt878_num);
497  goto fail1;
498  }
499  if (result == -EBUSY) {
501  "bt878(%d): IRQ %d busy, change your PnP config in BIOS\n",
502  bt878_num, bt->irq);
503  goto fail1;
504  }
505  if (result < 0)
506  goto fail1;
507 
508  pci_set_master(dev);
509  pci_set_drvdata(dev, bt);
510 
511  if ((result = bt878_mem_alloc(bt))) {
512  printk(KERN_ERR "bt878: failed to allocate memory!\n");
513  goto fail2;
514  }
515 
516  bt878_make_risc(bt);
518  bt878_num++;
519 
520  return 0;
521 
522  fail2:
523  free_irq(bt->irq, bt);
524  fail1:
526  pci_resource_len(bt->dev, 0));
527  fail0:
528  pci_disable_device(dev);
529  return result;
530 }
531 
532 static void __devexit bt878_remove(struct pci_dev *pci_dev)
533 {
534  u8 command;
535  struct bt878 *bt = pci_get_drvdata(pci_dev);
536 
537  if (bt878_verbose)
538  printk(KERN_INFO "bt878(%d): unloading\n", bt->nr);
539 
540  /* turn off all capturing, DMA and IRQs */
541  btand(~0x13, BT878_AGPIO_DMA_CTL);
542 
543  /* first disable interrupts before unmapping the memory! */
546 
547  /* disable PCI bus-mastering */
548  pci_read_config_byte(bt->dev, PCI_COMMAND, &command);
549  /* Should this be &=~ ?? */
550  command &= ~PCI_COMMAND_MASTER;
551  pci_write_config_byte(bt->dev, PCI_COMMAND, command);
552 
553  free_irq(bt->irq, bt);
554  printk(KERN_DEBUG "bt878_mem: 0x%p.\n", bt->bt878_mem);
555  if (bt->bt878_mem)
556  iounmap(bt->bt878_mem);
557 
559  pci_resource_len(bt->dev, 0));
560  /* wake up any waiting processes
561  because shutdown flag is set, no new processes (in this queue)
562  are expected
563  */
564  bt->shutdown = 1;
565  bt878_mem_free(bt);
566 
567  pci_set_drvdata(pci_dev, NULL);
568  pci_disable_device(pci_dev);
569  return;
570 }
571 
572 static struct pci_driver bt878_pci_driver = {
573  .name = "bt878",
574  .id_table = bt878_pci_tbl,
575  .probe = bt878_probe,
576  .remove = __devexit_p(bt878_remove),
577 };
578 
579 /*******************************/
580 /* Module management functions */
581 /*******************************/
582 
583 static int __init bt878_init_module(void)
584 {
585  bt878_num = 0;
586 
587  printk(KERN_INFO "bt878: AUDIO driver version %d.%d.%d loaded\n",
588  (BT878_VERSION_CODE >> 16) & 0xff,
589  (BT878_VERSION_CODE >> 8) & 0xff,
590  BT878_VERSION_CODE & 0xff);
591 
592  return pci_register_driver(&bt878_pci_driver);
593 }
594 
595 static void __exit bt878_cleanup_module(void)
596 {
597  pci_unregister_driver(&bt878_pci_driver);
598 }
599 
600 module_init(bt878_init_module);
601 module_exit(bt878_cleanup_module);
602 
603 MODULE_LICENSE("GPL");
604 
605 /*
606  * Local variables:
607  * c-basic-offset: 8
608  * End:
609  */