1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * bt878.c: part of the driver for the Pinnacle PCTV Sat DVB PCI card 4 * 5 * Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@htp-tel.de> 6 * 7 * large parts based on the bttv driver 8 * Copyright (C) 1996,97,98 Ralph Metzler (rjkm@metzlerbros.de) 9 * & Marcus Metzler (mocm@metzlerbros.de) 10 * (c) 1999,2000 Gerd Knorr <kraxel@goldbach.in-berlin.de> 11 */ 12 13 #include <linux/module.h> 14 #include <linux/kernel.h> 15 #include <linux/pci.h> 16 #include <linux/pgtable.h> 17 #include <asm/io.h> 18 #include <linux/ioport.h> 19 #include <asm/page.h> 20 #include <linux/types.h> 21 #include <linux/interrupt.h> 22 #include <linux/kmod.h> 23 #include <linux/vmalloc.h> 24 #include <linux/init.h> 25 26 #include <media/dmxdev.h> 27 #include <media/dvbdev.h> 28 #include "bt878.h" 29 #include "dst_priv.h" 30 31 32 /**************************************/ 33 /* Miscellaneous utility definitions */ 34 /**************************************/ 35 36 static unsigned int bt878_verbose = 1; 37 static unsigned int bt878_debug; 38 39 module_param_named(verbose, bt878_verbose, int, 0444); 40 MODULE_PARM_DESC(verbose, 41 "verbose startup messages, default is 1 (yes)"); 42 module_param_named(debug, bt878_debug, int, 0644); 43 MODULE_PARM_DESC(debug, "Turn on/off debugging, default is 0 (off)."); 44 45 int bt878_num; 46 struct bt878 bt878[BT878_MAX]; 47 48 EXPORT_SYMBOL(bt878_num); 49 EXPORT_SYMBOL(bt878); 50 51 #define btwrite(dat,adr) bmtwrite((dat), (bt->bt878_mem+(adr))) 52 #define btread(adr) bmtread(bt->bt878_mem+(adr)) 53 54 #define btand(dat,adr) btwrite((dat) & btread(adr), adr) 55 #define btor(dat,adr) btwrite((dat) | btread(adr), adr) 56 #define btaor(dat,mask,adr) btwrite((dat) | ((mask) & btread(adr)), adr) 57 58 #if defined(dprintk) 59 #undef dprintk 60 #endif 61 #define dprintk(fmt, arg...) \ 62 do { \ 63 if (bt878_debug) \ 64 printk(KERN_DEBUG fmt, ##arg); \ 65 } while (0) 66 67 static void bt878_mem_free(struct bt878 *bt) 68 { 69 if (bt->buf_cpu) { 70 dma_free_coherent(&bt->dev->dev, bt->buf_size, bt->buf_cpu, 71 bt->buf_dma); 72 bt->buf_cpu = NULL; 73 } 74 75 if (bt->risc_cpu) { 76 dma_free_coherent(&bt->dev->dev, bt->risc_size, bt->risc_cpu, 77 bt->risc_dma); 78 bt->risc_cpu = NULL; 79 } 80 } 81 82 static int bt878_mem_alloc(struct bt878 *bt) 83 { 84 if (!bt->buf_cpu) { 85 bt->buf_size = 128 * 1024; 86 87 bt->buf_cpu = dma_alloc_coherent(&bt->dev->dev, bt->buf_size, 88 &bt->buf_dma, GFP_KERNEL); 89 if (!bt->buf_cpu) 90 return -ENOMEM; 91 } 92 93 if (!bt->risc_cpu) { 94 bt->risc_size = PAGE_SIZE; 95 bt->risc_cpu = dma_alloc_coherent(&bt->dev->dev, bt->risc_size, 96 &bt->risc_dma, GFP_KERNEL); 97 if (!bt->risc_cpu) { 98 bt878_mem_free(bt); 99 return -ENOMEM; 100 } 101 } 102 103 return 0; 104 } 105 106 /* RISC instructions */ 107 #define RISC_WRITE (0x01 << 28) 108 #define RISC_JUMP (0x07 << 28) 109 #define RISC_SYNC (0x08 << 28) 110 111 /* RISC bits */ 112 #define RISC_WR_SOL (1 << 27) 113 #define RISC_WR_EOL (1 << 26) 114 #define RISC_IRQ (1 << 24) 115 #define RISC_STATUS(status) ((((~status) & 0x0F) << 20) | ((status & 0x0F) << 16)) 116 #define RISC_SYNC_RESYNC (1 << 15) 117 #define RISC_SYNC_FM1 0x06 118 #define RISC_SYNC_VRO 0x0C 119 120 #define RISC_FLUSH() bt->risc_pos = 0 121 #define RISC_INSTR(instr) bt->risc_cpu[bt->risc_pos++] = cpu_to_le32(instr) 122 123 static int bt878_make_risc(struct bt878 *bt) 124 { 125 bt->block_bytes = bt->buf_size >> 4; 126 bt->block_count = 1 << 4; 127 bt->line_bytes = bt->block_bytes; 128 bt->line_count = bt->block_count; 129 130 while (bt->line_bytes > 4095) { 131 bt->line_bytes >>= 1; 132 bt->line_count <<= 1; 133 } 134 135 if (bt->line_count > 255) { 136 printk(KERN_ERR "bt878: buffer size error!\n"); 137 return -EINVAL; 138 } 139 return 0; 140 } 141 142 143 static void bt878_risc_program(struct bt878 *bt, u32 op_sync_orin) 144 { 145 u32 buf_pos = 0; 146 u32 line; 147 148 RISC_FLUSH(); 149 RISC_INSTR(RISC_SYNC | RISC_SYNC_FM1 | op_sync_orin); 150 RISC_INSTR(0); 151 152 dprintk("bt878: risc len lines %u, bytes per line %u\n", 153 bt->line_count, bt->line_bytes); 154 for (line = 0; line < bt->line_count; line++) { 155 // At the beginning of every block we issue an IRQ with previous (finished) block number set 156 if (!(buf_pos % bt->block_bytes)) 157 RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL | 158 RISC_IRQ | 159 RISC_STATUS(((buf_pos / 160 bt->block_bytes) + 161 (bt->block_count - 162 1)) % 163 bt->block_count) | bt-> 164 line_bytes); 165 else 166 RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL | 167 bt->line_bytes); 168 RISC_INSTR(bt->buf_dma + buf_pos); 169 buf_pos += bt->line_bytes; 170 } 171 172 RISC_INSTR(RISC_SYNC | op_sync_orin | RISC_SYNC_VRO); 173 RISC_INSTR(0); 174 175 RISC_INSTR(RISC_JUMP); 176 RISC_INSTR(bt->risc_dma); 177 178 btwrite((bt->line_count << 16) | bt->line_bytes, BT878_APACK_LEN); 179 } 180 181 /*****************************/ 182 /* Start/Stop grabbing funcs */ 183 /*****************************/ 184 185 void bt878_start(struct bt878 *bt, u32 controlreg, u32 op_sync_orin, 186 u32 irq_err_ignore) 187 { 188 u32 int_mask; 189 190 dprintk("bt878 debug: bt878_start (ctl=%8.8x)\n", controlreg); 191 /* complete the writing of the risc dma program now we have 192 * the card specifics 193 */ 194 bt878_risc_program(bt, op_sync_orin); 195 controlreg &= ~0x1f; 196 controlreg |= 0x1b; 197 198 btwrite(bt->risc_dma, BT878_ARISC_START); 199 200 /* original int mask had : 201 * 6 2 8 4 0 202 * 1111 1111 1000 0000 0000 203 * SCERR|OCERR|PABORT|RIPERR|FDSR|FTRGT|FBUS|RISCI 204 * Hacked for DST to: 205 * SCERR | OCERR | FDSR | FTRGT | FBUS | RISCI 206 */ 207 int_mask = BT878_ASCERR | BT878_AOCERR | BT878_APABORT | 208 BT878_ARIPERR | BT878_APPERR | BT878_AFDSR | BT878_AFTRGT | 209 BT878_AFBUS | BT878_ARISCI; 210 211 212 /* ignore pesky bits */ 213 int_mask &= ~irq_err_ignore; 214 215 btwrite(int_mask, BT878_AINT_MASK); 216 btwrite(controlreg, BT878_AGPIO_DMA_CTL); 217 } 218 219 void bt878_stop(struct bt878 *bt) 220 { 221 u32 stat; 222 int i = 0; 223 224 dprintk("bt878 debug: bt878_stop\n"); 225 226 btwrite(0, BT878_AINT_MASK); 227 btand(~0x13, BT878_AGPIO_DMA_CTL); 228 229 do { 230 stat = btread(BT878_AINT_STAT); 231 if (!(stat & BT878_ARISC_EN)) 232 break; 233 i++; 234 } while (i < 500); 235 236 dprintk("bt878(%d) debug: bt878_stop, i=%d, stat=0x%8.8x\n", 237 bt->nr, i, stat); 238 } 239 240 EXPORT_SYMBOL(bt878_start); 241 EXPORT_SYMBOL(bt878_stop); 242 243 /*****************************/ 244 /* Interrupt service routine */ 245 /*****************************/ 246 247 static irqreturn_t bt878_irq(int irq, void *dev_id) 248 { 249 u32 stat, astat, mask; 250 int count; 251 struct bt878 *bt; 252 253 bt = (struct bt878 *) dev_id; 254 255 count = 0; 256 while (1) { 257 stat = btread(BT878_AINT_STAT); 258 mask = btread(BT878_AINT_MASK); 259 if (!(astat = (stat & mask))) 260 return IRQ_NONE; /* this interrupt is not for me */ 261 /* dprintk("bt878(%d) debug: irq count %d, stat 0x%8.8x, mask 0x%8.8x\n",bt->nr,count,stat,mask); */ 262 btwrite(astat, BT878_AINT_STAT); /* try to clear interrupt condition */ 263 264 265 if (astat & (BT878_ASCERR | BT878_AOCERR)) { 266 if (bt878_verbose) { 267 printk(KERN_INFO 268 "bt878(%d): irq%s%s risc_pc=%08x\n", 269 bt->nr, 270 (astat & BT878_ASCERR) ? " SCERR" : 271 "", 272 (astat & BT878_AOCERR) ? " OCERR" : 273 "", btread(BT878_ARISC_PC)); 274 } 275 } 276 if (astat & (BT878_APABORT | BT878_ARIPERR | BT878_APPERR)) { 277 if (bt878_verbose) { 278 printk(KERN_INFO 279 "bt878(%d): irq%s%s%s risc_pc=%08x\n", 280 bt->nr, 281 (astat & BT878_APABORT) ? " PABORT" : 282 "", 283 (astat & BT878_ARIPERR) ? " RIPERR" : 284 "", 285 (astat & BT878_APPERR) ? " PPERR" : 286 "", btread(BT878_ARISC_PC)); 287 } 288 } 289 if (astat & (BT878_AFDSR | BT878_AFTRGT | BT878_AFBUS)) { 290 if (bt878_verbose) { 291 printk(KERN_INFO 292 "bt878(%d): irq%s%s%s risc_pc=%08x\n", 293 bt->nr, 294 (astat & BT878_AFDSR) ? " FDSR" : "", 295 (astat & BT878_AFTRGT) ? " FTRGT" : 296 "", 297 (astat & BT878_AFBUS) ? " FBUS" : "", 298 btread(BT878_ARISC_PC)); 299 } 300 } 301 if (astat & BT878_ARISCI) { 302 bt->finished_block = (stat & BT878_ARISCS) >> 28; 303 if (bt->tasklet.callback) 304 tasklet_schedule(&bt->tasklet); 305 break; 306 } 307 count++; 308 if (count > 20) { 309 btwrite(0, BT878_AINT_MASK); 310 printk(KERN_ERR 311 "bt878(%d): IRQ lockup, cleared int mask\n", 312 bt->nr); 313 break; 314 } 315 } 316 return IRQ_HANDLED; 317 } 318 319 int 320 bt878_device_control(struct bt878 *bt, unsigned int cmd, union dst_gpio_packet *mp) 321 { 322 int retval; 323 324 retval = 0; 325 if (mutex_lock_interruptible(&bt->gpio_lock)) 326 return -ERESTARTSYS; 327 /* special gpio signal */ 328 switch (cmd) { 329 case DST_IG_ENABLE: 330 // dprintk("dvb_bt8xx: dst enable mask 0x%02x enb 0x%02x \n", mp->dstg.enb.mask, mp->dstg.enb.enable); 331 retval = bttv_gpio_enable(bt->bttv_nr, 332 mp->enb.mask, 333 mp->enb.enable); 334 break; 335 case DST_IG_WRITE: 336 // dprintk("dvb_bt8xx: dst write gpio mask 0x%02x out 0x%02x\n", mp->dstg.outp.mask, mp->dstg.outp.highvals); 337 retval = bttv_write_gpio(bt->bttv_nr, 338 mp->outp.mask, 339 mp->outp.highvals); 340 341 break; 342 case DST_IG_READ: 343 /* read */ 344 retval = bttv_read_gpio(bt->bttv_nr, &mp->rd.value); 345 // dprintk("dvb_bt8xx: dst read gpio 0x%02x\n", (unsigned)mp->dstg.rd.value); 346 break; 347 case DST_IG_TS: 348 /* Set packet size */ 349 bt->TS_Size = mp->psize; 350 break; 351 352 default: 353 retval = -EINVAL; 354 break; 355 } 356 mutex_unlock(&bt->gpio_lock); 357 return retval; 358 } 359 360 EXPORT_SYMBOL(bt878_device_control); 361 362 #define BROOKTREE_878_DEVICE(vend, dev, name) \ 363 { \ 364 .vendor = PCI_VENDOR_ID_BROOKTREE, \ 365 .device = PCI_DEVICE_ID_BROOKTREE_878, \ 366 .subvendor = (vend), .subdevice = (dev), \ 367 .driver_data = (unsigned long) name \ 368 } 369 370 static const struct pci_device_id bt878_pci_tbl[] = { 371 BROOKTREE_878_DEVICE(0x0071, 0x0101, "Nebula Electronics DigiTV"), 372 BROOKTREE_878_DEVICE(0x1461, 0x0761, "AverMedia AverTV DVB-T 761"), 373 BROOKTREE_878_DEVICE(0x11bd, 0x001c, "Pinnacle PCTV Sat"), 374 BROOKTREE_878_DEVICE(0x11bd, 0x0026, "Pinnacle PCTV SAT CI"), 375 BROOKTREE_878_DEVICE(0x1822, 0x0001, "Twinhan VisionPlus DVB"), 376 BROOKTREE_878_DEVICE(0x270f, 0xfc00, 377 "ChainTech digitop DST-1000 DVB-S"), 378 BROOKTREE_878_DEVICE(0x1461, 0x0771, "AVermedia AverTV DVB-T 771"), 379 BROOKTREE_878_DEVICE(0x18ac, 0xdb10, "DViCO FusionHDTV DVB-T Lite"), 380 BROOKTREE_878_DEVICE(0x18ac, 0xdb11, "Ultraview DVB-T Lite"), 381 BROOKTREE_878_DEVICE(0x18ac, 0xd500, "DViCO FusionHDTV 5 Lite"), 382 BROOKTREE_878_DEVICE(0x7063, 0x2000, "pcHDTV HD-2000 TV"), 383 BROOKTREE_878_DEVICE(0x1822, 0x0026, "DNTV Live! Mini"), 384 { } 385 }; 386 387 MODULE_DEVICE_TABLE(pci, bt878_pci_tbl); 388 389 static const char * card_name(const struct pci_device_id *id) 390 { 391 return id->driver_data ? (const char *)id->driver_data : "Unknown"; 392 } 393 394 /***********************/ 395 /* PCI device handling */ 396 /***********************/ 397 398 static int bt878_probe(struct pci_dev *dev, const struct pci_device_id *pci_id) 399 { 400 int result = 0; 401 unsigned char lat; 402 struct bt878 *bt; 403 unsigned int cardid; 404 405 printk(KERN_INFO "bt878: Bt878 AUDIO function found (%d).\n", 406 bt878_num); 407 if (bt878_num >= BT878_MAX) { 408 printk(KERN_ERR "bt878: Too many devices inserted\n"); 409 return -ENOMEM; 410 } 411 if (pci_enable_device(dev)) 412 return -EIO; 413 414 cardid = dev->subsystem_device << 16; 415 cardid |= dev->subsystem_vendor; 416 417 printk(KERN_INFO "%s: card id=[0x%x],[ %s ] has DVB functions.\n", 418 __func__, cardid, card_name(pci_id)); 419 420 bt = &bt878[bt878_num]; 421 bt->dev = dev; 422 bt->nr = bt878_num; 423 bt->shutdown = 0; 424 425 bt->id = dev->device; 426 bt->irq = dev->irq; 427 bt->bt878_adr = pci_resource_start(dev, 0); 428 if (!request_mem_region(pci_resource_start(dev, 0), 429 pci_resource_len(dev, 0), "bt878")) { 430 result = -EBUSY; 431 goto fail0; 432 } 433 434 bt->revision = dev->revision; 435 pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat); 436 437 438 printk(KERN_INFO "bt878(%d): Bt%x (rev %d) at %02x:%02x.%x, ", 439 bt878_num, bt->id, bt->revision, dev->bus->number, 440 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)); 441 printk("irq: %d, latency: %d, memory: 0x%lx\n", 442 bt->irq, lat, bt->bt878_adr); 443 444 #ifdef __sparc__ 445 bt->bt878_mem = (unsigned char *) bt->bt878_adr; 446 #else 447 bt->bt878_mem = ioremap(bt->bt878_adr, 0x1000); 448 #endif 449 450 /* clear interrupt mask */ 451 btwrite(0, BT848_INT_MASK); 452 453 result = request_irq(bt->irq, bt878_irq, 454 IRQF_SHARED, "bt878", (void *) bt); 455 if (result == -EINVAL) { 456 printk(KERN_ERR "bt878(%d): Bad irq number or handler\n", 457 bt878_num); 458 goto fail1; 459 } 460 if (result == -EBUSY) { 461 printk(KERN_ERR 462 "bt878(%d): IRQ %d busy, change your PnP config in BIOS\n", 463 bt878_num, bt->irq); 464 goto fail1; 465 } 466 if (result < 0) 467 goto fail1; 468 469 pci_set_master(dev); 470 pci_set_drvdata(dev, bt); 471 472 if ((result = bt878_mem_alloc(bt))) { 473 printk(KERN_ERR "bt878: failed to allocate memory!\n"); 474 goto fail2; 475 } 476 477 bt878_make_risc(bt); 478 btwrite(0, BT878_AINT_MASK); 479 bt878_num++; 480 481 if (!bt->tasklet.func) 482 tasklet_disable(&bt->tasklet); 483 484 return 0; 485 486 fail2: 487 free_irq(bt->irq, bt); 488 fail1: 489 release_mem_region(pci_resource_start(bt->dev, 0), 490 pci_resource_len(bt->dev, 0)); 491 fail0: 492 pci_disable_device(dev); 493 return result; 494 } 495 496 static void bt878_remove(struct pci_dev *pci_dev) 497 { 498 u8 command; 499 struct bt878 *bt = pci_get_drvdata(pci_dev); 500 501 if (bt878_verbose) 502 printk(KERN_INFO "bt878(%d): unloading\n", bt->nr); 503 504 /* turn off all capturing, DMA and IRQs */ 505 btand(~0x13, BT878_AGPIO_DMA_CTL); 506 507 /* first disable interrupts before unmapping the memory! */ 508 btwrite(0, BT878_AINT_MASK); 509 btwrite(~0U, BT878_AINT_STAT); 510 511 /* disable PCI bus-mastering */ 512 pci_read_config_byte(bt->dev, PCI_COMMAND, &command); 513 /* Should this be &=~ ?? */ 514 command &= ~PCI_COMMAND_MASTER; 515 pci_write_config_byte(bt->dev, PCI_COMMAND, command); 516 517 free_irq(bt->irq, bt); 518 printk(KERN_DEBUG "bt878_mem: 0x%p.\n", bt->bt878_mem); 519 if (bt->bt878_mem) 520 iounmap(bt->bt878_mem); 521 522 release_mem_region(pci_resource_start(bt->dev, 0), 523 pci_resource_len(bt->dev, 0)); 524 /* wake up any waiting processes 525 because shutdown flag is set, no new processes (in this queue) 526 are expected 527 */ 528 bt->shutdown = 1; 529 bt878_mem_free(bt); 530 531 pci_disable_device(pci_dev); 532 return; 533 } 534 535 static struct pci_driver bt878_pci_driver = { 536 .name = "bt878", 537 .id_table = bt878_pci_tbl, 538 .probe = bt878_probe, 539 .remove = bt878_remove, 540 }; 541 542 /*******************************/ 543 /* Module management functions */ 544 /*******************************/ 545 546 static int __init bt878_init_module(void) 547 { 548 bt878_num = 0; 549 550 printk(KERN_INFO "bt878: AUDIO driver version %d.%d.%d loaded\n", 551 (BT878_VERSION_CODE >> 16) & 0xff, 552 (BT878_VERSION_CODE >> 8) & 0xff, 553 BT878_VERSION_CODE & 0xff); 554 555 return pci_register_driver(&bt878_pci_driver); 556 } 557 558 static void __exit bt878_cleanup_module(void) 559 { 560 pci_unregister_driver(&bt878_pci_driver); 561 } 562 563 module_init(bt878_init_module); 564 module_exit(bt878_cleanup_module); 565 566 MODULE_LICENSE("GPL"); 567