Version:  2.0.40 2.2.26 2.4.37 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 3.15 3.16 3.17 3.18

Linux/drivers/media/pci/bt8xx/bt878.c

  1 /*
  2  * bt878.c: part of the driver for the Pinnacle PCTV Sat DVB PCI card
  3  *
  4  * Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@htp-tel.de>
  5  *
  6  * large parts based on the bttv driver
  7  * Copyright (C) 1996,97,98 Ralph  Metzler (rjkm@metzlerbros.de)
  8  *                        & Marcus Metzler (mocm@metzlerbros.de)
  9  * (c) 1999,2000 Gerd Knorr <kraxel@goldbach.in-berlin.de>
 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);
 57 MODULE_PARM_DESC(verbose,
 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 
 62 int bt878_num;
 63 struct bt878 bt878[BT878_MAX];
 64 
 65 EXPORT_SYMBOL(bt878_num);
 66 EXPORT_SYMBOL(bt878);
 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) {
 87                 pci_free_consistent(bt->dev, bt->buf_size, bt->buf_cpu,
 88                                     bt->buf_dma);
 89                 bt->buf_cpu = NULL;
 90         }
 91 
 92         if (bt->risc_cpu) {
 93                 pci_free_consistent(bt->dev, bt->risc_size, 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 = pci_zalloc_consistent(bt->dev, bt->buf_size,
105                                                     &bt->buf_dma);
106                 if (!bt->buf_cpu)
107                         return -ENOMEM;
108         }
109 
110         if (!bt->risc_cpu) {
111                 bt->risc_size = PAGE_SIZE;
112                 bt->risc_cpu = pci_zalloc_consistent(bt->dev, bt->risc_size,
113                                                      &bt->risc_dma);
114                 if (!bt->risc_cpu) {
115                         bt878_mem_free(bt);
116                         return -ENOMEM;
117                 }
118         }
119 
120         return 0;
121 }
122 
123 /* RISC instructions */
124 #define RISC_WRITE              (0x01 << 28)
125 #define RISC_JUMP               (0x07 << 28)
126 #define RISC_SYNC               (0x08 << 28)
127 
128 /* RISC bits */
129 #define RISC_WR_SOL             (1 << 27)
130 #define RISC_WR_EOL             (1 << 26)
131 #define RISC_IRQ                (1 << 24)
132 #define RISC_STATUS(status)     ((((~status) & 0x0F) << 20) | ((status & 0x0F) << 16))
133 #define RISC_SYNC_RESYNC        (1 << 15)
134 #define RISC_SYNC_FM1           0x06
135 #define RISC_SYNC_VRO           0x0C
136 
137 #define RISC_FLUSH()            bt->risc_pos = 0
138 #define RISC_INSTR(instr)       bt->risc_cpu[bt->risc_pos++] = cpu_to_le32(instr)
139 
140 static int bt878_make_risc(struct bt878 *bt)
141 {
142         bt->block_bytes = bt->buf_size >> 4;
143         bt->block_count = 1 << 4;
144         bt->line_bytes = bt->block_bytes;
145         bt->line_count = bt->block_count;
146 
147         while (bt->line_bytes > 4095) {
148                 bt->line_bytes >>= 1;
149                 bt->line_count <<= 1;
150         }
151 
152         if (bt->line_count > 255) {
153                 printk(KERN_ERR "bt878: buffer size error!\n");
154                 return -EINVAL;
155         }
156         return 0;
157 }
158 
159 
160 static void bt878_risc_program(struct bt878 *bt, u32 op_sync_orin)
161 {
162         u32 buf_pos = 0;
163         u32 line;
164 
165         RISC_FLUSH();
166         RISC_INSTR(RISC_SYNC | RISC_SYNC_FM1 | op_sync_orin);
167         RISC_INSTR(0);
168 
169         dprintk("bt878: risc len lines %u, bytes per line %u\n",
170                         bt->line_count, bt->line_bytes);
171         for (line = 0; line < bt->line_count; line++) {
172                 // At the beginning of every block we issue an IRQ with previous (finished) block number set
173                 if (!(buf_pos % bt->block_bytes))
174                         RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
175                                    RISC_IRQ |
176                                    RISC_STATUS(((buf_pos /
177                                                  bt->block_bytes) +
178                                                 (bt->block_count -
179                                                  1)) %
180                                                bt->block_count) | bt->
181                                    line_bytes);
182                 else
183                         RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
184                                    bt->line_bytes);
185                 RISC_INSTR(bt->buf_dma + buf_pos);
186                 buf_pos += bt->line_bytes;
187         }
188 
189         RISC_INSTR(RISC_SYNC | op_sync_orin | RISC_SYNC_VRO);
190         RISC_INSTR(0);
191 
192         RISC_INSTR(RISC_JUMP);
193         RISC_INSTR(bt->risc_dma);
194 
195         btwrite((bt->line_count << 16) | bt->line_bytes, BT878_APACK_LEN);
196 }
197 
198 /*****************************/
199 /* Start/Stop grabbing funcs */
200 /*****************************/
201 
202 void bt878_start(struct bt878 *bt, u32 controlreg, u32 op_sync_orin,
203                 u32 irq_err_ignore)
204 {
205         u32 int_mask;
206 
207         dprintk("bt878 debug: bt878_start (ctl=%8.8x)\n", controlreg);
208         /* complete the writing of the risc dma program now we have
209          * the card specifics
210          */
211         bt878_risc_program(bt, op_sync_orin);
212         controlreg &= ~0x1f;
213         controlreg |= 0x1b;
214 
215         btwrite(bt->risc_dma, BT878_ARISC_START);
216 
217         /* original int mask had :
218          *    6    2    8    4    0
219          * 1111 1111 1000 0000 0000
220          * SCERR|OCERR|PABORT|RIPERR|FDSR|FTRGT|FBUS|RISCI
221          * Hacked for DST to:
222          * SCERR | OCERR | FDSR | FTRGT | FBUS | RISCI
223          */
224         int_mask = BT878_ASCERR | BT878_AOCERR | BT878_APABORT |
225                 BT878_ARIPERR | BT878_APPERR | BT878_AFDSR | BT878_AFTRGT |
226                 BT878_AFBUS | BT878_ARISCI;
227 
228 
229         /* ignore pesky bits */
230         int_mask &= ~irq_err_ignore;
231 
232         btwrite(int_mask, BT878_AINT_MASK);
233         btwrite(controlreg, BT878_AGPIO_DMA_CTL);
234 }
235 
236 void bt878_stop(struct bt878 *bt)
237 {
238         u32 stat;
239         int i = 0;
240 
241         dprintk("bt878 debug: bt878_stop\n");
242 
243         btwrite(0, BT878_AINT_MASK);
244         btand(~0x13, BT878_AGPIO_DMA_CTL);
245 
246         do {
247                 stat = btread(BT878_AINT_STAT);
248                 if (!(stat & BT878_ARISC_EN))
249                         break;
250                 i++;
251         } while (i < 500);
252 
253         dprintk("bt878(%d) debug: bt878_stop, i=%d, stat=0x%8.8x\n",
254                 bt->nr, i, stat);
255 }
256 
257 EXPORT_SYMBOL(bt878_start);
258 EXPORT_SYMBOL(bt878_stop);
259 
260 /*****************************/
261 /* Interrupt service routine */
262 /*****************************/
263 
264 static irqreturn_t bt878_irq(int irq, void *dev_id)
265 {
266         u32 stat, astat, mask;
267         int count;
268         struct bt878 *bt;
269 
270         bt = (struct bt878 *) dev_id;
271 
272         count = 0;
273         while (1) {
274                 stat = btread(BT878_AINT_STAT);
275                 mask = btread(BT878_AINT_MASK);
276                 if (!(astat = (stat & mask)))
277                         return IRQ_NONE;        /* this interrupt is not for me */
278 /*              dprintk("bt878(%d) debug: irq count %d, stat 0x%8.8x, mask 0x%8.8x\n",bt->nr,count,stat,mask); */
279                 btwrite(astat, BT878_AINT_STAT);        /* try to clear interrupt condition */
280 
281 
282                 if (astat & (BT878_ASCERR | BT878_AOCERR)) {
283                         if (bt878_verbose) {
284                                 printk(KERN_INFO
285                                        "bt878(%d): irq%s%s risc_pc=%08x\n",
286                                        bt->nr,
287                                        (astat & BT878_ASCERR) ? " SCERR" :
288                                        "",
289                                        (astat & BT878_AOCERR) ? " OCERR" :
290                                        "", btread(BT878_ARISC_PC));
291                         }
292                 }
293                 if (astat & (BT878_APABORT | BT878_ARIPERR | BT878_APPERR)) {
294                         if (bt878_verbose) {
295                                 printk(KERN_INFO
296                                      "bt878(%d): irq%s%s%s risc_pc=%08x\n",
297                                      bt->nr,
298                                      (astat & BT878_APABORT) ? " PABORT" :
299                                      "",
300                                      (astat & BT878_ARIPERR) ? " RIPERR" :
301                                      "",
302                                      (astat & BT878_APPERR) ? " PPERR" :
303                                      "", btread(BT878_ARISC_PC));
304                         }
305                 }
306                 if (astat & (BT878_AFDSR | BT878_AFTRGT | BT878_AFBUS)) {
307                         if (bt878_verbose) {
308                                 printk(KERN_INFO
309                                      "bt878(%d): irq%s%s%s risc_pc=%08x\n",
310                                      bt->nr,
311                                      (astat & BT878_AFDSR) ? " FDSR" : "",
312                                      (astat & BT878_AFTRGT) ? " FTRGT" :
313                                      "",
314                                      (astat & BT878_AFBUS) ? " FBUS" : "",
315                                      btread(BT878_ARISC_PC));
316                         }
317                 }
318                 if (astat & BT878_ARISCI) {
319                         bt->finished_block = (stat & BT878_ARISCS) >> 28;
320                         tasklet_schedule(&bt->tasklet);
321                         break;
322                 }
323                 count++;
324                 if (count > 20) {
325                         btwrite(0, BT878_AINT_MASK);
326                         printk(KERN_ERR
327                                "bt878(%d): IRQ lockup, cleared int mask\n",
328                                bt->nr);
329                         break;
330                 }
331         }
332         return IRQ_HANDLED;
333 }
334 
335 int
336 bt878_device_control(struct bt878 *bt, unsigned int cmd, union dst_gpio_packet *mp)
337 {
338         int retval;
339 
340         retval = 0;
341         if (mutex_lock_interruptible(&bt->gpio_lock))
342                 return -ERESTARTSYS;
343         /* special gpio signal */
344         switch (cmd) {
345             case DST_IG_ENABLE:
346                 // dprintk("dvb_bt8xx: dst enable mask 0x%02x enb 0x%02x \n", mp->dstg.enb.mask, mp->dstg.enb.enable);
347                 retval = bttv_gpio_enable(bt->bttv_nr,
348                                 mp->enb.mask,
349                                 mp->enb.enable);
350                 break;
351             case DST_IG_WRITE:
352                 // dprintk("dvb_bt8xx: dst write gpio mask 0x%02x out 0x%02x\n", mp->dstg.outp.mask, mp->dstg.outp.highvals);
353                 retval = bttv_write_gpio(bt->bttv_nr,
354                                 mp->outp.mask,
355                                 mp->outp.highvals);
356 
357                 break;
358             case DST_IG_READ:
359                 /* read */
360                 retval =  bttv_read_gpio(bt->bttv_nr, &mp->rd.value);
361                 // dprintk("dvb_bt8xx: dst read gpio 0x%02x\n", (unsigned)mp->dstg.rd.value);
362                 break;
363             case DST_IG_TS:
364                 /* Set packet size */
365                 bt->TS_Size = mp->psize;
366                 break;
367 
368             default:
369                 retval = -EINVAL;
370                 break;
371         }
372         mutex_unlock(&bt->gpio_lock);
373         return retval;
374 }
375 
376 EXPORT_SYMBOL(bt878_device_control);
377 
378 #define BROOKTREE_878_DEVICE(vend, dev, name) \
379         { \
380                 .vendor = PCI_VENDOR_ID_BROOKTREE, \
381                 .device = PCI_DEVICE_ID_BROOKTREE_878, \
382                 .subvendor = (vend), .subdevice = (dev), \
383                 .driver_data = (unsigned long) name \
384         }
385 
386 static struct pci_device_id bt878_pci_tbl[] = {
387         BROOKTREE_878_DEVICE(0x0071, 0x0101, "Nebula Electronics DigiTV"),
388         BROOKTREE_878_DEVICE(0x1461, 0x0761, "AverMedia AverTV DVB-T 761"),
389         BROOKTREE_878_DEVICE(0x11bd, 0x001c, "Pinnacle PCTV Sat"),
390         BROOKTREE_878_DEVICE(0x11bd, 0x0026, "Pinnacle PCTV SAT CI"),
391         BROOKTREE_878_DEVICE(0x1822, 0x0001, "Twinhan VisionPlus DVB"),
392         BROOKTREE_878_DEVICE(0x270f, 0xfc00,
393                                 "ChainTech digitop DST-1000 DVB-S"),
394         BROOKTREE_878_DEVICE(0x1461, 0x0771, "AVermedia AverTV DVB-T 771"),
395         BROOKTREE_878_DEVICE(0x18ac, 0xdb10, "DViCO FusionHDTV DVB-T Lite"),
396         BROOKTREE_878_DEVICE(0x18ac, 0xdb11, "Ultraview DVB-T Lite"),
397         BROOKTREE_878_DEVICE(0x18ac, 0xd500, "DViCO FusionHDTV 5 Lite"),
398         BROOKTREE_878_DEVICE(0x7063, 0x2000, "pcHDTV HD-2000 TV"),
399         BROOKTREE_878_DEVICE(0x1822, 0x0026, "DNTV Live! Mini"),
400         { }
401 };
402 
403 MODULE_DEVICE_TABLE(pci, bt878_pci_tbl);
404 
405 static const char * card_name(const struct pci_device_id *id)
406 {
407         return id->driver_data ? (const char *)id->driver_data : "Unknown";
408 }
409 
410 /***********************/
411 /* PCI device handling */
412 /***********************/
413 
414 static int bt878_probe(struct pci_dev *dev, const struct pci_device_id *pci_id)
415 {
416         int result = 0;
417         unsigned char lat;
418         struct bt878 *bt;
419 #if defined(__powerpc__)
420         unsigned int cmd;
421 #endif
422         unsigned int cardid;
423 
424         printk(KERN_INFO "bt878: Bt878 AUDIO function found (%d).\n",
425                bt878_num);
426         if (bt878_num >= BT878_MAX) {
427                 printk(KERN_ERR "bt878: Too many devices inserted\n");
428                 result = -ENOMEM;
429                 goto fail0;
430         }
431         if (pci_enable_device(dev))
432                 return -EIO;
433 
434         cardid = dev->subsystem_device << 16;
435         cardid |= dev->subsystem_vendor;
436 
437         printk(KERN_INFO "%s: card id=[0x%x],[ %s ] has DVB functions.\n",
438                                 __func__, cardid, card_name(pci_id));
439 
440         bt = &bt878[bt878_num];
441         bt->dev = dev;
442         bt->nr = bt878_num;
443         bt->shutdown = 0;
444 
445         bt->id = dev->device;
446         bt->irq = dev->irq;
447         bt->bt878_adr = pci_resource_start(dev, 0);
448         if (!request_mem_region(pci_resource_start(dev, 0),
449                                 pci_resource_len(dev, 0), "bt878")) {
450                 result = -EBUSY;
451                 goto fail0;
452         }
453 
454         bt->revision = dev->revision;
455         pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
456 
457 
458         printk(KERN_INFO "bt878(%d): Bt%x (rev %d) at %02x:%02x.%x, ",
459                bt878_num, bt->id, bt->revision, dev->bus->number,
460                PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
461         printk("irq: %d, latency: %d, memory: 0x%lx\n",
462                bt->irq, lat, bt->bt878_adr);
463 
464 
465 #if defined(__powerpc__)
466         /* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
467         /* response on cards with no firmware is not enabled by OF */
468         pci_read_config_dword(dev, PCI_COMMAND, &cmd);
469         cmd = (cmd | PCI_COMMAND_MEMORY);
470         pci_write_config_dword(dev, PCI_COMMAND, cmd);
471 #endif
472 
473 #ifdef __sparc__
474         bt->bt878_mem = (unsigned char *) bt->bt878_adr;
475 #else
476         bt->bt878_mem = ioremap(bt->bt878_adr, 0x1000);
477 #endif
478 
479         /* clear interrupt mask */
480         btwrite(0, BT848_INT_MASK);
481 
482         result = request_irq(bt->irq, bt878_irq,
483                              IRQF_SHARED, "bt878", (void *) bt);
484         if (result == -EINVAL) {
485                 printk(KERN_ERR "bt878(%d): Bad irq number or handler\n",
486                        bt878_num);
487                 goto fail1;
488         }
489         if (result == -EBUSY) {
490                 printk(KERN_ERR
491                        "bt878(%d): IRQ %d busy, change your PnP config in BIOS\n",
492                        bt878_num, bt->irq);
493                 goto fail1;
494         }
495         if (result < 0)
496                 goto fail1;
497 
498         pci_set_master(dev);
499         pci_set_drvdata(dev, bt);
500 
501         if ((result = bt878_mem_alloc(bt))) {
502                 printk(KERN_ERR "bt878: failed to allocate memory!\n");
503                 goto fail2;
504         }
505 
506         bt878_make_risc(bt);
507         btwrite(0, BT878_AINT_MASK);
508         bt878_num++;
509 
510         return 0;
511 
512       fail2:
513         free_irq(bt->irq, bt);
514       fail1:
515         release_mem_region(pci_resource_start(bt->dev, 0),
516                            pci_resource_len(bt->dev, 0));
517       fail0:
518         pci_disable_device(dev);
519         return result;
520 }
521 
522 static void bt878_remove(struct pci_dev *pci_dev)
523 {
524         u8 command;
525         struct bt878 *bt = pci_get_drvdata(pci_dev);
526 
527         if (bt878_verbose)
528                 printk(KERN_INFO "bt878(%d): unloading\n", bt->nr);
529 
530         /* turn off all capturing, DMA and IRQs */
531         btand(~0x13, BT878_AGPIO_DMA_CTL);
532 
533         /* first disable interrupts before unmapping the memory! */
534         btwrite(0, BT878_AINT_MASK);
535         btwrite(~0U, BT878_AINT_STAT);
536 
537         /* disable PCI bus-mastering */
538         pci_read_config_byte(bt->dev, PCI_COMMAND, &command);
539         /* Should this be &=~ ?? */
540         command &= ~PCI_COMMAND_MASTER;
541         pci_write_config_byte(bt->dev, PCI_COMMAND, command);
542 
543         free_irq(bt->irq, bt);
544         printk(KERN_DEBUG "bt878_mem: 0x%p.\n", bt->bt878_mem);
545         if (bt->bt878_mem)
546                 iounmap(bt->bt878_mem);
547 
548         release_mem_region(pci_resource_start(bt->dev, 0),
549                            pci_resource_len(bt->dev, 0));
550         /* wake up any waiting processes
551            because shutdown flag is set, no new processes (in this queue)
552            are expected
553          */
554         bt->shutdown = 1;
555         bt878_mem_free(bt);
556 
557         pci_disable_device(pci_dev);
558         return;
559 }
560 
561 static struct pci_driver bt878_pci_driver = {
562       .name     = "bt878",
563       .id_table = bt878_pci_tbl,
564       .probe    = bt878_probe,
565       .remove   = bt878_remove,
566 };
567 
568 /*******************************/
569 /* Module management functions */
570 /*******************************/
571 
572 static int __init bt878_init_module(void)
573 {
574         bt878_num = 0;
575 
576         printk(KERN_INFO "bt878: AUDIO driver version %d.%d.%d loaded\n",
577                (BT878_VERSION_CODE >> 16) & 0xff,
578                (BT878_VERSION_CODE >> 8) & 0xff,
579                BT878_VERSION_CODE & 0xff);
580 
581         return pci_register_driver(&bt878_pci_driver);
582 }
583 
584 static void __exit bt878_cleanup_module(void)
585 {
586         pci_unregister_driver(&bt878_pci_driver);
587 }
588 
589 module_init(bt878_init_module);
590 module_exit(bt878_cleanup_module);
591 
592 MODULE_LICENSE("GPL");
593 
594 /*
595  * Local variables:
596  * c-basic-offset: 8
597  * End:
598  */
599 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us