summaryrefslogtreecommitdiffstats
path: root/sys/dev/usb/ufm.c
blob: f8d640b3b93b2ac58558682c95ce86a0730640a3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
/*
 * Copyright (c) 2001 M. Warner Losh
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This code is based on ugen.c and ulpt.c developed by Lennart Augustsson.
 * This code includes software developed by the NetBSD Foundation, Inc. and
 * its contributors.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");


#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#if defined(__NetBSD__)
#include <sys/device.h>
#include <sys/ioctl.h>
#elif defined(__FreeBSD__)
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/ioccom.h>
#endif
#include <sys/fcntl.h>
#include <sys/filio.h>
#include <sys/conf.h>
#include <sys/uio.h>
#include <sys/tty.h>
#include <sys/file.h>
#if __FreeBSD_version >= 500014
#include <sys/selinfo.h>
#else
#include <sys/select.h>
#endif
#include <sys/poll.h>
#include <sys/sysctl.h>

#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>

#include <dev/usb/usbdevs.h>
#include <dev/usb/dsbr100io.h>

#ifdef USB_DEBUG
#define DPRINTF(x)	if (ufmdebug) logprintf x
#define DPRINTFN(n,x)	if (ufmdebug>(n)) logprintf x
int	ufmdebug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, ufm, CTLFLAG_RW, 0, "USB ufm");
SYSCTL_INT(_hw_usb_ufm, OID_AUTO, debug, CTLFLAG_RW,
	   &ufmdebug, 0, "ufm debug level");
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif

#if defined(__NetBSD__) || defined(__OpenBSD__)
int ufmopen(dev_t, int, int, usb_proc_ptr);
int ufmclose(dev_t, int, int, usb_proc_ptr);
int ufmioctl(dev_t, u_long, caddr_t, int, usb_proc_ptr);

cdev_decl(ufm);
#elif defined(__FreeBSD__)
d_open_t  ufmopen;
d_close_t ufmclose;
d_ioctl_t ufmioctl;

Static struct cdevsw ufm_cdevsw = {
	.d_version =	D_VERSION,
	.d_flags =	D_NEEDGIANT,
	.d_open =	ufmopen,
	.d_close =	ufmclose,
	.d_ioctl =	ufmioctl,
	.d_name =	"ufm",
#if (__FreeBSD_version < 500014)
 	.d_bmaj =	-1
#endif
};
#endif  /*defined(__FreeBSD__)*/

#define FM_CMD0		0x00
#define FM_CMD_SET_FREQ	0x01
#define FM_CMD2		0x02

struct ufm_softc {
 	USBBASEDEVICE sc_dev;
	usbd_device_handle sc_udev;
	usbd_interface_handle sc_iface;

	int sc_opened;
	int sc_epaddr;
	int sc_freq;

	int sc_refcnt;
#if defined(__NetBSD__) || defined(__OpenBSD__)
	u_char sc_dying;
#endif
};

#define UFMUNIT(n) (minor(n))

USB_DECLARE_DRIVER(ufm);

USB_MATCH(ufm)
{
	USB_MATCH_START(ufm, uaa);
	usb_device_descriptor_t *dd;

	DPRINTFN(10,("ufm_match\n"));
	if (!uaa->iface)
		return UMATCH_NONE;

	dd = usbd_get_device_descriptor(uaa->device);

	if (dd &&
	    ((UGETW(dd->idVendor) == USB_VENDOR_CYPRESS &&
	    UGETW(dd->idProduct) == USB_PRODUCT_CYPRESS_FMRADIO)))
		return UMATCH_VENDOR_PRODUCT;
	else
		return UMATCH_NONE;
}

USB_ATTACH(ufm)
{
	USB_ATTACH_START(ufm, sc, uaa);
	char devinfo[1024];
	usb_endpoint_descriptor_t *edesc;
	usbd_device_handle udev;
	usbd_interface_handle iface;
	u_int8_t epcount;
#if defined(__NetBSD__) || defined(__OpenBSD__)
	u_int8_t niface;
#endif
	usbd_status r;
	char * ermsg = "<none>";

	DPRINTFN(10,("ufm_attach: sc=%p\n", sc));
	usbd_devinfo(uaa->device, 0, devinfo);
	USB_ATTACH_SETUP;
	printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo);

	sc->sc_udev = udev = uaa->device;

#if defined(__FreeBSD__)
 	if ((!uaa->device) || (!uaa->iface)) {
		ermsg = "device or iface";
 		goto nobulk;
	}
	sc->sc_iface = iface = uaa->iface;
#elif defined(__NetBSD__) || defined(__OpenBSD__)
 	if (!udev) {
		ermsg = "device";
 		goto nobulk;
	}
	r = usbd_interface_count(udev, &niface);
	if (r) {
		ermsg = "iface";
		goto nobulk;
	}
	r = usbd_device2interface_handle(udev, 0, &iface);
	if (r) {
		ermsg = "iface";
		goto nobulk;
	}
	sc->sc_iface = iface;
#endif
	sc->sc_opened = 0;
	sc->sc_refcnt = 0;

	r = usbd_endpoint_count(iface, &epcount);
	if (r != USBD_NORMAL_COMPLETION) {
		ermsg = "endpoints";
		goto nobulk;
	}

	edesc = usbd_interface2endpoint_descriptor(iface, 0);
	if (!edesc) {
		ermsg = "interface endpoint";
		goto nobulk;
	}
	sc->sc_epaddr = edesc->bEndpointAddress;

#if defined(__FreeBSD__)
	/* XXX no error trapping, no storing of struct cdev **/
	(void) make_dev(&ufm_cdevsw, device_get_unit(self),
			UID_ROOT, GID_OPERATOR,
			0644, "ufm%d", device_get_unit(self));
#elif defined(__NetBSD__) || defined(__OpenBSD__)
	usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
			   USBDEV(sc->sc_dev));
#endif

	DPRINTFN(10, ("ufm_attach: %p\n", sc->sc_udev));

	USB_ATTACH_SUCCESS_RETURN;

 nobulk:
	printf("%s: could not find %s\n", USBDEVNAME(sc->sc_dev),ermsg);
	USB_ATTACH_ERROR_RETURN;
}


int
ufmopen(struct cdev *dev, int flag, int mode, usb_proc_ptr td)
{
	struct ufm_softc *sc;

	int unit = UFMUNIT(dev);
	USB_GET_SC_OPEN(ufm, unit, sc);

	DPRINTFN(5, ("ufmopen: flag=%d, mode=%d, unit=%d\n",
		     flag, mode, unit));

	if (sc->sc_opened)
		return (EBUSY);

	if ((flag & (FWRITE|FREAD)) != (FWRITE|FREAD))
		return (EACCES);

	sc->sc_opened = 1;
	return (0);
}

int
ufmclose(struct cdev *dev, int flag, int mode, usb_proc_ptr td)
{
	struct ufm_softc *sc;

	int unit = UFMUNIT(dev);
	USB_GET_SC(ufm, unit, sc);

	DPRINTFN(5, ("ufmclose: flag=%d, mode=%d, unit=%d\n", flag, mode, unit));
	sc->sc_opened = 0;
	sc->sc_refcnt = 0;
	return 0;
}

static int
ufm_do_req(struct ufm_softc *sc, u_int8_t reqtype, u_int8_t request,
    u_int16_t value, u_int16_t index, u_int8_t len, void *retbuf)
{
	int s;
	usb_device_request_t req;
	usbd_status err;

	s = splusb();
	req.bmRequestType = reqtype;
	req.bRequest = request;
	USETW(req.wValue, value);
	USETW(req.wIndex, index);
	USETW(req.wLength, len);
	err = usbd_do_request_flags(sc->sc_udev, &req, retbuf, 0, NULL,
	    USBD_DEFAULT_TIMEOUT);
	splx(s);
	if (err) {
		printf("usbd_do_request_flags returned %#x\n", err);
		return (EIO);
	}
	return (0);
}

static int
ufm_set_freq(struct ufm_softc *sc, caddr_t addr)
{
	int freq = *(int *)addr;
	u_int8_t ret;

	/*
	 * Freq now is in Hz.  We need to convert it to the frequency
	 * that the radio wants.  This frequency is 10.7MHz above
	 * the actual frequency.  We then need to convert to
	 * units of 12.5kHz.  We add one to the IFM to make rounding
	 * easier.
	 */
	sc->sc_freq = freq;
	freq = (freq + 10700001) / 12500;
	/* This appears to set the frequency */
	if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD_SET_FREQ, freq >> 8,
	    freq, 1, &ret) != 0)
		return (EIO);
	/* Not sure what this does */
	if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD0, 0x96, 0xb7, 1,
	    &ret) != 0)
		return (EIO);
	return (0);
}

static int
ufm_get_freq(struct ufm_softc *sc, caddr_t addr)
{
	int *valp = (int *)addr;
	*valp = sc->sc_freq;
	return (0);
}

static int
ufm_start(struct ufm_softc *sc, caddr_t addr)
{
	u_int8_t ret;

	if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD0, 0x00, 0xc7,
	    1, &ret))
		return (EIO);
	if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD2, 0x01, 0x00,
	    1, &ret))
		return (EIO);
	if (ret & 0x1)
		return (EIO);
	return (0);
}

static int
ufm_stop(struct ufm_softc *sc, caddr_t addr)
{
	u_int8_t ret;

	if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD0, 0x16, 0x1C,
	    1, &ret))
		return (EIO);
	if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD2, 0x00, 0x00,
	    1, &ret))
		return (EIO);
	return (0);
}

static int
ufm_get_stat(struct ufm_softc *sc, caddr_t addr)
{
	u_int8_t ret;

	/*
	 * Note, there's a 240ms settle time before the status
	 * will be valid, so tsleep that amount.  hz/4 is a good
	 * approximation of that.  Since this is a short sleep
	 * we don't try to catch any signals to keep things
	 * simple.
	 */
	tsleep(sc, 0, "ufmwait", hz/4);
	if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD0, 0x00, 0x24,
	    1, &ret))
		return (EIO);
	*(int *)addr = ret;

	return (0);
}

int
ufmioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, usb_proc_ptr td)
{
	struct ufm_softc *sc;

	int unit = UFMUNIT(dev);
	int error = 0;

	USB_GET_SC(ufm, unit, sc);

	switch (cmd) {
	case FM_SET_FREQ:
		error = ufm_set_freq(sc, addr);
		break;
	case FM_GET_FREQ:
		error = ufm_get_freq(sc, addr);
		break;
	case FM_START:
		error = ufm_start(sc, addr);
		break;
	case FM_STOP:
		error = ufm_stop(sc, addr);
		break;
	case FM_GET_STAT:
		error = ufm_get_stat(sc, addr);
		break;
	default:
		return ENOTTY;
		break;
	}
	return error;
}


#if defined(__NetBSD__) || defined(__OpenBSD__)
int
ufm_activate(device_ptr_t self, enum devact act)
{
	struct ufm_softc *sc = (struct ufm_softc *)self;

	switch (act) {
	case DVACT_ACTIVATE:
		return (EOPNOTSUPP);
		break;

	case DVACT_DEACTIVATE:
		sc->sc_dying = 1;
		break;
	}
	return (0);
}

USB_DETACH(ufm)
{
	USB_DETACH_START(ufm, sc);
	struct ufm_endpoint *sce;
	int i, dir;
	int s;
#if defined(__NetBSD__) || defined(__OpenBSD__)
	int maj, mn;

	DPRINTF(("ufm_detach: sc=%p flags=%d\n", sc, flags));
#elif defined(__FreeBSD__)
	DPRINTF(("ufm_detach: sc=%p\n", sc));
#endif

	sc->sc_dying = 1;

	s = splusb();
	if (--sc->sc_refcnt >= 0) {
		/* Wait for processes to go away. */
		usb_detach_wait(USBDEV(sc->sc_dev));
	}
	splx(s);

#if defined(__NetBSD__) || defined(__OpenBSD__)
	/* locate the major number */
	for (maj = 0; maj < nchrdev; maj++)
		if (cdevsw[maj].d_open == ufmopen)
			break;

	/* Nuke the vnodes for any open instances (calls close). */
	mn = self->dv_unit * USB_MAX_ENDPOINTS;
	vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR);
#elif defined(__FreeBSD__)
	/* XXX not implemented yet */
#endif

	usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
			   USBDEV(sc->sc_dev));

	return (0);
}
#endif /* defined(__NetBSD__) || defined(__OpenBSD__) */

#if defined(__FreeBSD__)
Static int
ufm_detach(device_t self)
{
	DPRINTF(("%s: disconnected\n", USBDEVNAME(self)));
	return 0;
}

DRIVER_MODULE(ufm, uhub, ufm_driver, ufm_devclass, usbd_driver_load, 0);
#endif
OpenPOWER on IntegriCloud