uark.c revision 1.5.6.1 1 /* $NetBSD: uark.c,v 1.5.6.1 2012/11/20 03:02:34 tls 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/ucomvar.h>
33
34 #ifdef UARK_DEBUG
35 #define DPRINTFN(n, x) do { if (uarkdebug > (n)) printf x; } while (0)
36 int uarkebug = 0;
37 #else
38 #define DPRINTFN(n, x)
39 #endif
40 #define DPRINTF(x) DPRINTFN(0, x)
41
42 #define UARKBUFSZ 256
43 #define UARK_CONFIG_NO 0
44 #define UARK_IFACE_NO 0
45
46 #define UARK_SET_DATA_BITS(x) (x - 5)
47
48 #define UARK_PARITY_NONE 0x00
49 #define UARK_PARITY_ODD 0x08
50 #define UARK_PARITY_EVEN 0x18
51
52 #define UARK_STOP_BITS_1 0x00
53 #define UARK_STOP_BITS_2 0x04
54
55 #define UARK_BAUD_REF 3000000
56
57 #define UARK_WRITE 0x40
58 #define UARK_READ 0xc0
59
60 #define UARK_REQUEST 0xfe
61
62 struct uark_softc {
63 device_t sc_dev;
64 usbd_device_handle sc_udev;
65 usbd_interface_handle sc_iface;
66 device_t sc_subdev;
67
68 u_char sc_msr;
69 u_char sc_lsr;
70
71 u_char sc_dying;
72 };
73
74 void uark_get_status(void *, int portno, u_char *lsr, u_char *msr);
75 void uark_set(void *, int, int, int);
76 int uark_param(void *, int, struct termios *);
77 void uark_break(void *, int, int);
78 int uark_cmd(struct uark_softc *, uint16_t, uint16_t);
79
80 struct ucom_methods uark_methods = {
81 uark_get_status,
82 uark_set,
83 uark_param,
84 NULL,
85 NULL,
86 NULL,
87 NULL,
88 NULL,
89 };
90
91 static const struct usb_devno uark_devs[] = {
92 { USB_VENDOR_ARKMICROCHIPS, USB_PRODUCT_ARKMICROCHIPS_USBSERIAL },
93 };
94
95 int uark_match(device_t, cfdata_t, void *);
96 void uark_attach(device_t, device_t, void *);
97 int uark_detach(device_t, int);
98 int uark_activate(device_t, enum devact);
99 extern struct cfdriver uark_cd;
100 CFATTACH_DECL_NEW(uark, sizeof(struct uark_softc), uark_match, uark_attach, uark_detach, uark_activate);
101
102 int
103 uark_match(device_t parent, cfdata_t match, void *aux)
104 {
105 struct usb_attach_arg *uaa = aux;
106
107 return (usb_lookup(uark_devs, uaa->vendor, uaa->product) != NULL) ?
108 UMATCH_VENDOR_PRODUCT : UMATCH_NONE;
109 }
110
111 void
112 uark_attach(device_t parent, device_t self, void *aux)
113 {
114 struct uark_softc *sc = device_private(self);
115 struct usb_attach_arg *uaa = aux;
116 usbd_device_handle dev = uaa->device;
117 char *devinfop;
118 struct ucom_attach_args uca;
119 usb_interface_descriptor_t *id;
120 usb_endpoint_descriptor_t *ed;
121 usbd_status error;
122 int i;
123
124 memset(&uca, 0, sizeof(uca));
125 sc->sc_dev = self;
126
127 devinfop = usbd_devinfo_alloc(dev, 0);
128 aprint_naive("\n");
129 aprint_normal("\n");
130 aprint_normal_dev(self, "%s\n", devinfop);
131 usbd_devinfo_free(devinfop);
132
133 sc->sc_udev = dev;
134
135 if (usbd_set_config_index(sc->sc_udev, UARK_CONFIG_NO, 1) != 0) {
136 aprint_error_dev(self, "could not set configuration no\n");
137 sc->sc_dying = 1;
138 return;
139 }
140
141 /* get the first interface handle */
142 error = usbd_device2interface_handle(sc->sc_udev, UARK_IFACE_NO,
143 &sc->sc_iface);
144 if (error != 0) {
145 aprint_error_dev(self, "could not get interface handle\n");
146 sc->sc_dying = 1;
147 return;
148 }
149
150 id = usbd_get_interface_descriptor(sc->sc_iface);
151
152 uca.bulkin = uca.bulkout = -1;
153 for (i = 0; i < id->bNumEndpoints; i++) {
154 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
155 if (ed == NULL) {
156 aprint_error_dev(self, "no endpoint descriptor found for %d\n",
157 i);
158 sc->sc_dying = 1;
159 return;
160 }
161
162 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
163 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK)
164 uca.bulkin = ed->bEndpointAddress;
165 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
166 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK)
167 uca.bulkout = ed->bEndpointAddress;
168 }
169
170 if (uca.bulkin == -1 || uca.bulkout == -1) {
171 aprint_error_dev(self, "missing endpoint\n");
172 sc->sc_dying = 1;
173 return;
174 }
175
176 uca.ibufsize = UARKBUFSZ;
177 uca.obufsize = UARKBUFSZ;
178 uca.ibufsizepad = UARKBUFSZ;
179 uca.opkthdrlen = 0;
180 uca.device = sc->sc_udev;
181 uca.iface = sc->sc_iface;
182 uca.methods = &uark_methods;
183 uca.arg = sc;
184 uca.info = NULL;
185
186 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
187 sc->sc_dev);
188
189 sc->sc_subdev = config_found_sm_loc(self, "ucombus", NULL, &uca,
190 ucomprint, ucomsubmatch);
191
192 return;
193 }
194
195 int
196 uark_detach(device_t self, int flags)
197 {
198 struct uark_softc *sc = device_private(self);
199 int rv = 0;
200
201 sc->sc_dying = 1;
202 if (sc->sc_subdev != NULL) {
203 rv = config_detach(sc->sc_subdev, flags);
204 sc->sc_subdev = NULL;
205 }
206
207 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
208 sc->sc_dev);
209
210 return rv;
211 }
212
213 int
214 uark_activate(device_t self, enum devact act)
215 {
216 struct uark_softc *sc = device_private(self);
217 int rv = 0;
218
219 switch (act) {
220 case DVACT_DEACTIVATE:
221 if (sc->sc_subdev != NULL)
222 rv = config_deactivate(sc->sc_subdev);
223 sc->sc_dying = 1;
224 break;
225 }
226 return (rv);
227 }
228
229 void
230 uark_set(void *vsc, int portno, int reg, int onoff)
231 {
232 struct uark_softc *sc = vsc;
233
234 switch (reg) {
235 case UCOM_SET_BREAK:
236 uark_break(sc, portno, onoff);
237 return;
238 case UCOM_SET_DTR:
239 case UCOM_SET_RTS:
240 default:
241 return;
242 }
243 }
244
245 int
246 uark_param(void *vsc, int portno, struct termios *t)
247 {
248 struct uark_softc *sc = (struct uark_softc *)vsc;
249 int data;
250
251 switch (t->c_ospeed) {
252 case 300:
253 case 600:
254 case 1200:
255 case 1800:
256 case 2400:
257 case 4800:
258 case 9600:
259 case 19200:
260 case 38400:
261 case 57600:
262 case 115200:
263 uark_cmd(sc, 3, 0x83);
264 uark_cmd(sc, 0, (UARK_BAUD_REF / t->c_ospeed) & 0xFF);
265 uark_cmd(sc, 1, (UARK_BAUD_REF / t->c_ospeed) >> 8);
266 uark_cmd(sc, 3, 0x03);
267 break;
268 default:
269 return (EINVAL);
270 }
271
272 if (ISSET(t->c_cflag, CSTOPB))
273 data = UARK_STOP_BITS_2;
274 else
275 data = UARK_STOP_BITS_1;
276
277 if (ISSET(t->c_cflag, PARENB)) {
278 if (ISSET(t->c_cflag, PARODD))
279 data |= UARK_PARITY_ODD;
280 else
281 data |= UARK_PARITY_EVEN;
282 } else
283 data |= UARK_PARITY_NONE;
284
285 switch (ISSET(t->c_cflag, CSIZE)) {
286 case CS5:
287 data |= UARK_SET_DATA_BITS(5);
288 break;
289 case CS6:
290 data |= UARK_SET_DATA_BITS(6);
291 break;
292 case CS7:
293 data |= UARK_SET_DATA_BITS(7);
294 break;
295 case CS8:
296 data |= UARK_SET_DATA_BITS(8);
297 break;
298 }
299
300 uark_cmd(sc, 3, 0x00);
301 uark_cmd(sc, 3, data);
302
303 #if 0
304 /* XXX flow control */
305 if (ISSET(t->c_cflag, CRTSCTS))
306 /* rts/cts flow ctl */
307 } else if (ISSET(t->c_iflag, IXON|IXOFF)) {
308 /* xon/xoff flow ctl */
309 } else {
310 /* disable flow ctl */
311 }
312 #endif
313
314 return (0);
315 }
316
317 void
318 uark_get_status(void *vsc, int portno, u_char *lsr, u_char *msr)
319 {
320 struct uark_softc *sc = vsc;
321
322 if (msr != NULL)
323 *msr = sc->sc_msr;
324 if (lsr != NULL)
325 *lsr = sc->sc_lsr;
326 }
327
328 void
329 uark_break(void *vsc, int portno, int onoff)
330 {
331 #if 0
332 struct uark_softc *sc = vsc;
333
334 #ifdef UARK_DEBUG
335 aprint_normal_dev(sc->sc_dev, "break %s!\n", onoff ? "on" : "off");
336 #endif
337
338 if (onoff)
339 /* break on */
340 uark_cmd(sc, 4, 0x01);
341 else
342 uark_cmd(sc, 4, 0x00);
343 #endif
344 }
345
346 int
347 uark_cmd(struct uark_softc *sc, uint16_t index, uint16_t value)
348 {
349 usb_device_request_t req;
350 usbd_status err;
351
352 req.bmRequestType = UARK_WRITE;
353 req.bRequest = UARK_REQUEST;
354 USETW(req.wValue, value);
355 USETW(req.wIndex, index);
356 USETW(req.wLength, 0);
357 err = usbd_do_request(sc->sc_udev, &req, NULL);
358
359 if (err)
360 return (EIO);
361
362 return (0);
363 }
364