56d8fab688bb91f4ca1c404ed86aeacbefbaa411
[linux-2.6.git] / drivers / media / dvb / 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[] __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);
457         if (!request_mem_region(pci_resource_start(dev, 0),
458                                 pci_resource_len(dev, 0), "bt878")) {
459                 result = -EBUSY;
460                 goto fail0;
461         }
462
463         pci_read_config_byte(dev, PCI_CLASS_REVISION, &bt->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 */
489         btwrite(0, BT848_INT_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) {
500                 printk(KERN_ERR
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(init_bt878(btv) < 0) {
512                 bt878_remove(dev);
513                 return -EIO;
514         }
515 */
516
517         if ((result = bt878_mem_alloc(bt))) {
518                 printk(KERN_ERR "bt878: failed to allocate memory!\n");
519                 goto fail2;
520         }
521
522         bt878_make_risc(bt);
523         btwrite(0, BT878_AINT_MASK);
524         bt878_num++;
525
526         return 0;
527
528       fail2:
529         free_irq(bt->irq, bt);
530       fail1:
531         release_mem_region(pci_resource_start(bt->dev, 0),
532                            pci_resource_len(bt->dev, 0));
533       fail0:
534         pci_disable_device(dev);
535         return result;
536 }
537
538 static void __devexit bt878_remove(struct pci_dev *pci_dev)
539 {
540         u8 command;
541         struct bt878 *bt = pci_get_drvdata(pci_dev);
542
543         if (bt878_verbose)
544                 printk(KERN_INFO "bt878(%d): unloading\n", bt->nr);
545
546         /* turn off all capturing, DMA and IRQs */
547         btand(~0x13, BT878_AGPIO_DMA_CTL);
548
549         /* first disable interrupts before unmapping the memory! */
550         btwrite(0, BT878_AINT_MASK);
551         btwrite(~0U, BT878_AINT_STAT);
552
553         /* disable PCI bus-mastering */
554         pci_read_config_byte(bt->dev, PCI_COMMAND, &command);
555         /* Should this be &=~ ?? */
556         command &= ~PCI_COMMAND_MASTER;
557         pci_write_config_byte(bt->dev, PCI_COMMAND, command);
558
559         free_irq(bt->irq, bt);
560         printk(KERN_DEBUG "bt878_mem: 0x%p.\n", bt->bt878_mem);
561         if (bt->bt878_mem)
562                 iounmap(bt->bt878_mem);
563
564         release_mem_region(pci_resource_start(bt->dev, 0),
565                            pci_resource_len(bt->dev, 0));
566         /* wake up any waiting processes
567            because shutdown flag is set, no new processes (in this queue)
568            are expected
569          */
570         bt->shutdown = 1;
571         bt878_mem_free(bt);
572
573         pci_set_drvdata(pci_dev, NULL);
574         pci_disable_device(pci_dev);
575         return;
576 }
577
578 static struct pci_driver bt878_pci_driver = {
579       .name     = "bt878",
580       .id_table = bt878_pci_tbl,
581       .probe    = bt878_probe,
582       .remove   = bt878_remove,
583 };
584
585 static int bt878_pci_driver_registered;
586
587 /*******************************/
588 /* Module management functions */
589 /*******************************/
590
591 static int bt878_init_module(void)
592 {
593         bt878_num = 0;
594         bt878_pci_driver_registered = 0;
595
596         printk(KERN_INFO "bt878: AUDIO driver version %d.%d.%d loaded\n",
597                (BT878_VERSION_CODE >> 16) & 0xff,
598                (BT878_VERSION_CODE >> 8) & 0xff,
599                BT878_VERSION_CODE & 0xff);
600 /*
601         bt878_check_chipset();
602 */
603         /* later we register inside of bt878_find_audio_dma()
604          * because we may want to ignore certain cards */
605         bt878_pci_driver_registered = 1;
606         return pci_register_driver(&bt878_pci_driver);
607 }
608
609 static void bt878_cleanup_module(void)
610 {
611         if (bt878_pci_driver_registered) {
612                 bt878_pci_driver_registered = 0;
613                 pci_unregister_driver(&bt878_pci_driver);
614         }
615         return;
616 }
617
618 module_init(bt878_init_module);
619 module_exit(bt878_cleanup_module);
620
621 //MODULE_AUTHOR("XXX");
622 MODULE_LICENSE("GPL");
623
624 /*
625  * Local variables:
626  * c-basic-offset: 8
627  * End:
628  */