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 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 */ 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 ((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); 517 btwrite(0, BT878_AINT_MASK); 518 bt878_num++; 519 520 return 0; 521 522 fail2: 523 free_irq(bt->irq, bt); 524 fail1: 525 release_mem_region(pci_resource_start(bt->dev, 0), 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! */ 544 btwrite(0, BT878_AINT_MASK); 545 btwrite(~0U, BT878_AINT_STAT); 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); 557 558 release_mem_region(pci_resource_start(bt->dev, 0), 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 */ 610