2 * Copyright © 2011 Martin Pieuchot <mpi@openbsd.org>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include <sys/types.h>
31 #include <dev/usb/usb.h>
39 unsigned char *cdesc; /* active config descriptor */
40 usb_device_descriptor_t ddesc; /* usb device descriptor */
44 int endpoints[USB_MAX_ENDPOINTS];
50 static int netbsd_get_device_list(struct libusb_context *,
51 struct discovered_devs **);
52 static int netbsd_open(struct libusb_device_handle *);
53 static void netbsd_close(struct libusb_device_handle *);
55 static int netbsd_get_device_descriptor(struct libusb_device *, unsigned char *,
57 static int netbsd_get_active_config_descriptor(struct libusb_device *,
58 unsigned char *, size_t, int *);
59 static int netbsd_get_config_descriptor(struct libusb_device *, uint8_t,
60 unsigned char *, size_t, int *);
62 static int netbsd_get_configuration(struct libusb_device_handle *, int *);
63 static int netbsd_set_configuration(struct libusb_device_handle *, int);
65 static int netbsd_claim_interface(struct libusb_device_handle *, int);
66 static int netbsd_release_interface(struct libusb_device_handle *, int);
68 static int netbsd_set_interface_altsetting(struct libusb_device_handle *, int,
70 static int netbsd_clear_halt(struct libusb_device_handle *, unsigned char);
71 static void netbsd_destroy_device(struct libusb_device *);
73 static int netbsd_submit_transfer(struct usbi_transfer *);
74 static int netbsd_cancel_transfer(struct usbi_transfer *);
75 static int netbsd_handle_transfer_completion(struct usbi_transfer *);
80 static int _errno_to_libusb(int);
81 static int _cache_active_config_descriptor(struct libusb_device *, int);
82 static int _sync_control_transfer(struct usbi_transfer *);
83 static int _sync_gen_transfer(struct usbi_transfer *);
84 static int _access_endpoint(struct libusb_transfer *);
86 const struct usbi_os_backend usbi_backend = {
87 .name = "Synchronous NetBSD backend",
89 .get_device_list = netbsd_get_device_list,
91 .close = netbsd_close,
93 .get_device_descriptor = netbsd_get_device_descriptor,
94 .get_active_config_descriptor = netbsd_get_active_config_descriptor,
95 .get_config_descriptor = netbsd_get_config_descriptor,
97 .get_configuration = netbsd_get_configuration,
98 .set_configuration = netbsd_set_configuration,
100 .claim_interface = netbsd_claim_interface,
101 .release_interface = netbsd_release_interface,
103 .set_interface_altsetting = netbsd_set_interface_altsetting,
104 .clear_halt = netbsd_clear_halt,
106 .destroy_device = netbsd_destroy_device,
108 .submit_transfer = netbsd_submit_transfer,
109 .cancel_transfer = netbsd_cancel_transfer,
111 .handle_transfer_completion = netbsd_handle_transfer_completion,
113 .device_priv_size = sizeof(struct device_priv),
114 .device_handle_priv_size = sizeof(struct handle_priv),
118 netbsd_get_device_list(struct libusb_context * ctx,
119 struct discovered_devs **discdevs)
121 struct libusb_device *dev;
122 struct device_priv *dpriv;
123 struct usb_device_info di;
124 unsigned long session_id;
130 /* Only ugen(4) is supported */
131 for (i = 0; i < USB_MAX_DEVICES; i++) {
132 /* Control endpoint is always .00 */
133 snprintf(devnode, sizeof(devnode), "/dev/ugen%d.00", i);
135 if ((fd = open(devnode, O_RDONLY)) < 0) {
136 if (errno != ENOENT && errno != ENXIO)
137 usbi_err(ctx, "could not open %s", devnode);
141 if (ioctl(fd, USB_GET_DEVICEINFO, &di) < 0)
144 session_id = (di.udi_bus << 8 | di.udi_addr);
145 dev = usbi_get_device_by_session_id(ctx, session_id);
148 dev = usbi_alloc_device(ctx, session_id);
150 return (LIBUSB_ERROR_NO_MEM);
152 dev->bus_number = di.udi_bus;
153 dev->device_address = di.udi_addr;
154 dev->speed = di.udi_speed;
156 dpriv = usbi_get_device_priv(dev);
157 strlcpy(dpriv->devnode, devnode, sizeof(devnode));
160 if (ioctl(fd, USB_GET_DEVICE_DESC, &dpriv->ddesc) < 0) {
166 if (_cache_active_config_descriptor(dev, fd)) {
171 if ((err = usbi_sanitize_device(dev)))
176 if (discovered_devs_append(*discdevs, dev) == NULL)
177 return (LIBUSB_ERROR_NO_MEM);
179 libusb_unref_device(dev);
182 return (LIBUSB_SUCCESS);
186 libusb_unref_device(dev);
187 return _errno_to_libusb(err);
191 netbsd_open(struct libusb_device_handle *handle)
193 struct device_priv *dpriv = usbi_get_device_priv(handle->dev);
194 struct handle_priv *hpriv = usbi_get_device_handle_priv(handle);
197 dpriv->fd = open(dpriv->devnode, O_RDWR);
199 dpriv->fd = open(dpriv->devnode, O_RDONLY);
201 return _errno_to_libusb(errno);
204 for (i = 0; i < USB_MAX_ENDPOINTS; i++)
205 hpriv->endpoints[i] = -1;
207 usbi_dbg("open %s: fd %d", dpriv->devnode, dpriv->fd);
209 return (LIBUSB_SUCCESS);
213 netbsd_close(struct libusb_device_handle *handle)
215 struct device_priv *dpriv = usbi_get_device_priv(handle->dev);
217 usbi_dbg("close: fd %d", dpriv->fd);
224 netbsd_get_device_descriptor(struct libusb_device *dev, unsigned char *buf,
227 struct device_priv *dpriv = usbi_get_device_priv(dev);
231 memcpy(buf, &dpriv->ddesc, DEVICE_DESC_LENGTH);
235 return (LIBUSB_SUCCESS);
239 netbsd_get_active_config_descriptor(struct libusb_device *dev,
240 unsigned char *buf, size_t len, int *host_endian)
242 struct device_priv *dpriv = usbi_get_device_priv(dev);
243 usb_config_descriptor_t *ucd;
245 ucd = (usb_config_descriptor_t *) dpriv->cdesc;
246 len = MIN(len, UGETW(ucd->wTotalLength));
248 usbi_dbg("len %d", len);
250 memcpy(buf, dpriv->cdesc, len);
258 netbsd_get_config_descriptor(struct libusb_device *dev, uint8_t idx,
259 unsigned char *buf, size_t len, int *host_endian)
261 struct device_priv *dpriv = usbi_get_device_priv(dev);
262 struct usb_full_desc ufd;
265 usbi_dbg("index %d, len %d", idx, len);
267 /* A config descriptor may be requested before opening the device */
268 if (dpriv->fd >= 0) {
271 fd = open(dpriv->devnode, O_RDONLY);
273 return _errno_to_libusb(errno);
276 ufd.ufd_config_index = idx;
280 if ((ioctl(fd, USB_GET_FULL_DESC, &ufd)) < 0) {
284 return _errno_to_libusb(err);
296 netbsd_get_configuration(struct libusb_device_handle *handle, int *config)
298 struct device_priv *dpriv = usbi_get_device_priv(handle->dev);
302 if (ioctl(dpriv->fd, USB_GET_CONFIG, config) < 0)
303 return _errno_to_libusb(errno);
305 usbi_dbg("configuration %d", *config);
307 return (LIBUSB_SUCCESS);
311 netbsd_set_configuration(struct libusb_device_handle *handle, int config)
313 struct device_priv *dpriv = usbi_get_device_priv(handle->dev);
315 usbi_dbg("configuration %d", config);
317 if (ioctl(dpriv->fd, USB_SET_CONFIG, &config) < 0)
318 return _errno_to_libusb(errno);
320 return _cache_active_config_descriptor(handle->dev, dpriv->fd);
324 netbsd_claim_interface(struct libusb_device_handle *handle, int iface)
326 struct handle_priv *hpriv = usbi_get_device_handle_priv(handle);
329 for (i = 0; i < USB_MAX_ENDPOINTS; i++)
330 hpriv->endpoints[i] = -1;
332 return (LIBUSB_SUCCESS);
336 netbsd_release_interface(struct libusb_device_handle *handle, int iface)
338 struct handle_priv *hpriv = usbi_get_device_handle_priv(handle);
341 for (i = 0; i < USB_MAX_ENDPOINTS; i++)
342 if (hpriv->endpoints[i] >= 0)
343 close(hpriv->endpoints[i]);
345 return (LIBUSB_SUCCESS);
349 netbsd_set_interface_altsetting(struct libusb_device_handle *handle, int iface,
352 struct device_priv *dpriv = usbi_get_device_priv(handle->dev);
353 struct usb_alt_interface intf;
355 usbi_dbg("iface %d, setting %d", iface, altsetting);
357 memset(&intf, 0, sizeof(intf));
359 intf.uai_interface_index = iface;
360 intf.uai_alt_no = altsetting;
362 if (ioctl(dpriv->fd, USB_SET_ALTINTERFACE, &intf) < 0)
363 return _errno_to_libusb(errno);
365 return (LIBUSB_SUCCESS);
369 netbsd_clear_halt(struct libusb_device_handle *handle, unsigned char endpoint)
371 struct device_priv *dpriv = usbi_get_device_priv(handle->dev);
372 struct usb_ctl_request req;
376 req.ucr_request.bmRequestType = UT_WRITE_ENDPOINT;
377 req.ucr_request.bRequest = UR_CLEAR_FEATURE;
378 USETW(req.ucr_request.wValue, UF_ENDPOINT_HALT);
379 USETW(req.ucr_request.wIndex, endpoint);
380 USETW(req.ucr_request.wLength, 0);
382 if (ioctl(dpriv->fd, USB_DO_REQUEST, &req) < 0)
383 return _errno_to_libusb(errno);
385 return (LIBUSB_SUCCESS);
389 netbsd_destroy_device(struct libusb_device *dev)
391 struct device_priv *dpriv = usbi_get_device_priv(dev);
399 netbsd_submit_transfer(struct usbi_transfer *itransfer)
401 struct libusb_transfer *transfer;
402 struct handle_priv *hpriv;
407 transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
408 hpriv = usbi_get_device_handle_priv(transfer->dev_handle);
410 switch (transfer->type) {
411 case LIBUSB_TRANSFER_TYPE_CONTROL:
412 err = _sync_control_transfer(itransfer);
414 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
415 if (IS_XFEROUT(transfer)) {
416 /* Isochronous write is not supported */
417 err = LIBUSB_ERROR_NOT_SUPPORTED;
420 err = _sync_gen_transfer(itransfer);
422 case LIBUSB_TRANSFER_TYPE_BULK:
423 case LIBUSB_TRANSFER_TYPE_INTERRUPT:
424 if (IS_XFEROUT(transfer) &&
425 transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) {
426 err = LIBUSB_ERROR_NOT_SUPPORTED;
429 err = _sync_gen_transfer(itransfer);
431 case LIBUSB_TRANSFER_TYPE_BULK_STREAM:
432 err = LIBUSB_ERROR_NOT_SUPPORTED;
439 usbi_signal_transfer_completion(itransfer);
441 return (LIBUSB_SUCCESS);
445 netbsd_cancel_transfer(struct usbi_transfer *itransfer)
449 return (LIBUSB_ERROR_NOT_SUPPORTED);
453 netbsd_handle_transfer_completion(struct usbi_transfer *itransfer)
455 return usbi_handle_transfer_completion(itransfer, LIBUSB_TRANSFER_COMPLETED);
459 _errno_to_libusb(int err)
463 return (LIBUSB_ERROR_IO);
465 return (LIBUSB_ERROR_ACCESS);
467 return (LIBUSB_ERROR_NO_DEVICE);
469 return (LIBUSB_ERROR_NO_MEM);
472 return (LIBUSB_ERROR_TIMEOUT);
475 usbi_dbg("error: %s", strerror(err));
477 return (LIBUSB_ERROR_OTHER);
481 _cache_active_config_descriptor(struct libusb_device *dev, int fd)
483 struct device_priv *dpriv = usbi_get_device_priv(dev);
484 struct usb_config_desc ucd;
485 struct usb_full_desc ufd;
489 usbi_dbg("fd %d", fd);
491 ucd.ucd_config_index = USB_CURRENT_CONFIG_INDEX;
493 if ((ioctl(fd, USB_GET_CONFIG_DESC, &ucd)) < 0)
494 return _errno_to_libusb(errno);
496 usbi_dbg("active bLength %d", ucd.ucd_desc.bLength);
498 len = UGETW(ucd.ucd_desc.wTotalLength);
501 return (LIBUSB_ERROR_NO_MEM);
503 ufd.ufd_config_index = ucd.ucd_config_index;
507 usbi_dbg("index %d, len %d", ufd.ufd_config_index, len);
509 if ((ioctl(fd, USB_GET_FULL_DESC, &ufd)) < 0) {
511 return _errno_to_libusb(errno);
522 _sync_control_transfer(struct usbi_transfer *itransfer)
524 struct libusb_transfer *transfer;
525 struct libusb_control_setup *setup;
526 struct device_priv *dpriv;
527 struct usb_ctl_request req;
529 transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
530 dpriv = usbi_get_device_priv(transfer->dev_handle->dev);
531 setup = (struct libusb_control_setup *)transfer->buffer;
533 usbi_dbg("type %d request %d value %d index %d length %d timeout %d",
534 setup->bmRequestType, setup->bRequest,
535 libusb_le16_to_cpu(setup->wValue),
536 libusb_le16_to_cpu(setup->wIndex),
537 libusb_le16_to_cpu(setup->wLength), transfer->timeout);
539 req.ucr_request.bmRequestType = setup->bmRequestType;
540 req.ucr_request.bRequest = setup->bRequest;
541 /* Don't use USETW, libusb already deals with the endianness */
542 (*(uint16_t *)req.ucr_request.wValue) = setup->wValue;
543 (*(uint16_t *)req.ucr_request.wIndex) = setup->wIndex;
544 (*(uint16_t *)req.ucr_request.wLength) = setup->wLength;
545 req.ucr_data = transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE;
547 if ((transfer->flags & LIBUSB_TRANSFER_SHORT_NOT_OK) == 0)
548 req.ucr_flags = USBD_SHORT_XFER_OK;
550 if ((ioctl(dpriv->fd, USB_SET_TIMEOUT, &transfer->timeout)) < 0)
551 return _errno_to_libusb(errno);
553 if ((ioctl(dpriv->fd, USB_DO_REQUEST, &req)) < 0)
554 return _errno_to_libusb(errno);
556 itransfer->transferred = req.ucr_actlen;
558 usbi_dbg("transferred %d", itransfer->transferred);
564 _access_endpoint(struct libusb_transfer *transfer)
566 struct handle_priv *hpriv;
567 struct device_priv *dpriv;
568 char *s, devnode[16];
572 hpriv = usbi_get_device_handle_priv(transfer->dev_handle);
573 dpriv = usbi_get_device_priv(transfer->dev_handle->dev);
575 endpt = UE_GET_ADDR(transfer->endpoint);
576 mode = IS_XFERIN(transfer) ? O_RDONLY : O_WRONLY;
578 usbi_dbg("endpoint %d mode %d", endpt, mode);
580 if (hpriv->endpoints[endpt] < 0) {
581 /* Pick the right node given the control one */
582 strlcpy(devnode, dpriv->devnode, sizeof(devnode));
583 s = strchr(devnode, '.');
584 snprintf(s, 4, ".%02d", endpt);
586 /* We may need to read/write to the same endpoint later. */
587 if (((fd = open(devnode, O_RDWR)) < 0) && (errno == ENXIO))
588 if ((fd = open(devnode, mode)) < 0)
591 hpriv->endpoints[endpt] = fd;
594 return (hpriv->endpoints[endpt]);
598 _sync_gen_transfer(struct usbi_transfer *itransfer)
600 struct libusb_transfer *transfer;
603 transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
606 * Bulk, Interrupt or Isochronous transfer depends on the
607 * endpoint and thus the node to open.
609 if ((fd = _access_endpoint(transfer)) < 0)
610 return _errno_to_libusb(errno);
612 if ((ioctl(fd, USB_SET_TIMEOUT, &transfer->timeout)) < 0)
613 return _errno_to_libusb(errno);
615 if (IS_XFERIN(transfer)) {
616 if ((transfer->flags & LIBUSB_TRANSFER_SHORT_NOT_OK) == 0)
617 if ((ioctl(fd, USB_SET_SHORT_XFER, &nr)) < 0)
618 return _errno_to_libusb(errno);
620 nr = read(fd, transfer->buffer, transfer->length);
622 nr = write(fd, transfer->buffer, transfer->length);
626 return _errno_to_libusb(errno);
628 itransfer->transferred = nr;