1 /* $OpenBSD: uark.c,v 1.1 2006/08/14 08:30:22 jsg Exp $ */
4 * Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org>
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22 * NOTE: all function names beginning like "uark_cfg_" can only
23 * be called from within the config thread function !
27 #include <sys/stdint.h>
28 #include <sys/stddef.h>
29 #include <sys/param.h>
30 #include <sys/queue.h>
31 #include <sys/types.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
35 #include <sys/linker_set.h>
36 #include <sys/module.h>
38 #include <sys/mutex.h>
39 #include <sys/condvar.h>
40 #include <sys/sysctl.h>
42 #include <sys/unistd.h>
43 #include <sys/callout.h>
44 #include <sys/malloc.h>
47 #include <dev/usb/usb.h>
48 #include <dev/usb/usbdi.h>
49 #include <dev/usb/usbdi_util.h>
50 #include <dev/usb/usbhid.h>
53 #define USB_DEBUG_VAR usb_debug
54 #include <dev/usb/usb_debug.h>
55 #include <dev/usb/usb_process.h>
57 #include <dev/usb/serial/usb_serial.h>
59 #define UARK_BUF_SIZE 1024 /* bytes */
61 #define UARK_SET_DATA_BITS(x) ((x) - 5)
63 #define UARK_PARITY_NONE 0x00
64 #define UARK_PARITY_ODD 0x08
65 #define UARK_PARITY_EVEN 0x18
67 #define UARK_STOP_BITS_1 0x00
68 #define UARK_STOP_BITS_2 0x04
70 #define UARK_BAUD_REF 3000000
72 #define UARK_WRITE 0x40
73 #define UARK_READ 0xc0
75 #define UARK_REQUEST 0xfe
77 #define UARK_CONFIG_INDEX 0
78 #define UARK_IFACE_INDEX 0
87 struct ucom_super_softc sc_super_ucom;
88 struct ucom_softc sc_ucom;
90 struct usb_xfer *sc_xfer[UARK_N_TRANSFER];
91 struct usb_device *sc_udev;
100 static device_probe_t uark_probe;
101 static device_attach_t uark_attach;
102 static device_detach_t uark_detach;
104 static usb_callback_t uark_bulk_write_callback;
105 static usb_callback_t uark_bulk_read_callback;
107 static void uark_start_read(struct ucom_softc *);
108 static void uark_stop_read(struct ucom_softc *);
109 static void uark_start_write(struct ucom_softc *);
110 static void uark_stop_write(struct ucom_softc *);
111 static int uark_pre_param(struct ucom_softc *, struct termios *);
112 static void uark_cfg_param(struct ucom_softc *, struct termios *);
113 static void uark_cfg_get_status(struct ucom_softc *, uint8_t *,
115 static void uark_cfg_set_break(struct ucom_softc *, uint8_t);
116 static void uark_cfg_write(struct uark_softc *, uint16_t, uint16_t);
117 static void uark_poll(struct ucom_softc *ucom);
119 static const struct usb_config
120 uark_xfer_config[UARK_N_TRANSFER] = {
122 [UARK_BULK_DT_WR] = {
124 .endpoint = UE_ADDR_ANY,
125 .direction = UE_DIR_OUT,
126 .bufsize = UARK_BUF_SIZE,
127 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
128 .callback = &uark_bulk_write_callback,
131 [UARK_BULK_DT_RD] = {
133 .endpoint = UE_ADDR_ANY,
134 .direction = UE_DIR_IN,
135 .bufsize = UARK_BUF_SIZE,
136 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
137 .callback = &uark_bulk_read_callback,
141 static const struct ucom_callback uark_callback = {
142 .ucom_cfg_get_status = &uark_cfg_get_status,
143 .ucom_cfg_set_break = &uark_cfg_set_break,
144 .ucom_cfg_param = &uark_cfg_param,
145 .ucom_pre_param = &uark_pre_param,
146 .ucom_start_read = &uark_start_read,
147 .ucom_stop_read = &uark_stop_read,
148 .ucom_start_write = &uark_start_write,
149 .ucom_stop_write = &uark_stop_write,
150 .ucom_poll = &uark_poll,
153 static device_method_t uark_methods[] = {
155 DEVMETHOD(device_probe, uark_probe),
156 DEVMETHOD(device_attach, uark_attach),
157 DEVMETHOD(device_detach, uark_detach),
161 static devclass_t uark_devclass;
163 static driver_t uark_driver = {
165 .methods = uark_methods,
166 .size = sizeof(struct uark_softc),
169 DRIVER_MODULE(uark, uhub, uark_driver, uark_devclass, NULL, 0);
170 MODULE_DEPEND(uark, ucom, 1, 1, 1);
171 MODULE_DEPEND(uark, usb, 1, 1, 1);
173 static const struct usb_device_id uark_devs[] = {
174 {USB_VPI(USB_VENDOR_ARKMICRO, USB_PRODUCT_ARKMICRO_ARK3116, 0)},
178 uark_probe(device_t dev)
180 struct usb_attach_arg *uaa = device_get_ivars(dev);
182 if (uaa->usb_mode != USB_MODE_HOST) {
185 if (uaa->info.bConfigIndex != 0) {
188 if (uaa->info.bIfaceIndex != UARK_IFACE_INDEX) {
191 return (usbd_lookup_id_by_uaa(uark_devs, sizeof(uark_devs), uaa));
195 uark_attach(device_t dev)
197 struct usb_attach_arg *uaa = device_get_ivars(dev);
198 struct uark_softc *sc = device_get_softc(dev);
202 device_set_usb_desc(dev);
203 mtx_init(&sc->sc_mtx, "uark", NULL, MTX_DEF);
205 sc->sc_udev = uaa->device;
207 iface_index = UARK_IFACE_INDEX;
208 error = usbd_transfer_setup
209 (uaa->device, &iface_index, sc->sc_xfer,
210 uark_xfer_config, UARK_N_TRANSFER, sc, &sc->sc_mtx);
213 device_printf(dev, "allocating control USB "
214 "transfers failed\n");
217 /* clear stall at first run */
218 mtx_lock(&sc->sc_mtx);
219 usbd_xfer_set_stall(sc->sc_xfer[UARK_BULK_DT_WR]);
220 usbd_xfer_set_stall(sc->sc_xfer[UARK_BULK_DT_RD]);
221 mtx_unlock(&sc->sc_mtx);
223 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
224 &uark_callback, &sc->sc_mtx);
226 DPRINTF("ucom_attach failed\n");
229 return (0); /* success */
233 return (ENXIO); /* failure */
237 uark_detach(device_t dev)
239 struct uark_softc *sc = device_get_softc(dev);
241 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1);
242 usbd_transfer_unsetup(sc->sc_xfer, UARK_N_TRANSFER);
243 mtx_destroy(&sc->sc_mtx);
249 uark_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
251 struct uark_softc *sc = usbd_xfer_softc(xfer);
252 struct usb_page_cache *pc;
255 switch (USB_GET_STATE(xfer)) {
257 case USB_ST_TRANSFERRED:
259 pc = usbd_xfer_get_frame(xfer, 0);
260 if (ucom_get_data(&sc->sc_ucom, pc, 0,
261 UARK_BUF_SIZE, &actlen)) {
262 usbd_xfer_set_frame_len(xfer, 0, actlen);
263 usbd_transfer_submit(xfer);
268 if (error != USB_ERR_CANCELLED) {
269 /* try to clear stall first */
270 usbd_xfer_set_stall(xfer);
279 uark_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
281 struct uark_softc *sc = usbd_xfer_softc(xfer);
282 struct usb_page_cache *pc;
285 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
287 switch (USB_GET_STATE(xfer)) {
288 case USB_ST_TRANSFERRED:
289 pc = usbd_xfer_get_frame(xfer, 0);
290 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
294 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
295 usbd_transfer_submit(xfer);
299 if (error != USB_ERR_CANCELLED) {
300 /* try to clear stall first */
301 usbd_xfer_set_stall(xfer);
309 uark_start_read(struct ucom_softc *ucom)
311 struct uark_softc *sc = ucom->sc_parent;
313 usbd_transfer_start(sc->sc_xfer[UARK_BULK_DT_RD]);
317 uark_stop_read(struct ucom_softc *ucom)
319 struct uark_softc *sc = ucom->sc_parent;
321 usbd_transfer_stop(sc->sc_xfer[UARK_BULK_DT_RD]);
325 uark_start_write(struct ucom_softc *ucom)
327 struct uark_softc *sc = ucom->sc_parent;
329 usbd_transfer_start(sc->sc_xfer[UARK_BULK_DT_WR]);
333 uark_stop_write(struct ucom_softc *ucom)
335 struct uark_softc *sc = ucom->sc_parent;
337 usbd_transfer_stop(sc->sc_xfer[UARK_BULK_DT_WR]);
341 uark_pre_param(struct ucom_softc *ucom, struct termios *t)
343 if ((t->c_ospeed < 300) || (t->c_ospeed > 115200))
349 uark_cfg_param(struct ucom_softc *ucom, struct termios *t)
351 struct uark_softc *sc = ucom->sc_parent;
352 uint32_t speed = t->c_ospeed;
356 * NOTE: When reverse computing the baud rate from the "data" all
357 * allowed baud rates are within 3% of the initial baud rate.
359 data = (UARK_BAUD_REF + (speed / 2)) / speed;
361 uark_cfg_write(sc, 3, 0x83);
362 uark_cfg_write(sc, 0, data & 0xFF);
363 uark_cfg_write(sc, 1, data >> 8);
364 uark_cfg_write(sc, 3, 0x03);
366 if (t->c_cflag & CSTOPB)
367 data = UARK_STOP_BITS_2;
369 data = UARK_STOP_BITS_1;
371 if (t->c_cflag & PARENB) {
372 if (t->c_cflag & PARODD)
373 data |= UARK_PARITY_ODD;
375 data |= UARK_PARITY_EVEN;
377 data |= UARK_PARITY_NONE;
379 switch (t->c_cflag & CSIZE) {
381 data |= UARK_SET_DATA_BITS(5);
384 data |= UARK_SET_DATA_BITS(6);
387 data |= UARK_SET_DATA_BITS(7);
391 data |= UARK_SET_DATA_BITS(8);
394 uark_cfg_write(sc, 3, 0x00);
395 uark_cfg_write(sc, 3, data);
399 uark_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
401 struct uark_softc *sc = ucom->sc_parent;
408 uark_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
410 struct uark_softc *sc = ucom->sc_parent;
412 DPRINTF("onoff=%d\n", onoff);
414 uark_cfg_write(sc, 4, onoff ? 0x01 : 0x00);
418 uark_cfg_write(struct uark_softc *sc, uint16_t index, uint16_t value)
420 struct usb_device_request req;
423 req.bmRequestType = UARK_WRITE;
424 req.bRequest = UARK_REQUEST;
425 USETW(req.wValue, value);
426 USETW(req.wIndex, index);
427 USETW(req.wLength, 0);
429 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
430 &req, NULL, 0, 1000);
432 DPRINTFN(0, "device request failed, err=%s "
433 "(ignored)\n", usbd_errstr(err));
438 uark_poll(struct ucom_softc *ucom)
440 struct uark_softc *sc = ucom->sc_parent;
441 usbd_transfer_poll(sc->sc_xfer, UARK_N_TRANSFER);