uark.c revision 1.1.6.2 1 /* $NetBSD: uark.c,v 1.1.6.2 2010/08/17 06:46:45 uebayasi Exp $ */
2 /* $OpenBSD: uark.c,v 1.13 2009/10/13 19:33:17 pirofti Exp $ */
3
4 /*
5 * Copyright (c) 2006 Jonathan Gray <jsg (at) openbsd.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 #include <sys/param.h>
21 #include <sys/systm.h>
22 #include <sys/kernel.h>
23 #include <sys/conf.h>
24 #include <sys/tty.h>
25 #include <sys/device.h>
26
27 #include <dev/usb/usb.h>
28 #include <dev/usb/usbdi.h>
29 #include <dev/usb/usbdi_util.h>
30 #include <dev/usb/usbdevs.h>
31
32 #include <dev/usb/usbdevs.h>
33 #include <dev/usb/ucomvar.h>
34
35 #ifdef UARK_DEBUG
36 #define DPRINTFN(n, x) do { if (uarkdebug > (n)) printf x; } while (0)
37 int uarkebug = 0;
38 #else
39 #define DPRINTFN(n, x)
40 #endif
41 #define DPRINTF(x) DPRINTFN(0, x)
42
43 #define UARKBUFSZ 256
44 #define UARK_CONFIG_NO 0
45 #define UARK_IFACE_NO 0
46
47 #define UARK_SET_DATA_BITS(x) (x - 5)
48
49 #define UARK_PARITY_NONE 0x00
50 #define UARK_PARITY_ODD 0x08
51 #define UARK_PARITY_EVEN 0x18
52
53 #define UARK_STOP_BITS_1 0x00
54 #define UARK_STOP_BITS_2 0x04
55
56 #define UARK_BAUD_REF 3000000
57
58 #define UARK_WRITE 0x40
59 #define UARK_READ 0xc0
60
61 #define UARK_REQUEST 0xfe
62
63 struct uark_softc {
64 struct device *sc_dev;
65 usbd_device_handle sc_udev;
66 usbd_interface_handle sc_iface;
67 struct device *sc_subdev;
68
69 u_char sc_msr;
70 u_char sc_lsr;
71
72 u_char sc_dying;
73 };
74
75 void uark_get_status(void *, int portno, u_char *lsr, u_char *msr);
76 void uark_set(void *, int, int, int);
77 int uark_param(void *, int, struct termios *);
78 void uark_break(void *, int, int);
79 int uark_cmd(struct uark_softc *, uint16_t, uint16_t);
80
81 struct ucom_methods uark_methods = {
82 uark_get_status,
83 uark_set,
84 uark_param,
85 NULL,
86 NULL,
87 NULL,
88 NULL,
89 NULL,
90 };
91
92 static const struct usb_devno uark_devs[] = {
93 { USB_VENDOR_ARKMICROCHIPS, USB_PRODUCT_ARKMICROCHIPS_USBSERIAL },
94 };
95
96 USB_DECLARE_DRIVER(uark);
97
98 USB_MATCH(uark)
99 {
100 USB_MATCH_START(uarkcom, uaa);
101
102 return (usb_lookup(uark_devs, uaa->vendor, uaa->product) != NULL) ?
103 UMATCH_VENDOR_PRODUCT : UMATCH_NONE;
104 }
105
106 USB_ATTACH(uark)
107 {
108 USB_ATTACH_START(uark, sc, uaa);
109 usbd_device_handle dev = uaa->device;
110 char *devinfop;
111 struct ucom_attach_args uca;
112 usb_interface_descriptor_t *id;
113 usb_endpoint_descriptor_t *ed;
114 usbd_status error;
115 int i;
116
117 memset(&uca, 0, sizeof(uca));
118 sc->sc_dev = self;
119
120 devinfop = usbd_devinfo_alloc(dev, 0);
121 USB_ATTACH_SETUP;
122 aprint_normal_dev(self, "%s\n", devinfop);
123 usbd_devinfo_free(devinfop);
124
125 sc->sc_udev = dev;
126
127 if (usbd_set_config_index(sc->sc_udev, UARK_CONFIG_NO, 1) != 0) {
128 aprint_error_dev(self, "could not set configuration no\n");
129 sc->sc_dying = 1;
130 return;
131 }
132
133 /* get the first interface handle */
134 error = usbd_device2interface_handle(sc->sc_udev, UARK_IFACE_NO,
135 &sc->sc_iface);
136 if (error != 0) {
137 aprint_error_dev(self, "could not get interface handle\n");
138 sc->sc_dying = 1;
139 return;
140 }
141
142 id = usbd_get_interface_descriptor(sc->sc_iface);
143
144 uca.bulkin = uca.bulkout = -1;
145 for (i = 0; i < id->bNumEndpoints; i++) {
146 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
147 if (ed == NULL) {
148 aprint_error_dev(self, "no endpoint descriptor found for %d\n",
149 i);
150 sc->sc_dying = 1;
151 return;
152 }
153
154 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
155 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK)
156 uca.bulkin = ed->bEndpointAddress;
157 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
158 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK)
159 uca.bulkout = ed->bEndpointAddress;
160 }
161
162 if (uca.bulkin == -1 || uca.bulkout == -1) {
163 aprint_error_dev(self, "missing endpoint\n");
164 sc->sc_dying = 1;
165 return;
166 }
167
168 uca.ibufsize = UARKBUFSZ;
169 uca.obufsize = UARKBUFSZ;
170 uca.ibufsizepad = UARKBUFSZ;
171 uca.opkthdrlen = 0;
172 uca.device = sc->sc_udev;
173 uca.iface = sc->sc_iface;
174 uca.methods = &uark_methods;
175 uca.arg = sc;
176 uca.info = NULL;
177
178 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
179 sc->sc_dev);
180
181 sc->sc_subdev = config_found_sm_loc(self, "ucombus", NULL, &uca,
182 ucomprint, ucomsubmatch);
183
184 USB_ATTACH_SUCCESS_RETURN;
185 }
186
187 int
188 uark_detach(struct device *self, int flags)
189 {
190 struct uark_softc *sc = device_private(self);
191 int rv = 0;
192
193 sc->sc_dying = 1;
194 if (sc->sc_subdev != NULL) {
195 rv = config_detach(sc->sc_subdev, flags);
196 sc->sc_subdev = NULL;
197 }
198
199 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
200 sc->sc_dev);
201
202 return rv;
203 }
204
205 int
206 uark_activate(struct device* self, enum devact act)
207 {
208 struct uark_softc *sc = device_private(self);
209 int rv = 0;
210
211 switch (act) {
212 case DVACT_DEACTIVATE:
213 if (sc->sc_subdev != NULL)
214 rv = config_deactivate(sc->sc_subdev);
215 sc->sc_dying = 1;
216 break;
217 }
218 return (rv);
219 }
220
221 void
222 uark_set(void *vsc, int portno, int reg, int onoff)
223 {
224 struct uark_softc *sc = vsc;
225
226 switch (reg) {
227 case UCOM_SET_BREAK:
228 uark_break(sc, portno, onoff);
229 return;
230 case UCOM_SET_DTR:
231 case UCOM_SET_RTS:
232 default:
233 return;
234 }
235 }
236
237 int
238 uark_param(void *vsc, int portno, struct termios *t)
239 {
240 struct uark_softc *sc = (struct uark_softc *)vsc;
241 int data;
242
243 switch (t->c_ospeed) {
244 case 300:
245 case 600:
246 case 1200:
247 case 1800:
248 case 2400:
249 case 4800:
250 case 9600:
251 case 19200:
252 case 38400:
253 case 57600:
254 case 115200:
255 uark_cmd(sc, 3, 0x83);
256 uark_cmd(sc, 0, (UARK_BAUD_REF / t->c_ospeed) & 0xFF);
257 uark_cmd(sc, 1, (UARK_BAUD_REF / t->c_ospeed) >> 8);
258 uark_cmd(sc, 3, 0x03);
259 break;
260 default:
261 return (EINVAL);
262 }
263
264 if (ISSET(t->c_cflag, CSTOPB))
265 data = UARK_STOP_BITS_2;
266 else
267 data = UARK_STOP_BITS_1;
268
269 if (ISSET(t->c_cflag, PARENB)) {
270 if (ISSET(t->c_cflag, PARODD))
271 data |= UARK_PARITY_ODD;
272 else
273 data |= UARK_PARITY_EVEN;
274 } else
275 data |= UARK_PARITY_NONE;
276
277 switch (ISSET(t->c_cflag, CSIZE)) {
278 case CS5:
279 data |= UARK_SET_DATA_BITS(5);
280 break;
281 case CS6:
282 data |= UARK_SET_DATA_BITS(6);
283 break;
284 case CS7:
285 data |= UARK_SET_DATA_BITS(7);
286 break;
287 case CS8:
288 data |= UARK_SET_DATA_BITS(8);
289 break;
290 }
291
292 uark_cmd(sc, 3, 0x00);
293 uark_cmd(sc, 3, data);
294
295 #if 0
296 /* XXX flow control */
297 if (ISSET(t->c_cflag, CRTSCTS))
298 /* rts/cts flow ctl */
299 } else if (ISSET(t->c_iflag, IXON|IXOFF)) {
300 /* xon/xoff flow ctl */
301 } else {
302 /* disable flow ctl */
303 }
304 #endif
305
306 return (0);
307 }
308
309 void
310 uark_get_status(void *vsc, int portno, u_char *lsr, u_char *msr)
311 {
312 struct uark_softc *sc = vsc;
313
314 if (msr != NULL)
315 *msr = sc->sc_msr;
316 if (lsr != NULL)
317 *lsr = sc->sc_lsr;
318 }
319
320 void
321 uark_break(void *vsc, int portno, int onoff)
322 {
323 #if 0
324 struct uark_softc *sc = vsc;
325
326 #ifdef UARK_DEBUG
327 aprint_normal_dev(sc->sc_dev, "break %s!\n", onoff ? "on" : "off");
328 #endif
329
330 if (onoff)
331 /* break on */
332 uark_cmd(sc, 4, 0x01);
333 else
334 uark_cmd(sc, 4, 0x00);
335 #endif
336 }
337
338 int
339 uark_cmd(struct uark_softc *sc, uint16_t index, uint16_t value)
340 {
341 usb_device_request_t req;
342 usbd_status err;
343
344 req.bmRequestType = UARK_WRITE;
345 req.bRequest = UARK_REQUEST;
346 USETW(req.wValue, value);
347 USETW(req.wIndex, index);
348 USETW(req.wLength, 0);
349 err = usbd_do_request(sc->sc_udev, &req, NULL);
350
351 if (err)
352 return (EIO);
353
354 return (0);
355 }
356