2 * Copyright (c) 2010 Hans Petter Selasky. All rights reserved.
3 * Copyright (c) 2009 Diego Giagio. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * Thanks to Diego Giagio for figuring out the programming details for
29 * the Apple iPhone Ethernet driver.
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/stdint.h>
36 #include <sys/stddef.h>
37 #include <sys/param.h>
38 #include <sys/queue.h>
39 #include <sys/types.h>
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
43 #include <sys/module.h>
45 #include <sys/mutex.h>
46 #include <sys/condvar.h>
47 #include <sys/sysctl.h>
49 #include <sys/unistd.h>
50 #include <sys/callout.h>
51 #include <sys/malloc.h>
54 #include <dev/usb/usb.h>
55 #include <dev/usb/usbdi.h>
56 #include <dev/usb/usbdi_util.h>
59 #define USB_DEBUG_VAR ipheth_debug
60 #include <dev/usb/usb_debug.h>
61 #include <dev/usb/usb_process.h>
63 #include <dev/usb/net/usb_ethernet.h>
64 #include <dev/usb/net/if_iphethvar.h>
66 static device_probe_t ipheth_probe;
67 static device_attach_t ipheth_attach;
68 static device_detach_t ipheth_detach;
70 static usb_callback_t ipheth_bulk_write_callback;
71 static usb_callback_t ipheth_bulk_read_callback;
73 static uether_fn_t ipheth_attach_post;
74 static uether_fn_t ipheth_tick;
75 static uether_fn_t ipheth_init;
76 static uether_fn_t ipheth_stop;
77 static uether_fn_t ipheth_start;
78 static uether_fn_t ipheth_setmulti;
79 static uether_fn_t ipheth_setpromisc;
82 static int ipheth_debug = 0;
84 static SYSCTL_NODE(_hw_usb, OID_AUTO, ipheth, CTLFLAG_RW, 0, "USB iPhone ethernet");
85 SYSCTL_INT(_hw_usb_ipheth, OID_AUTO, debug, CTLFLAG_RW, &ipheth_debug, 0, "Debug level");
88 static const struct usb_config ipheth_config[IPHETH_N_TRANSFER] = {
92 .endpoint = UE_ADDR_ANY,
93 .direction = UE_DIR_RX,
94 .frames = IPHETH_RX_FRAMES_MAX,
95 .bufsize = (IPHETH_RX_FRAMES_MAX * MCLBYTES),
96 .flags = {.short_frames_ok = 1,.short_xfer_ok = 1,.ext_buffer = 1,},
97 .callback = ipheth_bulk_read_callback,
98 .timeout = 0, /* no timeout */
103 .endpoint = UE_ADDR_ANY,
104 .direction = UE_DIR_TX,
105 .frames = IPHETH_TX_FRAMES_MAX,
106 .bufsize = (IPHETH_TX_FRAMES_MAX * IPHETH_BUF_SIZE),
107 .flags = {.force_short_xfer = 1,},
108 .callback = ipheth_bulk_write_callback,
109 .timeout = IPHETH_TX_TIMEOUT,
113 static device_method_t ipheth_methods[] = {
114 /* Device interface */
115 DEVMETHOD(device_probe, ipheth_probe),
116 DEVMETHOD(device_attach, ipheth_attach),
117 DEVMETHOD(device_detach, ipheth_detach),
122 static driver_t ipheth_driver = {
124 .methods = ipheth_methods,
125 .size = sizeof(struct ipheth_softc),
128 static devclass_t ipheth_devclass;
130 DRIVER_MODULE(ipheth, uhub, ipheth_driver, ipheth_devclass, NULL, 0);
131 MODULE_VERSION(ipheth, 1);
132 MODULE_DEPEND(ipheth, uether, 1, 1, 1);
133 MODULE_DEPEND(ipheth, usb, 1, 1, 1);
134 MODULE_DEPEND(ipheth, ether, 1, 1, 1);
136 static const struct usb_ether_methods ipheth_ue_methods = {
137 .ue_attach_post = ipheth_attach_post,
138 .ue_start = ipheth_start,
139 .ue_init = ipheth_init,
140 .ue_tick = ipheth_tick,
141 .ue_stop = ipheth_stop,
142 .ue_setmulti = ipheth_setmulti,
143 .ue_setpromisc = ipheth_setpromisc,
146 #define IPHETH_ID(v,p,c,sc,pt) \
147 USB_VENDOR(v), USB_PRODUCT(p), \
148 USB_IFACE_CLASS(c), USB_IFACE_SUBCLASS(sc), \
149 USB_IFACE_PROTOCOL(pt)
151 static const STRUCT_USB_HOST_ID ipheth_devs[] = {
152 {IPHETH_ID(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE,
153 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
154 IPHETH_USBINTF_PROTO)},
155 {IPHETH_ID(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE_3G,
156 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
157 IPHETH_USBINTF_PROTO)},
158 {IPHETH_ID(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE_3GS,
159 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
160 IPHETH_USBINTF_PROTO)},
161 {IPHETH_ID(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE_4,
162 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
163 IPHETH_USBINTF_PROTO)},
164 {IPHETH_ID(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE_4S,
165 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
166 IPHETH_USBINTF_PROTO)},
167 {IPHETH_ID(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE_5,
168 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
169 IPHETH_USBINTF_PROTO)},
173 ipheth_get_mac_addr(struct ipheth_softc *sc)
175 struct usb_device_request req;
178 req.bmRequestType = UT_READ_VENDOR_DEVICE;
179 req.bRequest = IPHETH_CMD_GET_MACADDR;
182 req.wIndex[0] = sc->sc_iface_no;
184 req.wLength[0] = ETHER_ADDR_LEN;
187 error = usbd_do_request(sc->sc_ue.ue_udev, NULL, &req, sc->sc_data);
192 memcpy(sc->sc_ue.ue_eaddr, sc->sc_data, ETHER_ADDR_LEN);
198 ipheth_probe(device_t dev)
200 struct usb_attach_arg *uaa = device_get_ivars(dev);
202 if (uaa->usb_mode != USB_MODE_HOST)
205 return (usbd_lookup_id_by_uaa(ipheth_devs, sizeof(ipheth_devs), uaa));
209 ipheth_attach(device_t dev)
211 struct ipheth_softc *sc = device_get_softc(dev);
212 struct usb_ether *ue = &sc->sc_ue;
213 struct usb_attach_arg *uaa = device_get_ivars(dev);
216 sc->sc_iface_no = uaa->info.bIfaceIndex;
218 device_set_usb_desc(dev);
220 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
222 error = usbd_set_alt_interface_index(uaa->device,
223 uaa->info.bIfaceIndex, IPHETH_ALT_INTFNUM);
225 device_printf(dev, "Cannot set alternate setting\n");
228 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_no,
229 sc->sc_xfer, ipheth_config, IPHETH_N_TRANSFER, sc, &sc->sc_mtx);
231 device_printf(dev, "Cannot setup USB transfers\n");
236 ue->ue_udev = uaa->device;
237 ue->ue_mtx = &sc->sc_mtx;
238 ue->ue_methods = &ipheth_ue_methods;
240 error = ipheth_get_mac_addr(sc);
242 device_printf(dev, "Cannot get MAC address\n");
246 error = uether_ifattach(ue);
248 device_printf(dev, "could not attach interface\n");
251 return (0); /* success */
255 return (ENXIO); /* failure */
259 ipheth_detach(device_t dev)
261 struct ipheth_softc *sc = device_get_softc(dev);
262 struct usb_ether *ue = &sc->sc_ue;
264 /* stop all USB transfers first */
265 usbd_transfer_unsetup(sc->sc_xfer, IPHETH_N_TRANSFER);
269 mtx_destroy(&sc->sc_mtx);
275 ipheth_start(struct usb_ether *ue)
277 struct ipheth_softc *sc = uether_getsc(ue);
280 * Start the USB transfers, if not already started:
282 usbd_transfer_start(sc->sc_xfer[IPHETH_BULK_TX]);
283 usbd_transfer_start(sc->sc_xfer[IPHETH_BULK_RX]);
287 ipheth_stop(struct usb_ether *ue)
289 struct ipheth_softc *sc = uether_getsc(ue);
292 * Stop the USB transfers, if not already stopped:
294 usbd_transfer_stop(sc->sc_xfer[IPHETH_BULK_TX]);
295 usbd_transfer_stop(sc->sc_xfer[IPHETH_BULK_RX]);
299 ipheth_tick(struct usb_ether *ue)
301 struct ipheth_softc *sc = uether_getsc(ue);
302 struct usb_device_request req;
305 req.bmRequestType = UT_READ_VENDOR_DEVICE;
306 req.bRequest = IPHETH_CMD_CARRIER_CHECK;
309 req.wIndex[0] = sc->sc_iface_no;
311 req.wLength[0] = IPHETH_CTRL_BUF_SIZE;
314 error = uether_do_request(ue, &req, sc->sc_data, IPHETH_CTRL_TIMEOUT);
320 (sc->sc_data[0] == IPHETH_CARRIER_ON);
324 ipheth_attach_post(struct usb_ether *ue)
330 ipheth_init(struct usb_ether *ue)
332 struct ipheth_softc *sc = uether_getsc(ue);
333 struct ifnet *ifp = uether_getifp(ue);
335 IPHETH_LOCK_ASSERT(sc, MA_OWNED);
337 ifp->if_drv_flags |= IFF_DRV_RUNNING;
339 /* stall data write direction, which depends on USB mode */
340 usbd_xfer_set_stall(sc->sc_xfer[IPHETH_BULK_TX]);
342 /* start data transfers */
347 ipheth_setmulti(struct usb_ether *ue)
353 ipheth_setpromisc(struct usb_ether *ue)
359 ipheth_free_queue(struct mbuf **ppm, uint8_t n)
363 for (x = 0; x != n; x++) {
364 if (ppm[x] != NULL) {
372 ipheth_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
374 struct ipheth_softc *sc = usbd_xfer_softc(xfer);
375 struct ifnet *ifp = uether_getifp(&sc->sc_ue);
376 struct usb_page_cache *pc;
382 usbd_xfer_status(xfer, &actlen, NULL, &aframes, NULL);
386 switch (USB_GET_STATE(xfer)) {
387 case USB_ST_TRANSFERRED:
388 DPRINTFN(11, "transfer complete: %u bytes in %u frames\n",
393 /* free all previous TX buffers */
394 ipheth_free_queue(sc->sc_tx_buf, IPHETH_TX_FRAMES_MAX);
399 for (x = 0; x != IPHETH_TX_FRAMES_MAX; x++) {
401 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
406 usbd_xfer_set_frame_offset(xfer,
407 x * IPHETH_BUF_SIZE, x);
409 pc = usbd_xfer_get_frame(xfer, x);
411 sc->sc_tx_buf[x] = m;
413 if (m->m_pkthdr.len > IPHETH_BUF_SIZE)
414 m->m_pkthdr.len = IPHETH_BUF_SIZE;
416 usbd_m_copy_in(pc, 0, m, 0, m->m_pkthdr.len);
418 usbd_xfer_set_frame_len(xfer, x, IPHETH_BUF_SIZE);
420 if (IPHETH_BUF_SIZE != m->m_pkthdr.len) {
421 usbd_frame_zero(pc, m->m_pkthdr.len,
422 IPHETH_BUF_SIZE - m->m_pkthdr.len);
426 * If there's a BPF listener, bounce a copy of
432 usbd_xfer_set_frames(xfer, x);
434 usbd_transfer_submit(xfer);
439 DPRINTFN(11, "transfer error, %s\n",
442 /* free all previous TX buffers */
443 ipheth_free_queue(sc->sc_tx_buf, IPHETH_TX_FRAMES_MAX);
445 /* count output errors */
448 if (error != USB_ERR_CANCELLED) {
449 /* try to clear stall first */
450 usbd_xfer_set_stall(xfer);
458 ipheth_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
460 struct ipheth_softc *sc = usbd_xfer_softc(xfer);
467 usbd_xfer_status(xfer, &actlen, NULL, &aframes, NULL);
469 switch (USB_GET_STATE(xfer)) {
470 case USB_ST_TRANSFERRED:
472 DPRINTF("received %u bytes in %u frames\n", actlen, aframes);
474 for (x = 0; x != aframes; x++) {
476 m = sc->sc_rx_buf[x];
477 sc->sc_rx_buf[x] = NULL;
478 len = usbd_xfer_frame_len(xfer, x);
480 if (len < (int)(sizeof(struct ether_header) +
486 m_adj(m, IPHETH_RX_ADJ);
489 uether_rxmbuf(&sc->sc_ue, m, len - IPHETH_RX_ADJ);
495 for (x = 0; x != IPHETH_RX_FRAMES_MAX; x++) {
496 if (sc->sc_rx_buf[x] == NULL) {
501 /* cancel alignment for ethernet */
502 m_adj(m, ETHER_ALIGN);
504 sc->sc_rx_buf[x] = m;
506 m = sc->sc_rx_buf[x];
509 usbd_xfer_set_frame_data(xfer, x, m->m_data, m->m_len);
511 /* set number of frames and start hardware */
512 usbd_xfer_set_frames(xfer, x);
513 usbd_transfer_submit(xfer);
514 /* flush any received frames */
515 uether_rxflush(&sc->sc_ue);
519 DPRINTF("error = %s\n", usbd_errstr(error));
521 if (error != USB_ERR_CANCELLED) {
523 /* try to clear stall first */
524 usbd_xfer_set_stall(xfer);
525 usbd_xfer_set_frames(xfer, 0);
526 usbd_transfer_submit(xfer);
529 /* need to free the RX-mbufs when we are cancelled */
530 ipheth_free_queue(sc->sc_rx_buf, IPHETH_RX_FRAMES_MAX);