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c3322cb91c
via if_var.h. Sponsored by: Netflix Sponsored by: Nginx, Inc.
546 lines
13 KiB
C
546 lines
13 KiB
C
/*-
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* Copyright (c) 2010 Hans Petter Selasky. All rights reserved.
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* Copyright (c) 2009 Diego Giagio. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Thanks to Diego Giagio for figuring out the programming details for
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* the Apple iPhone Ethernet driver.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/stdint.h>
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#include <sys/stddef.h>
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/condvar.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/sx.h>
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#include <sys/unistd.h>
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#include <sys/callout.h>
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#include <sys/malloc.h>
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#include <sys/priv.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usbdi_util.h>
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#include "usbdevs.h"
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#define USB_DEBUG_VAR ipheth_debug
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#include <dev/usb/usb_debug.h>
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#include <dev/usb/usb_process.h>
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#include <dev/usb/net/usb_ethernet.h>
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#include <dev/usb/net/if_iphethvar.h>
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static device_probe_t ipheth_probe;
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static device_attach_t ipheth_attach;
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static device_detach_t ipheth_detach;
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static usb_callback_t ipheth_bulk_write_callback;
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static usb_callback_t ipheth_bulk_read_callback;
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static uether_fn_t ipheth_attach_post;
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static uether_fn_t ipheth_tick;
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static uether_fn_t ipheth_init;
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static uether_fn_t ipheth_stop;
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static uether_fn_t ipheth_start;
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static uether_fn_t ipheth_setmulti;
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static uether_fn_t ipheth_setpromisc;
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#ifdef USB_DEBUG
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static int ipheth_debug = 0;
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static SYSCTL_NODE(_hw_usb, OID_AUTO, ipheth, CTLFLAG_RW, 0, "USB iPhone ethernet");
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SYSCTL_INT(_hw_usb_ipheth, OID_AUTO, debug, CTLFLAG_RW, &ipheth_debug, 0, "Debug level");
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#endif
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static const struct usb_config ipheth_config[IPHETH_N_TRANSFER] = {
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[IPHETH_BULK_RX] = {
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.type = UE_BULK,
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.endpoint = UE_ADDR_ANY,
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.direction = UE_DIR_RX,
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.frames = IPHETH_RX_FRAMES_MAX,
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.bufsize = (IPHETH_RX_FRAMES_MAX * MCLBYTES),
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.flags = {.short_frames_ok = 1,.short_xfer_ok = 1,.ext_buffer = 1,},
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.callback = ipheth_bulk_read_callback,
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.timeout = 0, /* no timeout */
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},
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[IPHETH_BULK_TX] = {
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.type = UE_BULK,
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.endpoint = UE_ADDR_ANY,
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.direction = UE_DIR_TX,
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.frames = IPHETH_TX_FRAMES_MAX,
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.bufsize = (IPHETH_TX_FRAMES_MAX * IPHETH_BUF_SIZE),
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.flags = {.force_short_xfer = 1,},
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.callback = ipheth_bulk_write_callback,
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.timeout = IPHETH_TX_TIMEOUT,
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},
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};
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static device_method_t ipheth_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, ipheth_probe),
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DEVMETHOD(device_attach, ipheth_attach),
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DEVMETHOD(device_detach, ipheth_detach),
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DEVMETHOD_END
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};
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static driver_t ipheth_driver = {
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.name = "ipheth",
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.methods = ipheth_methods,
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.size = sizeof(struct ipheth_softc),
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};
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static devclass_t ipheth_devclass;
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DRIVER_MODULE(ipheth, uhub, ipheth_driver, ipheth_devclass, NULL, 0);
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MODULE_VERSION(ipheth, 1);
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MODULE_DEPEND(ipheth, uether, 1, 1, 1);
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MODULE_DEPEND(ipheth, usb, 1, 1, 1);
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MODULE_DEPEND(ipheth, ether, 1, 1, 1);
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static const struct usb_ether_methods ipheth_ue_methods = {
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.ue_attach_post = ipheth_attach_post,
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.ue_start = ipheth_start,
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.ue_init = ipheth_init,
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.ue_tick = ipheth_tick,
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.ue_stop = ipheth_stop,
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.ue_setmulti = ipheth_setmulti,
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.ue_setpromisc = ipheth_setpromisc,
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};
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#define IPHETH_ID(v,p,c,sc,pt) \
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USB_VENDOR(v), USB_PRODUCT(p), \
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USB_IFACE_CLASS(c), USB_IFACE_SUBCLASS(sc), \
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USB_IFACE_PROTOCOL(pt)
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static const STRUCT_USB_HOST_ID ipheth_devs[] = {
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#if 0
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{IPHETH_ID(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE,
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IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
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IPHETH_USBINTF_PROTO)},
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{IPHETH_ID(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE_3G,
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IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
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IPHETH_USBINTF_PROTO)},
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{IPHETH_ID(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE_3GS,
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IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
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IPHETH_USBINTF_PROTO)},
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{IPHETH_ID(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE_4,
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IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
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IPHETH_USBINTF_PROTO)},
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{IPHETH_ID(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE_4S,
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IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
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IPHETH_USBINTF_PROTO)},
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{IPHETH_ID(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE_5,
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IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
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IPHETH_USBINTF_PROTO)},
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#else
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/* product agnostic interface match */
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{USB_VENDOR(USB_VENDOR_APPLE),
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USB_IFACE_CLASS(IPHETH_USBINTF_CLASS),
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USB_IFACE_SUBCLASS(IPHETH_USBINTF_SUBCLASS),
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USB_IFACE_PROTOCOL(IPHETH_USBINTF_PROTO)},
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#endif
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};
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static int
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ipheth_get_mac_addr(struct ipheth_softc *sc)
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{
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struct usb_device_request req;
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int error;
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req.bmRequestType = UT_READ_VENDOR_DEVICE;
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req.bRequest = IPHETH_CMD_GET_MACADDR;
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req.wValue[0] = 0;
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req.wValue[1] = 0;
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req.wIndex[0] = sc->sc_iface_no;
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req.wIndex[1] = 0;
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req.wLength[0] = ETHER_ADDR_LEN;
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req.wLength[1] = 0;
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error = usbd_do_request(sc->sc_ue.ue_udev, NULL, &req, sc->sc_data);
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if (error)
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return (error);
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memcpy(sc->sc_ue.ue_eaddr, sc->sc_data, ETHER_ADDR_LEN);
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return (0);
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}
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static int
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ipheth_probe(device_t dev)
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{
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struct usb_attach_arg *uaa = device_get_ivars(dev);
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if (uaa->usb_mode != USB_MODE_HOST)
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return (ENXIO);
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return (usbd_lookup_id_by_uaa(ipheth_devs, sizeof(ipheth_devs), uaa));
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}
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static int
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ipheth_attach(device_t dev)
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{
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struct ipheth_softc *sc = device_get_softc(dev);
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struct usb_ether *ue = &sc->sc_ue;
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struct usb_attach_arg *uaa = device_get_ivars(dev);
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int error;
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sc->sc_iface_no = uaa->info.bIfaceIndex;
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device_set_usb_desc(dev);
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mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
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error = usbd_set_alt_interface_index(uaa->device,
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uaa->info.bIfaceIndex, IPHETH_ALT_INTFNUM);
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if (error) {
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device_printf(dev, "Cannot set alternate setting\n");
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goto detach;
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}
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error = usbd_transfer_setup(uaa->device, &sc->sc_iface_no,
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sc->sc_xfer, ipheth_config, IPHETH_N_TRANSFER, sc, &sc->sc_mtx);
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if (error) {
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device_printf(dev, "Cannot setup USB transfers\n");
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goto detach;
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}
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ue->ue_sc = sc;
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ue->ue_dev = dev;
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ue->ue_udev = uaa->device;
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ue->ue_mtx = &sc->sc_mtx;
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ue->ue_methods = &ipheth_ue_methods;
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error = ipheth_get_mac_addr(sc);
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if (error) {
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device_printf(dev, "Cannot get MAC address\n");
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goto detach;
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}
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error = uether_ifattach(ue);
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if (error) {
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device_printf(dev, "could not attach interface\n");
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goto detach;
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}
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return (0); /* success */
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detach:
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ipheth_detach(dev);
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return (ENXIO); /* failure */
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}
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static int
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ipheth_detach(device_t dev)
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{
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struct ipheth_softc *sc = device_get_softc(dev);
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struct usb_ether *ue = &sc->sc_ue;
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/* stop all USB transfers first */
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usbd_transfer_unsetup(sc->sc_xfer, IPHETH_N_TRANSFER);
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uether_ifdetach(ue);
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mtx_destroy(&sc->sc_mtx);
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return (0);
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}
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static void
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ipheth_start(struct usb_ether *ue)
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{
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struct ipheth_softc *sc = uether_getsc(ue);
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/*
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* Start the USB transfers, if not already started:
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*/
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usbd_transfer_start(sc->sc_xfer[IPHETH_BULK_TX]);
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usbd_transfer_start(sc->sc_xfer[IPHETH_BULK_RX]);
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}
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static void
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ipheth_stop(struct usb_ether *ue)
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{
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struct ipheth_softc *sc = uether_getsc(ue);
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/*
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* Stop the USB transfers, if not already stopped:
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*/
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usbd_transfer_stop(sc->sc_xfer[IPHETH_BULK_TX]);
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usbd_transfer_stop(sc->sc_xfer[IPHETH_BULK_RX]);
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}
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static void
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ipheth_tick(struct usb_ether *ue)
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{
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struct ipheth_softc *sc = uether_getsc(ue);
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struct usb_device_request req;
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int error;
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req.bmRequestType = UT_READ_VENDOR_DEVICE;
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req.bRequest = IPHETH_CMD_CARRIER_CHECK;
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req.wValue[0] = 0;
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req.wValue[1] = 0;
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req.wIndex[0] = sc->sc_iface_no;
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req.wIndex[1] = 0;
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req.wLength[0] = IPHETH_CTRL_BUF_SIZE;
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req.wLength[1] = 0;
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error = uether_do_request(ue, &req, sc->sc_data, IPHETH_CTRL_TIMEOUT);
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if (error)
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return;
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sc->sc_carrier_on =
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(sc->sc_data[0] == IPHETH_CARRIER_ON);
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}
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static void
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ipheth_attach_post(struct usb_ether *ue)
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{
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}
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static void
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ipheth_init(struct usb_ether *ue)
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{
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struct ipheth_softc *sc = uether_getsc(ue);
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struct ifnet *ifp = uether_getifp(ue);
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IPHETH_LOCK_ASSERT(sc, MA_OWNED);
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ifp->if_drv_flags |= IFF_DRV_RUNNING;
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/* stall data write direction, which depends on USB mode */
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usbd_xfer_set_stall(sc->sc_xfer[IPHETH_BULK_TX]);
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/* start data transfers */
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ipheth_start(ue);
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}
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static void
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ipheth_setmulti(struct usb_ether *ue)
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{
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}
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static void
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ipheth_setpromisc(struct usb_ether *ue)
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{
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}
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static void
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ipheth_free_queue(struct mbuf **ppm, uint8_t n)
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{
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uint8_t x;
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for (x = 0; x != n; x++) {
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if (ppm[x] != NULL) {
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m_freem(ppm[x]);
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ppm[x] = NULL;
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}
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}
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}
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static void
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ipheth_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
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{
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struct ipheth_softc *sc = usbd_xfer_softc(xfer);
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struct ifnet *ifp = uether_getifp(&sc->sc_ue);
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struct usb_page_cache *pc;
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struct mbuf *m;
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uint8_t x;
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int actlen;
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int aframes;
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usbd_xfer_status(xfer, &actlen, NULL, &aframes, NULL);
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DPRINTFN(1, "\n");
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switch (USB_GET_STATE(xfer)) {
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case USB_ST_TRANSFERRED:
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DPRINTFN(11, "transfer complete: %u bytes in %u frames\n",
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actlen, aframes);
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ifp->if_opackets++;
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/* free all previous TX buffers */
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ipheth_free_queue(sc->sc_tx_buf, IPHETH_TX_FRAMES_MAX);
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/* FALLTHROUGH */
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case USB_ST_SETUP:
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tr_setup:
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for (x = 0; x != IPHETH_TX_FRAMES_MAX; x++) {
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IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
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if (m == NULL)
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break;
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usbd_xfer_set_frame_offset(xfer,
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x * IPHETH_BUF_SIZE, x);
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pc = usbd_xfer_get_frame(xfer, x);
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sc->sc_tx_buf[x] = m;
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if (m->m_pkthdr.len > IPHETH_BUF_SIZE)
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m->m_pkthdr.len = IPHETH_BUF_SIZE;
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usbd_m_copy_in(pc, 0, m, 0, m->m_pkthdr.len);
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usbd_xfer_set_frame_len(xfer, x, IPHETH_BUF_SIZE);
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if (IPHETH_BUF_SIZE != m->m_pkthdr.len) {
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usbd_frame_zero(pc, m->m_pkthdr.len,
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IPHETH_BUF_SIZE - m->m_pkthdr.len);
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}
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/*
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* If there's a BPF listener, bounce a copy of
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* this frame to him:
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*/
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BPF_MTAP(ifp, m);
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}
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if (x != 0) {
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usbd_xfer_set_frames(xfer, x);
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usbd_transfer_submit(xfer);
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}
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break;
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default: /* Error */
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DPRINTFN(11, "transfer error, %s\n",
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usbd_errstr(error));
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/* free all previous TX buffers */
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ipheth_free_queue(sc->sc_tx_buf, IPHETH_TX_FRAMES_MAX);
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/* count output errors */
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ifp->if_oerrors++;
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if (error != USB_ERR_CANCELLED) {
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/* try to clear stall first */
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usbd_xfer_set_stall(xfer);
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goto tr_setup;
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}
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break;
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}
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}
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static void
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ipheth_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
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{
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struct ipheth_softc *sc = usbd_xfer_softc(xfer);
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struct mbuf *m;
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uint8_t x;
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int actlen;
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int aframes;
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int len;
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usbd_xfer_status(xfer, &actlen, NULL, &aframes, NULL);
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switch (USB_GET_STATE(xfer)) {
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case USB_ST_TRANSFERRED:
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DPRINTF("received %u bytes in %u frames\n", actlen, aframes);
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for (x = 0; x != aframes; x++) {
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m = sc->sc_rx_buf[x];
|
|
sc->sc_rx_buf[x] = NULL;
|
|
len = usbd_xfer_frame_len(xfer, x);
|
|
|
|
if (len < (int)(sizeof(struct ether_header) +
|
|
IPHETH_RX_ADJ)) {
|
|
m_freem(m);
|
|
continue;
|
|
}
|
|
|
|
m_adj(m, IPHETH_RX_ADJ);
|
|
|
|
/* queue up mbuf */
|
|
uether_rxmbuf(&sc->sc_ue, m, len - IPHETH_RX_ADJ);
|
|
}
|
|
|
|
/* FALLTHROUGH */
|
|
case USB_ST_SETUP:
|
|
|
|
for (x = 0; x != IPHETH_RX_FRAMES_MAX; x++) {
|
|
if (sc->sc_rx_buf[x] == NULL) {
|
|
m = uether_newbuf();
|
|
if (m == NULL)
|
|
goto tr_stall;
|
|
|
|
/* cancel alignment for ethernet */
|
|
m_adj(m, ETHER_ALIGN);
|
|
|
|
sc->sc_rx_buf[x] = m;
|
|
} else {
|
|
m = sc->sc_rx_buf[x];
|
|
}
|
|
|
|
usbd_xfer_set_frame_data(xfer, x, m->m_data, m->m_len);
|
|
}
|
|
/* set number of frames and start hardware */
|
|
usbd_xfer_set_frames(xfer, x);
|
|
usbd_transfer_submit(xfer);
|
|
/* flush any received frames */
|
|
uether_rxflush(&sc->sc_ue);
|
|
break;
|
|
|
|
default: /* Error */
|
|
DPRINTF("error = %s\n", usbd_errstr(error));
|
|
|
|
if (error != USB_ERR_CANCELLED) {
|
|
tr_stall:
|
|
/* try to clear stall first */
|
|
usbd_xfer_set_stall(xfer);
|
|
usbd_xfer_set_frames(xfer, 0);
|
|
usbd_transfer_submit(xfer);
|
|
break;
|
|
}
|
|
/* need to free the RX-mbufs when we are cancelled */
|
|
ipheth_free_queue(sc->sc_rx_buf, IPHETH_RX_FRAMES_MAX);
|
|
break;
|
|
}
|
|
}
|