1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * 1. Redistributions of source code must retain the
5 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Amancio Hasty and
19 * Roger Hardiman
20 * 4. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
25 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
32 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 */
35
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
38
39 /*
40 * This is part of the Driver for Video Capture Cards (Frame grabbers)
41 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
42 * chipset.
43 * Copyright Roger Hardiman and Amancio Hasty.
44 *
45 * bktr_os : This has all the Operating System dependent code,
46 * probe/attach and open/close/ioctl/read/mmap
47 * memory allocation
48 * PCI bus interfacing
49 */
50
51 #include "opt_bktr.h" /* include any kernel config options */
52
53 #define FIFO_RISC_DISABLED 0
54 #define ALL_INTS_DISABLED 0
55
56
57 /*******************/
58 /* *** FreeBSD *** */
59 /*******************/
60 #ifdef __FreeBSD__
61
62 #include <sys/param.h>
63 #include <sys/systm.h>
64 #include <sys/conf.h>
65 #include <sys/uio.h>
66 #include <sys/kernel.h>
67 #include <sys/module.h>
68 #include <sys/signalvar.h>
69 #include <sys/malloc.h>
70 #include <sys/mman.h>
71 #include <sys/poll.h>
72 #if __FreeBSD_version >= 500014
73 #include <sys/selinfo.h>
74 #else
75 #include <sys/select.h>
76 #endif
77
78 #include <vm/vm.h>
79 #include <vm/vm_kern.h>
80 #include <vm/pmap.h>
81 #include <vm/vm_extern.h>
82
83 #include <sys/bus.h> /* used by smbus and newbus */
84
85 #include <machine/bus.h> /* used by bus space and newbus */
86 #include <sys/bus.h>
87
88 #include <sys/rman.h> /* used by newbus */
89 #include <machine/resource.h> /* used by newbus */
90
91 #if (__FreeBSD_version < 500000)
92 #include <machine/clock.h> /* for DELAY */
93 #include <pci/pcivar.h>
94 #include <pci/pcireg.h>
95 #else
96 #include <dev/pci/pcivar.h>
97 #include <dev/pci/pcireg.h>
98 #endif
99
100 #include <sys/sysctl.h>
101 int bt848_card = -1;
102 int bt848_tuner = -1;
103 int bt848_reverse_mute = -1;
104 int bt848_format = -1;
105 int bt848_slow_msp_audio = -1;
106 #ifdef BKTR_NEW_MSP34XX_DRIVER
107 int bt848_stereo_once = 0; /* no continuous stereo monitoring */
108 int bt848_amsound = 0; /* hard-wire AM sound at 6.5 Hz (france),
109 the autoscan seems work well only with FM... */
110 int bt848_dolby = 0;
111 #endif
112
113 static SYSCTL_NODE(_hw, OID_AUTO, bt848, CTLFLAG_RW, 0, "Bt848 Driver mgmt");
114 SYSCTL_INT(_hw_bt848, OID_AUTO, card, CTLFLAG_RW, &bt848_card, -1, "");
115 SYSCTL_INT(_hw_bt848, OID_AUTO, tuner, CTLFLAG_RW, &bt848_tuner, -1, "");
116 SYSCTL_INT(_hw_bt848, OID_AUTO, reverse_mute, CTLFLAG_RW, &bt848_reverse_mute, -1, "");
117 SYSCTL_INT(_hw_bt848, OID_AUTO, format, CTLFLAG_RW, &bt848_format, -1, "");
118 SYSCTL_INT(_hw_bt848, OID_AUTO, slow_msp_audio, CTLFLAG_RW, &bt848_slow_msp_audio, -1, "");
119 #ifdef BKTR_NEW_MSP34XX_DRIVER
120 SYSCTL_INT(_hw_bt848, OID_AUTO, stereo_once, CTLFLAG_RW, &bt848_stereo_once, 0, "");
121 SYSCTL_INT(_hw_bt848, OID_AUTO, amsound, CTLFLAG_RW, &bt848_amsound, 0, "");
122 SYSCTL_INT(_hw_bt848, OID_AUTO, dolby, CTLFLAG_RW, &bt848_dolby, 0, "");
123 #endif
124
125 #endif /* end freebsd section */
126
127
128
129 /****************/
130 /* *** BSDI *** */
131 /****************/
132 #ifdef __bsdi__
133 #endif /* __bsdi__ */
134
135
136 /**************************/
137 /* *** OpenBSD/NetBSD *** */
138 /**************************/
139 #if defined(__NetBSD__) || defined(__OpenBSD__)
140
141 #include <sys/param.h>
142 #include <sys/systm.h>
143 #include <sys/conf.h>
144 #include <sys/uio.h>
145 #include <sys/kernel.h>
146 #include <sys/signalvar.h>
147 #include <sys/mman.h>
148 #include <sys/poll.h>
149 #include <sys/select.h>
150 #include <sys/vnode.h>
151
152 #include <vm/vm.h>
153
154 #include <dev/bktr/ioctl_bt848.h> /* extensions to ioctl_meteor.h */
155
156 #ifndef __NetBSD__
157 #include <vm/vm_kern.h>
158 #include <vm/pmap.h>
159 #include <vm/vm_extern.h>
160 #endif
161
162 #include <sys/device.h>
163 #include <dev/pci/pcivar.h>
164 #include <dev/pci/pcireg.h>
165 #include <dev/pci/pcidevs.h>
166
167 #define BKTR_DEBUG
168 #ifdef BKTR_DEBUG
169 int bktr_debug = 0;
170 #define DPR(x) (bktr_debug ? printf x : 0)
171 #else
172 #define DPR(x)
173 #endif
174 #endif /* __NetBSD__ || __OpenBSD__ */
175
176
177 #ifdef __NetBSD__
178 #include <dev/ic/bt8xx.h> /* NetBSD location for .h files */
179 #include <dev/pci/bktr/bktr_reg.h>
180 #include <dev/pci/bktr/bktr_tuner.h>
181 #include <dev/pci/bktr/bktr_card.h>
182 #include <dev/pci/bktr/bktr_audio.h>
183 #include <dev/pci/bktr/bktr_core.h>
184 #include <dev/pci/bktr/bktr_os.h>
185 #else /* Traditional location for .h files */
186 #include <dev/bktr/ioctl_meteor.h>
187 #include <dev/bktr/ioctl_bt848.h> /* extensions to ioctl_meteor.h */
188 #include <dev/bktr/bktr_reg.h>
189 #include <dev/bktr/bktr_tuner.h>
190 #include <dev/bktr/bktr_card.h>
191 #include <dev/bktr/bktr_audio.h>
192 #include <dev/bktr/bktr_core.h>
193 #include <dev/bktr/bktr_os.h>
194
195 #if defined(BKTR_USE_FREEBSD_SMBUS)
196 #include <dev/bktr/bktr_i2c.h>
197
198 #include "iicbb_if.h"
199 #include "smbus_if.h"
200 #endif
201 #endif
202
203
204 /****************************/
205 /* *** FreeBSD 4.x code *** */
206 /****************************/
207
208 static int bktr_probe( device_t dev );
209 static int bktr_attach( device_t dev );
210 static int bktr_detach( device_t dev );
211 static int bktr_shutdown( device_t dev );
bktr_intr(void * arg)212 static void bktr_intr(void *arg) { common_bktr_intr(arg); }
213
214 static device_method_t bktr_methods[] = {
215 /* Device interface */
216 DEVMETHOD(device_probe, bktr_probe),
217 DEVMETHOD(device_attach, bktr_attach),
218 DEVMETHOD(device_detach, bktr_detach),
219 DEVMETHOD(device_shutdown, bktr_shutdown),
220
221 #if defined(BKTR_USE_FREEBSD_SMBUS)
222 /* iicbb interface */
223 DEVMETHOD(iicbb_callback, bti2c_iic_callback),
224 DEVMETHOD(iicbb_setsda, bti2c_iic_setsda),
225 DEVMETHOD(iicbb_setscl, bti2c_iic_setscl),
226 DEVMETHOD(iicbb_getsda, bti2c_iic_getsda),
227 DEVMETHOD(iicbb_getscl, bti2c_iic_getscl),
228 DEVMETHOD(iicbb_reset, bti2c_iic_reset),
229
230 /* smbus interface */
231 DEVMETHOD(smbus_callback, bti2c_smb_callback),
232 DEVMETHOD(smbus_writeb, bti2c_smb_writeb),
233 DEVMETHOD(smbus_writew, bti2c_smb_writew),
234 DEVMETHOD(smbus_readb, bti2c_smb_readb),
235 #endif
236
237 { 0, 0 }
238 };
239
240 static driver_t bktr_driver = {
241 "bktr",
242 bktr_methods,
243 sizeof(struct bktr_softc),
244 };
245
246 static devclass_t bktr_devclass;
247
248 static d_open_t bktr_open;
249 static d_close_t bktr_close;
250 static d_read_t bktr_read;
251 static d_write_t bktr_write;
252 static d_ioctl_t bktr_ioctl;
253 static d_mmap_t bktr_mmap;
254 static d_poll_t bktr_poll;
255
256 static struct cdevsw bktr_cdevsw = {
257 .d_version = D_VERSION,
258 .d_flags = D_NEEDGIANT,
259 .d_open = bktr_open,
260 .d_close = bktr_close,
261 .d_read = bktr_read,
262 .d_write = bktr_write,
263 .d_ioctl = bktr_ioctl,
264 .d_poll = bktr_poll,
265 .d_mmap = bktr_mmap,
266 .d_name = "bktr",
267 };
268
269 #ifdef BKTR_USE_FREEBSD_SMBUS
270 #include <dev/iicbus/iiconf.h>
271 #include <dev/smbus/smbconf.h>
272 MODULE_DEPEND(bktr, iicbb, IICBB_MINVER, IICBB_MODVER, IICBB_MAXVER);
273 MODULE_DEPEND(bktr, iicbus, IICBUS_MINVER, IICBUS_MODVER, IICBUS_MAXVER);
274 MODULE_DEPEND(bktr, smbus, SMBUS_MINVER, SMBUS_MODVER, SMBUS_MAXVER);
275 #endif
276 DRIVER_MODULE(bktr, pci, bktr_driver, bktr_devclass, 0, 0);
277 MODULE_DEPEND(bktr, bktr_mem, 1,1,1);
278 MODULE_VERSION(bktr, 1);
279
280
281 /*
282 * the boot time probe routine.
283 */
284 static int
bktr_probe(device_t dev)285 bktr_probe( device_t dev )
286 {
287 unsigned int type = pci_get_devid(dev);
288 unsigned int rev = pci_get_revid(dev);
289
290 if (BKTR_PCI_VENDOR(type) == PCI_VENDOR_BROOKTREE)
291 {
292 switch (BKTR_PCI_PRODUCT(type)) {
293 case PCI_PRODUCT_BROOKTREE_BT848:
294 if (rev == 0x12)
295 device_set_desc(dev, "BrookTree 848A");
296 else
297 device_set_desc(dev, "BrookTree 848");
298 return BUS_PROBE_DEFAULT;
299 case PCI_PRODUCT_BROOKTREE_BT849:
300 device_set_desc(dev, "BrookTree 849A");
301 return BUS_PROBE_DEFAULT;
302 case PCI_PRODUCT_BROOKTREE_BT878:
303 device_set_desc(dev, "BrookTree 878");
304 return BUS_PROBE_DEFAULT;
305 case PCI_PRODUCT_BROOKTREE_BT879:
306 device_set_desc(dev, "BrookTree 879");
307 return BUS_PROBE_DEFAULT;
308 }
309 }
310
311 return ENXIO;
312 }
313
314
315 /*
316 * the attach routine.
317 */
318 static int
bktr_attach(device_t dev)319 bktr_attach( device_t dev )
320 {
321 u_long latency;
322 u_long fun;
323 unsigned int rev;
324 unsigned int unit;
325 int error = 0;
326 #ifdef BROOKTREE_IRQ
327 u_long old_irq, new_irq;
328 #endif
329
330 struct bktr_softc *bktr = device_get_softc(dev);
331
332 unit = device_get_unit(dev);
333
334 /* build the device name for bktr_name() */
335 snprintf(bktr->bktr_xname, sizeof(bktr->bktr_xname), "bktr%d",unit);
336
337 /*
338 * Enable bus mastering and Memory Mapped device
339 */
340 pci_enable_busmaster(dev);
341
342 /*
343 * Map control/status registers.
344 */
345 bktr->mem_rid = PCIR_BAR(0);
346 bktr->res_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
347 &bktr->mem_rid, RF_ACTIVE);
348
349 if (!bktr->res_mem) {
350 device_printf(dev, "could not map memory\n");
351 error = ENXIO;
352 goto fail;
353 }
354 bktr->memt = rman_get_bustag(bktr->res_mem);
355 bktr->memh = rman_get_bushandle(bktr->res_mem);
356
357
358 /*
359 * Disable the brooktree device
360 */
361 OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
362 OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
363
364
365 #ifdef BROOKTREE_IRQ /* from the configuration file */
366 old_irq = pci_conf_read(tag, PCI_INTERRUPT_REG);
367 pci_conf_write(tag, PCI_INTERRUPT_REG, BROOKTREE_IRQ);
368 new_irq = pci_conf_read(tag, PCI_INTERRUPT_REG);
369 printf("bktr%d: attach: irq changed from %d to %d\n",
370 unit, (old_irq & 0xff), (new_irq & 0xff));
371 #endif
372
373 /*
374 * Allocate our interrupt.
375 */
376 bktr->irq_rid = 0;
377 bktr->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
378 &bktr->irq_rid, RF_SHAREABLE | RF_ACTIVE);
379 if (bktr->res_irq == NULL) {
380 device_printf(dev, "could not map interrupt\n");
381 error = ENXIO;
382 goto fail;
383 }
384
385 error = bus_setup_intr(dev, bktr->res_irq, INTR_TYPE_TTY,
386 NULL, bktr_intr, bktr, &bktr->res_ih);
387 if (error) {
388 device_printf(dev, "could not setup irq\n");
389 goto fail;
390
391 }
392
393
394 /* Update the Device Control Register */
395 /* on Bt878 and Bt879 cards */
396 fun = pci_read_config( dev, 0x40, 2);
397 fun = fun | 1; /* Enable writes to the sub-system vendor ID */
398
399 #if defined( BKTR_430_FX_MODE )
400 if (bootverbose) printf("Using 430 FX chipset compatibility mode\n");
401 fun = fun | 2; /* Enable Intel 430 FX compatibility mode */
402 #endif
403
404 #if defined( BKTR_SIS_VIA_MODE )
405 if (bootverbose) printf("Using SiS/VIA chipset compatibility mode\n");
406 fun = fun | 4; /* Enable SiS/VIA compatibility mode (useful for
407 OPTi chipset motherboards too */
408 #endif
409 pci_write_config(dev, 0x40, fun, 2);
410
411 #if defined(BKTR_USE_FREEBSD_SMBUS)
412 if (bt848_i2c_attach(dev))
413 printf("bktr%d: i2c_attach: can't attach\n", unit);
414 #endif
415
416 /*
417 * PCI latency timer. 32 is a good value for 4 bus mastering slots, if
418 * you have more than four, then 16 would probably be a better value.
419 */
420 #ifndef BROOKTREE_DEF_LATENCY_VALUE
421 #define BROOKTREE_DEF_LATENCY_VALUE 10
422 #endif
423 latency = pci_read_config(dev, PCI_LATENCY_TIMER, 4);
424 latency = (latency >> 8) & 0xff;
425 if ( bootverbose ) {
426 if (latency)
427 printf("brooktree%d: PCI bus latency is", unit);
428 else
429 printf("brooktree%d: PCI bus latency was 0 changing to",
430 unit);
431 }
432 if ( !latency ) {
433 latency = BROOKTREE_DEF_LATENCY_VALUE;
434 pci_write_config(dev, PCI_LATENCY_TIMER, latency<<8, 4);
435 }
436 if ( bootverbose ) {
437 printf(" %d.\n", (int) latency);
438 }
439
440 /* read the pci device id and revision id */
441 fun = pci_get_devid(dev);
442 rev = pci_get_revid(dev);
443
444 /* call the common attach code */
445 common_bktr_attach( bktr, unit, fun, rev );
446
447 /* make the device entries */
448 bktr->bktrdev = make_dev(&bktr_cdevsw, unit,
449 0, 0, 0444, "bktr%d", unit);
450 bktr->tunerdev= make_dev(&bktr_cdevsw, unit+16,
451 0, 0, 0444, "tuner%d", unit);
452 bktr->vbidev = make_dev(&bktr_cdevsw, unit+32,
453 0, 0, 0444, "vbi%d" , unit);
454
455
456 /* if this is unit 0 (/dev/bktr0, /dev/tuner0, /dev/vbi0) then make */
457 /* alias entries to /dev/bktr /dev/tuner and /dev/vbi */
458 #if (__FreeBSD_version >=500000)
459 if (unit == 0) {
460 bktr->bktrdev_alias = make_dev_alias(bktr->bktrdev, "bktr");
461 bktr->tunerdev_alias= make_dev_alias(bktr->tunerdev, "tuner");
462 bktr->vbidev_alias = make_dev_alias(bktr->vbidev, "vbi");
463 }
464 #endif
465
466 return 0;
467
468 fail:
469 if (bktr->res_irq)
470 bus_release_resource(dev, SYS_RES_IRQ, bktr->irq_rid, bktr->res_irq);
471 if (bktr->res_mem)
472 bus_release_resource(dev, SYS_RES_MEMORY, bktr->mem_rid, bktr->res_mem);
473 return error;
474
475 }
476
477 /*
478 * the detach routine.
479 */
480 static int
bktr_detach(device_t dev)481 bktr_detach( device_t dev )
482 {
483 struct bktr_softc *bktr = device_get_softc(dev);
484
485 #ifdef BKTR_NEW_MSP34XX_DRIVER
486 /* Disable the soundchip and kernel thread */
487 if (bktr->msp3400c_info != NULL)
488 msp_detach(bktr);
489 #endif
490
491 /* Disable the brooktree device */
492 OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
493 OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
494
495 #if defined(BKTR_USE_FREEBSD_SMBUS)
496 if (bt848_i2c_detach(dev))
497 printf("bktr%d: i2c_attach: can't attach\n",
498 device_get_unit(dev));
499 #endif
500 #ifdef USE_VBIMUTEX
501 mtx_destroy(&bktr->vbimutex);
502 #endif
503
504 /* Note: We do not free memory for RISC programs, grab buffer, vbi buffers */
505 /* The memory is retained by the bktr_mem module so we can unload and */
506 /* then reload the main bktr driver module */
507
508 /* Unregister the /dev/bktrN, tunerN and vbiN devices,
509 * the aliases for unit 0 are automatically destroyed */
510 destroy_dev(bktr->vbidev);
511 destroy_dev(bktr->tunerdev);
512 destroy_dev(bktr->bktrdev);
513
514 /*
515 * Deallocate resources.
516 */
517 bus_teardown_intr(dev, bktr->res_irq, bktr->res_ih);
518 bus_release_resource(dev, SYS_RES_IRQ, bktr->irq_rid, bktr->res_irq);
519 bus_release_resource(dev, SYS_RES_MEMORY, bktr->mem_rid, bktr->res_mem);
520
521 return 0;
522 }
523
524 /*
525 * the shutdown routine.
526 */
527 static int
bktr_shutdown(device_t dev)528 bktr_shutdown( device_t dev )
529 {
530 struct bktr_softc *bktr = device_get_softc(dev);
531
532 /* Disable the brooktree device */
533 OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
534 OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
535
536 return 0;
537 }
538
539
540 /*
541 * Special Memory Allocation
542 */
543 vm_offset_t
get_bktr_mem(int unit,unsigned size)544 get_bktr_mem( int unit, unsigned size )
545 {
546 vm_offset_t addr = 0;
547
548 addr = (vm_offset_t)contigmalloc(size, M_DEVBUF, M_NOWAIT, 0,
549 0xffffffff, 1<<24, 0);
550 if (addr == 0)
551 addr = (vm_offset_t)contigmalloc(size, M_DEVBUF, M_NOWAIT, 0,
552 0xffffffff, PAGE_SIZE, 0);
553 if (addr == 0) {
554 printf("bktr%d: Unable to allocate %d bytes of memory.\n",
555 unit, size);
556 }
557
558 return( addr );
559 }
560
561
562 /*---------------------------------------------------------
563 **
564 ** BrookTree 848 character device driver routines
565 **
566 **---------------------------------------------------------
567 */
568
569 #define VIDEO_DEV 0x00
570 #define TUNER_DEV 0x01
571 #define VBI_DEV 0x02
572
573 #define UNIT(x) ((x) & 0x0f)
574 #define FUNCTION(x) (x >> 4)
575
576 /*
577 *
578 */
579 static int
bktr_open(struct cdev * dev,int flags,int fmt,struct thread * td)580 bktr_open( struct cdev *dev, int flags, int fmt, struct thread *td )
581 {
582 bktr_ptr_t bktr;
583 int unit;
584 int result;
585
586 unit = UNIT( dev2unit(dev) );
587
588 /* Get the device data */
589 bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
590 if (bktr == NULL) {
591 /* the device is no longer valid/functioning */
592 return (ENXIO);
593 }
594
595 if (!(bktr->flags & METEOR_INITALIZED)) /* device not found */
596 return( ENXIO );
597
598 /* Record that the device is now busy */
599 device_busy(devclass_get_device(bktr_devclass, unit));
600
601
602 if (bt848_card != -1) {
603 if ((bt848_card >> 8 == unit ) &&
604 ( (bt848_card & 0xff) < Bt848_MAX_CARD )) {
605 if ( bktr->bt848_card != (bt848_card & 0xff) ) {
606 bktr->bt848_card = (bt848_card & 0xff);
607 probeCard(bktr, FALSE, unit);
608 }
609 }
610 }
611
612 if (bt848_tuner != -1) {
613 if ((bt848_tuner >> 8 == unit ) &&
614 ( (bt848_tuner & 0xff) < Bt848_MAX_TUNER )) {
615 if ( bktr->bt848_tuner != (bt848_tuner & 0xff) ) {
616 bktr->bt848_tuner = (bt848_tuner & 0xff);
617 probeCard(bktr, FALSE, unit);
618 }
619 }
620 }
621
622 if (bt848_reverse_mute != -1) {
623 if ((bt848_reverse_mute >> 8) == unit ) {
624 bktr->reverse_mute = bt848_reverse_mute & 0xff;
625 }
626 }
627
628 if (bt848_slow_msp_audio != -1) {
629 if ((bt848_slow_msp_audio >> 8) == unit ) {
630 bktr->slow_msp_audio = (bt848_slow_msp_audio & 0xff);
631 }
632 }
633
634 #ifdef BKTR_NEW_MSP34XX_DRIVER
635 if (bt848_stereo_once != 0) {
636 if ((bt848_stereo_once >> 8) == unit ) {
637 bktr->stereo_once = (bt848_stereo_once & 0xff);
638 }
639 }
640
641 if (bt848_amsound != -1) {
642 if ((bt848_amsound >> 8) == unit ) {
643 bktr->amsound = (bt848_amsound & 0xff);
644 }
645 }
646
647 if (bt848_dolby != -1) {
648 if ((bt848_dolby >> 8) == unit ) {
649 bktr->dolby = (bt848_dolby & 0xff);
650 }
651 }
652 #endif
653
654 switch ( FUNCTION( dev2unit(dev) ) ) {
655 case VIDEO_DEV:
656 result = video_open( bktr );
657 break;
658 case TUNER_DEV:
659 result = tuner_open( bktr );
660 break;
661 case VBI_DEV:
662 result = vbi_open( bktr );
663 break;
664 default:
665 result = ENXIO;
666 break;
667 }
668
669 /* If there was an error opening the device, undo the busy status */
670 if (result != 0)
671 device_unbusy(devclass_get_device(bktr_devclass, unit));
672 return( result );
673 }
674
675
676 /*
677 *
678 */
679 static int
bktr_close(struct cdev * dev,int flags,int fmt,struct thread * td)680 bktr_close( struct cdev *dev, int flags, int fmt, struct thread *td )
681 {
682 bktr_ptr_t bktr;
683 int unit;
684 int result;
685
686 unit = UNIT( dev2unit(dev) );
687
688 /* Get the device data */
689 bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
690 if (bktr == NULL) {
691 /* the device is no longer valid/functioning */
692 return (ENXIO);
693 }
694
695 switch ( FUNCTION( dev2unit(dev) ) ) {
696 case VIDEO_DEV:
697 result = video_close( bktr );
698 break;
699 case TUNER_DEV:
700 result = tuner_close( bktr );
701 break;
702 case VBI_DEV:
703 result = vbi_close( bktr );
704 break;
705 default:
706 return (ENXIO);
707 break;
708 }
709
710 device_unbusy(devclass_get_device(bktr_devclass, unit));
711 return( result );
712 }
713
714
715 /*
716 *
717 */
718 static int
bktr_read(struct cdev * dev,struct uio * uio,int ioflag)719 bktr_read( struct cdev *dev, struct uio *uio, int ioflag )
720 {
721 bktr_ptr_t bktr;
722 int unit;
723
724 unit = UNIT(dev2unit(dev));
725
726 /* Get the device data */
727 bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
728 if (bktr == NULL) {
729 /* the device is no longer valid/functioning */
730 return (ENXIO);
731 }
732
733 switch ( FUNCTION( dev2unit(dev) ) ) {
734 case VIDEO_DEV:
735 return( video_read( bktr, unit, dev, uio ) );
736 case VBI_DEV:
737 return( vbi_read( bktr, uio, ioflag ) );
738 }
739 return( ENXIO );
740 }
741
742
743 /*
744 *
745 */
746 static int
bktr_write(struct cdev * dev,struct uio * uio,int ioflag)747 bktr_write( struct cdev *dev, struct uio *uio, int ioflag )
748 {
749 return( EINVAL ); /* XXX or ENXIO ? */
750 }
751
752
753 /*
754 *
755 */
756 static int
bktr_ioctl(struct cdev * dev,ioctl_cmd_t cmd,caddr_t arg,int flag,struct thread * td)757 bktr_ioctl( struct cdev *dev, ioctl_cmd_t cmd, caddr_t arg, int flag, struct thread *td )
758 {
759 bktr_ptr_t bktr;
760 int unit;
761
762 unit = UNIT(dev2unit(dev));
763
764 /* Get the device data */
765 bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
766 if (bktr == NULL) {
767 /* the device is no longer valid/functioning */
768 return (ENXIO);
769 }
770
771 #ifdef BKTR_GPIO_ACCESS
772 if (bktr->bigbuf == 0 && cmd != BT848_GPIO_GET_EN &&
773 cmd != BT848_GPIO_SET_EN && cmd != BT848_GPIO_GET_DATA &&
774 cmd != BT848_GPIO_SET_DATA) /* no frame buffer allocated (ioctl failed) */
775 return( ENOMEM );
776 #else
777 if (bktr->bigbuf == 0) /* no frame buffer allocated (ioctl failed) */
778 return( ENOMEM );
779 #endif
780
781 switch ( FUNCTION( dev2unit(dev) ) ) {
782 case VIDEO_DEV:
783 return( video_ioctl( bktr, unit, cmd, arg, td ) );
784 case TUNER_DEV:
785 return( tuner_ioctl( bktr, unit, cmd, arg, td ) );
786 }
787
788 return( ENXIO );
789 }
790
791
792 /*
793 *
794 */
795 static int
bktr_mmap(struct cdev * dev,vm_ooffset_t offset,vm_paddr_t * paddr,int nprot,vm_memattr_t * memattr)796 bktr_mmap( struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr,
797 int nprot, vm_memattr_t *memattr )
798 {
799 int unit;
800 bktr_ptr_t bktr;
801
802 unit = UNIT(dev2unit(dev));
803
804 if (FUNCTION(dev2unit(dev)) > 0) /* only allow mmap on /dev/bktr[n] */
805 return( -1 );
806
807 /* Get the device data */
808 bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
809 if (bktr == NULL) {
810 /* the device is no longer valid/functioning */
811 return (ENXIO);
812 }
813
814 if (nprot & PROT_EXEC)
815 return( -1 );
816
817 if (offset < 0)
818 return( -1 );
819
820 if (offset >= bktr->alloc_pages * PAGE_SIZE)
821 return( -1 );
822
823 *paddr = vtophys(bktr->bigbuf) + offset;
824 return( 0 );
825 }
826
827 static int
bktr_poll(struct cdev * dev,int events,struct thread * td)828 bktr_poll( struct cdev *dev, int events, struct thread *td)
829 {
830 int unit;
831 bktr_ptr_t bktr;
832 int revents = 0;
833 DECLARE_INTR_MASK(s);
834
835 unit = UNIT(dev2unit(dev));
836
837 /* Get the device data */
838 bktr = (struct bktr_softc*)devclass_get_softc(bktr_devclass, unit);
839 if (bktr == NULL) {
840 /* the device is no longer valid/functioning */
841 return (ENXIO);
842 }
843
844 LOCK_VBI(bktr);
845 DISABLE_INTR(s);
846
847 if (events & (POLLIN | POLLRDNORM)) {
848
849 switch ( FUNCTION( dev2unit(dev) ) ) {
850 case VBI_DEV:
851 if(bktr->vbisize == 0)
852 selrecord(td, &bktr->vbi_select);
853 else
854 revents |= events & (POLLIN | POLLRDNORM);
855 break;
856 }
857 }
858
859 ENABLE_INTR(s);
860 UNLOCK_VBI(bktr);
861
862 return (revents);
863 }
864
865 /*****************/
866 /* *** BSDI *** */
867 /*****************/
868
869 #if defined(__bsdi__)
870 #endif /* __bsdi__ BSDI specific kernel interface routines */
871
872
873 /*****************************/
874 /* *** OpenBSD / NetBSD *** */
875 /*****************************/
876 #if defined(__NetBSD__) || defined(__OpenBSD__)
877
878 #define IPL_VIDEO IPL_BIO /* XXX */
879
bktr_intr(void * arg)880 static int bktr_intr(void *arg) { return common_bktr_intr(arg); }
881
882 #define bktr_open bktropen
883 #define bktr_close bktrclose
884 #define bktr_read bktrread
885 #define bktr_write bktrwrite
886 #define bktr_ioctl bktrioctl
887 #define bktr_mmap bktrmmap
888
889 vm_offset_t vm_page_alloc_contig(vm_offset_t, vm_offset_t,
890 vm_offset_t, vm_offset_t);
891
892 #if defined(__OpenBSD__)
893 static int bktr_probe(struct device *, void *, void *);
894 static void bktr_attach(struct device *, struct device *, void *);
895 #else
896 static int bktr_probe(device_t, struct cfdata *, void *);
897 static void bktr_attach(device_t, device_t, void *);
898 #endif
899
900 struct cfattach bktr_ca = {
901 sizeof(struct bktr_softc), bktr_probe, bktr_attach
902 };
903
904 #if defined(__NetBSD__)
905 extern struct cfdriver bktr_cd;
906 #else
907 struct cfdriver bktr_cd = {
908 NULL, "bktr", DV_DULL
909 };
910 #endif
911
912 int
bktr_probe(parent,match,aux)913 bktr_probe(parent, match, aux)
914 #if defined(__OpenBSD__)
915 struct device *parent;
916 void *match;
917 #else
918 device_t parent;
919 struct cfdata *match;
920 #endif
921 void *aux;
922 {
923 struct pci_attach_args *pa = aux;
924
925 if (BKTR_PCI_VENDOR(pa->pa_id) == PCI_VENDOR_BROOKTREE &&
926 (BKTR_PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT848 ||
927 BKTR_PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT849 ||
928 BKTR_PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT878 ||
929 BKTR_PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT879))
930 return 1;
931
932 return 0;
933 }
934
935
936 /*
937 * the attach routine.
938 */
939 static void
bktr_attach(parent,self,aux)940 bktr_attach(parent, self, aux)
941 #if defined(__OpenBSD__)
942 struct device *parent;
943 struct device *self;
944 #else
945 device_t parent;
946 device_t self;
947 #endif
948 void *aux;
949 {
950 bktr_ptr_t bktr;
951 u_long latency;
952 u_long fun;
953 unsigned int rev;
954
955 #if defined(__OpenBSD__)
956 struct pci_attach_args *pa = aux;
957 pci_chipset_tag_t pc = pa->pa_pc;
958
959 pci_intr_handle_t ih;
960 const char *intrstr;
961 int retval;
962 int unit;
963
964 bktr = (bktr_ptr_t)self;
965 unit = bktr->bktr_dev.dv_unit;
966
967 bktr->pc = pa->pa_pc;
968 bktr->tag = pa->pa_tag;
969 bktr->dmat = pa->pa_dmat;
970
971 /*
972 * map memory
973 */
974 bktr->memt = pa->pa_memt;
975 retval = pci_mem_find(pc, pa->pa_tag, PCI_MAPREG_START,
976 &bktr->phys_base, &bktr->obmemsz, NULL);
977 if (!retval)
978 retval = bus_space_map(pa->pa_memt, bktr->phys_base,
979 bktr->obmemsz, 0, &bktr->memh);
980 if (retval) {
981 printf(": couldn't map memory\n");
982 return;
983 }
984
985
986 /*
987 * map interrupt
988 */
989 if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
990 pa->pa_intrline, &ih)) {
991 printf(": couldn't map interrupt\n");
992 return;
993 }
994 intrstr = pci_intr_string(pa->pa_pc, ih);
995
996 bktr->ih = pci_intr_establish(pa->pa_pc, ih, IPL_VIDEO,
997 bktr_intr, bktr, bktr->bktr_dev.dv_xname);
998 if (bktr->ih == NULL) {
999 printf(": couldn't establish interrupt");
1000 if (intrstr != NULL)
1001 printf(" at %s", intrstr);
1002 printf("\n");
1003 return;
1004 }
1005
1006 if (intrstr != NULL)
1007 printf(": %s\n", intrstr);
1008 #endif /* __OpenBSD__ */
1009
1010 #if defined(__NetBSD__)
1011 struct pci_attach_args *pa = aux;
1012 pci_intr_handle_t ih;
1013 const char *intrstr;
1014 int retval;
1015 int unit;
1016
1017 bktr = (bktr_ptr_t)self;
1018 unit = bktr->bktr_dev.dv_unit;
1019 bktr->dmat = pa->pa_dmat;
1020
1021 printf("\n");
1022
1023 /*
1024 * map memory
1025 */
1026 retval = pci_mapreg_map(pa, PCI_MAPREG_START,
1027 PCI_MAPREG_TYPE_MEM
1028 | PCI_MAPREG_MEM_TYPE_32BIT, 0,
1029 &bktr->memt, &bktr->memh, NULL,
1030 &bktr->obmemsz);
1031 DPR(("pci_mapreg_map: memt %x, memh %x, size %x\n",
1032 bktr->memt, (u_int)bktr->memh, (u_int)bktr->obmemsz));
1033 if (retval) {
1034 printf("%s: couldn't map memory\n", bktr_name(bktr));
1035 return;
1036 }
1037
1038 /*
1039 * Disable the brooktree device
1040 */
1041 OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
1042 OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
1043
1044 /*
1045 * map interrupt
1046 */
1047 if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
1048 pa->pa_intrline, &ih)) {
1049 printf("%s: couldn't map interrupt\n",
1050 bktr_name(bktr));
1051 return;
1052 }
1053 intrstr = pci_intr_string(pa->pa_pc, ih);
1054 bktr->ih = pci_intr_establish(pa->pa_pc, ih, IPL_VIDEO,
1055 bktr_intr, bktr);
1056 if (bktr->ih == NULL) {
1057 printf("%s: couldn't establish interrupt",
1058 bktr_name(bktr));
1059 if (intrstr != NULL)
1060 printf(" at %s", intrstr);
1061 printf("\n");
1062 return;
1063 }
1064 if (intrstr != NULL)
1065 printf("%s: interrupting at %s\n", bktr_name(bktr),
1066 intrstr);
1067 #endif /* __NetBSD__ */
1068
1069 /*
1070 * PCI latency timer. 32 is a good value for 4 bus mastering slots, if
1071 * you have more than four, then 16 would probably be a better value.
1072 */
1073 #ifndef BROOKTREE_DEF_LATENCY_VALUE
1074 #define BROOKTREE_DEF_LATENCY_VALUE 10
1075 #endif
1076 latency = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_LATENCY_TIMER);
1077 latency = (latency >> 8) & 0xff;
1078
1079 if (!latency) {
1080 if (bootverbose) {
1081 printf("%s: PCI bus latency was 0 changing to %d",
1082 bktr_name(bktr), BROOKTREE_DEF_LATENCY_VALUE);
1083 }
1084 latency = BROOKTREE_DEF_LATENCY_VALUE;
1085 pci_conf_write(pa->pa_pc, pa->pa_tag,
1086 PCI_LATENCY_TIMER, latency<<8);
1087 }
1088
1089
1090 /* Enabled Bus Master
1091 XXX: check if all old DMA is stopped first (e.g. after warm
1092 boot) */
1093 fun = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
1094 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
1095 fun | PCI_COMMAND_MASTER_ENABLE);
1096
1097 /* read the pci id and determine the card type */
1098 fun = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ID_REG);
1099 rev = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG) & 0x000000ff;
1100
1101 common_bktr_attach(bktr, unit, fun, rev);
1102 }
1103
1104
1105 /*
1106 * Special Memory Allocation
1107 */
1108 vm_offset_t
get_bktr_mem(bktr,dmapp,size)1109 get_bktr_mem(bktr, dmapp, size)
1110 bktr_ptr_t bktr;
1111 bus_dmamap_t *dmapp;
1112 unsigned int size;
1113 {
1114 bus_dma_tag_t dmat = bktr->dmat;
1115 bus_dma_segment_t seg;
1116 bus_size_t align;
1117 int rseg;
1118 caddr_t kva;
1119
1120 /*
1121 * Allocate a DMA area
1122 */
1123 align = 1 << 24;
1124 if (bus_dmamem_alloc(dmat, size, align, 0, &seg, 1,
1125 &rseg, BUS_DMA_NOWAIT)) {
1126 align = PAGE_SIZE;
1127 if (bus_dmamem_alloc(dmat, size, align, 0, &seg, 1,
1128 &rseg, BUS_DMA_NOWAIT)) {
1129 printf("%s: Unable to dmamem_alloc of %d bytes\n",
1130 bktr_name(bktr), size);
1131 return 0;
1132 }
1133 }
1134 if (bus_dmamem_map(dmat, &seg, rseg, size,
1135 &kva, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
1136 printf("%s: Unable to dmamem_map of %d bytes\n",
1137 bktr_name(bktr), size);
1138 bus_dmamem_free(dmat, &seg, rseg);
1139 return 0;
1140 }
1141 #ifdef __OpenBSD__
1142 bktr->dm_mapsize = size;
1143 #endif
1144 /*
1145 * Create and locd the DMA map for the DMA area
1146 */
1147 if (bus_dmamap_create(dmat, size, 1, size, 0, BUS_DMA_NOWAIT, dmapp)) {
1148 printf("%s: Unable to dmamap_create of %d bytes\n",
1149 bktr_name(bktr), size);
1150 bus_dmamem_unmap(dmat, kva, size);
1151 bus_dmamem_free(dmat, &seg, rseg);
1152 return 0;
1153 }
1154 if (bus_dmamap_load(dmat, *dmapp, kva, size, NULL, BUS_DMA_NOWAIT)) {
1155 printf("%s: Unable to dmamap_load of %d bytes\n",
1156 bktr_name(bktr), size);
1157 bus_dmamem_unmap(dmat, kva, size);
1158 bus_dmamem_free(dmat, &seg, rseg);
1159 bus_dmamap_destroy(dmat, *dmapp);
1160 return 0;
1161 }
1162 return (vm_offset_t)kva;
1163 }
1164
1165 void
free_bktr_mem(bktr,dmap,kva)1166 free_bktr_mem(bktr, dmap, kva)
1167 bktr_ptr_t bktr;
1168 bus_dmamap_t dmap;
1169 vm_offset_t kva;
1170 {
1171 bus_dma_tag_t dmat = bktr->dmat;
1172
1173 #ifdef __NetBSD__
1174 bus_dmamem_unmap(dmat, (caddr_t)kva, dmap->dm_mapsize);
1175 #else
1176 bus_dmamem_unmap(dmat, (caddr_t)kva, bktr->dm_mapsize);
1177 #endif
1178 bus_dmamem_free(dmat, dmap->dm_segs, 1);
1179 bus_dmamap_destroy(dmat, dmap);
1180 }
1181
1182
1183 /*---------------------------------------------------------
1184 **
1185 ** BrookTree 848 character device driver routines
1186 **
1187 **---------------------------------------------------------
1188 */
1189
1190
1191 #define VIDEO_DEV 0x00
1192 #define TUNER_DEV 0x01
1193 #define VBI_DEV 0x02
1194
1195 #define UNIT(x) (dev2unit((x) & 0x0f))
1196 #define FUNCTION(x) (dev2unit((x >> 4) & 0x0f))
1197
1198 /*
1199 *
1200 */
1201 int
bktr_open(dev_t dev,int flags,int fmt,struct thread * td)1202 bktr_open(dev_t dev, int flags, int fmt, struct thread *td)
1203 {
1204 bktr_ptr_t bktr;
1205 int unit;
1206
1207 unit = UNIT(dev);
1208
1209 /* unit out of range */
1210 if ((unit > bktr_cd.cd_ndevs) || (bktr_cd.cd_devs[unit] == NULL))
1211 return(ENXIO);
1212
1213 bktr = bktr_cd.cd_devs[unit];
1214
1215 if (!(bktr->flags & METEOR_INITALIZED)) /* device not found */
1216 return(ENXIO);
1217
1218 switch (FUNCTION(dev)) {
1219 case VIDEO_DEV:
1220 return(video_open(bktr));
1221 case TUNER_DEV:
1222 return(tuner_open(bktr));
1223 case VBI_DEV:
1224 return(vbi_open(bktr));
1225 }
1226
1227 return(ENXIO);
1228 }
1229
1230
1231 /*
1232 *
1233 */
1234 int
bktr_close(dev_t dev,int flags,int fmt,struct thread * td)1235 bktr_close(dev_t dev, int flags, int fmt, struct thread *td)
1236 {
1237 bktr_ptr_t bktr;
1238 int unit;
1239
1240 unit = UNIT(dev);
1241
1242 bktr = bktr_cd.cd_devs[unit];
1243
1244 switch (FUNCTION(dev)) {
1245 case VIDEO_DEV:
1246 return(video_close(bktr));
1247 case TUNER_DEV:
1248 return(tuner_close(bktr));
1249 case VBI_DEV:
1250 return(vbi_close(bktr));
1251 }
1252
1253 return(ENXIO);
1254 }
1255
1256 /*
1257 *
1258 */
1259 int
bktr_read(dev_t dev,struct uio * uio,int ioflag)1260 bktr_read(dev_t dev, struct uio *uio, int ioflag)
1261 {
1262 bktr_ptr_t bktr;
1263 int unit;
1264
1265 unit = UNIT(dev);
1266
1267 bktr = bktr_cd.cd_devs[unit];
1268
1269 switch (FUNCTION(dev)) {
1270 case VIDEO_DEV:
1271 return(video_read(bktr, unit, dev, uio));
1272 case VBI_DEV:
1273 return(vbi_read(bktr, uio, ioflag));
1274 }
1275
1276 return(ENXIO);
1277 }
1278
1279
1280 /*
1281 *
1282 */
1283 int
bktr_write(dev_t dev,struct uio * uio,int ioflag)1284 bktr_write(dev_t dev, struct uio *uio, int ioflag)
1285 {
1286 /* operation not supported */
1287 return(EOPNOTSUPP);
1288 }
1289
1290 /*
1291 *
1292 */
1293 int
bktr_ioctl(dev_t dev,ioctl_cmd_t cmd,caddr_t arg,int flag,struct thread * td)1294 bktr_ioctl(dev_t dev, ioctl_cmd_t cmd, caddr_t arg, int flag, struct thread *td)
1295 {
1296 bktr_ptr_t bktr;
1297 int unit;
1298
1299 unit = UNIT(dev);
1300
1301 bktr = bktr_cd.cd_devs[unit];
1302
1303 if (bktr->bigbuf == 0) /* no frame buffer allocated (ioctl failed) */
1304 return(ENOMEM);
1305
1306 switch (FUNCTION(dev)) {
1307 case VIDEO_DEV:
1308 return(video_ioctl(bktr, unit, cmd, arg, pr));
1309 case TUNER_DEV:
1310 return(tuner_ioctl(bktr, unit, cmd, arg, pr));
1311 }
1312
1313 return(ENXIO);
1314 }
1315
1316 /*
1317 *
1318 */
1319 paddr_t
bktr_mmap(dev_t dev,off_t offset,int nprot)1320 bktr_mmap(dev_t dev, off_t offset, int nprot)
1321 {
1322 int unit;
1323 bktr_ptr_t bktr;
1324
1325 unit = UNIT(dev);
1326
1327 if (FUNCTION(dev) > 0) /* only allow mmap on /dev/bktr[n] */
1328 return(-1);
1329
1330 bktr = bktr_cd.cd_devs[unit];
1331
1332 if ((vaddr_t)offset < 0)
1333 return(-1);
1334
1335 if ((vaddr_t)offset >= bktr->alloc_pages * PAGE_SIZE)
1336 return(-1);
1337
1338 #ifdef __NetBSD__
1339 return (bus_dmamem_mmap(bktr->dmat, bktr->dm_mem->dm_segs, 1,
1340 (vaddr_t)offset, nprot, BUS_DMA_WAITOK));
1341 #else
1342 return(i386_btop(vtophys(bktr->bigbuf) + offset));
1343 #endif
1344 }
1345
1346 #endif /* __NetBSD__ || __OpenBSD__ */
1347