2 * bt878.c: part of the driver for the Pinnacle PCTV Sat DVB PCI card
4 * Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@t-online.de>
6 * large parts based on the bttv driver
7 * Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)
8 * & Marcus Metzler (mocm@thp.uni-koeln.de)
9 * (c) 1999,2000 Gerd Knorr <kraxel@goldbach.in-berlin.de>
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.
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.
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
30 #include <linux/version.h>
31 #include <linux/module.h>
32 #include <linux/kernel.h>
33 #include <linux/pci.h>
35 #include <linux/ioport.h>
36 #include <asm/pgtable.h>
38 #include <linux/types.h>
39 #include <linux/interrupt.h>
40 #include <linux/kmod.h>
41 #include <linux/vmalloc.h>
42 #include <linux/init.h>
47 #include "dst-bt878.h"
49 #include "dvb_functions.h"
51 /**************************************/
52 /* Miscellaneous utility definitions */
53 /**************************************/
55 unsigned int bt878_verbose = 1;
56 unsigned int bt878_debug = 0;
57 MODULE_PARM(bt878_verbose, "i");
58 MODULE_PARM_DESC(bt878_verbose,
59 "verbose startup messages, default is 1 (yes)");
60 MODULE_PARM(bt878_debug, "i");
61 MODULE_PARM_DESC(bt878_debug, "debug messages, default is 0 (no)");
62 MODULE_LICENSE("GPL");
65 struct bt878 bt878[BT878_MAX];
67 EXPORT_SYMBOL(bt878_debug);
68 EXPORT_SYMBOL(bt878_verbose);
69 EXPORT_SYMBOL(bt878_num);
72 #define btwrite(dat,adr) bmtwrite((dat), (bt->bt878_mem+(adr)))
73 #define btread(adr) bmtread(bt->bt878_mem+(adr))
75 #define btand(dat,adr) btwrite((dat) & btread(adr), adr)
76 #define btor(dat,adr) btwrite((dat) | btread(adr), adr)
77 #define btaor(dat,mask,adr) btwrite((dat) | ((mask) & btread(adr)), adr)
82 #define dprintk if(bt878_debug) printk
84 static void bt878_mem_free(struct bt878 *bt)
87 pci_free_consistent(bt->dev, bt->buf_size, bt->buf_cpu,
93 pci_free_consistent(bt->dev, bt->risc_size, bt->risc_cpu,
99 static int bt878_mem_alloc(struct bt878 *bt)
102 bt->buf_size = 128 * 1024;
105 pci_alloc_consistent(bt->dev, bt->buf_size,
111 memset(bt->buf_cpu, 0, bt->buf_size);
115 bt->risc_size = PAGE_SIZE;
117 pci_alloc_consistent(bt->dev, bt->risc_size,
125 memset(bt->risc_cpu, 0, bt->risc_size);
131 /* RISC instructions */
132 #define RISC_WRITE (0x01 << 28)
133 #define RISC_JUMP (0x07 << 28)
134 #define RISC_SYNC (0x08 << 28)
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
145 #define RISC_FLUSH() bt->risc_pos = 0
146 #define RISC_INSTR(instr) bt->risc_cpu[bt->risc_pos++] = cpu_to_le32(instr)
148 static int bt878_make_risc(struct bt878 *bt)
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;
155 while (bt->line_bytes > 4095) {
156 bt->line_bytes >>= 1;
157 bt->line_count <<= 1;
160 if (bt->line_count > 255) {
161 printk("bt878: buffer size error!\n");
168 static void bt878_risc_program(struct bt878 *bt, u32 op_sync_orin)
174 RISC_INSTR(RISC_SYNC | RISC_SYNC_FM1 | op_sync_orin);
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 |
184 RISC_STATUS(((buf_pos /
188 bt->block_count) | bt->
191 RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
193 RISC_INSTR(bt->buf_dma + buf_pos);
194 buf_pos += bt->line_bytes;
197 RISC_INSTR(RISC_SYNC | op_sync_orin | RISC_SYNC_VRO);
200 RISC_INSTR(RISC_JUMP);
201 RISC_INSTR(bt->risc_dma);
203 btwrite((bt->line_count << 16) | bt->line_bytes, BT878_APACK_LEN);
206 /*****************************/
207 /* Start/Stop grabbing funcs */
208 /*****************************/
210 void bt878_start(struct bt878 *bt, u32 controlreg, u32 op_sync_orin,
215 dprintk("bt878 debug: bt878_start (ctl=%8.8x)\n", controlreg);
216 /* complete the writing of the risc dma program now we have
219 bt878_risc_program(bt, op_sync_orin);
223 btwrite(cpu_to_le32(bt->risc_dma), BT878_ARISC_START);
225 /* original int mask had :
227 * 1111 1111 1000 0000 0000
228 * SCERR|OCERR|PABORT|RIPERR|FDSR|FTRGT|FBUS|RISCI
230 * SCERR | OCERR | FDSR | FTRGT | FBUS | RISCI
232 int_mask = BT878_ASCERR | BT878_AOCERR | BT878_APABORT |
233 BT878_ARIPERR | BT878_APPERR | BT878_AFDSR | BT878_AFTRGT |
234 BT878_AFBUS | BT878_ARISCI;
237 /* ignore pesky bits */
238 int_mask &= ~irq_err_ignore;
240 btwrite(int_mask, BT878_AINT_MASK);
241 btwrite(controlreg, BT878_AGPIO_DMA_CTL);
244 void bt878_stop(struct bt878 *bt)
249 dprintk("bt878 debug: bt878_stop\n");
251 btwrite(0, BT878_AINT_MASK);
252 btand(~0x13, BT878_AGPIO_DMA_CTL);
255 stat = btread(BT878_AINT_STAT);
256 if (!(stat & BT878_ARISC_EN))
261 dprintk("bt878(%d) debug: bt878_stop, i=%d, stat=0x%8.8x\n",
265 EXPORT_SYMBOL(bt878_start);
266 EXPORT_SYMBOL(bt878_stop);
268 /*****************************/
269 /* Interrupt service routine */
270 /*****************************/
272 static irqreturn_t bt878_irq(int irq, void *dev_id, struct pt_regs *regs)
274 u32 stat, astat, mask;
278 bt = (struct bt878 *) dev_id;
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 interupt condition */
290 if (astat & (BT878_ASCERR | BT878_AOCERR)) {
292 printk("bt878(%d): irq%s%s risc_pc=%08x\n",
294 (astat & BT878_ASCERR) ? " SCERR" :
296 (astat & BT878_AOCERR) ? " OCERR" :
297 "", btread(BT878_ARISC_PC));
300 if (astat & (BT878_APABORT | BT878_ARIPERR | BT878_APPERR)) {
303 ("bt878(%d): irq%s%s%s risc_pc=%08x\n",
305 (astat & BT878_APABORT) ? " PABORT" :
307 (astat & BT878_ARIPERR) ? " RIPERR" :
309 (astat & BT878_APPERR) ? " PPERR" :
310 "", btread(BT878_ARISC_PC));
313 if (astat & (BT878_AFDSR | BT878_AFTRGT | BT878_AFBUS)) {
316 ("bt878(%d): irq%s%s%s risc_pc=%08x\n",
318 (astat & BT878_AFDSR) ? " FDSR" : "",
319 (astat & BT878_AFTRGT) ? " FTRGT" :
321 (astat & BT878_AFBUS) ? " FBUS" : "",
322 btread(BT878_ARISC_PC));
325 if (astat & BT878_ARISCI) {
326 bt->finished_block = (stat & BT878_ARISCS) >> 28;
327 tasklet_schedule(&bt->tasklet);
332 btwrite(0, BT878_AINT_MASK);
334 "bt878(%d): IRQ lockup, cleared int mask\n",
342 extern int bttv_gpio_enable(unsigned int card, unsigned long mask, unsigned long data);
343 extern int bttv_read_gpio(unsigned int card, unsigned long *data);
344 extern int bttv_write_gpio(unsigned int card, unsigned long mask, unsigned long data);
347 bt878_device_control(struct bt878 *bt, unsigned int cmd, union dst_gpio_packet *mp)
352 if (down_interruptible (&bt->gpio_lock))
354 /* special gpio signal */
357 // dprintk("dvb_bt8xx: dst enable mask 0x%02x enb 0x%02x \n", mp->dstg.enb.mask, mp->dstg.enb.enable);
358 retval = bttv_gpio_enable(bt->bttv_nr,
363 // dprintk("dvb_bt8xx: dst write gpio mask 0x%02x out 0x%02x\n", mp->dstg.outp.mask, mp->dstg.outp.highvals);
364 retval = bttv_write_gpio(bt->bttv_nr,
371 retval = bttv_read_gpio(bt->bttv_nr, &mp->rd.value);
372 // dprintk("dvb_bt8xx: dst read gpio 0x%02x\n", (unsigned)mp->dstg.rd.value);
375 /* Set packet size */
376 bt->TS_Size = mp->psize;
387 EXPORT_SYMBOL(bt878_device_control);
389 struct bt878 *bt878_find_by_dvb_adap(struct dvb_adapter *adap)
391 unsigned int card_nr;
393 printk("bt878 find by dvb adap: checking \"%s\"\n",adap->name);
394 for (card_nr = 0; card_nr < bt878_num; card_nr++) {
395 if (bt878[card_nr].adap_ptr == adap)
396 return &bt878[card_nr];
398 printk("bt878 find by dvb adap: NOT found \"%s\"\n",adap->name);
402 EXPORT_SYMBOL(bt878_find_by_dvb_adap);
404 /***********************/
405 /* PCI device handling */
406 /***********************/
408 static int __devinit bt878_probe(struct pci_dev *dev,
409 const struct pci_device_id *pci_id)
414 #if defined(__powerpc__)
418 printk(KERN_INFO "bt878: Bt878 AUDIO function found (%d).\n",
421 bt = &bt878[bt878_num];
426 bt->id = dev->device;
428 bt->bt878_adr = pci_resource_start(dev, 0);
429 if (pci_enable_device(dev))
431 if (!request_mem_region(pci_resource_start(dev, 0),
432 pci_resource_len(dev, 0), "bt878")) {
436 pci_read_config_byte(dev, PCI_CLASS_REVISION, &bt->revision);
437 pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
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);
445 #if defined(__powerpc__)
446 /* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
447 /* response on cards with no firmware is not enabled by OF */
448 pci_read_config_dword(dev, PCI_COMMAND, &cmd);
449 cmd = (cmd | PCI_COMMAND_MEMORY);
450 pci_write_config_dword(dev, PCI_COMMAND, cmd);
454 bt->bt878_mem = (unsigned char *) bt->bt878_adr;
456 bt->bt878_mem = ioremap(bt->bt878_adr, 0x1000);
459 /* clear interrupt mask */
460 btwrite(0, BT848_INT_MASK);
462 result = request_irq(bt->irq, bt878_irq,
463 SA_SHIRQ | SA_INTERRUPT, "bt878",
465 if (result == -EINVAL) {
466 printk(KERN_ERR "bt878(%d): Bad irq number or handler\n",
470 if (result == -EBUSY) {
472 "bt878(%d): IRQ %d busy, change your PnP config in BIOS\n",
480 pci_set_drvdata(dev, bt);
482 /* if(init_bt878(btv) < 0) {
488 if ((result = bt878_mem_alloc(bt))) {
489 printk("bt878: failed to allocate memory!\n");
494 btwrite(0, BT878_AINT_MASK);
500 free_irq(bt->irq, bt);
502 release_mem_region(pci_resource_start(bt->dev, 0),
503 pci_resource_len(bt->dev, 0));
507 static void __devexit bt878_remove(struct pci_dev *pci_dev)
510 struct bt878 *bt = pci_get_drvdata(pci_dev);
513 printk("bt878(%d): unloading\n", bt->nr);
515 /* turn off all capturing, DMA and IRQs */
516 btand(~13, BT878_AGPIO_DMA_CTL);
518 /* first disable interrupts before unmapping the memory! */
519 btwrite(0, BT878_AINT_MASK);
520 btwrite(~0x0UL, BT878_AINT_STAT);
522 /* disable PCI bus-mastering */
523 pci_read_config_byte(bt->dev, PCI_COMMAND, &command);
524 /* Should this be &=~ ?? */
525 command &= ~PCI_COMMAND_MASTER;
526 pci_write_config_byte(bt->dev, PCI_COMMAND, command);
528 free_irq(bt->irq, bt);
529 printk(KERN_DEBUG "bt878_mem: 0x%p.\n", bt->bt878_mem);
531 iounmap(bt->bt878_mem);
533 release_mem_region(pci_resource_start(bt->dev, 0),
534 pci_resource_len(bt->dev, 0));
535 /* wake up any waiting processes
536 because shutdown flag is set, no new processes (in this queue)
542 pci_set_drvdata(pci_dev, NULL);
546 static struct pci_device_id bt878_pci_tbl[] __devinitdata = {
547 {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BROOKTREE_878,
548 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
552 MODULE_DEVICE_TABLE(pci, bt878_pci_tbl);
554 static struct pci_driver bt878_pci_driver = {
556 .id_table = bt878_pci_tbl,
557 .probe = bt878_probe,
558 .remove = bt878_remove,
561 static int bt878_pci_driver_registered = 0;
563 /* This will be used later by dvb-bt8xx to only use the audio
564 * dma of certain cards */
565 int bt878_find_audio_dma(void)
567 // pci_register_driver(&bt878_pci_driver);
568 bt878_pci_driver_registered = 1;
572 EXPORT_SYMBOL(bt878_find_audio_dma);
574 /*******************************/
575 /* Module management functions */
576 /*******************************/
578 int bt878_init_module(void)
581 bt878_pci_driver_registered = 0;
583 printk(KERN_INFO "bt878: AUDIO driver version %d.%d.%d loaded\n",
584 (BT878_VERSION_CODE >> 16) & 0xff,
585 (BT878_VERSION_CODE >> 8) & 0xff,
586 BT878_VERSION_CODE & 0xff);
588 bt878_check_chipset();
590 /* later we register inside of bt878_find_audio_dma
591 * because we may want to ignore certain cards */
592 bt878_pci_driver_registered = 1;
593 return pci_module_init(&bt878_pci_driver);
596 void bt878_cleanup_module(void)
598 if (bt878_pci_driver_registered) {
599 bt878_pci_driver_registered = 0;
600 pci_unregister_driver(&bt878_pci_driver);
605 EXPORT_SYMBOL(bt878_init_module);
606 EXPORT_SYMBOL(bt878_cleanup_module);
607 module_init(bt878_init_module);
608 module_exit(bt878_cleanup_module);