568 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * bt878.c: part of the driver for the Pinnacle PCTV Sat DVB PCI card4 *5 * Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@htp-tel.de>6 *7 * large parts based on the bttv driver8 * 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 36static unsigned int bt878_verbose = 1;37static unsigned int bt878_debug;38 39module_param_named(verbose, bt878_verbose, int, 0444);40MODULE_PARM_DESC(verbose,41 "verbose startup messages, default is 1 (yes)");42module_param_named(debug, bt878_debug, int, 0644);43MODULE_PARM_DESC(debug, "Turn on/off debugging, default is 0 (off).");44 45int bt878_num;46struct bt878 bt878[BT878_MAX];47 48EXPORT_SYMBOL(bt878_num);49EXPORT_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 dprintk60#endif61#define dprintk(fmt, arg...) \62 do { \63 if (bt878_debug) \64 printk(KERN_DEBUG fmt, ##arg); \65 } while (0)66 67static 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 82static 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 0x06118#define RISC_SYNC_VRO 0x0C119 120#define RISC_FLUSH() bt->risc_pos = 0121#define RISC_INSTR(instr) bt->risc_cpu[bt->risc_pos++] = cpu_to_le32(instr)122 123static 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 143static 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 set156 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 else166 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 185void 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 have192 * the card specifics193 */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 0202 * 1111 1111 1000 0000 0000203 * SCERR|OCERR|PABORT|RIPERR|FDSR|FTRGT|FBUS|RISCI204 * Hacked for DST to:205 * SCERR | OCERR | FDSR | FTRGT | FBUS | RISCI206 */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 219void 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 240EXPORT_SYMBOL(bt878_start);241EXPORT_SYMBOL(bt878_stop);242 243/*****************************/244/* Interrupt service routine */245/*****************************/246 247static 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_INFO268 "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_INFO279 "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_INFO292 "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->bh_work.func)304 queue_work(system_bh_wq, &bt->bh_work);305 break;306 }307 count++;308 if (count > 20) {309 btwrite(0, BT878_AINT_MASK);310 printk(KERN_ERR311 "bt878(%d): IRQ lockup, cleared int mask\n",312 bt->nr);313 break;314 }315 }316 return IRQ_HANDLED;317}318 319int320bt878_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 360EXPORT_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 370static 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 387MODULE_DEVICE_TABLE(pci, bt878_pci_tbl);388 389static 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 398static 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#else447 bt->bt878_mem = ioremap(bt->bt878_adr, 0x1000);448#endif449 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_ERR462 "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->bh_work.func)482 disable_work_sync(&bt->bh_work);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 496static 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 processes525 because shutdown flag is set, no new processes (in this queue)526 are expected527 */528 bt->shutdown = 1;529 bt878_mem_free(bt);530 531 pci_disable_device(pci_dev);532 return;533}534 535static 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 546static 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 558static void __exit bt878_cleanup_module(void)559{560 pci_unregister_driver(&bt878_pci_driver);561}562 563module_init(bt878_init_module);564module_exit(bt878_cleanup_module);565 566MODULE_DESCRIPTION("DVB/ATSC Support for bt878 based TV cards");567MODULE_LICENSE("GPL");568