File: [local] / sys / dev / usb / if_cdcef.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:14:21 2008 UTC (16 years, 6 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $OpenBSD: if_cdcef.c,v 1.17 2007/06/14 06:55:10 mbalmer Exp $ */
/*
* Copyright (c) 2007 Dale Rahn <drahn@openbsd.org>
* Copyright (c) 2006 Uwe Stuehler <uwe@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* USB Communication Device Class Ethernet Emulation Model function driver
* (counterpart of the host-side cdce(4) driver)
*/
#include <bpfilter.h>
#include <sys/param.h>
#include <sys/device.h>
#include <sys/socket.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/timeout.h>
#include <net/if.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbf.h>
#include <dev/usb/usbcdc.h>
#if NBPFILTER > 0
#include <net/bpf.h>
#endif
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_ether.h>
#define CDCEF_VENDOR_ID 0x0001
#define CDCEF_PRODUCT_ID 0x0001
#define CDCEF_DEVICE_CODE 0x0100
#define CDCEF_VENDOR_STRING "OpenBSD.org"
#define CDCEF_PRODUCT_STRING "CDC Ethernet Emulation"
#define CDCEF_SERIAL_STRING "1.00"
#define CDCEF_BUFSZ 1600
struct cdcef_softc {
struct usbf_function sc_dev;
usbf_config_handle sc_config;
usbf_interface_handle sc_iface;
usbf_endpoint_handle sc_ep_in;
usbf_endpoint_handle sc_ep_out;
usbf_pipe_handle sc_pipe_in;
usbf_pipe_handle sc_pipe_out;
usbf_xfer_handle sc_xfer_in;
usbf_xfer_handle sc_xfer_out;
void *sc_buffer_in;
void *sc_buffer_out;
struct timeout start_to;
struct mbuf *sc_xmit_mbuf;
struct arpcom sc_arpcom;
#define GET_IFP(sc) (&(sc)->sc_arpcom.ac_if)
int sc_rxeof_errors;
int sc_unit;
int sc_attached;
int sc_listening;
};
int cdcef_match(struct device *, void *, void *);
void cdcef_attach(struct device *, struct device *, void *);
usbf_status cdcef_do_request(usbf_function_handle,
usb_device_request_t *, void **);
void cdcef_start(struct ifnet *);
void cdcef_txeof(usbf_xfer_handle, usbf_private_handle,
usbf_status);
void cdcef_rxeof(usbf_xfer_handle, usbf_private_handle,
usbf_status);
int cdcef_ioctl(struct ifnet *ifp, u_long command, caddr_t data);
void cdcef_watchdog(struct ifnet *ifp);
void cdcef_init(struct cdcef_softc *);
void cdcef_stop(struct cdcef_softc *);
int cdcef_encap(struct cdcef_softc *sc, struct mbuf *m, int idx);
struct mbuf * cdcef_newbuf(void);
void cdcef_start_timeout (void *);
struct cfattach cdcef_ca = {
sizeof(struct cdcef_softc), cdcef_match, cdcef_attach
};
struct cfdriver cdcef_cd = {
NULL, "cdcef", DV_DULL
};
struct usbf_function_methods cdcef_methods = {
NULL, /* set_config */
cdcef_do_request
};
#ifndef CDCEF_DEBUG
#define DPRINTF(x) do {} while (0)
#else
#define DPRINTF(x) printf x
#endif
#define DEVNAME(sc) ((sc)->sc_dev.bdev.dv_xname)
/*
* USB function match/attach/detach
*/
int
cdcef_match(struct device *parent, void *match, void *aux)
{
return UMATCH_GENERIC;
}
void
cdcef_attach(struct device *parent, struct device *self, void *aux)
{
struct cdcef_softc *sc = (struct cdcef_softc *)self;
struct usbf_attach_arg *uaa = aux;
usbf_device_handle dev = uaa->device;
char *devinfop;
struct ifnet *ifp;
usbf_status err;
usb_cdc_union_descriptor_t udesc;
int s;
u_int16_t macaddr_hi;
/* Set the device identification according to the function. */
usbf_devinfo_setup(dev, UDCLASS_IN_INTERFACE, 0, 0, CDCEF_VENDOR_ID,
CDCEF_PRODUCT_ID, CDCEF_DEVICE_CODE, CDCEF_VENDOR_STRING,
CDCEF_PRODUCT_STRING, CDCEF_SERIAL_STRING);
devinfop = usbf_devinfo_alloc(dev);
printf(": %s\n", devinfop);
usbf_devinfo_free(devinfop);
/* Fill in the fields needed by the parent device. */
sc->sc_dev.methods = &cdcef_methods;
/* timeout to start delayed tranfers */
timeout_set(&sc->start_to, cdcef_start_timeout, sc);
/*
* Build descriptors according to the device class specification.
*/
err = usbf_add_config(dev, &sc->sc_config);
if (err) {
printf("%s: usbf_add_config failed\n", DEVNAME(sc));
return;
}
err = usbf_add_interface(sc->sc_config, UICLASS_CDC,
UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL, 0, NULL,
&sc->sc_iface);
if (err) {
printf("%s: usbf_add_interface failed\n", DEVNAME(sc));
return;
}
/* XXX don't use hard-coded values 128 and 16. */
err = usbf_add_endpoint(sc->sc_iface, UE_DIR_IN | 2, UE_BULK,
64, 16, &sc->sc_ep_in) ||
usbf_add_endpoint(sc->sc_iface, UE_DIR_OUT | 1, UE_BULK,
64, 16, &sc->sc_ep_out);
if (err) {
printf("%s: usbf_add_endpoint failed\n", DEVNAME(sc));
return;
}
/* Append a CDC union descriptor. */
bzero(&udesc, sizeof udesc);
udesc.bLength = sizeof udesc;
udesc.bDescriptorType = UDESC_CS_INTERFACE;
udesc.bDescriptorSubtype = UDESCSUB_CDC_UNION;
udesc.bSlaveInterface[0] = usbf_interface_number(sc->sc_iface);
err = usbf_add_config_desc(sc->sc_config,
(usb_descriptor_t *)&udesc, NULL);
if (err) {
printf("%s: usbf_add_config_desc failed\n", DEVNAME(sc));
return;
}
/*
* Close the configuration and build permanent descriptors.
*/
err = usbf_end_config(sc->sc_config);
if (err) {
printf("%s: usbf_end_config failed\n", DEVNAME(sc));
return;
}
/* Preallocate xfers and data buffers. */
sc->sc_xfer_in = usbf_alloc_xfer(dev);
sc->sc_xfer_out = usbf_alloc_xfer(dev);
sc->sc_buffer_in = usbf_alloc_buffer(sc->sc_xfer_in,
CDCEF_BUFSZ);
sc->sc_buffer_out = usbf_alloc_buffer(sc->sc_xfer_out,
CDCEF_BUFSZ);
if (sc->sc_buffer_in == NULL || sc->sc_buffer_out == NULL) {
printf("%s: usbf_alloc_buffer failed\n", DEVNAME(sc));
return;
}
/* Open the bulk pipes. */
err = usbf_open_pipe(sc->sc_iface,
usbf_endpoint_address(sc->sc_ep_out), &sc->sc_pipe_out) ||
usbf_open_pipe(sc->sc_iface,
usbf_endpoint_address(sc->sc_ep_in), &sc->sc_pipe_in);
if (err) {
printf("%s: usbf_open_pipe failed\n", DEVNAME(sc));
return;
}
/* Get ready to receive packets. */
usbf_setup_xfer(sc->sc_xfer_out, sc->sc_pipe_out, sc,
sc->sc_buffer_out, CDCEF_BUFSZ, USBD_SHORT_XFER_OK, 0, cdcef_rxeof);
err = usbf_transfer(sc->sc_xfer_out);
if (err && err != USBF_IN_PROGRESS) {
printf("%s: usbf_transfer failed\n", DEVNAME(sc));
return;
}
s = splnet();
macaddr_hi = htons(0x2acb);
bcopy(&macaddr_hi, &sc->sc_arpcom.ac_enaddr[0], sizeof(u_int16_t));
bcopy(&ticks, &sc->sc_arpcom.ac_enaddr[2], sizeof(u_int32_t));
sc->sc_arpcom.ac_enaddr[5] = (u_int8_t)(sc->sc_unit);
printf("%s: address %s\n", DEVNAME(sc),
ether_sprintf(sc->sc_arpcom.ac_enaddr));
ifp = GET_IFP(sc);
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = cdcef_ioctl;
ifp->if_start = cdcef_start;
ifp->if_watchdog = cdcef_watchdog;
strlcpy(ifp->if_xname, DEVNAME(sc), IFNAMSIZ);
IFQ_SET_READY(&ifp->if_snd);
if_attach(ifp);
ether_ifattach(ifp);
sc->sc_attached = 1;
splx(s);
}
usbf_status
cdcef_do_request(usbf_function_handle fun, usb_device_request_t *req,
void **data)
{
printf("cdcef_do_request\n");
return USBF_STALLED;
}
void
cdcef_start(struct ifnet *ifp)
{
struct cdcef_softc *sc = ifp->if_softc;
struct mbuf *m_head = NULL;
if(ifp->if_flags & IFF_OACTIVE)
return;
IFQ_POLL(&ifp->if_snd, m_head);
if (m_head == NULL) {
return;
}
if (sc->sc_listening == 0 || m_head->m_pkthdr.len > CDCEF_BUFSZ) {
/*
* drop packet because reciever is not listening,
* or if packet is larger than xmit buffer
*/
IFQ_DEQUEUE(&ifp->if_snd, m_head);
m_freem(m_head);
return;
}
if (cdcef_encap(sc, m_head, 0)) {
ifp->if_flags |= IFF_OACTIVE;
return;
}
IFQ_DEQUEUE(&ifp->if_snd, m_head);
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m_head, BPF_DIRECTION_OUT);
#endif
ifp->if_flags |= IFF_OACTIVE;
ifp->if_timer = 6;
}
void
cdcef_txeof(usbf_xfer_handle xfer, usbf_private_handle priv,
usbf_status err)
{
struct cdcef_softc *sc = priv;
struct ifnet *ifp = GET_IFP(sc);
int s;
s = splnet();
#if 0
printf("cdcef_txeof: xfer=%p, priv=%p, %s\n", xfer, priv,
usbf_errstr(err));
#endif
ifp->if_timer = 0;
ifp->if_flags &= ~IFF_OACTIVE;
if (sc->sc_xmit_mbuf != NULL) {
m_freem(sc->sc_xmit_mbuf);
sc->sc_xmit_mbuf = NULL;
}
if (err)
ifp->if_oerrors++;
else
ifp->if_opackets++;
if (IFQ_IS_EMPTY(&ifp->if_snd) == 0)
timeout_add(&sc->start_to, 1); /* XXX */
splx(s);
}
void
cdcef_start_timeout (void *v)
{
struct cdcef_softc *sc = v;
struct ifnet *ifp = GET_IFP(sc);
int s;
s = splnet();
cdcef_start(ifp);
splx(s);
}
void
cdcef_rxeof(usbf_xfer_handle xfer, usbf_private_handle priv,
usbf_status status)
{
struct cdcef_softc *sc = priv;
int total_len = 0;
struct ifnet *ifp = GET_IFP(sc);
struct mbuf *m = NULL;
int s;
#if 0
printf("cdcef_rxeof: xfer=%p, priv=%p, %s\n", xfer, priv,
usbf_errstr(status));
#endif
if (status != USBF_NORMAL_COMPLETION) {
if (status == USBF_NOT_STARTED || status == USBF_CANCELLED)
return;
if (sc->sc_rxeof_errors == 0)
printf("%s: usb error on rx: %s\n",
DEVNAME(sc), usbf_errstr(status));
/* XXX - no stalls on client */
if (sc->sc_rxeof_errors++ > 10) {
printf("%s: too many errors, disabling\n",
DEVNAME(sc));
/* sc->sc_dying = 1; */
// return;
}
goto done;
}
sc->sc_rxeof_errors = 0;
/* upon first incoming packet we know the host is listening */
if (sc->sc_listening == 0) {
sc->sc_listening = 1;
}
usbf_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
/* total_len -= 4; Strip off CRC added for Zaurus - XXX*/
if (total_len <= 1)
goto done;
if (total_len < sizeof(struct ether_header)) {
ifp->if_ierrors++;
goto done;
}
s = splnet();
if (ifp->if_flags & IFF_RUNNING) {
m = cdcef_newbuf();
if (m == NULL) {
/* message? */
ifp->if_ierrors++;
goto done1;
}
m->m_pkthdr.len = m->m_len = total_len;
bcopy(sc->sc_buffer_out, mtod(m, char *), total_len);
m->m_pkthdr.rcvif = ifp;
ifp->if_ipackets++;
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_IN);
#endif
ether_input_mbuf(ifp, m);
}
done1:
splx(s);
done:
/* Setup another xfer. */
usbf_setup_xfer(xfer, sc->sc_pipe_out, sc, sc->sc_buffer_out,
CDCEF_BUFSZ, USBD_SHORT_XFER_OK, 0, cdcef_rxeof);
status = usbf_transfer(xfer);
if (status && status != USBF_IN_PROGRESS) {
printf("%s: usbf_transfer failed\n", DEVNAME(sc));
return;
}
}
struct mbuf *
cdcef_newbuf(void)
{
struct mbuf *m;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return (NULL);
MCLGET(m, M_DONTWAIT);
if (!(m->m_flags & M_EXT)) {
m_freem(m);
return (NULL);
}
m->m_len = m->m_pkthdr.len = MCLBYTES;
m_adj(m, ETHER_ALIGN);
return (m);
}
int
cdcef_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
{
struct cdcef_softc *sc = ifp->if_softc;
struct ifaddr *ifa = (struct ifaddr *)data;
struct ifreq *ifr = (struct ifreq *)data;
int s, error = 0;
s = splnet();
switch (command) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
cdcef_init(sc);
switch (ifa->ifa_addr->sa_family) {
case AF_INET:
arp_ifinit(&sc->sc_arpcom, ifa);
break;
}
break;
case SIOCSIFMTU:
if (ifr->ifr_mtu > ETHERMTU)
error = EINVAL;
else
ifp->if_mtu = ifr->ifr_mtu;
break;
case SIOCSIFFLAGS:
if (ifp->if_flags & IFF_UP) {
if (!(ifp->if_flags & IFF_RUNNING))
cdcef_init(sc);
} else {
if (ifp->if_flags & IFF_RUNNING)
cdcef_stop(sc);
}
error = 0;
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
error = (command == SIOCADDMULTI) ?
ether_addmulti(ifr, &sc->sc_arpcom) :
ether_delmulti(ifr, &sc->sc_arpcom);
if (error == ENETRESET)
error = 0;
break;
default:
error = EINVAL;
break;
}
splx(s);
return (error);
}
void
cdcef_watchdog(struct ifnet *ifp)
{
struct cdcef_softc *sc = ifp->if_softc;
int s;
#if 0
if (sc->sc_dying)
return;
#endif
ifp->if_oerrors++;
printf("%s: watchdog timeout\n", DEVNAME(sc));
s = splusb();
ifp->if_timer = 0;
ifp->if_flags &= ~IFF_OACTIVE;
/* cancel recieve pipe? */
usbf_abort_pipe(sc->sc_pipe_in); /* in is tx pipe */
splx(s);
}
void
cdcef_init(struct cdcef_softc *sc)
{
int s;
struct ifnet *ifp = GET_IFP(sc);
if (ifp->if_flags & IFF_RUNNING)
return;
s = splnet();
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
splx(s);
}
int
cdcef_encap(struct cdcef_softc *sc, struct mbuf *m, int idx)
{
usbf_status err;
m_copydata(m, 0, m->m_pkthdr.len, sc->sc_buffer_in);
/* NO CRC */
usbf_setup_xfer(sc->sc_xfer_in, sc->sc_pipe_in, sc, sc->sc_buffer_in,
m->m_pkthdr.len, USBD_FORCE_SHORT_XFER | USBD_NO_COPY,
10000, cdcef_txeof);
err = usbf_transfer(sc->sc_xfer_in);
if (err && err != USBD_IN_PROGRESS) {
printf("encap error\n");
cdcef_stop(sc);
return (EIO);
}
sc->sc_xmit_mbuf = m;
return (0);
}
void
cdcef_stop(struct cdcef_softc *sc)
{
struct ifnet *ifp = GET_IFP(sc);
ifp->if_timer = 0;
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
/* cancel recieve pipe? */
if (sc->sc_xmit_mbuf != NULL) {
m_freem(sc->sc_xmit_mbuf);
sc->sc_xmit_mbuf = NULL;
}
}