uark.c revision 1.8 1 /* $NetBSD: uark.c,v 1.8 2016/07/07 06:55:42 msaitoh 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 struct usbd_device * sc_udev;
65 struct usbd_interface * 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 .ucom_get_status = uark_get_status,
82 .ucom_set = uark_set,
83 .ucom_param = uark_param,
84 .ucom_ioctl = NULL,
85 .ucom_open = NULL,
86 .ucom_close = NULL,
87 .ucom_read = NULL,
88 .ucom_write = 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->uaa_vendor, uaa->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 struct usbd_device *dev = uaa->uaa_device;
117 char *devinfop;
118 struct ucom_attach_args ucaa;
119 usb_interface_descriptor_t *id;
120 usb_endpoint_descriptor_t *ed;
121 usbd_status error;
122 int i;
123
124 memset(&ucaa, 0, sizeof(ucaa));
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 ucaa.ucaa_bulkin = ucaa.ucaa_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 ucaa.ucaa_bulkin = ed->bEndpointAddress;
165 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
166 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK)
167 ucaa.ucaa_bulkout = ed->bEndpointAddress;
168 }
169
170 if (ucaa.ucaa_bulkin == -1 || ucaa.ucaa_bulkout == -1) {
171 aprint_error_dev(self, "missing endpoint\n");
172 sc->sc_dying = 1;
173 return;
174 }
175
176 ucaa.ucaa_ibufsize = UARKBUFSZ;
177 ucaa.ucaa_obufsize = UARKBUFSZ;
178 ucaa.ucaa_ibufsizepad = UARKBUFSZ;
179 ucaa.ucaa_opkthdrlen = 0;
180 ucaa.ucaa_device = sc->sc_udev;
181 ucaa.ucaa_iface = sc->sc_iface;
182 ucaa.ucaa_methods = &uark_methods;
183 ucaa.ucaa_arg = sc;
184 ucaa.ucaa_info = NULL;
185
186 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev);
187
188 sc->sc_subdev = config_found_sm_loc(self, "ucombus", NULL, &ucaa,
189 ucomprint, ucomsubmatch);
190
191 return;
192 }
193
194 int
195 uark_detach(device_t self, int flags)
196 {
197 struct uark_softc *sc = device_private(self);
198 int rv = 0;
199
200 sc->sc_dying = 1;
201 if (sc->sc_subdev != NULL) {
202 rv = config_detach(sc->sc_subdev, flags);
203 sc->sc_subdev = NULL;
204 }
205
206 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev);
207
208 return rv;
209 }
210
211 int
212 uark_activate(device_t self, enum devact act)
213 {
214 struct uark_softc *sc = device_private(self);
215 int rv = 0;
216
217 switch (act) {
218 case DVACT_DEACTIVATE:
219 if (sc->sc_subdev != NULL)
220 rv = config_deactivate(sc->sc_subdev);
221 sc->sc_dying = 1;
222 break;
223 }
224 return (rv);
225 }
226
227 void
228 uark_set(void *vsc, int portno, int reg, int onoff)
229 {
230 struct uark_softc *sc = vsc;
231
232 switch (reg) {
233 case UCOM_SET_BREAK:
234 uark_break(sc, portno, onoff);
235 return;
236 case UCOM_SET_DTR:
237 case UCOM_SET_RTS:
238 default:
239 return;
240 }
241 }
242
243 int
244 uark_param(void *vsc, int portno, struct termios *t)
245 {
246 struct uark_softc *sc = (struct uark_softc *)vsc;
247 int data;
248
249 switch (t->c_ospeed) {
250 case 300:
251 case 600:
252 case 1200:
253 case 1800:
254 case 2400:
255 case 4800:
256 case 9600:
257 case 19200:
258 case 38400:
259 case 57600:
260 case 115200:
261 uark_cmd(sc, 3, 0x83);
262 uark_cmd(sc, 0, (UARK_BAUD_REF / t->c_ospeed) & 0xFF);
263 uark_cmd(sc, 1, (UARK_BAUD_REF / t->c_ospeed) >> 8);
264 uark_cmd(sc, 3, 0x03);
265 break;
266 default:
267 return (EINVAL);
268 }
269
270 if (ISSET(t->c_cflag, CSTOPB))
271 data = UARK_STOP_BITS_2;
272 else
273 data = UARK_STOP_BITS_1;
274
275 if (ISSET(t->c_cflag, PARENB)) {
276 if (ISSET(t->c_cflag, PARODD))
277 data |= UARK_PARITY_ODD;
278 else
279 data |= UARK_PARITY_EVEN;
280 } else
281 data |= UARK_PARITY_NONE;
282
283 switch (ISSET(t->c_cflag, CSIZE)) {
284 case CS5:
285 data |= UARK_SET_DATA_BITS(5);
286 break;
287 case CS6:
288 data |= UARK_SET_DATA_BITS(6);
289 break;
290 case CS7:
291 data |= UARK_SET_DATA_BITS(7);
292 break;
293 case CS8:
294 data |= UARK_SET_DATA_BITS(8);
295 break;
296 }
297
298 uark_cmd(sc, 3, 0x00);
299 uark_cmd(sc, 3, data);
300
301 #if 0
302 /* XXX flow control */
303 if (ISSET(t->c_cflag, CRTSCTS))
304 /* rts/cts flow ctl */
305 } else if (ISSET(t->c_iflag, IXON|IXOFF)) {
306 /* xon/xoff flow ctl */
307 } else {
308 /* disable flow ctl */
309 }
310 #endif
311
312 return (0);
313 }
314
315 void
316 uark_get_status(void *vsc, int portno, u_char *lsr, u_char *msr)
317 {
318 struct uark_softc *sc = vsc;
319
320 if (msr != NULL)
321 *msr = sc->sc_msr;
322 if (lsr != NULL)
323 *lsr = sc->sc_lsr;
324 }
325
326 void
327 uark_break(void *vsc, int portno, int onoff)
328 {
329 #if 0
330 struct uark_softc *sc = vsc;
331
332 #ifdef UARK_DEBUG
333 aprint_normal_dev(sc->sc_dev, "break %s!\n", onoff ? "on" : "off");
334 #endif
335
336 if (onoff)
337 /* break on */
338 uark_cmd(sc, 4, 0x01);
339 else
340 uark_cmd(sc, 4, 0x00);
341 #endif
342 }
343
344 int
345 uark_cmd(struct uark_softc *sc, uint16_t index, uint16_t value)
346 {
347 usb_device_request_t req;
348 usbd_status err;
349
350 req.bmRequestType = UARK_WRITE;
351 req.bRequest = UARK_REQUEST;
352 USETW(req.wValue, value);
353 USETW(req.wIndex, index);
354 USETW(req.wLength, 0);
355 err = usbd_do_request(sc->sc_udev, &req, NULL);
356
357 if (err)
358 return (EIO);
359
360 return (0);
361 }
362