Annotation of sys/dev/pci/bktr/bktr_os.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: bktr_os.c,v 1.27 2007/06/18 07:31:14 jakemsr Exp $ */
2: /* $FreeBSD: src/sys/dev/bktr/bktr_os.c,v 1.20 2000/10/20 08:16:53 roger Exp $ */
3:
4: /*
5: * This is part of the Driver for Video Capture Cards (Frame grabbers)
6: * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
7: * chipset.
8: * Copyright Roger Hardiman and Amancio Hasty.
9: *
10: * bktr_os : This has all the Operating System dependant code,
11: * probe/attach and open/close/ioctl/read/mmap
12: * memory allocation
13: * PCI bus interfacing
14: *
15: *
16: */
17:
18: /*
19: * 1. Redistributions of source code must retain the
20: * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
21: * All rights reserved.
22: *
23: * Redistribution and use in source and binary forms, with or without
24: * modification, are permitted provided that the following conditions
25: * are met:
26: * 1. Redistributions of source code must retain the above copyright
27: * notice, this list of conditions and the following disclaimer.
28: * 2. Redistributions in binary form must reproduce the above copyright
29: * notice, this list of conditions and the following disclaimer in the
30: * documentation and/or other materials provided with the distribution.
31: * 3. All advertising materials mentioning features or use of this software
32: * must display the following acknowledgement:
33: * This product includes software developed by Amancio Hasty and
34: * Roger Hardiman
35: * 4. The name of the author may not be used to endorse or promote products
36: * derived from this software without specific prior written permission.
37: *
38: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
39: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
40: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
41: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
42: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
43: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
44: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
45: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
46: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
47: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
48: * POSSIBILITY OF SUCH DAMAGE.
49: */
50:
51: #define FIFO_RISC_DISABLED 0
52: #define ALL_INTS_DISABLED 0
53:
54: #include "radio.h"
55:
56: #include <sys/param.h>
57: #include <sys/systm.h>
58: #include <sys/conf.h>
59: #include <sys/uio.h>
60: #include <sys/kernel.h>
61: #include <sys/signalvar.h>
62: #include <sys/mman.h>
63: #include <sys/poll.h>
64: #include <sys/selinfo.h>
65: #include <sys/vnode.h>
66: #if NRADIO > 0
67: #include <sys/radioio.h>
68: #include <dev/radio_if.h>
69: #endif
70:
71: #include <uvm/uvm_extern.h>
72:
73: #include <sys/device.h>
74: #include <dev/pci/pcivar.h>
75: #include <dev/pci/pcireg.h>
76: #include <dev/pci/pcidevs.h>
77:
78: #ifdef BKTR_DEBUG
79: int bktr_debug = 1;
80: #define DPR(x) (bktr_debug ? printf x : 0)
81: #else
82: #define DPR(x)
83: #endif
84:
85: #include <dev/ic/bt8xx.h> /* OpenBSD location for .h files */
86: #include <dev/pci/bktr/bktr_reg.h>
87: #include <dev/pci/bktr/bktr_tuner.h>
88: #include <dev/pci/bktr/bktr_card.h>
89: #include <dev/pci/bktr/bktr_audio.h>
90: #include <dev/pci/bktr/bktr_core.h>
91: #include <dev/pci/bktr/bktr_os.h>
92:
93: #define IPL_VIDEO IPL_BIO /* XXX */
94:
95: static int bktr_intr(void *arg) { return common_bktr_intr(arg); }
96:
97: #define bktr_open bktropen
98: #define bktr_close bktrclose
99: #define bktr_read bktrread
100: #define bktr_write bktrwrite
101: #define bktr_ioctl bktrioctl
102: #define bktr_mmap bktrmmap
103:
104: int bktr_open(dev_t, int, int, struct proc *);
105: int bktr_close(dev_t, int, int, struct proc *);
106: int bktr_read(dev_t, struct uio *, int);
107: int bktr_write(dev_t, struct uio *, int);
108: int bktr_ioctl(dev_t, ioctl_cmd_t, caddr_t, int, struct proc *);
109: paddr_t bktr_mmap(dev_t, off_t, int);
110:
111: static int bktr_probe(struct device *, void *, void *);
112: static void bktr_attach(struct device *, struct device *, void *);
113:
114: struct cfattach bktr_ca = {
115: sizeof(struct bktr_softc), bktr_probe, bktr_attach
116: };
117:
118: struct cfdriver bktr_cd = {
119: NULL, "bktr", DV_DULL
120: };
121:
122: #if NRADIO > 0
123: /* for radio(4) */
124: int bktr_get_info(void *, struct radio_info *);
125: int bktr_set_info(void *, struct radio_info *);
126:
127: struct radio_hw_if bktr_hw_if = {
128: NULL, /* open */
129: NULL, /* close */
130: bktr_get_info,
131: bktr_set_info,
132: NULL /* search */
133: };
134: #endif
135:
136: int
137: bktr_probe(parent, match, aux)
138: struct device *parent;
139: void *match;
140: void *aux;
141: {
142: struct pci_attach_args *pa = aux;
143:
144: if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_BROOKTREE &&
145: (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT848 ||
146: PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT849 ||
147: PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT878 ||
148: PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT879))
149: return 1;
150:
151: return 0;
152: }
153:
154:
155: /*
156: * the attach routine.
157: */
158: static void
159: bktr_attach(struct device *parent, struct device *self, void *aux)
160: {
161: bktr_ptr_t bktr;
162: u_int latency;
163: u_int fun;
164: unsigned int rev;
165: struct pci_attach_args *pa = aux;
166: pci_intr_handle_t ih;
167: const char *intrstr;
168: int retval;
169: int unit;
170:
171: bktr = (bktr_ptr_t)self;
172: unit = bktr->bktr_dev.dv_unit;
173: bktr->dmat = pa->pa_dmat;
174:
175: /* Enabled Bus Master
176: XXX: check if all old DMA is stopped first (e.g. after warm
177: boot) */
178: fun = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
179: DPR((" fun=%b", fun, PCI_COMMAND_STATUS_BITS));
180: pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
181: fun | PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_MASTER_ENABLE |
182: PCI_COMMAND_BACKTOBACK_ENABLE);
183:
184: /*
185: * map memory
186: */
187: retval = pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_MEM |
188: PCI_MAPREG_MEM_TYPE_32BIT, 0, &bktr->memt, &bktr->memh, NULL,
189: &bktr->obmemsz, 0);
190: DPR(("pci_mapreg_map: memt %lx, memh %lx, size %x\n",
191: bktr->memt, bktr->memh, bktr->obmemsz));
192: if (retval) {
193: printf("%s: couldn't map memory\n", bktr_name(bktr));
194: return;
195: }
196:
197: /*
198: * Disable the brooktree device
199: */
200: OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
201: OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
202:
203: /*
204: * map interrupt
205: */
206: if (pci_intr_map(pa, &ih)) {
207: printf("%s: couldn't map interrupt\n",
208: bktr_name(bktr));
209: return;
210: }
211: intrstr = pci_intr_string(pa->pa_pc, ih);
212: bktr->ih = pci_intr_establish(pa->pa_pc, ih, IPL_VIDEO,
213: bktr_intr, bktr, bktr->bktr_dev.dv_xname);
214: if (bktr->ih == NULL) {
215: printf("%s: couldn't establish interrupt",
216: bktr_name(bktr));
217: if (intrstr != NULL)
218: printf(" at %s", intrstr);
219: printf("\n");
220: return;
221: }
222: if (intrstr != NULL)
223: printf(": %s\n", intrstr);
224:
225: /*
226: * PCI latency timer. 32 is a good value for 4 bus mastering slots, if
227: * you have more than four, then 16 would probably be a better value.
228: */
229: #ifndef BROOKTREE_DEF_LATENCY_VALUE
230: #define BROOKTREE_DEF_LATENCY_VALUE 0x10
231: #endif
232: latency = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_LATENCY_TIMER);
233: latency = (latency >> 8) & 0xff;
234:
235: if (!latency) {
236: if (bootverbose) {
237: printf("%s: PCI bus latency was 0 changing to %d",
238: bktr_name(bktr), BROOKTREE_DEF_LATENCY_VALUE);
239: }
240: latency = BROOKTREE_DEF_LATENCY_VALUE;
241: pci_conf_write(pa->pa_pc, pa->pa_tag,
242: PCI_LATENCY_TIMER, latency<<8);
243: }
244:
245:
246: /* read the pci id and determine the card type */
247: fun = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ID_REG);
248: rev = PCI_REVISION(pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG));
249:
250: common_bktr_attach(bktr, unit, fun, rev);
251:
252: #if NRADIO > 0
253: if (bktr->card.tuner->pllControl[3] != 0x00)
254: radio_attach_mi(&bktr_hw_if, bktr, &bktr->bktr_dev);
255: #endif
256: }
257:
258:
259: /*
260: * Special Memory Allocation
261: */
262: vaddr_t
263: get_bktr_mem(bktr, dmapp, size)
264: bktr_ptr_t bktr;
265: bus_dmamap_t *dmapp;
266: unsigned int size;
267: {
268: bus_dma_tag_t dmat = bktr->dmat;
269: bus_dma_segment_t seg;
270: bus_size_t align;
271: int rseg;
272: caddr_t kva;
273:
274: /*
275: * Allocate a DMA area
276: */
277: align = 1 << 24;
278: if (bus_dmamem_alloc(dmat, size, align, 0, &seg, 1,
279: &rseg, BUS_DMA_NOWAIT)) {
280: align = PAGE_SIZE;
281: if (bus_dmamem_alloc(dmat, size, align, 0, &seg, 1,
282: &rseg, BUS_DMA_NOWAIT)) {
283: printf("%s: Unable to dmamem_alloc of %d bytes\n",
284: bktr_name(bktr), size);
285: return 0;
286: }
287: }
288: if (bus_dmamem_map(dmat, &seg, rseg, size,
289: &kva, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
290: printf("%s: Unable to dmamem_map of %d bytes\n",
291: bktr_name(bktr), size);
292: bus_dmamem_free(dmat, &seg, rseg);
293: return 0;
294: }
295: /*
296: * Create and locd the DMA map for the DMA area
297: */
298: if (bus_dmamap_create(dmat, size, 1, size, 0, BUS_DMA_NOWAIT, dmapp)) {
299: printf("%s: Unable to dmamap_create of %d bytes\n",
300: bktr_name(bktr), size);
301: bus_dmamem_unmap(dmat, kva, size);
302: bus_dmamem_free(dmat, &seg, rseg);
303: return 0;
304: }
305: if (bus_dmamap_load(dmat, *dmapp, kva, size, NULL, BUS_DMA_NOWAIT)) {
306: printf("%s: Unable to dmamap_load of %d bytes\n",
307: bktr_name(bktr), size);
308: bus_dmamem_unmap(dmat, kva, size);
309: bus_dmamem_free(dmat, &seg, rseg);
310: bus_dmamap_destroy(dmat, *dmapp);
311: return 0;
312: }
313: return (vaddr_t)kva;
314: }
315:
316: void
317: free_bktr_mem(bktr, dmap, kva)
318: bktr_ptr_t bktr;
319: bus_dmamap_t dmap;
320: vaddr_t kva;
321: {
322: bus_dma_tag_t dmat = bktr->dmat;
323:
324: bus_dmamem_unmap(dmat, (caddr_t)kva, dmap->dm_mapsize);
325: bus_dmamem_free(dmat, dmap->dm_segs, 1);
326: bus_dmamap_destroy(dmat, dmap);
327: }
328:
329:
330: /*---------------------------------------------------------
331: **
332: ** BrookTree 848 character device driver routines
333: **
334: **---------------------------------------------------------
335: */
336:
337:
338: #define VIDEO_DEV 0x00
339: #define TUNER_DEV 0x01
340: #define VBI_DEV 0x02
341:
342: #define UNIT(x) (minor((x) & 0x0f))
343: #define FUNCTION(x) (minor((x >> 4) & 0x0f))
344:
345: /*
346: *
347: */
348: int
349: bktr_open(dev_t dev, int flags, int fmt, struct proc *p)
350: {
351: bktr_ptr_t bktr;
352: int unit;
353:
354: unit = UNIT(dev);
355:
356: /* unit out of range */
357: if ((unit >= bktr_cd.cd_ndevs) || (bktr_cd.cd_devs[unit] == NULL))
358: return(ENXIO);
359:
360: bktr = bktr_cd.cd_devs[unit];
361:
362: if (!(bktr->flags & METEOR_INITALIZED)) /* device not found */
363: return(ENXIO);
364:
365: switch (FUNCTION(dev)) {
366: case VIDEO_DEV:
367: return(video_open(bktr));
368: case TUNER_DEV:
369: return(tuner_open(bktr));
370: case VBI_DEV:
371: return(vbi_open(bktr));
372: }
373:
374: return(ENXIO);
375: }
376:
377:
378: /*
379: *
380: */
381: int
382: bktr_close(dev_t dev, int flags, int fmt, struct proc *p)
383: {
384: bktr_ptr_t bktr;
385: int unit;
386:
387: unit = UNIT(dev);
388:
389: bktr = bktr_cd.cd_devs[unit];
390:
391: switch (FUNCTION(dev)) {
392: case VIDEO_DEV:
393: return(video_close(bktr));
394: case TUNER_DEV:
395: return(tuner_close(bktr));
396: case VBI_DEV:
397: return(vbi_close(bktr));
398: }
399:
400: return(ENXIO);
401: }
402:
403: /*
404: *
405: */
406: int
407: bktr_read(dev_t dev, struct uio *uio, int ioflag)
408: {
409: bktr_ptr_t bktr;
410: int unit;
411:
412: unit = UNIT(dev);
413:
414: bktr = bktr_cd.cd_devs[unit];
415:
416: switch (FUNCTION(dev)) {
417: case VIDEO_DEV:
418: return(video_read(bktr, unit, dev, uio));
419: case VBI_DEV:
420: return(vbi_read(bktr, uio, ioflag));
421: }
422:
423: return(ENXIO);
424: }
425:
426:
427: /*
428: *
429: */
430: int
431: bktr_write(dev_t dev, struct uio *uio, int ioflag)
432: {
433: /* operation not supported */
434: return(EOPNOTSUPP);
435: }
436:
437: /*
438: *
439: */
440: int
441: bktr_ioctl(dev_t dev, ioctl_cmd_t cmd, caddr_t arg, int flag, struct proc* pr)
442: {
443: bktr_ptr_t bktr;
444: int unit;
445:
446: unit = UNIT(dev);
447:
448: bktr = bktr_cd.cd_devs[unit];
449:
450: if (bktr->bigbuf == 0) /* no frame buffer allocated (ioctl failed) */
451: return(ENOMEM);
452:
453: switch (FUNCTION(dev)) {
454: case VIDEO_DEV:
455: return(video_ioctl(bktr, unit, cmd, arg, pr));
456: case TUNER_DEV:
457: return(tuner_ioctl(bktr, unit, cmd, arg, pr));
458: }
459:
460: return(ENXIO);
461: }
462:
463: /*
464: *
465: */
466: paddr_t
467: bktr_mmap(dev_t dev, off_t offset, int nprot)
468: {
469: int unit;
470: bktr_ptr_t bktr;
471:
472: unit = UNIT(dev);
473:
474: if (FUNCTION(dev) > 0) /* only allow mmap on /dev/bktr[n] */
475: return(-1);
476:
477: bktr = bktr_cd.cd_devs[unit];
478:
479: if ((vaddr_t)offset < 0)
480: return(-1);
481:
482: if ((vaddr_t)offset >= bktr->alloc_pages * PAGE_SIZE)
483: return(-1);
484:
485: return (bus_dmamem_mmap(bktr->dmat, bktr->dm_mem->dm_segs, 1,
486: (vaddr_t)offset, nprot, BUS_DMA_WAITOK));
487: }
488:
489: #if NRADIO > 0
490: int
491: bktr_set_info(void *v, struct radio_info *ri)
492: {
493: struct bktr_softc *sc = v;
494: struct TVTUNER *tv = &sc->tuner;
495: u_int32_t freq;
496: u_int32_t chan;
497:
498: if (ri->mute) {
499: /* mute the audio stream by switching the mux */
500: set_audio(sc, AUDIO_MUTE);
501: } else {
502: /* unmute the audio stream */
503: set_audio(sc, AUDIO_UNMUTE);
504: init_audio_devices(sc);
505: }
506:
507: set_audio(sc, AUDIO_INTERN); /* use internal audio */
508: temp_mute(sc, TRUE);
509:
510: if (ri->tuner_mode == RADIO_TUNER_MODE_TV) {
511: if (ri->chan) {
512: if (ri->chan < MIN_TV_CHAN)
513: ri->chan = MIN_TV_CHAN;
514: if (ri->chan > MAX_TV_CHAN)
515: ri->chan = MAX_TV_CHAN;
516:
517: chan = ri->chan;
518: ri->chan = tv_channel(sc, chan);
519: tv->tuner_mode = BT848_TUNER_MODE_TV;
520: } else {
521: ri->chan = tv->channel;
522: }
523: } else {
524: if (ri->freq) {
525: if (ri->freq < MIN_FM_FREQ)
526: ri->freq = MIN_FM_FREQ;
527: if (ri->freq > MAX_FM_FREQ)
528: ri->freq = MAX_FM_FREQ;
529:
530: freq = ri->freq / 10;
531: ri->freq = tv_freq(sc, freq, FM_RADIO_FREQUENCY) * 10;
532: tv->tuner_mode = BT848_TUNER_MODE_RADIO;
533: } else {
534: ri->freq = tv->frequency;
535: }
536: }
537:
538: if (ri->chnlset >= CHNLSET_MIN && ri->chnlset <= CHNLSET_MAX)
539: tv->chnlset = ri->chnlset;
540: else
541: tv->chnlset = DEFAULT_CHNLSET;
542:
543: temp_mute(sc, FALSE);
544:
545: return (0);
546: }
547:
548: int
549: bktr_get_info(void *v, struct radio_info *ri)
550: {
551: struct bktr_softc *sc = v;
552: struct TVTUNER *tv = &sc->tuner;
553: int status;
554:
555: status = get_tuner_status(sc);
556:
557: #define STATUSBIT_STEREO 0x10
558: ri->mute = (int)sc->audio_mute_state ? 1 : 0;
559: ri->caps = RADIO_CAPS_DETECT_STEREO | RADIO_CAPS_HW_AFC;
560: ri->info = (status & STATUSBIT_STEREO) ? RADIO_INFO_STEREO : 0;
561:
562: /* not yet supported */
563: ri->volume = ri->rfreq = ri->lock = 0;
564:
565: switch (tv->tuner_mode) {
566: case BT848_TUNER_MODE_TV:
567: ri->tuner_mode = RADIO_TUNER_MODE_TV;
568: ri->freq = tv->frequency * 1000 / 16;
569: break;
570: case BT848_TUNER_MODE_RADIO:
571: ri->tuner_mode = RADIO_TUNER_MODE_RADIO;
572: ri->freq = tv->frequency * 10;
573: break;
574: }
575:
576: /*
577: * The field ri->stereo is used to forcible switch to
578: * mono/stereo, not as an indicator of received signal quality.
579: * The ri->info is for that purpose.
580: */
581: ri->stereo = 1; /* Can't switch to mono, always stereo */
582:
583: ri->chan = tv->channel;
584: ri->chnlset = tv->chnlset;
585:
586: return (0);
587: }
588: #endif /* NRADIO */
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