48249fe0c8
- Fix overwrite problem of freed buffers. It was rare but could happen when fwohci_arcv() is called before fwohci_txd() is called for the transcation. - Drain AT queues and pend AR queues on SID receive rather than BUS reset to make sure DMA actually stops. - Do agent reset in sbp_timeout().
630 lines
14 KiB
C
630 lines
14 KiB
C
/*
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* Copyright (C) 2002
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* Hidetoshi Shimokawa. 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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*
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* This product includes software developed by Hidetoshi Shimokawa.
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*
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* 4. Neither the name of the author nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* $FreeBSD$
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*/
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#include "opt_inet.h"
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/systm.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <net/bpf.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/if_vlan_var.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <dev/firewire/firewire.h>
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#include <dev/firewire/firewirereg.h>
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#include <dev/firewire/if_fwevar.h>
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#define FWEDEBUG if (fwedebug) printf
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#define MAX_QUEUED IFQ_MAXLEN /* 50 */
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/* network interface */
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static void fwe_start __P((struct ifnet *));
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static int fwe_ioctl __P((struct ifnet *, u_long, caddr_t));
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static void fwe_init __P((void *));
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static void fwe_as_output __P((struct fwe_softc *, struct ifnet *));
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static void fwe_as_input __P((struct fw_xferq *));
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static int fwedebug = 0;
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static int stream_ch = 1;
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MALLOC_DECLARE(M_FWE);
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MALLOC_DEFINE(M_FWE, "if_fwe", "Ethernet over FireWire interface");
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SYSCTL_INT(_debug, OID_AUTO, if_fwe_debug, CTLFLAG_RW, &fwedebug, 0, "");
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SYSCTL_DECL(_hw_firewire);
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SYSCTL_NODE(_hw_firewire, OID_AUTO, fwe, CTLFLAG_RD, 0,
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"Ethernet Emulation Subsystem");
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SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, stream_ch, CTLFLAG_RW, &stream_ch, 0,
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"Stream channel to use");
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#ifdef DEVICE_POLLING
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#define FWE_POLL_REGISTER(func, fwe, ifp) \
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if (ether_poll_register(func, ifp)) { \
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struct firewire_comm *fc = (fwe)->fd.fc; \
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fc->set_intr(fc, 0); \
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}
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#define FWE_POLL_DEREGISTER(fwe, ifp) \
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do { \
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struct firewire_comm *fc = (fwe)->fd.fc; \
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ether_poll_deregister(ifp); \
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fc->set_intr(fc, 1); \
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} while(0) \
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static poll_handler_t fwe_poll;
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static void
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fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
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{
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struct fwe_softc *fwe;
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struct firewire_comm *fc;
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fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
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fc = fwe->fd.fc;
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if (cmd == POLL_DEREGISTER) {
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/* enable interrupts */
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fc->set_intr(fc, 1);
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return;
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}
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fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count);
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}
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#else
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#define FWE_POLL_REGISTER(func, fwe, ifp)
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#define FWE_POLL_DEREGISTER(fwe, ifp)
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#endif
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static void
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fwe_identify(driver_t *driver, device_t parent)
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{
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BUS_ADD_CHILD(parent, 0, "if_fwe", device_get_unit(parent));
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}
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static int
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fwe_probe(device_t dev)
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{
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device_t pa;
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pa = device_get_parent(dev);
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if(device_get_unit(dev) != device_get_unit(pa)){
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return(ENXIO);
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}
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device_set_desc(dev, "Ethernet over FireWire");
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return (0);
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}
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static int
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fwe_attach(device_t dev)
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{
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struct fwe_softc *fwe;
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struct ifnet *ifp;
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int unit, s;
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u_char *eaddr;
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struct fw_eui64 *eui;
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fwe = ((struct fwe_softc *)device_get_softc(dev));
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unit = device_get_unit(dev);
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bzero(fwe, sizeof(struct fwe_softc));
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/* XXX */
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fwe->stream_ch = stream_ch;
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fwe->dma_ch = -1;
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fwe->fd.fc = device_get_ivars(dev);
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fwe->fd.dev = dev;
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fwe->fd.post_explore = NULL;
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fwe->eth_softc.fwe = fwe;
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fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM;
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fwe->pkt_hdr.mode.stream.sy = 0;
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fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
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/* generate fake MAC address: first and last 3bytes from eui64 */
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#define LOCAL (0x02)
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#define GROUP (0x01)
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eaddr = &fwe->eth_softc.arpcom.ac_enaddr[0];
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eui = &fwe->fd.fc->eui;
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eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP;
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eaddr[1] = FW_EUI64_BYTE(eui, 1);
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eaddr[2] = FW_EUI64_BYTE(eui, 2);
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eaddr[3] = FW_EUI64_BYTE(eui, 5);
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eaddr[4] = FW_EUI64_BYTE(eui, 6);
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eaddr[5] = FW_EUI64_BYTE(eui, 7);
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printf("if_fwe%d: Fake Ethernet address: "
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"%02x:%02x:%02x:%02x:%02x:%02x\n", unit,
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eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]);
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/* fill the rest and attach interface */
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ifp = &fwe->fwe_if;
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ifp->if_softc = &fwe->eth_softc;
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ifp->if_unit = unit;
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ifp->if_name = "fwe";
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ifp->if_init = fwe_init;
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ifp->if_output = ether_output;
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ifp->if_start = fwe_start;
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ifp->if_ioctl = fwe_ioctl;
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ifp->if_mtu = ETHERMTU;
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ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST);
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ifp->if_snd.ifq_maxlen = FWMAXQUEUE - 1;
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s = splimp();
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#if __FreeBSD_version >= 500000
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ether_ifattach(ifp, eaddr);
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#else
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ether_ifattach(ifp, 1);
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#endif
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splx(s);
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/* Tell the upper layer(s) we support long frames. */
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ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
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#if __FreeBSD_version >= 500000
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ifp->if_capabilities |= IFCAP_VLAN_MTU;
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#endif
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ifp->if_snd.ifq_maxlen = MAX_QUEUED - 1;
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FWEDEBUG("interface %s%d created.\n", ifp->if_name, ifp->if_unit);
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return 0;
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}
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static void
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fwe_stop(struct fwe_softc *fwe)
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{
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struct firewire_comm *fc;
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struct fw_xferq *xferq;
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struct ifnet *ifp = &fwe->fwe_if;
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fc = fwe->fd.fc;
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FWE_POLL_DEREGISTER(fwe, ifp);
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if (fwe->dma_ch >= 0) {
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xferq = fc->ir[fwe->dma_ch];
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if (xferq->flag & FWXFERQ_RUNNING)
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fc->irx_disable(fc, fwe->dma_ch);
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xferq->flag &=
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~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_HANDLER);
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/* XXX dequeue xferq->q */
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fwe->dma_ch = -1;
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}
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ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
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}
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static int
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fwe_detach(device_t dev)
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{
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struct fwe_softc *fwe;
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int s;
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fwe = (struct fwe_softc *)device_get_softc(dev);
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s = splimp();
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fwe_stop(fwe);
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#if __FreeBSD_version >= 500000
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ether_ifdetach(&fwe->fwe_if);
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#else
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ether_ifdetach(&fwe->fwe_if, 1);
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#endif
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splx(s);
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return 0;
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}
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static void
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fwe_init(void *arg)
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{
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struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe;
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struct firewire_comm *fc;
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struct ifnet *ifp = &fwe->fwe_if;
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struct fw_xferq *xferq;
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int i;
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FWEDEBUG("initializing %s%d\n", ifp->if_name, ifp->if_unit);
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/* XXX keep promiscoud mode */
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ifp->if_flags |= IFF_PROMISC;
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fc = fwe->fd.fc;
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#define START 0
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if (fwe->dma_ch < 0) {
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xferq = NULL;
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for (i = START; i < fc->nisodma; i ++) {
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xferq = fc->ir[i];
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if ((xferq->flag & FWXFERQ_OPEN) == 0)
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break;
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}
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if (xferq == NULL) {
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printf("no free dma channel\n");
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return;
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}
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fwe->dma_ch = i;
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fwe->stream_ch = stream_ch;
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fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
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/* allocate DMA channel and init packet mode */
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xferq->flag |= FWXFERQ_OPEN | FWXFERQ_PACKET;
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xferq->flag |= fwe->stream_ch & 0xff;
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/* register fwe_input handler */
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xferq->sc = (caddr_t) fwe;
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xferq->hand = fwe_as_input;
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xferq->flag |= FWXFERQ_HANDLER;
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} else
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xferq = fc->ir[fwe->dma_ch];
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/* start dma */
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if ((xferq->flag & FWXFERQ_RUNNING) == 0)
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fc->irx_enable(fc, fwe->dma_ch);
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ifp->if_flags |= IFF_RUNNING;
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ifp->if_flags &= ~IFF_OACTIVE;
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FWE_POLL_REGISTER(fwe_poll, fwe, ifp);
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#if 0
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/* attempt to start output */
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fwe_start(ifp);
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#endif
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}
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static int
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fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
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{
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struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
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struct ifstat *ifs = NULL;
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int s, error, len;
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switch (cmd) {
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case SIOCSIFFLAGS:
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s = splimp();
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if (ifp->if_flags & IFF_UP) {
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if (!(ifp->if_flags & IFF_RUNNING))
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fwe_init(&fwe->eth_softc);
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} else {
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if (ifp->if_flags & IFF_RUNNING)
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fwe_stop(fwe);
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}
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/* XXX keep promiscoud mode */
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ifp->if_flags |= IFF_PROMISC;
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splx(s);
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break;
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case SIOCADDMULTI:
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case SIOCDELMULTI:
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break;
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case SIOCGIFSTATUS:
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s = splimp();
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ifs = (struct ifstat *)data;
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len = strlen(ifs->ascii);
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if (len < sizeof(ifs->ascii))
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snprintf(ifs->ascii + len,
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sizeof(ifs->ascii) - len,
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"\tch %d dma %d\n",
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fwe->stream_ch, fwe->dma_ch);
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splx(s);
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break;
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#if __FreeBSD_version >= 500000
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default:
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#else
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case SIOCSIFADDR:
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case SIOCGIFADDR:
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case SIOCSIFMTU:
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#endif
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s = splimp();
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error = ether_ioctl(ifp, cmd, data);
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splx(s);
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return (error);
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#if __FreeBSD_version < 500000
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default:
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return (EINVAL);
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#endif
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}
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return (0);
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}
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static void
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fwe_start(struct ifnet *ifp)
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{
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struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
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int s;
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#if 1
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FWEDEBUG("%s%d starting\n", ifp->if_name, ifp->if_unit);
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if (fwe->dma_ch < 0) {
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struct mbuf *m = NULL;
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FWEDEBUG("%s%d not ready.\n", ifp->if_name, ifp->if_unit);
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s = splimp();
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do {
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IF_DEQUEUE(&ifp->if_snd, m);
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if (m != NULL)
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m_freem(m);
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ifp->if_oerrors ++;
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} while (m != NULL);
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splx(s);
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return;
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}
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#endif
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s = splimp();
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ifp->if_flags |= IFF_OACTIVE;
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if (ifp->if_snd.ifq_len != 0)
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fwe_as_output(fwe, ifp);
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ifp->if_flags &= ~IFF_OACTIVE;
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splx(s);
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}
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static void
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fwe_output_callback(struct fw_xfer *xfer)
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{
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struct fwe_softc *fwe;
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struct ifnet *ifp;
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fwe = (struct fwe_softc *)xfer->sc;
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/* XXX error check */
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FWEDEBUG("resp = %d\n", xfer->resp);
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m_freem(xfer->mbuf);
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xfer->send.buf = NULL;
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fw_xfer_free(xfer);
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#if 1
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/* XXX for queue full */
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ifp = &fwe->fwe_if;
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if (ifp->if_snd.ifq_head != NULL)
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fwe_start(ifp);
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#endif
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}
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#define HDR_LEN 4
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#define ALIGN_PAD 2
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/* Async. stream output */
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static void
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fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp)
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{
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struct mbuf *m;
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struct fw_xfer *xfer;
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struct fw_xferq *xferq;
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struct fw_pkt *fp;
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int i = 0;
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xfer = NULL;
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xferq = fwe->fd.fc->atq;
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while (xferq->queued < xferq->maxq) {
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IF_DEQUEUE(&ifp->if_snd, m);
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if (m == NULL)
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break;
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xfer = fw_xfer_alloc(M_FWXFER);
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if (xfer == NULL) {
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return;
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}
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#if __FreeBSD_version >= 500000
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BPF_MTAP(ifp, m);
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#else
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if (ifp->if_bpf != NULL)
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bpf_mtap(ifp, m);
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#endif
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xfer->send.off = 0;
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xfer->spd = 2;
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xfer->fc = fwe->fd.fc;
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xfer->retry_req = fw_asybusy;
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xfer->sc = (caddr_t)fwe;
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xfer->act.hand = fwe_output_callback;
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/* keep ip packet alignment for alpha */
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M_PREPEND(m, ALIGN_PAD, M_NOWAIT);
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fp = (struct fw_pkt *)&xfer->dst; /* XXX */
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xfer->dst = *((int32_t *)&fwe->pkt_hdr);
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fp->mode.stream.len = htons(m->m_pkthdr.len);
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xfer->send.buf = (caddr_t) fp;
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xfer->mbuf = m;
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xfer->send.len = m->m_pkthdr.len + HDR_LEN;
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i++;
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if (fw_asyreq(xfer->fc, -1, xfer) != 0) {
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/* error */
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ifp->if_oerrors ++;
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/* XXX set error code */
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fwe_output_callback(xfer);
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} else {
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ifp->if_opackets ++;
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}
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}
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#if 0
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if (i > 1)
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printf("%d queued\n", i);
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#endif
|
|
if (xfer != NULL)
|
|
xferq->start(xfer->fc);
|
|
}
|
|
|
|
#if __FreeBSD_version >= 500000
|
|
static void
|
|
fwe_free(void *buf, void *args)
|
|
{
|
|
FWEDEBUG("fwe_free:\n");
|
|
free(buf, M_FW);
|
|
}
|
|
|
|
#else
|
|
static void
|
|
fwe_free(caddr_t buf, u_int size)
|
|
{
|
|
int *p;
|
|
FWEDEBUG("fwe_free:\n");
|
|
p = (int *)buf;
|
|
(*p) --;
|
|
if (*p < 1)
|
|
free(buf, M_FW);
|
|
}
|
|
|
|
static void
|
|
fwe_ref(caddr_t buf, u_int size)
|
|
{
|
|
int *p;
|
|
|
|
FWEDEBUG("fwe_ref: called\n");
|
|
p = (int *)buf;
|
|
(*p) ++;
|
|
}
|
|
#endif
|
|
|
|
/* Async. stream output */
|
|
static void
|
|
fwe_as_input(struct fw_xferq *xferq)
|
|
{
|
|
struct mbuf *m;
|
|
struct ether_header *eh;
|
|
struct ifnet *ifp;
|
|
struct fw_xfer *xfer;
|
|
struct fwe_softc *fwe;
|
|
u_char *c;
|
|
int len;
|
|
caddr_t p;
|
|
|
|
fwe = (struct fwe_softc *)xferq->sc;
|
|
ifp = &fwe->fwe_if;
|
|
#if 0
|
|
FWE_POLL_REGISTER(fwe_poll, fwe, ifp);
|
|
#endif
|
|
while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
|
|
STAILQ_REMOVE_HEAD(&xferq->q, link);
|
|
xferq->queued --;
|
|
MGETHDR(m, M_NOWAIT, MT_DATA);
|
|
if (m == NULL) {
|
|
printf("MGETHDR failed\n");
|
|
fw_xfer_free(xfer);
|
|
return;
|
|
}
|
|
len = xfer->recv.off + xfer->recv.len;
|
|
FWEDEBUG("fwe_as_input len=%d\n", len);
|
|
#if __FreeBSD_version >= 500000
|
|
MEXTADD(m, xfer->recv.buf, len, fwe_free, NULL, 0, EXT_NET_DRV);
|
|
#else
|
|
m->m_flags |= M_EXT;
|
|
m->m_ext.ext_buf = xfer->recv.buf;
|
|
m->m_ext.ext_size = len;
|
|
m->m_ext.ext_free = fwe_free;
|
|
m->m_ext.ext_ref = fwe_ref;
|
|
*((int *)m->m_ext.ext_buf) = 1; /* XXX refcount */
|
|
#endif
|
|
p = xfer->recv.buf + xfer->recv.off + HDR_LEN + ALIGN_PAD;
|
|
eh = (struct ether_header *)p;
|
|
#if __FreeBSD_version >= 500000
|
|
len -= xfer->recv.off + HDR_LEN + ALIGN_PAD;
|
|
#else
|
|
p += sizeof(struct ether_header);
|
|
len -= xfer->recv.off + HDR_LEN + ALIGN_PAD
|
|
+ sizeof(struct ether_header);
|
|
#endif
|
|
m->m_data = p;
|
|
m->m_len = m->m_pkthdr.len = len;
|
|
m->m_pkthdr.rcvif = ifp;
|
|
c = (char *)eh;
|
|
#if 0
|
|
FWEDEBUG("%02x %02x %02x %02x %02x %02x\n"
|
|
"%02x %02x %02x %02x %02x %02x\n"
|
|
"%02x %02x %02x %02x\n"
|
|
"%02x %02x %02x %02x\n"
|
|
"%02x %02x %02x %02x\n"
|
|
"%02x %02x %02x %02x\n",
|
|
c[0], c[1], c[2], c[3], c[4], c[5],
|
|
c[6], c[7], c[8], c[9], c[10], c[11],
|
|
c[12], c[13], c[14], c[15],
|
|
c[16], c[17], c[18], c[19],
|
|
c[20], c[21], c[22], c[23],
|
|
c[20], c[21], c[22], c[23]
|
|
);
|
|
#endif
|
|
#if __FreeBSD_version >= 500000
|
|
(*ifp->if_input)(ifp, m);
|
|
#else
|
|
ether_input(ifp, eh, m);
|
|
#endif
|
|
ifp->if_ipackets ++;
|
|
|
|
xfer->recv.buf = NULL;
|
|
fw_xfer_free(xfer);
|
|
}
|
|
}
|
|
|
|
|
|
static devclass_t fwe_devclass;
|
|
|
|
static device_method_t fwe_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_identify, fwe_identify),
|
|
DEVMETHOD(device_probe, fwe_probe),
|
|
DEVMETHOD(device_attach, fwe_attach),
|
|
DEVMETHOD(device_detach, fwe_detach),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t fwe_driver = {
|
|
"if_fwe",
|
|
fwe_methods,
|
|
sizeof(struct fwe_softc),
|
|
};
|
|
|
|
|
|
DRIVER_MODULE(if_fwe, firewire, fwe_driver, fwe_devclass, 0, 0);
|
|
MODULE_VERSION(if_fwe, 1);
|
|
MODULE_DEPEND(if_fwe, firewire, 1, 1, 1);
|