bktr_os.c revision 146734
1/*-
2 * 1. Redistributions of source code must retain the
3 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by Amancio Hasty and
17 *      Roger Hardiman
18 * 4. The name of the author may not be used to endorse or promote products
19 *    derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 * DISCLAIMED.	IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
29 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include <sys/cdefs.h>
35__FBSDID("$FreeBSD: head/sys/dev/bktr/bktr_os.c 146734 2005-05-29 04:42:30Z nyan $");
36
37/*
38 * This is part of the Driver for Video Capture Cards (Frame grabbers)
39 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
40 * chipset.
41 * Copyright Roger Hardiman and Amancio Hasty.
42 *
43 * bktr_os : This has all the Operating System dependant code,
44 *             probe/attach and open/close/ioctl/read/mmap
45 *             memory allocation
46 *             PCI bus interfacing
47 */
48
49#include "opt_bktr.h"		/* include any kernel config options */
50
51#define FIFO_RISC_DISABLED      0
52#define ALL_INTS_DISABLED       0
53
54
55/*******************/
56/* *** FreeBSD *** */
57/*******************/
58#ifdef __FreeBSD__
59
60#include <sys/param.h>
61#include <sys/systm.h>
62#include <sys/conf.h>
63#include <sys/uio.h>
64#include <sys/kernel.h>
65#include <sys/module.h>
66#include <sys/signalvar.h>
67#include <sys/malloc.h>
68#include <sys/mman.h>
69#include <sys/poll.h>
70#if __FreeBSD_version >= 500014
71#include <sys/selinfo.h>
72#else
73#include <sys/select.h>
74#endif
75
76#include <vm/vm.h>
77#include <vm/vm_kern.h>
78#include <vm/pmap.h>
79#include <vm/vm_extern.h>
80
81#include <sys/bus.h>		/* used by smbus and newbus */
82
83#include <machine/bus.h>	/* used by bus space and newbus */
84#include <sys/bus.h>
85
86#include <sys/rman.h>		/* used by newbus */
87#include <machine/resource.h>	/* used by newbus */
88
89#if (__FreeBSD_version < 500000)
90#include <machine/clock.h>              /* for DELAY */
91#include <pci/pcivar.h>
92#include <pci/pcireg.h>
93#else
94#include <dev/pci/pcivar.h>
95#include <dev/pci/pcireg.h>
96#endif
97
98#include <sys/sysctl.h>
99int bt848_card = -1;
100int bt848_tuner = -1;
101int bt848_reverse_mute = -1;
102int bt848_format = -1;
103int bt848_slow_msp_audio = -1;
104#ifdef BKTR_NEW_MSP34XX_DRIVER
105int bt848_stereo_once = 0;	/* no continuous stereo monitoring */
106int bt848_amsound = 0;		/* hard-wire AM sound at 6.5 Hz (france),
107				   the autoscan seems work well only with FM... */
108int bt848_dolby = 0;
109#endif
110
111SYSCTL_NODE(_hw, OID_AUTO, bt848, CTLFLAG_RW, 0, "Bt848 Driver mgmt");
112SYSCTL_INT(_hw_bt848, OID_AUTO, card, CTLFLAG_RW, &bt848_card, -1, "");
113SYSCTL_INT(_hw_bt848, OID_AUTO, tuner, CTLFLAG_RW, &bt848_tuner, -1, "");
114SYSCTL_INT(_hw_bt848, OID_AUTO, reverse_mute, CTLFLAG_RW, &bt848_reverse_mute, -1, "");
115SYSCTL_INT(_hw_bt848, OID_AUTO, format, CTLFLAG_RW, &bt848_format, -1, "");
116SYSCTL_INT(_hw_bt848, OID_AUTO, slow_msp_audio, CTLFLAG_RW, &bt848_slow_msp_audio, -1, "");
117#ifdef BKTR_NEW_MSP34XX_DRIVER
118SYSCTL_INT(_hw_bt848, OID_AUTO, stereo_once, CTLFLAG_RW, &bt848_stereo_once, 0, "");
119SYSCTL_INT(_hw_bt848, OID_AUTO, amsound, CTLFLAG_RW, &bt848_amsound, 0, "");
120SYSCTL_INT(_hw_bt848, OID_AUTO, dolby, CTLFLAG_RW, &bt848_dolby, 0, "");
121#endif
122
123#endif /* end freebsd section */
124
125
126
127/****************/
128/* *** BSDI *** */
129/****************/
130#ifdef __bsdi__
131#endif /* __bsdi__ */
132
133
134/**************************/
135/* *** OpenBSD/NetBSD *** */
136/**************************/
137#if defined(__NetBSD__) || defined(__OpenBSD__)
138
139#include <sys/param.h>
140#include <sys/systm.h>
141#include <sys/conf.h>
142#include <sys/uio.h>
143#include <sys/kernel.h>
144#include <sys/signalvar.h>
145#include <sys/mman.h>
146#include <sys/poll.h>
147#include <sys/select.h>
148#include <sys/vnode.h>
149
150#include <vm/vm.h>
151
152#ifndef __NetBSD__
153#include <vm/vm_kern.h>
154#include <vm/pmap.h>
155#include <vm/vm_extern.h>
156#endif
157
158#include <sys/device.h>
159#include <dev/pci/pcivar.h>
160#include <dev/pci/pcireg.h>
161#include <dev/pci/pcidevs.h>
162
163#define BKTR_DEBUG
164#ifdef BKTR_DEBUG
165int bktr_debug = 0;
166#define DPR(x)	(bktr_debug ? printf x : 0)
167#else
168#define DPR(x)
169#endif
170#endif /* __NetBSD__ || __OpenBSD__ */
171
172
173#ifdef __NetBSD__
174#include <dev/ic/bt8xx.h>	/* NetBSD location for .h files */
175#include <dev/pci/bktr/bktr_reg.h>
176#include <dev/pci/bktr/bktr_tuner.h>
177#include <dev/pci/bktr/bktr_card.h>
178#include <dev/pci/bktr/bktr_audio.h>
179#include <dev/pci/bktr/bktr_core.h>
180#include <dev/pci/bktr/bktr_os.h>
181#else					/* Traditional location for .h files */
182#include <dev/bktr/ioctl_meteor.h>
183#include <dev/bktr/ioctl_bt848.h>	/* extensions to ioctl_meteor.h */
184#include <dev/bktr/bktr_reg.h>
185#include <dev/bktr/bktr_tuner.h>
186#include <dev/bktr/bktr_card.h>
187#include <dev/bktr/bktr_audio.h>
188#include <dev/bktr/bktr_core.h>
189#include <dev/bktr/bktr_os.h>
190
191#if defined(BKTR_USE_FREEBSD_SMBUS)
192#include <dev/bktr/bktr_i2c.h>
193
194#include "iicbb_if.h"
195#include "smbus_if.h"
196#endif
197#endif
198
199
200/****************************/
201/* *** FreeBSD 4.x code *** */
202/****************************/
203
204static int	bktr_probe( device_t dev );
205static int	bktr_attach( device_t dev );
206static int	bktr_detach( device_t dev );
207static int	bktr_shutdown( device_t dev );
208static void	bktr_intr(void *arg) { common_bktr_intr(arg); }
209
210static device_method_t bktr_methods[] = {
211	/* Device interface */
212	DEVMETHOD(device_probe,         bktr_probe),
213	DEVMETHOD(device_attach,        bktr_attach),
214	DEVMETHOD(device_detach,        bktr_detach),
215	DEVMETHOD(device_shutdown,      bktr_shutdown),
216
217#if defined(BKTR_USE_FREEBSD_SMBUS)
218	/* iicbb interface */
219	DEVMETHOD(iicbb_callback,	bti2c_iic_callback),
220	DEVMETHOD(iicbb_setsda,		bti2c_iic_setsda),
221	DEVMETHOD(iicbb_setscl,		bti2c_iic_setscl),
222	DEVMETHOD(iicbb_getsda,		bti2c_iic_getsda),
223	DEVMETHOD(iicbb_getscl,		bti2c_iic_getscl),
224	DEVMETHOD(iicbb_reset,		bti2c_iic_reset),
225
226	/* smbus interface */
227	DEVMETHOD(smbus_callback,	bti2c_smb_callback),
228	DEVMETHOD(smbus_writeb,		bti2c_smb_writeb),
229	DEVMETHOD(smbus_writew,		bti2c_smb_writew),
230	DEVMETHOD(smbus_readb,		bti2c_smb_readb),
231#endif
232
233	{ 0, 0 }
234};
235
236static driver_t bktr_driver = {
237	"bktr",
238	bktr_methods,
239	sizeof(struct bktr_softc),
240};
241
242static devclass_t bktr_devclass;
243
244static	d_open_t	bktr_open;
245static	d_close_t	bktr_close;
246static	d_read_t	bktr_read;
247static	d_write_t	bktr_write;
248static	d_ioctl_t	bktr_ioctl;
249static	d_mmap_t	bktr_mmap;
250static	d_poll_t	bktr_poll;
251
252static struct cdevsw bktr_cdevsw = {
253	.d_version =	D_VERSION,
254	.d_flags =	D_NEEDGIANT,
255	.d_open =	bktr_open,
256	.d_close =	bktr_close,
257	.d_read =	bktr_read,
258	.d_write =	bktr_write,
259	.d_ioctl =	bktr_ioctl,
260	.d_poll =	bktr_poll,
261	.d_mmap =	bktr_mmap,
262	.d_name =	"bktr",
263};
264
265DRIVER_MODULE(bktr, pci, bktr_driver, bktr_devclass, 0, 0);
266MODULE_DEPEND(bktr, bktr_mem, 1,1,1);
267MODULE_VERSION(bktr, 1);
268
269
270/*
271 * the boot time probe routine.
272 */
273static int
274bktr_probe( device_t dev )
275{
276	unsigned int type = pci_get_devid(dev);
277        unsigned int rev  = pci_get_revid(dev);
278
279	if (PCI_VENDOR(type) == PCI_VENDOR_BROOKTREE)
280	{
281		switch (PCI_PRODUCT(type)) {
282		case PCI_PRODUCT_BROOKTREE_BT848:
283			if (rev == 0x12)
284				device_set_desc(dev, "BrookTree 848A");
285			else
286				device_set_desc(dev, "BrookTree 848");
287			return BUS_PROBE_DEFAULT;
288		case PCI_PRODUCT_BROOKTREE_BT849:
289			device_set_desc(dev, "BrookTree 849A");
290			return BUS_PROBE_DEFAULT;
291		case PCI_PRODUCT_BROOKTREE_BT878:
292			device_set_desc(dev, "BrookTree 878");
293			return BUS_PROBE_DEFAULT;
294		case PCI_PRODUCT_BROOKTREE_BT879:
295			device_set_desc(dev, "BrookTree 879");
296			return BUS_PROBE_DEFAULT;
297		}
298	};
299
300        return ENXIO;
301}
302
303
304/*
305 * the attach routine.
306 */
307static int
308bktr_attach( device_t dev )
309{
310	u_long		latency;
311	u_long		fun;
312	u_long		val;
313	unsigned int	rev;
314	unsigned int	unit;
315	int		error = 0;
316#ifdef BROOKTREE_IRQ
317	u_long		old_irq, new_irq;
318#endif
319
320        struct bktr_softc *bktr = device_get_softc(dev);
321
322	unit = device_get_unit(dev);
323
324	/* build the device name for bktr_name() */
325	snprintf(bktr->bktr_xname, sizeof(bktr->bktr_xname), "bktr%d",unit);
326
327	/*
328	 * Enable bus mastering and Memory Mapped device
329	 */
330	val = pci_read_config(dev, PCIR_COMMAND, 4);
331	val |= (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
332	pci_write_config(dev, PCIR_COMMAND, val, 4);
333
334	/*
335	 * Map control/status registers.
336	 */
337	bktr->mem_rid = PCIR_BAR(0);
338	bktr->res_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
339					&bktr->mem_rid, RF_ACTIVE);
340
341	if (!bktr->res_mem) {
342		device_printf(dev, "could not map memory\n");
343		error = ENXIO;
344		goto fail;
345	}
346	bktr->memt = rman_get_bustag(bktr->res_mem);
347	bktr->memh = rman_get_bushandle(bktr->res_mem);
348
349
350	/*
351	 * Disable the brooktree device
352	 */
353	OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
354	OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
355
356
357#ifdef BROOKTREE_IRQ		/* from the configuration file */
358	old_irq = pci_conf_read(tag, PCI_INTERRUPT_REG);
359	pci_conf_write(tag, PCI_INTERRUPT_REG, BROOKTREE_IRQ);
360	new_irq = pci_conf_read(tag, PCI_INTERRUPT_REG);
361	printf("bktr%d: attach: irq changed from %d to %d\n",
362		unit, (old_irq & 0xff), (new_irq & 0xff));
363#endif
364
365	/*
366	 * Allocate our interrupt.
367	 */
368	bktr->irq_rid = 0;
369	bktr->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
370				&bktr->irq_rid, RF_SHAREABLE | RF_ACTIVE);
371	if (bktr->res_irq == NULL) {
372		device_printf(dev, "could not map interrupt\n");
373		error = ENXIO;
374		goto fail;
375	}
376
377	error = bus_setup_intr(dev, bktr->res_irq, INTR_TYPE_TTY,
378                               bktr_intr, bktr, &bktr->res_ih);
379	if (error) {
380		device_printf(dev, "could not setup irq\n");
381		goto fail;
382
383	}
384
385
386	/* Update the Device Control Register */
387	/* on Bt878 and Bt879 cards           */
388	fun = pci_read_config( dev, 0x40, 2);
389        fun = fun | 1;	/* Enable writes to the sub-system vendor ID */
390
391#if defined( BKTR_430_FX_MODE )
392	if (bootverbose) printf("Using 430 FX chipset compatibilty mode\n");
393        fun = fun | 2;	/* Enable Intel 430 FX compatibility mode */
394#endif
395
396#if defined( BKTR_SIS_VIA_MODE )
397	if (bootverbose) printf("Using SiS/VIA chipset compatibilty mode\n");
398        fun = fun | 4;	/* Enable SiS/VIA compatibility mode (usefull for
399                           OPTi chipset motherboards too */
400#endif
401	pci_write_config(dev, 0x40, fun, 2);
402
403#if defined(BKTR_USE_FREEBSD_SMBUS)
404	if (bt848_i2c_attach(dev))
405		printf("bktr%d: i2c_attach: can't attach\n", unit);
406#endif
407
408/*
409 * PCI latency timer.  32 is a good value for 4 bus mastering slots, if
410 * you have more than four, then 16 would probably be a better value.
411 */
412#ifndef BROOKTREE_DEF_LATENCY_VALUE
413#define BROOKTREE_DEF_LATENCY_VALUE	10
414#endif
415	latency = pci_read_config(dev, PCI_LATENCY_TIMER, 4);
416	latency = (latency >> 8) & 0xff;
417	if ( bootverbose ) {
418		if (latency)
419			printf("brooktree%d: PCI bus latency is", unit);
420		else
421			printf("brooktree%d: PCI bus latency was 0 changing to",
422				unit);
423	}
424	if ( !latency ) {
425		latency = BROOKTREE_DEF_LATENCY_VALUE;
426		pci_write_config(dev, PCI_LATENCY_TIMER, latency<<8, 4);
427	}
428	if ( bootverbose ) {
429		printf(" %d.\n", (int) latency);
430	}
431
432	/* read the pci device id and revision id */
433	fun = pci_get_devid(dev);
434        rev = pci_get_revid(dev);
435
436	/* call the common attach code */
437	common_bktr_attach( bktr, unit, fun, rev );
438
439	/* make the device entries */
440	bktr->bktrdev = make_dev(&bktr_cdevsw, unit,
441				0, 0, 0444, "bktr%d",  unit);
442	bktr->tunerdev= make_dev(&bktr_cdevsw, unit+16,
443				0, 0, 0444, "tuner%d", unit);
444	bktr->vbidev  = make_dev(&bktr_cdevsw, unit+32,
445				0, 0, 0444, "vbi%d"  , unit);
446
447
448	/* if this is unit 0 (/dev/bktr0, /dev/tuner0, /dev/vbi0) then make */
449	/* alias entries to /dev/bktr /dev/tuner and /dev/vbi */
450#if (__FreeBSD_version >=500000)
451	if (unit == 0) {
452		bktr->bktrdev_alias = make_dev_alias(bktr->bktrdev,  "bktr");
453		bktr->tunerdev_alias= make_dev_alias(bktr->tunerdev, "tuner");
454		bktr->vbidev_alias  = make_dev_alias(bktr->vbidev,   "vbi");
455	}
456#endif
457
458	return 0;
459
460fail:
461	if (bktr->res_irq)
462		bus_release_resource(dev, SYS_RES_IRQ, bktr->irq_rid, bktr->res_irq);
463	if (bktr->res_mem)
464		bus_release_resource(dev, SYS_RES_IRQ, bktr->mem_rid, bktr->res_mem);
465	return error;
466
467}
468
469/*
470 * the detach routine.
471 */
472static int
473bktr_detach( device_t dev )
474{
475	struct bktr_softc *bktr = device_get_softc(dev);
476
477#ifdef BKTR_NEW_MSP34XX_DRIVER
478	/* Disable the soundchip and kernel thread */
479	if (bktr->msp3400c_info != NULL)
480		msp_detach(bktr);
481#endif
482
483	/* Disable the brooktree device */
484	OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
485	OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
486
487#if defined(BKTR_USE_FREEBSD_SMBUS)
488	if (bt848_i2c_detach(dev))
489		printf("bktr%d: i2c_attach: can't attach\n",
490		     device_get_unit(dev));
491#endif
492#ifdef USE_VBIMUTEX
493        mtx_destroy(&bktr->vbimutex);
494#endif
495
496	/* Note: We do not free memory for RISC programs, grab buffer, vbi buffers */
497	/* The memory is retained by the bktr_mem module so we can unload and */
498	/* then reload the main bktr driver module */
499
500	/* Unregister the /dev/bktrN, tunerN and vbiN devices,
501	 * the aliases for unit 0 are automatically destroyed */
502	destroy_dev(bktr->vbidev);
503	destroy_dev(bktr->tunerdev);
504	destroy_dev(bktr->bktrdev);
505
506	/*
507	 * Deallocate resources.
508	 */
509	bus_teardown_intr(dev, bktr->res_irq, bktr->res_ih);
510	bus_release_resource(dev, SYS_RES_IRQ, bktr->irq_rid, bktr->res_irq);
511	bus_release_resource(dev, SYS_RES_MEMORY, bktr->mem_rid, bktr->res_mem);
512
513	return 0;
514}
515
516/*
517 * the shutdown routine.
518 */
519static int
520bktr_shutdown( device_t dev )
521{
522	struct bktr_softc *bktr = device_get_softc(dev);
523
524	/* Disable the brooktree device */
525	OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
526	OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
527
528	return 0;
529}
530
531
532/*
533 * Special Memory Allocation
534 */
535vm_offset_t
536get_bktr_mem( int unit, unsigned size )
537{
538	vm_offset_t	addr = 0;
539
540	addr = (vm_offset_t)contigmalloc(size, M_DEVBUF, M_NOWAIT, 0,
541	    0xffffffff, 1<<24, 0);
542	if (addr == 0)
543		addr = (vm_offset_t)contigmalloc(size, M_DEVBUF, M_NOWAIT, 0,
544		    0xffffffff, PAGE_SIZE, 0);
545	if (addr == 0) {
546		printf("bktr%d: Unable to allocate %d bytes of memory.\n",
547			unit, size);
548	}
549
550	return( addr );
551}
552
553
554/*---------------------------------------------------------
555**
556**	BrookTree 848 character device driver routines
557**
558**---------------------------------------------------------
559*/
560
561#define VIDEO_DEV	0x00
562#define TUNER_DEV	0x01
563#define VBI_DEV		0x02
564
565#define UNIT(x)		((x) & 0x0f)
566#define FUNCTION(x)	(x >> 4)
567
568/*
569 *
570 */
571static int
572bktr_open( struct cdev *dev, int flags, int fmt, struct thread *td )
573{
574	bktr_ptr_t	bktr;
575	int		unit;
576	int		result;
577
578	unit = UNIT( minor(dev) );
579
580	/* Get the device data */
581	bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
582	if (bktr == NULL) {
583		/* the device is no longer valid/functioning */
584		return (ENXIO);
585	}
586
587	if (!(bktr->flags & METEOR_INITALIZED)) /* device not found */
588		return( ENXIO );
589
590	/* Record that the device is now busy */
591	device_busy(devclass_get_device(bktr_devclass, unit));
592
593
594	if (bt848_card != -1) {
595	  if ((bt848_card >> 8   == unit ) &&
596	     ( (bt848_card & 0xff) < Bt848_MAX_CARD )) {
597	    if ( bktr->bt848_card != (bt848_card & 0xff) ) {
598	      bktr->bt848_card = (bt848_card & 0xff);
599	      probeCard(bktr, FALSE, unit);
600	    }
601	  }
602	}
603
604	if (bt848_tuner != -1) {
605	  if ((bt848_tuner >> 8   == unit ) &&
606	     ( (bt848_tuner & 0xff) < Bt848_MAX_TUNER )) {
607	    if ( bktr->bt848_tuner != (bt848_tuner & 0xff) ) {
608	      bktr->bt848_tuner = (bt848_tuner & 0xff);
609	      probeCard(bktr, FALSE, unit);
610	    }
611	  }
612	}
613
614	if (bt848_reverse_mute != -1) {
615	  if ((bt848_reverse_mute >> 8)   == unit ) {
616	    bktr->reverse_mute = bt848_reverse_mute & 0xff;
617	  }
618	}
619
620	if (bt848_slow_msp_audio != -1) {
621	  if ((bt848_slow_msp_audio >> 8) == unit ) {
622	      bktr->slow_msp_audio = (bt848_slow_msp_audio & 0xff);
623	  }
624	}
625
626#ifdef BKTR_NEW_MSP34XX_DRIVER
627	if (bt848_stereo_once != 0) {
628	  if ((bt848_stereo_once >> 8) == unit ) {
629	      bktr->stereo_once = (bt848_stereo_once & 0xff);
630	  }
631	}
632
633	if (bt848_amsound != -1) {
634	  if ((bt848_amsound >> 8) == unit ) {
635	      bktr->amsound = (bt848_amsound & 0xff);
636	  }
637	}
638
639	if (bt848_dolby != -1) {
640	  if ((bt848_dolby >> 8) == unit ) {
641	      bktr->dolby = (bt848_dolby & 0xff);
642	  }
643	}
644#endif
645
646	switch ( FUNCTION( minor(dev) ) ) {
647	case VIDEO_DEV:
648		result = video_open( bktr );
649		break;
650	case TUNER_DEV:
651		result = tuner_open( bktr );
652		break;
653	case VBI_DEV:
654		result = vbi_open( bktr );
655		break;
656	default:
657		result = ENXIO;
658		break;
659	}
660
661	/* If there was an error opening the device, undo the busy status */
662	if (result != 0)
663		device_unbusy(devclass_get_device(bktr_devclass, unit));
664	return( result );
665}
666
667
668/*
669 *
670 */
671static int
672bktr_close( struct cdev *dev, int flags, int fmt, struct thread *td )
673{
674	bktr_ptr_t	bktr;
675	int		unit;
676	int		result;
677
678	unit = UNIT( minor(dev) );
679
680	/* Get the device data */
681	bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
682	if (bktr == NULL) {
683		/* the device is no longer valid/functioning */
684		return (ENXIO);
685	}
686
687	switch ( FUNCTION( minor(dev) ) ) {
688	case VIDEO_DEV:
689		result = video_close( bktr );
690		break;
691	case TUNER_DEV:
692		result = tuner_close( bktr );
693		break;
694	case VBI_DEV:
695		result = vbi_close( bktr );
696		break;
697	default:
698		return (ENXIO);
699		break;
700	}
701
702	device_unbusy(devclass_get_device(bktr_devclass, unit));
703	return( result );
704}
705
706
707/*
708 *
709 */
710static int
711bktr_read( struct cdev *dev, struct uio *uio, int ioflag )
712{
713	bktr_ptr_t	bktr;
714	int		unit;
715
716	unit = UNIT(minor(dev));
717
718	/* Get the device data */
719	bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
720	if (bktr == NULL) {
721		/* the device is no longer valid/functioning */
722		return (ENXIO);
723	}
724
725	switch ( FUNCTION( minor(dev) ) ) {
726	case VIDEO_DEV:
727		return( video_read( bktr, unit, dev, uio ) );
728	case VBI_DEV:
729		return( vbi_read( bktr, uio, ioflag ) );
730	}
731        return( ENXIO );
732}
733
734
735/*
736 *
737 */
738static int
739bktr_write( struct cdev *dev, struct uio *uio, int ioflag )
740{
741	return( EINVAL ); /* XXX or ENXIO ? */
742}
743
744
745/*
746 *
747 */
748static int
749bktr_ioctl( struct cdev *dev, ioctl_cmd_t cmd, caddr_t arg, int flag, struct thread *td )
750{
751	bktr_ptr_t	bktr;
752	int		unit;
753
754	unit = UNIT(minor(dev));
755
756	/* Get the device data */
757	bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
758	if (bktr == NULL) {
759		/* the device is no longer valid/functioning */
760		return (ENXIO);
761	}
762
763	if (bktr->bigbuf == 0)	/* no frame buffer allocated (ioctl failed) */
764		return( ENOMEM );
765
766	switch ( FUNCTION( minor(dev) ) ) {
767	case VIDEO_DEV:
768		return( video_ioctl( bktr, unit, cmd, arg, td ) );
769	case TUNER_DEV:
770		return( tuner_ioctl( bktr, unit, cmd, arg, td ) );
771	}
772
773	return( ENXIO );
774}
775
776
777/*
778 *
779 */
780static int
781bktr_mmap( struct cdev *dev, vm_offset_t offset, vm_paddr_t *paddr, int nprot )
782{
783	int		unit;
784	bktr_ptr_t	bktr;
785
786	unit = UNIT(minor(dev));
787
788	if (FUNCTION(minor(dev)) > 0)	/* only allow mmap on /dev/bktr[n] */
789		return( -1 );
790
791	/* Get the device data */
792	bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
793	if (bktr == NULL) {
794		/* the device is no longer valid/functioning */
795		return (ENXIO);
796	}
797
798	if (nprot & PROT_EXEC)
799		return( -1 );
800
801	if (offset < 0)
802		return( -1 );
803
804	if (offset >= bktr->alloc_pages * PAGE_SIZE)
805		return( -1 );
806
807	*paddr = vtophys(bktr->bigbuf) + offset;
808	return( 0 );
809}
810
811static int
812bktr_poll( struct cdev *dev, int events, struct thread *td)
813{
814	int		unit;
815	bktr_ptr_t	bktr;
816	int revents = 0;
817	DECLARE_INTR_MASK(s);
818
819	unit = UNIT(minor(dev));
820
821	/* Get the device data */
822	bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
823	if (bktr == NULL) {
824		/* the device is no longer valid/functioning */
825		return (ENXIO);
826	}
827
828	LOCK_VBI(bktr);
829	DISABLE_INTR(s);
830
831	if (events & (POLLIN | POLLRDNORM)) {
832
833		switch ( FUNCTION( minor(dev) ) ) {
834		case VBI_DEV:
835			if(bktr->vbisize == 0)
836				selrecord(td, &bktr->vbi_select);
837			else
838				revents |= events & (POLLIN | POLLRDNORM);
839			break;
840		}
841	}
842
843	ENABLE_INTR(s);
844	UNLOCK_VBI(bktr);
845
846	return (revents);
847}
848
849/*****************/
850/* *** BSDI  *** */
851/*****************/
852
853#if defined(__bsdi__)
854#endif		/* __bsdi__ BSDI specific kernel interface routines */
855
856
857/*****************************/
858/* *** OpenBSD / NetBSD  *** */
859/*****************************/
860#if defined(__NetBSD__) || defined(__OpenBSD__)
861
862#define IPL_VIDEO       IPL_BIO         /* XXX */
863
864static	int		bktr_intr(void *arg) { return common_bktr_intr(arg); }
865
866#define bktr_open       bktropen
867#define bktr_close      bktrclose
868#define bktr_read       bktrread
869#define bktr_write      bktrwrite
870#define bktr_ioctl      bktrioctl
871#define bktr_mmap       bktrmmap
872
873vm_offset_t vm_page_alloc_contig(vm_offset_t, vm_offset_t,
874                                 vm_offset_t, vm_offset_t);
875
876#if defined(__OpenBSD__)
877static int      bktr_probe(struct device *, void *, void *);
878#else
879static int      bktr_probe(struct device *, struct cfdata *, void *);
880#endif
881static void     bktr_attach(struct device *, struct device *, void *);
882
883struct cfattach bktr_ca = {
884        sizeof(struct bktr_softc), bktr_probe, bktr_attach
885};
886
887#if defined(__NetBSD__)
888extern struct cfdriver bktr_cd;
889#else
890struct cfdriver bktr_cd = {
891        NULL, "bktr", DV_DULL
892};
893#endif
894
895int
896bktr_probe(parent, match, aux)
897	struct device *parent;
898#if defined(__OpenBSD__)
899        void *match;
900#else
901        struct cfdata *match;
902#endif
903        void *aux;
904{
905        struct pci_attach_args *pa = aux;
906
907        if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_BROOKTREE &&
908            (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT848 ||
909             PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT849 ||
910             PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT878 ||
911             PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT879))
912                return 1;
913
914        return 0;
915}
916
917
918/*
919 * the attach routine.
920 */
921static void
922bktr_attach(struct device *parent, struct device *self, void *aux)
923{
924	bktr_ptr_t	bktr;
925	u_long		latency;
926	u_long		fun;
927	unsigned int	rev;
928
929#if defined(__OpenBSD__)
930	struct pci_attach_args *pa = aux;
931	pci_chipset_tag_t pc = pa->pa_pc;
932
933	pci_intr_handle_t ih;
934	const char *intrstr;
935	int retval;
936	int unit;
937
938	bktr = (bktr_ptr_t)self;
939	unit = bktr->bktr_dev.dv_unit;
940
941	bktr->pc = pa->pa_pc;
942	bktr->tag = pa->pa_tag;
943        bktr->dmat = pa->pa_dmat;
944
945	/*
946	 * map memory
947	 */
948	bktr->memt = pa->pa_memt;
949	retval = pci_mem_find(pc, pa->pa_tag, PCI_MAPREG_START,
950			      &bktr->phys_base, &bktr->obmemsz, NULL);
951	if (!retval)
952		retval = bus_space_map(pa->pa_memt, bktr->phys_base,
953				       bktr->obmemsz, 0, &bktr->memh);
954	if (retval) {
955		printf(": couldn't map memory\n");
956		return;
957	}
958
959
960	/*
961	 * map interrupt
962	 */
963	if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
964			 pa->pa_intrline, &ih)) {
965		printf(": couldn't map interrupt\n");
966		return;
967	}
968	intrstr = pci_intr_string(pa->pa_pc, ih);
969
970	bktr->ih = pci_intr_establish(pa->pa_pc, ih, IPL_VIDEO,
971				      bktr_intr, bktr, bktr->bktr_dev.dv_xname);
972	if (bktr->ih == NULL) {
973		printf(": couldn't establish interrupt");
974		if (intrstr != NULL)
975			printf(" at %s", intrstr);
976		printf("\n");
977		return;
978	}
979
980	if (intrstr != NULL)
981		printf(": %s\n", intrstr);
982#endif /* __OpenBSD__ */
983
984#if defined(__NetBSD__)
985	struct pci_attach_args *pa = aux;
986	pci_intr_handle_t ih;
987	const char *intrstr;
988	int retval;
989	int unit;
990
991	bktr = (bktr_ptr_t)self;
992	unit = bktr->bktr_dev.dv_unit;
993        bktr->dmat = pa->pa_dmat;
994
995	printf("\n");
996
997	/*
998	 * map memory
999	 */
1000	retval = pci_mapreg_map(pa, PCI_MAPREG_START,
1001				PCI_MAPREG_TYPE_MEM
1002				| PCI_MAPREG_MEM_TYPE_32BIT, 0,
1003				&bktr->memt, &bktr->memh, NULL,
1004				&bktr->obmemsz);
1005	DPR(("pci_mapreg_map: memt %x, memh %x, size %x\n",
1006	     bktr->memt, (u_int)bktr->memh, (u_int)bktr->obmemsz));
1007	if (retval) {
1008		printf("%s: couldn't map memory\n", bktr_name(bktr));
1009		return;
1010	}
1011
1012	/*
1013	 * Disable the brooktree device
1014	 */
1015	OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
1016	OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
1017
1018	/*
1019	 * map interrupt
1020	 */
1021	if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
1022			 pa->pa_intrline, &ih)) {
1023		printf("%s: couldn't map interrupt\n",
1024		       bktr_name(bktr));
1025		return;
1026	}
1027	intrstr = pci_intr_string(pa->pa_pc, ih);
1028	bktr->ih = pci_intr_establish(pa->pa_pc, ih, IPL_VIDEO,
1029				      bktr_intr, bktr);
1030	if (bktr->ih == NULL) {
1031		printf("%s: couldn't establish interrupt",
1032		       bktr_name(bktr));
1033		if (intrstr != NULL)
1034			printf(" at %s", intrstr);
1035		printf("\n");
1036		return;
1037	}
1038	if (intrstr != NULL)
1039		printf("%s: interrupting at %s\n", bktr_name(bktr),
1040		       intrstr);
1041#endif /* __NetBSD__ */
1042
1043/*
1044 * PCI latency timer.  32 is a good value for 4 bus mastering slots, if
1045 * you have more than four, then 16 would probably be a better value.
1046 */
1047#ifndef BROOKTREE_DEF_LATENCY_VALUE
1048#define BROOKTREE_DEF_LATENCY_VALUE	10
1049#endif
1050	latency = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_LATENCY_TIMER);
1051	latency = (latency >> 8) & 0xff;
1052
1053	if (!latency) {
1054		if (bootverbose) {
1055			printf("%s: PCI bus latency was 0 changing to %d",
1056			       bktr_name(bktr), BROOKTREE_DEF_LATENCY_VALUE);
1057		}
1058		latency = BROOKTREE_DEF_LATENCY_VALUE;
1059		pci_conf_write(pa->pa_pc, pa->pa_tag,
1060			       PCI_LATENCY_TIMER, latency<<8);
1061	}
1062
1063
1064	/* Enabled Bus Master
1065	   XXX: check if all old DMA is stopped first (e.g. after warm
1066	   boot) */
1067	fun = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
1068	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
1069		       fun | PCI_COMMAND_MASTER_ENABLE);
1070
1071	/* read the pci id and determine the card type */
1072	fun = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ID_REG);
1073        rev = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG) & 0x000000ff;
1074
1075	common_bktr_attach(bktr, unit, fun, rev);
1076}
1077
1078
1079/*
1080 * Special Memory Allocation
1081 */
1082vm_offset_t
1083get_bktr_mem(bktr, dmapp, size)
1084        bktr_ptr_t bktr;
1085        bus_dmamap_t *dmapp;
1086        unsigned int size;
1087{
1088        bus_dma_tag_t dmat = bktr->dmat;
1089        bus_dma_segment_t seg;
1090        bus_size_t align;
1091        int rseg;
1092        caddr_t kva;
1093
1094        /*
1095         * Allocate a DMA area
1096         */
1097        align = 1 << 24;
1098        if (bus_dmamem_alloc(dmat, size, align, 0, &seg, 1,
1099                             &rseg, BUS_DMA_NOWAIT)) {
1100                align = PAGE_SIZE;
1101                if (bus_dmamem_alloc(dmat, size, align, 0, &seg, 1,
1102                                     &rseg, BUS_DMA_NOWAIT)) {
1103                        printf("%s: Unable to dmamem_alloc of %d bytes\n",
1104			       bktr_name(bktr), size);
1105                        return 0;
1106                }
1107        }
1108        if (bus_dmamem_map(dmat, &seg, rseg, size,
1109                           &kva, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
1110                printf("%s: Unable to dmamem_map of %d bytes\n",
1111                        bktr_name(bktr), size);
1112                bus_dmamem_free(dmat, &seg, rseg);
1113                return 0;
1114        }
1115#ifdef __OpenBSD__
1116        bktr->dm_mapsize = size;
1117#endif
1118        /*
1119         * Create and locd the DMA map for the DMA area
1120         */
1121        if (bus_dmamap_create(dmat, size, 1, size, 0, BUS_DMA_NOWAIT, dmapp)) {
1122                printf("%s: Unable to dmamap_create of %d bytes\n",
1123                        bktr_name(bktr), size);
1124                bus_dmamem_unmap(dmat, kva, size);
1125                bus_dmamem_free(dmat, &seg, rseg);
1126                return 0;
1127        }
1128        if (bus_dmamap_load(dmat, *dmapp, kva, size, NULL, BUS_DMA_NOWAIT)) {
1129                printf("%s: Unable to dmamap_load of %d bytes\n",
1130                        bktr_name(bktr), size);
1131                bus_dmamem_unmap(dmat, kva, size);
1132                bus_dmamem_free(dmat, &seg, rseg);
1133                bus_dmamap_destroy(dmat, *dmapp);
1134                return 0;
1135        }
1136        return (vm_offset_t)kva;
1137}
1138
1139void
1140free_bktr_mem(bktr, dmap, kva)
1141        bktr_ptr_t bktr;
1142        bus_dmamap_t dmap;
1143        vm_offset_t kva;
1144{
1145        bus_dma_tag_t dmat = bktr->dmat;
1146
1147#ifdef __NetBSD__
1148        bus_dmamem_unmap(dmat, (caddr_t)kva, dmap->dm_mapsize);
1149#else
1150        bus_dmamem_unmap(dmat, (caddr_t)kva, bktr->dm_mapsize);
1151#endif
1152        bus_dmamem_free(dmat, dmap->dm_segs, 1);
1153        bus_dmamap_destroy(dmat, dmap);
1154}
1155
1156
1157/*---------------------------------------------------------
1158**
1159**	BrookTree 848 character device driver routines
1160**
1161**---------------------------------------------------------
1162*/
1163
1164
1165#define VIDEO_DEV	0x00
1166#define TUNER_DEV	0x01
1167#define VBI_DEV		0x02
1168
1169#define UNIT(x)         (minor((x) & 0x0f))
1170#define FUNCTION(x)     (minor((x >> 4) & 0x0f))
1171
1172/*
1173 *
1174 */
1175int
1176bktr_open(dev_t dev, int flags, int fmt, struct thread *td)
1177{
1178	bktr_ptr_t	bktr;
1179	int		unit;
1180
1181	unit = UNIT(dev);
1182
1183	/* unit out of range */
1184	if ((unit > bktr_cd.cd_ndevs) || (bktr_cd.cd_devs[unit] == NULL))
1185		return(ENXIO);
1186
1187	bktr = bktr_cd.cd_devs[unit];
1188
1189	if (!(bktr->flags & METEOR_INITALIZED)) /* device not found */
1190		return(ENXIO);
1191
1192	switch (FUNCTION(dev)) {
1193	case VIDEO_DEV:
1194		return(video_open(bktr));
1195	case TUNER_DEV:
1196		return(tuner_open(bktr));
1197	case VBI_DEV:
1198		return(vbi_open(bktr));
1199	}
1200
1201	return(ENXIO);
1202}
1203
1204
1205/*
1206 *
1207 */
1208int
1209bktr_close(dev_t dev, int flags, int fmt, struct thread *td)
1210{
1211	bktr_ptr_t	bktr;
1212	int		unit;
1213
1214	unit = UNIT(dev);
1215
1216	bktr = bktr_cd.cd_devs[unit];
1217
1218	switch (FUNCTION(dev)) {
1219	case VIDEO_DEV:
1220		return(video_close(bktr));
1221	case TUNER_DEV:
1222		return(tuner_close(bktr));
1223	case VBI_DEV:
1224		return(vbi_close(bktr));
1225	}
1226
1227	return(ENXIO);
1228}
1229
1230/*
1231 *
1232 */
1233int
1234bktr_read(dev_t dev, struct uio *uio, int ioflag)
1235{
1236	bktr_ptr_t	bktr;
1237	int		unit;
1238
1239	unit = UNIT(dev);
1240
1241	bktr = bktr_cd.cd_devs[unit];
1242
1243	switch (FUNCTION(dev)) {
1244	case VIDEO_DEV:
1245		return(video_read(bktr, unit, dev, uio));
1246	case VBI_DEV:
1247		return(vbi_read(bktr, uio, ioflag));
1248	}
1249
1250        return(ENXIO);
1251}
1252
1253
1254/*
1255 *
1256 */
1257int
1258bktr_write(dev_t dev, struct uio *uio, int ioflag)
1259{
1260	/* operation not supported */
1261	return(EOPNOTSUPP);
1262}
1263
1264/*
1265 *
1266 */
1267int
1268bktr_ioctl(dev_t dev, ioctl_cmd_t cmd, caddr_t arg, int flag, struct thread *td)
1269{
1270	bktr_ptr_t	bktr;
1271	int		unit;
1272
1273	unit = UNIT(dev);
1274
1275	bktr = bktr_cd.cd_devs[unit];
1276
1277	if (bktr->bigbuf == 0)	/* no frame buffer allocated (ioctl failed) */
1278		return(ENOMEM);
1279
1280	switch (FUNCTION(dev)) {
1281	case VIDEO_DEV:
1282		return(video_ioctl(bktr, unit, cmd, arg, pr));
1283	case TUNER_DEV:
1284		return(tuner_ioctl(bktr, unit, cmd, arg, pr));
1285	}
1286
1287	return(ENXIO);
1288}
1289
1290/*
1291 *
1292 */
1293paddr_t
1294bktr_mmap(dev_t dev, off_t offset, int nprot)
1295{
1296	int		unit;
1297	bktr_ptr_t	bktr;
1298
1299	unit = UNIT(dev);
1300
1301	if (FUNCTION(dev) > 0)	/* only allow mmap on /dev/bktr[n] */
1302		return(-1);
1303
1304	bktr = bktr_cd.cd_devs[unit];
1305
1306	if ((vaddr_t)offset < 0)
1307		return(-1);
1308
1309	if ((vaddr_t)offset >= bktr->alloc_pages * PAGE_SIZE)
1310		return(-1);
1311
1312#ifdef __NetBSD__
1313	return (bus_dmamem_mmap(bktr->dmat, bktr->dm_mem->dm_segs, 1,
1314				(vaddr_t)offset, nprot, BUS_DMA_WAITOK));
1315#else
1316	return(i386_btop(vtophys(bktr->bigbuf) + offset));
1317#endif
1318}
1319
1320#endif /* __NetBSD__ || __OpenBSD__ */
1321