Version:  2.0.40 2.2.26 2.4.37 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 3.15 3.16

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 =
105                     pci_alloc_consistent(bt->dev, bt->buf_size,
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 =
117                     pci_alloc_consistent(bt->dev, bt->risc_size,
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))
182                         RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
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
191                         RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
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 
200         RISC_INSTR(RISC_JUMP);
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 
223         btwrite(bt->risc_dma, BT878_ARISC_START);
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 |
233                 BT878_ARIPERR | BT878_APPERR | BT878_AFDSR | BT878_AFTRGT |
234                 BT878_AFBUS | BT878_ARISCI;
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 
251         btwrite(0, BT878_AINT_MASK);
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 
265 EXPORT_SYMBOL(bt878_start);
266 EXPORT_SYMBOL(bt878_stop);
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) {
292                                 printk(KERN_INFO
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) {
303                                 printk(KERN_INFO
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) {
316                                 printk(KERN_INFO
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" : "",
323                                      btread(BT878_ARISC_PC));
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) {
333                         btwrite(0, BT878_AINT_MASK);
334                         printk(KERN_ERR
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;
349         if (mutex_lock_interruptible(&bt->gpio_lock))
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 
384 EXPORT_SYMBOL(bt878_device_control);
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[] = {
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 * 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 bt878_probe(struct pci_dev *dev, const struct pci_device_id *pci_id)
423 {
424         int result = 0;
425         unsigned char lat;
426         struct bt878 *bt;
427 #if defined(__powerpc__)
428         unsigned int cmd;
429 #endif
430         unsigned int cardid;
431 
432         printk(KERN_INFO "bt878: Bt878 AUDIO function found (%d).\n",
433                bt878_num);
434         if (bt878_num >= BT878_MAX) {
435                 printk(KERN_ERR "bt878: Too many devices inserted\n");
436                 result = -ENOMEM;
437                 goto fail0;
438         }
439         if (pci_enable_device(dev))
440                 return -EIO;
441 
442         cardid = dev->subsystem_device << 16;
443         cardid |= dev->subsystem_vendor;
444 
445         printk(KERN_INFO "%s: card id=[0x%x],[ %s ] has DVB functions.\n",
446                                 __func__, cardid, card_name(pci_id));
447 
448         bt = &bt878[bt878_num];
449         bt->dev = dev;
450         bt->nr = bt878_num;
451         bt->shutdown = 0;
452 
453         bt->id = dev->device;
454         bt->irq = dev->irq;
455         bt->bt878_adr = pci_resource_start(dev, 0);
456         if (!request_mem_region(pci_resource_start(dev, 0),
457                                 pci_resource_len(dev, 0), "bt878")) {
458                 result = -EBUSY;
459                 goto fail0;
460         }
461 
462         bt->revision = dev->revision;
463         pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
464 
465 
466         printk(KERN_INFO "bt878(%d): Bt%x (rev %d) at %02x:%02x.%x, ",
467                bt878_num, bt->id, bt->revision, dev->bus->number,
468                PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
469         printk("irq: %d, latency: %d, memory: 0x%lx\n",
470                bt->irq, lat, bt->bt878_adr);
471 
472 
473 #if defined(__powerpc__)
474         /* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
475         /* response on cards with no firmware is not enabled by OF */
476         pci_read_config_dword(dev, PCI_COMMAND, &cmd);
477         cmd = (cmd | PCI_COMMAND_MEMORY);
478         pci_write_config_dword(dev, PCI_COMMAND, cmd);
479 #endif
480 
481 #ifdef __sparc__
482         bt->bt878_mem = (unsigned char *) bt->bt878_adr;
483 #else
484         bt->bt878_mem = ioremap(bt->bt878_adr, 0x1000);
485 #endif
486 
487         /* clear interrupt mask */
488         btwrite(0, BT848_INT_MASK);
489 
490         result = request_irq(bt->irq, bt878_irq,
491                              IRQF_SHARED, "bt878", (void *) bt);
492         if (result == -EINVAL) {
493                 printk(KERN_ERR "bt878(%d): Bad irq number or handler\n",
494                        bt878_num);
495                 goto fail1;
496         }
497         if (result == -EBUSY) {
498                 printk(KERN_ERR
499                        "bt878(%d): IRQ %d busy, change your PnP config in BIOS\n",
500                        bt878_num, bt->irq);
501                 goto fail1;
502         }
503         if (result < 0)
504                 goto fail1;
505 
506         pci_set_master(dev);
507         pci_set_drvdata(dev, bt);
508 
509         if ((result = bt878_mem_alloc(bt))) {
510                 printk(KERN_ERR "bt878: failed to allocate memory!\n");
511                 goto fail2;
512         }
513 
514         bt878_make_risc(bt);
515         btwrite(0, BT878_AINT_MASK);
516         bt878_num++;
517 
518         return 0;
519 
520       fail2:
521         free_irq(bt->irq, bt);
522       fail1:
523         release_mem_region(pci_resource_start(bt->dev, 0),
524                            pci_resource_len(bt->dev, 0));
525       fail0:
526         pci_disable_device(dev);
527         return result;
528 }
529 
530 static void bt878_remove(struct pci_dev *pci_dev)
531 {
532         u8 command;
533         struct bt878 *bt = pci_get_drvdata(pci_dev);
534 
535         if (bt878_verbose)
536                 printk(KERN_INFO "bt878(%d): unloading\n", bt->nr);
537 
538         /* turn off all capturing, DMA and IRQs */
539         btand(~0x13, BT878_AGPIO_DMA_CTL);
540 
541         /* first disable interrupts before unmapping the memory! */
542         btwrite(0, BT878_AINT_MASK);
543         btwrite(~0U, BT878_AINT_STAT);
544 
545         /* disable PCI bus-mastering */
546         pci_read_config_byte(bt->dev, PCI_COMMAND, &command);
547         /* Should this be &=~ ?? */
548         command &= ~PCI_COMMAND_MASTER;
549         pci_write_config_byte(bt->dev, PCI_COMMAND, command);
550 
551         free_irq(bt->irq, bt);
552         printk(KERN_DEBUG "bt878_mem: 0x%p.\n", bt->bt878_mem);
553         if (bt->bt878_mem)
554                 iounmap(bt->bt878_mem);
555 
556         release_mem_region(pci_resource_start(bt->dev, 0),
557                            pci_resource_len(bt->dev, 0));
558         /* wake up any waiting processes
559            because shutdown flag is set, no new processes (in this queue)
560            are expected
561          */
562         bt->shutdown = 1;
563         bt878_mem_free(bt);
564 
565         pci_disable_device(pci_dev);
566         return;
567 }
568 
569 static struct pci_driver bt878_pci_driver = {
570       .name     = "bt878",
571       .id_table = bt878_pci_tbl,
572       .probe    = bt878_probe,
573       .remove   = bt878_remove,
574 };
575 
576 /*******************************/
577 /* Module management functions */
578 /*******************************/
579 
580 static int __init bt878_init_module(void)
581 {
582         bt878_num = 0;
583 
584         printk(KERN_INFO "bt878: AUDIO driver version %d.%d.%d loaded\n",
585                (BT878_VERSION_CODE >> 16) & 0xff,
586                (BT878_VERSION_CODE >> 8) & 0xff,
587                BT878_VERSION_CODE & 0xff);
588 
589         return pci_register_driver(&bt878_pci_driver);
590 }
591 
592 static void __exit bt878_cleanup_module(void)
593 {
594         pci_unregister_driver(&bt878_pci_driver);
595 }
596 
597 module_init(bt878_init_module);
598 module_exit(bt878_cleanup_module);
599 
600 MODULE_LICENSE("GPL");
601 
602 /*
603  * Local variables:
604  * c-basic-offset: 8
605  * End:
606  */
607 

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