#include <machine/rtems-bsd-kernel-space.h>
/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright (c) 1997, 1998, 1999, 2000
* Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Kawasaki LSI KL5KUSB101B USB to ethernet adapter driver.
*
* Written by Bill Paul <wpaul@ee.columbia.edu>
* Electrical Engineering Department
* Columbia University, New York City
*/
/*
* The KLSI USB to ethernet adapter chip contains an USB serial interface,
* ethernet MAC and embedded microcontroller (called the QT Engine).
* The chip must have firmware loaded into it before it will operate.
* Packets are passed between the chip and host via bulk transfers.
* There is an interrupt endpoint mentioned in the software spec, however
* it's currently unused. This device is 10Mbps half-duplex only, hence
* there is no media selection logic. The MAC supports a 128 entry
* multicast filter, though the exact size of the filter can depend
* on the firmware. Curiously, while the software spec describes various
* ethernet statistics counters, my sample adapter and firmware combination
* claims not to support any statistics counters at all.
*
* Note that once we load the firmware in the device, we have to be
* careful not to load it again: if you restart your computer but
* leave the adapter attached to the USB controller, it may remain
* powered on and retain its firmware. In this case, we don't need
* to load the firmware a second time.
*
* Special thanks to Rob Furr for providing an ADS Technologies
* adapter for development and testing. No monkeys were harmed during
* the development of this driver.
*/
#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <rtems/bsd/sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <net/if.h>
#include <net/if_var.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <rtems/bsd/local/usbdevs.h>
#define USB_DEBUG_VAR kue_debug
#include <dev/usb/usb_debug.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/net/usb_ethernet.h>
#include <dev/usb/net/if_kuereg.h>
#include <dev/usb/net/if_kuefw.h>
/*
* Various supported device vendors/products.
*/
static const STRUCT_USB_HOST_ID kue_devs[] = {
#define KUE_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
KUE_DEV(3COM, 3C19250),
KUE_DEV(3COM, 3C460),
KUE_DEV(ABOCOM, URE450),
KUE_DEV(ADS, UBS10BT),
KUE_DEV(ADS, UBS10BTX),
KUE_DEV(AOX, USB101),
KUE_DEV(ASANTE, EA),
KUE_DEV(ATEN, DSB650C),
KUE_DEV(ATEN, UC10T),
KUE_DEV(COREGA, ETHER_USB_T),
KUE_DEV(DLINK, DSB650C),
KUE_DEV(ENTREGA, E45),
KUE_DEV(ENTREGA, XX1),
KUE_DEV(ENTREGA, XX2),
KUE_DEV(IODATA, USBETT),
KUE_DEV(JATON, EDA),
KUE_DEV(KINGSTON, XX1),
KUE_DEV(KLSI, DUH3E10BT),
KUE_DEV(KLSI, DUH3E10BTN),
KUE_DEV(LINKSYS, USB10T),
KUE_DEV(MOBILITY, EA),
KUE_DEV(NETGEAR, EA101),
KUE_DEV(NETGEAR, EA101X),
KUE_DEV(PERACOM, ENET),
KUE_DEV(PERACOM, ENET2),
KUE_DEV(PERACOM, ENET3),
KUE_DEV(PORTGEAR, EA8),
KUE_DEV(PORTGEAR, EA9),
KUE_DEV(PORTSMITH, EEA),
KUE_DEV(SHARK, PA),
KUE_DEV(SILICOM, GPE),
KUE_DEV(SILICOM, U2E),
KUE_DEV(SMC, 2102USB),
#undef KUE_DEV
};
/* prototypes */
static device_probe_t kue_probe;
static device_attach_t kue_attach;
static device_detach_t kue_detach;
static usb_callback_t kue_bulk_read_callback;
static usb_callback_t kue_bulk_write_callback;
static uether_fn_t kue_attach_post;
static uether_fn_t kue_init;
static uether_fn_t kue_stop;
static uether_fn_t kue_start;
static uether_fn_t kue_setmulti;
static uether_fn_t kue_setpromisc;
static int kue_do_request(struct kue_softc *,
struct usb_device_request *, void *);
static int kue_setword(struct kue_softc *, uint8_t, uint16_t);
static int kue_ctl(struct kue_softc *, uint8_t, uint8_t, uint16_t,
void *, int);
static int kue_load_fw(struct kue_softc *);
static void kue_reset(struct kue_softc *);
#ifdef USB_DEBUG
static int kue_debug = 0;
static SYSCTL_NODE(_hw_usb, OID_AUTO, kue, CTLFLAG_RW, 0, "USB kue");
SYSCTL_INT(_hw_usb_kue, OID_AUTO, debug, CTLFLAG_RWTUN, &kue_debug, 0,
"Debug level");
#endif
static const struct usb_config kue_config[KUE_N_TRANSFER] = {
[KUE_BULK_DT_WR] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_OUT,
.bufsize = (MCLBYTES + 2 + 64),
.flags = {.pipe_bof = 1,},
.callback = kue_bulk_write_callback,
.timeout = 10000, /* 10 seconds */
},
[KUE_BULK_DT_RD] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.bufsize = (MCLBYTES + 2),
.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
.callback = kue_bulk_read_callback,
.timeout = 0, /* no timeout */
},
};
static device_method_t kue_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, kue_probe),
DEVMETHOD(device_attach, kue_attach),
DEVMETHOD(device_detach, kue_detach),
DEVMETHOD_END
};
static driver_t kue_driver = {
.name = "kue",
.methods = kue_methods,
.size = sizeof(struct kue_softc),
};
static devclass_t kue_devclass;
DRIVER_MODULE(kue, uhub, kue_driver, kue_devclass, NULL, 0);
MODULE_DEPEND(kue, uether, 1, 1, 1);
MODULE_DEPEND(kue, usb, 1, 1, 1);
MODULE_DEPEND(kue, ether, 1, 1, 1);
MODULE_VERSION(kue, 1);
USB_PNP_HOST_INFO(kue_devs);
static const struct usb_ether_methods kue_ue_methods = {
.ue_attach_post = kue_attach_post,
.ue_start = kue_start,
.ue_init = kue_init,
.ue_stop = kue_stop,
.ue_setmulti = kue_setmulti,
.ue_setpromisc = kue_setpromisc,
};
/*
* We have a custom do_request function which is almost like the
* regular do_request function, except it has a much longer timeout.
* Why? Because we need to make requests over the control endpoint
* to download the firmware to the device, which can take longer
* than the default timeout.
*/
static int
kue_do_request(struct kue_softc *sc, struct usb_device_request *req,
void *data)
{
usb_error_t err;
err = uether_do_request(&sc->sc_ue, req, data, 60000);
return (err);
}
static int
kue_setword(struct kue_softc *sc, uint8_t breq, uint16_t word)
{
struct usb_device_request req;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = breq;
USETW(req.wValue, word);
USETW(req.wIndex, 0);
USETW(req.wLength, 0);
return (kue_do_request(sc, &req, NULL));
}
static int
kue_ctl(struct kue_softc *sc, uint8_t rw, uint8_t breq,
uint16_t val, void *data, int len)
{
struct usb_device_request req;
if (rw == KUE_CTL_WRITE)
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
else
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = breq;
USETW(req.wValue, val);
USETW(req.wIndex, 0);
USETW(req.wLength, len);
return (kue_do_request(sc, &req, data));
}
static int
kue_load_fw(struct kue_softc *sc)
{
struct usb_device_descriptor *dd;
uint16_t hwrev;
usb_error_t err;
dd = usbd_get_device_descriptor(sc->sc_ue.ue_udev);
hwrev = UGETW(dd->bcdDevice);
/*
* First, check if we even need to load the firmware.
* If the device was still attached when the system was
* rebooted, it may already have firmware loaded in it.
* If this is the case, we don't need to do it again.
* And in fact, if we try to load it again, we'll hang,
* so we have to avoid this condition if we don't want
* to look stupid.
*
* We can test this quickly by checking the bcdRevision
* code. The NIC will return a different revision code if
* it's probed while the firmware is still loaded and
* running.
*/
if (hwrev == 0x0202)
return(0);
/* Load code segment */
err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN,
0, kue_code_seg, sizeof(kue_code_seg));
if (err) {
device_printf(sc->sc_ue.ue_dev, "failed to load code segment: %s\n",
usbd_errstr(err));
return(ENXIO);
}
/* Load fixup segment */
err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN,
0, kue_fix_seg, sizeof(kue_fix_seg));
if (err) {
device_printf(sc->sc_ue.ue_dev, "failed to load fixup segment: %s\n",
usbd_errstr(err));
return(ENXIO);
}
/* Send trigger command. */
err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN,
0, kue_trig_seg, sizeof(kue_trig_seg));
if (err) {
device_printf(sc->sc_ue.ue_dev, "failed to load trigger segment: %s\n",
usbd_errstr(err));
return(ENXIO);
}
return (0);
}
static void
kue_setpromisc(struct usb_ether *ue)
{
struct kue_softc *sc = uether_getsc(ue);
struct ifnet *ifp = uether_getifp(ue);
KUE_LOCK_ASSERT(sc, MA_OWNED);
if (ifp->if_flags & IFF_PROMISC)
sc->sc_rxfilt |= KUE_RXFILT_PROMISC;
else
sc->sc_rxfilt &= ~KUE_RXFILT_PROMISC;
kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt);
}
static void
kue_setmulti(struct usb_ether *ue)
{
struct kue_softc *sc = uether_getsc(ue);
struct ifnet *ifp = uether_getifp(ue);
struct ifmultiaddr *ifma;
int i = 0;
KUE_LOCK_ASSERT(sc, MA_OWNED);
if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI;
sc->sc_rxfilt &= ~KUE_RXFILT_MULTICAST;
kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt);
return;
}
sc->sc_rxfilt &= ~KUE_RXFILT_ALLMULTI;
if_maddr_rlock(ifp);
CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link)
{
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
/*
* If there are too many addresses for the
* internal filter, switch over to allmulti mode.
*/
if (i == KUE_MCFILTCNT(sc))
break;
memcpy(KUE_MCFILT(sc, i),
LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
ETHER_ADDR_LEN);
i++;
}
if_maddr_runlock(ifp);
if (i == KUE_MCFILTCNT(sc))
sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI;
else {
sc->sc_rxfilt |= KUE_RXFILT_MULTICAST;
kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS,
i, sc->sc_mcfilters, i * ETHER_ADDR_LEN);
}
kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt);
}
/*
* Issue a SET_CONFIGURATION command to reset the MAC. This should be
* done after the firmware is loaded into the adapter in order to
* bring it into proper operation.
*/
static void
kue_reset(struct kue_softc *sc)
{
struct usb_config_descriptor *cd;
usb_error_t err;
cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev);
err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx,
cd->bConfigurationValue);
if (err)
DPRINTF("reset failed (ignored)\n");
/* wait a little while for the chip to get its brains in order */
uether_pause(&sc->sc_ue, hz / 100);
}
static void
kue_attach_post(struct usb_ether *ue)
{
struct kue_softc *sc = uether_getsc(ue);
int error;
/* load the firmware into the NIC */
error = kue_load_fw(sc);
if (error) {
device_printf(sc->sc_ue.ue_dev, "could not load firmware\n");
/* ignore the error */
}
/* reset the adapter */
kue_reset(sc);
/* read ethernet descriptor */
kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR,
0, &sc->sc_desc, sizeof(sc->sc_desc));
/* copy in ethernet address */
memcpy(ue->ue_eaddr, sc->sc_desc.kue_macaddr, sizeof(ue->ue_eaddr));
}
/*
* Probe for a KLSI chip.
*/
static int
kue_probe(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
if (uaa->usb_mode != USB_MODE_HOST)
return (ENXIO);
if (uaa->info.bConfigIndex != KUE_CONFIG_IDX)
return (ENXIO);
if (uaa->info.bIfaceIndex != KUE_IFACE_IDX)
return (ENXIO);
return (usbd_lookup_id_by_uaa(kue_devs, sizeof(kue_devs), uaa));
}
/*
* Attach the interface. Allocate softc structures, do
* setup and ethernet/BPF attach.
*/
static int
kue_attach(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
struct kue_softc *sc = device_get_softc(dev);
struct usb_ether *ue = &sc->sc_ue;
uint8_t iface_index;
int error;
device_set_usb_desc(dev);
mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
iface_index = KUE_IFACE_IDX;
error = usbd_transfer_setup(uaa->device, &iface_index,
sc->sc_xfer, kue_config, KUE_N_TRANSFER, sc, &sc->sc_mtx);
if (error) {
device_printf(dev, "allocating USB transfers failed\n");
goto detach;
}
sc->sc_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN,
M_USBDEV, M_WAITOK);
if (sc->sc_mcfilters == NULL) {
device_printf(dev, "failed allocating USB memory\n");
goto detach;
}
ue->ue_sc = sc;
ue->ue_dev = dev;
ue->ue_udev = uaa->device;
ue->ue_mtx = &sc->sc_mtx;
ue->ue_methods = &kue_ue_methods;
error = uether_ifattach(ue);
if (error) {
device_printf(dev, "could not attach interface\n");
goto detach;
}
return (0); /* success */
detach:
kue_detach(dev);
return (ENXIO); /* failure */
}
static int
kue_detach(device_t dev)
{
struct kue_softc *sc = device_get_softc(dev);
struct usb_ether *ue = &sc->sc_ue;
usbd_transfer_unsetup(sc->sc_xfer, KUE_N_TRANSFER);
uether_ifdetach(ue);
mtx_destroy(&sc->sc_mtx);
free(sc->sc_mcfilters, M_USBDEV);
return (0);
}
/*
* A frame has been uploaded: pass the resulting mbuf chain up to
* the higher level protocols.
*/
static void
kue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct kue_softc *sc = usbd_xfer_softc(xfer);
struct usb_ether *ue = &sc->sc_ue;
struct ifnet *ifp = uether_getifp(ue);
struct usb_page_cache *pc;
uint8_t buf[2];
int len;
int actlen;
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
if (actlen <= (int)(2 + sizeof(struct ether_header))) {
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
goto tr_setup;
}
pc = usbd_xfer_get_frame(xfer, 0);
usbd_copy_out(pc, 0, buf, 2);
actlen -= 2;
len = buf[0] | (buf[1] << 8);
len = min(actlen, len);
uether_rxbuf(ue, pc, 2, len);
/* FALLTHROUGH */
case USB_ST_SETUP:
tr_setup:
usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
usbd_transfer_submit(xfer);
uether_rxflush(ue);
return;
default: /* Error */
DPRINTF("bulk read error, %s\n",
usbd_errstr(error));
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
kue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct kue_softc *sc = usbd_xfer_softc(xfer);
struct ifnet *ifp = uether_getifp(&sc->sc_ue);
struct usb_page_cache *pc;
struct mbuf *m;
int total_len;
int temp_len;
uint8_t buf[2];
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
DPRINTFN(11, "transfer complete\n");
if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
/* FALLTHROUGH */
case USB_ST_SETUP:
tr_setup:
IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
if (m == NULL)
return;
if (m->m_pkthdr.len > MCLBYTES)
m->m_pkthdr.len = MCLBYTES;
temp_len = (m->m_pkthdr.len + 2);
total_len = (temp_len + (64 - (temp_len % 64)));
/* the first two bytes are the frame length */
buf[0] = (uint8_t)(m->m_pkthdr.len);
buf[1] = (uint8_t)(m->m_pkthdr.len >> 8);
pc = usbd_xfer_get_frame(xfer, 0);
usbd_copy_in(pc, 0, buf, 2);
usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len);
usbd_frame_zero(pc, temp_len, total_len - temp_len);
usbd_xfer_set_frame_len(xfer, 0, total_len);
/*
* if there's a BPF listener, bounce a copy
* of this frame to him:
*/
BPF_MTAP(ifp, m);
m_freem(m);
usbd_transfer_submit(xfer);
return;
default: /* Error */
DPRINTFN(11, "transfer error, %s\n",
usbd_errstr(error));
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
kue_start(struct usb_ether *ue)
{
struct kue_softc *sc = uether_getsc(ue);
/*
* start the USB transfers, if not already started:
*/
usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_RD]);
usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_WR]);
}
static void
kue_init(struct usb_ether *ue)
{
struct kue_softc *sc = uether_getsc(ue);
struct ifnet *ifp = uether_getifp(ue);
KUE_LOCK_ASSERT(sc, MA_OWNED);
/* set MAC address */
kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC,
0, IF_LLADDR(ifp), ETHER_ADDR_LEN);
/* I'm not sure how to tune these. */
#if 0
/*
* Leave this one alone for now; setting it
* wrong causes lockups on some machines/controllers.
*/
kue_setword(sc, KUE_CMD_SET_SOFS, 1);
#endif
kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64);
/* load the multicast filter */
kue_setpromisc(ue);
usbd_xfer_set_stall(sc->sc_xfer[KUE_BULK_DT_WR]);
ifp->if_drv_flags |= IFF_DRV_RUNNING;
kue_start(ue);
}
static void
kue_stop(struct usb_ether *ue)
{
struct kue_softc *sc = uether_getsc(ue);
struct ifnet *ifp = uether_getifp(ue);
KUE_LOCK_ASSERT(sc, MA_OWNED);
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
/*
* stop all the transfers, if not already stopped:
*/
usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_WR]);
usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_RD]);
}
