ugensa.c revision 194677 
1/* $FreeBSD: head/sys/dev/usb/serial/ugensa.c 194677 2009-06-23 02:19:59Z thompsa $ */
2/*	$NetBSD: ugensa.c,v 1.9.2.1 2007/03/24 14:55:50 yamt Exp $	*/
3
4/*
5 * Copyright (c) 2004, 2005 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Roland C. Dowdeswell <elric@netbsd.org>.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *        This product includes software developed by the NetBSD
22 *        Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 *    contributors may be used to endorse or promote products derived
25 *    from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40/*
41 * NOTE: all function names beginning like "ugensa_cfg_" can only
42 * be called from within the config thread function !
43 */
44
45#include <sys/stdint.h>
46#include <sys/stddef.h>
47#include <sys/param.h>
48#include <sys/queue.h>
49#include <sys/types.h>
50#include <sys/systm.h>
51#include <sys/kernel.h>
52#include <sys/bus.h>
53#include <sys/linker_set.h>
54#include <sys/module.h>
55#include <sys/lock.h>
56#include <sys/mutex.h>
57#include <sys/condvar.h>
58#include <sys/sysctl.h>
59#include <sys/sx.h>
60#include <sys/unistd.h>
61#include <sys/callout.h>
62#include <sys/malloc.h>
63#include <sys/priv.h>
64
65#include <dev/usb/usb.h>
66#include <dev/usb/usbdi.h>
67#include "usbdevs.h"
68
69#define	USB_DEBUG_VAR usb_debug
70#include <dev/usb/usb_debug.h>
71#include <dev/usb/usb_process.h>
72
73#include <dev/usb/serial/usb_serial.h>
74
75#define	UGENSA_BUF_SIZE		2048	/* bytes */
76#define	UGENSA_CONFIG_INDEX	0
77#define	UGENSA_IFACE_INDEX	0
78#define	UGENSA_IFACE_MAX	8	/* exclusivly */
79
80enum {
81	UGENSA_BULK_DT_WR,
82	UGENSA_BULK_DT_RD,
83	UGENSA_N_TRANSFER,
84};
85
86struct ugensa_sub_softc {
87	struct ucom_softc *sc_ucom_ptr;
88	struct usb_xfer *sc_xfer[UGENSA_N_TRANSFER];
89};
90
91struct ugensa_softc {
92	struct ucom_super_softc sc_super_ucom;
93	struct ucom_softc sc_ucom[UGENSA_IFACE_MAX];
94	struct ugensa_sub_softc sc_sub[UGENSA_IFACE_MAX];
95
96	struct mtx sc_mtx;
97	uint8_t	sc_niface;
98};
99
100/* prototypes */
101
102static device_probe_t ugensa_probe;
103static device_attach_t ugensa_attach;
104static device_detach_t ugensa_detach;
105
106static usb_callback_t ugensa_bulk_write_callback;
107static usb_callback_t ugensa_bulk_read_callback;
108
109static void	ugensa_start_read(struct ucom_softc *);
110static void	ugensa_stop_read(struct ucom_softc *);
111static void	ugensa_start_write(struct ucom_softc *);
112static void	ugensa_stop_write(struct ucom_softc *);
113
114static const struct usb_config
115	ugensa_xfer_config[UGENSA_N_TRANSFER] = {
116
117	[UGENSA_BULK_DT_WR] = {
118		.type = UE_BULK,
119		.endpoint = UE_ADDR_ANY,
120		.direction = UE_DIR_OUT,
121		.bufsize = UGENSA_BUF_SIZE,
122		.flags = {.pipe_bof = 1,.force_short_xfer = 1,},
123		.callback = &ugensa_bulk_write_callback,
124	},
125
126	[UGENSA_BULK_DT_RD] = {
127		.type = UE_BULK,
128		.endpoint = UE_ADDR_ANY,
129		.direction = UE_DIR_IN,
130		.bufsize = UGENSA_BUF_SIZE,
131		.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
132		.callback = &ugensa_bulk_read_callback,
133	},
134};
135
136static const struct ucom_callback ugensa_callback = {
137	.ucom_start_read = &ugensa_start_read,
138	.ucom_stop_read = &ugensa_stop_read,
139	.ucom_start_write = &ugensa_start_write,
140	.ucom_stop_write = &ugensa_stop_write,
141};
142
143static device_method_t ugensa_methods[] = {
144	/* Device methods */
145	DEVMETHOD(device_probe, ugensa_probe),
146	DEVMETHOD(device_attach, ugensa_attach),
147	DEVMETHOD(device_detach, ugensa_detach),
148	{0, 0}
149};
150
151static devclass_t ugensa_devclass;
152
153static driver_t ugensa_driver = {
154	.name = "ugensa",
155	.methods = ugensa_methods,
156	.size = sizeof(struct ugensa_softc),
157};
158
159DRIVER_MODULE(ugensa, uhub, ugensa_driver, ugensa_devclass, NULL, 0);
160MODULE_DEPEND(ugensa, ucom, 1, 1, 1);
161MODULE_DEPEND(ugensa, usb, 1, 1, 1);
162
163static const struct usb_device_id ugensa_devs[] = {
164	{USB_VPI(USB_VENDOR_AIRPRIME, USB_PRODUCT_AIRPRIME_PC5220, 0)},
165	{USB_VPI(USB_VENDOR_CMOTECH, USB_PRODUCT_CMOTECH_CDMA_MODEM1, 0)},
166	{USB_VPI(USB_VENDOR_KYOCERA2, USB_PRODUCT_KYOCERA2_CDMA_MSM_K, 0)},
167	{USB_VPI(USB_VENDOR_HP, USB_PRODUCT_HP_49GPLUS, 0)},
168	{USB_VPI(USB_VENDOR_NOVATEL2, USB_PRODUCT_NOVATEL2_FLEXPACKGPS, 0)},
169};
170
171static int
172ugensa_probe(device_t dev)
173{
174	struct usb_attach_arg *uaa = device_get_ivars(dev);
175
176	if (uaa->usb_mode != USB_MODE_HOST) {
177		return (ENXIO);
178	}
179	if (uaa->info.bConfigIndex != UGENSA_CONFIG_INDEX) {
180		return (ENXIO);
181	}
182	if (uaa->info.bIfaceIndex != 0) {
183		return (ENXIO);
184	}
185	return (usbd_lookup_id_by_uaa(ugensa_devs, sizeof(ugensa_devs), uaa));
186}
187
188static int
189ugensa_attach(device_t dev)
190{
191	struct usb_attach_arg *uaa = device_get_ivars(dev);
192	struct ugensa_softc *sc = device_get_softc(dev);
193	struct ugensa_sub_softc *ssc;
194	struct usb_interface *iface;
195	int32_t error;
196	uint8_t iface_index;
197	int x, cnt;
198
199	device_set_usb_desc(dev);
200	mtx_init(&sc->sc_mtx, "ugensa", NULL, MTX_DEF);
201
202	/* Figure out how many interfaces this device has got */
203	for (cnt = 0; cnt < UGENSA_IFACE_MAX; cnt++) {
204		if ((usbd_get_endpoint(uaa->device, cnt, ugensa_xfer_config + 0) == NULL) ||
205		    (usbd_get_endpoint(uaa->device, cnt, ugensa_xfer_config + 1) == NULL)) {
206			/* we have reached the end */
207			break;
208		}
209	}
210
211	if (cnt == 0) {
212		device_printf(dev, "No interfaces!\n");
213		goto detach;
214	}
215	for (x = 0; x < cnt; x++) {
216		iface = usbd_get_iface(uaa->device, x);
217		if (iface->idesc->bInterfaceClass != UICLASS_VENDOR)
218			/* Not a serial port, most likely a SD reader */
219			continue;
220
221		ssc = sc->sc_sub + sc->sc_niface;
222		ssc->sc_ucom_ptr = sc->sc_ucom + sc->sc_niface;
223
224		iface_index = (UGENSA_IFACE_INDEX + x);
225		error = usbd_transfer_setup(uaa->device,
226		    &iface_index, ssc->sc_xfer, ugensa_xfer_config,
227		    UGENSA_N_TRANSFER, ssc, &sc->sc_mtx);
228
229		if (error) {
230			device_printf(dev, "allocating USB "
231			    "transfers failed!\n");
232			goto detach;
233		}
234		/* clear stall at first run */
235		mtx_lock(&sc->sc_mtx);
236		usbd_xfer_set_stall(ssc->sc_xfer[UGENSA_BULK_DT_WR]);
237		usbd_xfer_set_stall(ssc->sc_xfer[UGENSA_BULK_DT_RD]);
238		mtx_unlock(&sc->sc_mtx);
239
240		/* initialize port number */
241		ssc->sc_ucom_ptr->sc_portno = sc->sc_niface;
242		sc->sc_niface++;
243		if (x != uaa->info.bIfaceIndex)
244			usbd_set_parent_iface(uaa->device, x,
245			    uaa->info.bIfaceIndex);
246	}
247	device_printf(dev, "Found %d interfaces.\n", sc->sc_niface);
248
249	error = ucom_attach(&sc->sc_super_ucom, sc->sc_ucom, sc->sc_niface, sc,
250	    &ugensa_callback, &sc->sc_mtx);
251	if (error) {
252		DPRINTF("attach failed\n");
253		goto detach;
254	}
255	return (0);			/* success */
256
257detach:
258	ugensa_detach(dev);
259	return (ENXIO);			/* failure */
260}
261
262static int
263ugensa_detach(device_t dev)
264{
265	struct ugensa_softc *sc = device_get_softc(dev);
266	uint8_t x;
267
268	ucom_detach(&sc->sc_super_ucom, sc->sc_ucom, sc->sc_niface);
269
270	for (x = 0; x < sc->sc_niface; x++) {
271		usbd_transfer_unsetup(sc->sc_sub[x].sc_xfer, UGENSA_N_TRANSFER);
272	}
273	mtx_destroy(&sc->sc_mtx);
274
275	return (0);
276}
277
278static void
279ugensa_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
280{
281	struct ugensa_sub_softc *ssc = usbd_xfer_softc(xfer);
282	struct usb_page_cache *pc;
283	uint32_t actlen;
284
285	switch (USB_GET_STATE(xfer)) {
286	case USB_ST_SETUP:
287	case USB_ST_TRANSFERRED:
288tr_setup:
289		pc = usbd_xfer_get_frame(xfer, 0);
290		if (ucom_get_data(ssc->sc_ucom_ptr, pc, 0,
291		    UGENSA_BUF_SIZE, &actlen)) {
292			usbd_xfer_set_frame_len(xfer, 0, actlen);
293			usbd_transfer_submit(xfer);
294		}
295		return;
296
297	default:			/* Error */
298		if (error != USB_ERR_CANCELLED) {
299			/* try to clear stall first */
300			usbd_xfer_set_stall(xfer);
301			goto tr_setup;
302		}
303		return;
304	}
305}
306
307static void
308ugensa_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
309{
310	struct ugensa_sub_softc *ssc = usbd_xfer_softc(xfer);
311	struct usb_page_cache *pc;
312	int actlen;
313
314	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
315
316	switch (USB_GET_STATE(xfer)) {
317	case USB_ST_TRANSFERRED:
318		pc = usbd_xfer_get_frame(xfer, 0);
319		ucom_put_data(ssc->sc_ucom_ptr, pc, 0, actlen);
320
321	case USB_ST_SETUP:
322tr_setup:
323		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
324		usbd_transfer_submit(xfer);
325		return;
326
327	default:			/* Error */
328		if (error != USB_ERR_CANCELLED) {
329			/* try to clear stall first */
330			usbd_xfer_set_stall(xfer);
331			goto tr_setup;
332		}
333		return;
334	}
335}
336
337static void
338ugensa_start_read(struct ucom_softc *ucom)
339{
340	struct ugensa_softc *sc = ucom->sc_parent;
341	struct ugensa_sub_softc *ssc = sc->sc_sub + ucom->sc_portno;
342
343	usbd_transfer_start(ssc->sc_xfer[UGENSA_BULK_DT_RD]);
344}
345
346static void
347ugensa_stop_read(struct ucom_softc *ucom)
348{
349	struct ugensa_softc *sc = ucom->sc_parent;
350	struct ugensa_sub_softc *ssc = sc->sc_sub + ucom->sc_portno;
351
352	usbd_transfer_stop(ssc->sc_xfer[UGENSA_BULK_DT_RD]);
353}
354
355static void
356ugensa_start_write(struct ucom_softc *ucom)
357{
358	struct ugensa_softc *sc = ucom->sc_parent;
359	struct ugensa_sub_softc *ssc = sc->sc_sub + ucom->sc_portno;
360
361	usbd_transfer_start(ssc->sc_xfer[UGENSA_BULK_DT_WR]);
362}
363
364static void
365ugensa_stop_write(struct ucom_softc *ucom)
366{
367	struct ugensa_softc *sc = ucom->sc_parent;
368	struct ugensa_sub_softc *ssc = sc->sc_sub + ucom->sc_portno;
369
370	usbd_transfer_stop(ssc->sc_xfer[UGENSA_BULK_DT_WR]);
371}
372