9c4cd06355
This change intends to run the whole network stack in softint context (or normal LWP), not hardware interrupt context. Note that the work is still incomplete by this change; to that end, we also have to softint-ify if_link_state_change (and bpf) which can still run in hardware interrupt. This change softint-ifies at ifp->if_input that is called from each device driver (and ieee80211_input) to ensure Layer 2 runs in softint (e.g., ether_input and bridge_input). To this end, we provide a framework (called percpuq) that utlizes softint(9) and percpu ifqueues. With this patch, rxintr of most drivers just queues received packets and schedules a softint, and the softint dequeues packets and does rest packet processing. To minimize changes to each driver, percpuq is allocated in struct ifnet for now and that is initialized by default (in if_attach). We probably have to move percpuq to softc of each driver, but it's future work. At this point, only wm(4) has percpuq in its softc as a reference implementation. Additional information including performance numbers can be found in the thread at tech-kern@ and tech-net@: http://mail-index.netbsd.org/tech-kern/2016/01/14/msg019997.html Acknowledgment: riastradh@ greatly helped this work. Thank you very much!
666 lines
18 KiB
C
666 lines
18 KiB
C
/* $NetBSD: if_de.c,v 1.30 2016/02/09 08:32:11 ozaki-r Exp $ */
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/*
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* Copyright (c) 1982, 1986, 1989 Regents of the University of California.
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* All rights reserved.
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*
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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. Neither the name of the University 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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* @(#)if_de.c 7.12 (Berkeley) 12/16/90
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*/
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/*
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* Copyright (c) 2000 Ludd, University of Lule}, Sweden.
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* All rights reserved.
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*
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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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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University 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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* @(#)if_de.c 7.12 (Berkeley) 12/16/90
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*/
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/*
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* DEC DEUNA interface
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*
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* Lou Salkind
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* New York University
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*
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* Rewritten by Ragge 30 April 2000 to match new world.
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*
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* TODO:
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* timeout routine (get statistics)
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_de.c,v 1.30 2016/02/09 08:32:11 ozaki-r Exp $");
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#include "opt_inet.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/buf.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/errno.h>
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#include <sys/syslog.h>
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#include <sys/device.h>
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <net/if_dl.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_inarp.h>
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#endif
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#include <net/bpf.h>
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#include <net/bpfdesc.h>
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#include <sys/bus.h>
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#include <dev/qbus/ubavar.h>
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#include <dev/qbus/if_dereg.h>
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#include <dev/qbus/if_uba.h>
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#include "ioconf.h"
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/*
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* Be careful with transmit/receive buffers, each entry steals 4 map
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* registers, and there is only 496 on one unibus...
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*/
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#define NRCV 7 /* number of receive buffers (must be > 1) */
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#define NXMT 3 /* number of transmit buffers */
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/*
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* Structure containing the elements that must be in DMA-safe memory.
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*/
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struct de_cdata {
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/* the following structures are always mapped in */
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struct de_pcbb dc_pcbb; /* port control block */
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struct de_ring dc_xrent[NXMT]; /* transmit ring entrys */
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struct de_ring dc_rrent[NRCV]; /* receive ring entrys */
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struct de_udbbuf dc_udbbuf; /* UNIBUS data buffer */
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/* end mapped area */
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};
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/*
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* Ethernet software status per interface.
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*
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* Each interface is referenced by a network interface structure,
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* ds_if, which the routing code uses to locate the interface.
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* This structure contains the output queue for the interface, its address, ...
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* We also have, for each interface, a UBA interface structure, which
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* contains information about the UNIBUS resources held by the interface:
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* map registers, buffered data paths, etc. Information is cached in this
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* structure for use by the if_uba.c routines in running the interface
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* efficiently.
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*/
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struct de_softc {
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device_t sc_dev; /* Configuration common part */
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struct uba_softc *sc_uh; /* our parent */
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struct evcnt sc_intrcnt; /* Interrupt counting */
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struct ethercom sc_ec; /* Ethernet common part */
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#define sc_if sc_ec.ec_if /* network-visible interface */
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bus_space_tag_t sc_iot;
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bus_addr_t sc_ioh;
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bus_dma_tag_t sc_dmat;
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int sc_flags;
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#define DSF_MAPPED 1
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struct ubinfo sc_ui;
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struct de_cdata *sc_dedata; /* Control structure */
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struct de_cdata *sc_pdedata; /* Bus-mapped control structure */
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struct ifubinfo sc_ifuba; /* UNIBUS resources */
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struct ifrw sc_ifr[NRCV]; /* UNIBUS receive buffer maps */
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struct ifxmt sc_ifw[NXMT]; /* UNIBUS receive buffer maps */
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int sc_xindex; /* UNA index into transmit chain */
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int sc_rindex; /* UNA index into receive chain */
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int sc_xfree; /* index for next transmit buffer */
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int sc_nxmit; /* # of transmits in progress */
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void *sc_sh; /* shutdownhook cookie */
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};
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static int dematch(device_t, cfdata_t, void *);
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static void deattach(device_t, device_t, void *);
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static void dewait(struct de_softc *, const char *);
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static int deinit(struct ifnet *);
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static int deioctl(struct ifnet *, u_long, void *);
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static void dereset(device_t);
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static void destop(struct ifnet *, int);
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static void destart(struct ifnet *);
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static void derecv(struct de_softc *);
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static void deintr(void *);
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static void deshutdown(void *);
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CFATTACH_DECL_NEW(de, sizeof(struct de_softc),
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dematch, deattach, NULL, NULL);
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#define DE_WCSR(csr, val) \
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bus_space_write_2(sc->sc_iot, sc->sc_ioh, csr, val)
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#define DE_WLOW(val) \
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bus_space_write_1(sc->sc_iot, sc->sc_ioh, DE_PCSR0, val)
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#define DE_WHIGH(val) \
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bus_space_write_1(sc->sc_iot, sc->sc_ioh, DE_PCSR0 + 1, val)
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#define DE_RCSR(csr) \
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bus_space_read_2(sc->sc_iot, sc->sc_ioh, csr)
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#define LOWORD(x) ((int)(x) & 0xffff)
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#define HIWORD(x) (((int)(x) >> 16) & 0x3)
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/*
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* Interface exists: make available by filling in network interface
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* record. System will initialize the interface when it is ready
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* to accept packets. We get the ethernet address here.
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*/
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void
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deattach(device_t parent, device_t self, void *aux)
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{
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struct uba_attach_args *ua = aux;
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struct de_softc *sc = device_private(self);
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struct ifnet *ifp = &sc->sc_if;
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u_int8_t myaddr[ETHER_ADDR_LEN];
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int csr1, error;
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const char *c;
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sc->sc_dev = self;
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sc->sc_uh = device_private(parent);
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sc->sc_iot = ua->ua_iot;
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sc->sc_ioh = ua->ua_ioh;
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sc->sc_dmat = ua->ua_dmat;
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/*
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* What kind of a board is this?
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* The error bits 4-6 in pcsr1 are a device id as long as
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* the high byte is zero.
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*/
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csr1 = DE_RCSR(DE_PCSR1);
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if (csr1 & 0xff60)
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c = "broken";
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else if (csr1 & 0x10)
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c = "delua";
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else
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c = "deuna";
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/*
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* Reset the board and temporarily map
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* the pcbb buffer onto the Unibus.
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*/
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DE_WCSR(DE_PCSR0, 0); /* reset INTE */
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DELAY(100);
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DE_WCSR(DE_PCSR0, PCSR0_RSET);
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dewait(sc, "reset");
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sc->sc_ui.ui_size = sizeof(struct de_cdata);
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if ((error = ubmemalloc(sc->sc_uh, &sc->sc_ui, 0)))
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return printf(": failed ubmemalloc(), error = %d\n", error);
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sc->sc_dedata = (struct de_cdata *)sc->sc_ui.ui_vaddr;
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/*
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* Tell the DEUNA about our PCB
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*/
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DE_WCSR(DE_PCSR2, LOWORD(sc->sc_ui.ui_baddr));
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DE_WCSR(DE_PCSR3, HIWORD(sc->sc_ui.ui_baddr));
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DE_WLOW(CMD_GETPCBB);
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dewait(sc, "pcbb");
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sc->sc_dedata->dc_pcbb.pcbb0 = FC_RDPHYAD;
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DE_WLOW(CMD_GETCMD);
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dewait(sc, "read addr ");
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memcpy(myaddr, (void *)&sc->sc_dedata->dc_pcbb.pcbb2, sizeof (myaddr));
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printf(": %s, hardware address %s\n", c, ether_sprintf(myaddr));
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uba_intr_establish(ua->ua_icookie, ua->ua_cvec, deintr, sc,
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&sc->sc_intrcnt);
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uba_reset_establish(dereset, sc->sc_dev);
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evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt,
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device_xname(sc->sc_dev), "intr");
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strcpy(ifp->if_xname, device_xname(sc->sc_dev));
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ifp->if_softc = sc;
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ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI;
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ifp->if_ioctl = deioctl;
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ifp->if_start = destart;
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ifp->if_init = deinit;
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ifp->if_stop = destop;
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IFQ_SET_READY(&ifp->if_snd);
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if_attach(ifp);
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ether_ifattach(ifp, myaddr);
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ubmemfree(sc->sc_uh, &sc->sc_ui);
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sc->sc_sh = shutdownhook_establish(deshutdown, sc);
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}
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void
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destop(struct ifnet *ifp, int a)
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{
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struct de_softc *sc = ifp->if_softc;
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DE_WLOW(0);
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DELAY(5000);
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DE_WLOW(PCSR0_RSET);
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}
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/*
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* Reset of interface after UNIBUS reset.
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*/
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void
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dereset(device_t dev)
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{
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struct de_softc *sc = (void *)dev;
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sc->sc_if.if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
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sc->sc_flags &= ~DSF_MAPPED;
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sc->sc_pdedata = NULL; /* All mappings lost */
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DE_WCSR(DE_PCSR0, PCSR0_RSET);
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dewait(sc, "reset");
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deinit(&sc->sc_if);
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}
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/*
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* Initialization of interface; clear recorded pending
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* operations, and reinitialize UNIBUS usage.
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*/
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int
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deinit(struct ifnet *ifp)
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{
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struct de_softc *sc = ifp->if_softc;
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struct de_cdata *dc, *pdc;
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struct ifrw *ifrw;
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struct ifxmt *ifxp;
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struct de_ring *rp;
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int s, error;
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if (ifp->if_flags & IFF_RUNNING)
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return 0;
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if ((sc->sc_flags & DSF_MAPPED) == 0) {
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if (if_ubaminit(&sc->sc_ifuba, sc->sc_uh, MCLBYTES,
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sc->sc_ifr, NRCV, sc->sc_ifw, NXMT)) {
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aprint_error_dev(sc->sc_dev, " can't initialize\n");
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ifp->if_flags &= ~IFF_UP;
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return 0;
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}
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sc->sc_ui.ui_size = sizeof(struct de_cdata);
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if ((error = ubmemalloc(sc->sc_uh, &sc->sc_ui, 0))) {
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aprint_error(": unable to ubmemalloc(), error = %d\n",
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error);
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return 0;
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}
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sc->sc_pdedata = (struct de_cdata *)sc->sc_ui.ui_baddr;
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sc->sc_dedata = (struct de_cdata *)sc->sc_ui.ui_vaddr;
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sc->sc_flags |= DSF_MAPPED;
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}
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/*
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* Tell the DEUNA about our PCB
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*/
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DE_WCSR(DE_PCSR2, LOWORD(sc->sc_pdedata));
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DE_WCSR(DE_PCSR3, HIWORD(sc->sc_pdedata));
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DE_WLOW(0); /* reset INTE */
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DELAY(500);
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DE_WLOW(CMD_GETPCBB);
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dewait(sc, "pcbb");
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dc = sc->sc_dedata;
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pdc = sc->sc_pdedata;
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/* set the transmit and receive ring header addresses */
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dc->dc_pcbb.pcbb0 = FC_WTRING;
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dc->dc_pcbb.pcbb2 = LOWORD(&pdc->dc_udbbuf);
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dc->dc_pcbb.pcbb4 = HIWORD(&pdc->dc_udbbuf);
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dc->dc_udbbuf.b_tdrbl = LOWORD(&pdc->dc_xrent[0]);
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dc->dc_udbbuf.b_tdrbh = HIWORD(&pdc->dc_xrent[0]);
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dc->dc_udbbuf.b_telen = sizeof (struct de_ring) / sizeof(u_int16_t);
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dc->dc_udbbuf.b_trlen = NXMT;
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dc->dc_udbbuf.b_rdrbl = LOWORD(&pdc->dc_rrent[0]);
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dc->dc_udbbuf.b_rdrbh = HIWORD(&pdc->dc_rrent[0]);
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dc->dc_udbbuf.b_relen = sizeof (struct de_ring) / sizeof(u_int16_t);
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dc->dc_udbbuf.b_rrlen = NRCV;
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DE_WLOW(CMD_GETCMD);
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dewait(sc, "wtring");
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sc->sc_dedata->dc_pcbb.pcbb0 = FC_WTMODE;
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sc->sc_dedata->dc_pcbb.pcbb2 = MOD_TPAD|MOD_HDX|MOD_DRDC|MOD_ENAL;
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DE_WLOW(CMD_GETCMD);
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dewait(sc, "wtmode");
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/* set up the receive and transmit ring entries */
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ifxp = &sc->sc_ifw[0];
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for (rp = &dc->dc_xrent[0]; rp < &dc->dc_xrent[NXMT]; rp++) {
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rp->r_segbl = LOWORD(ifxp->ifw_info);
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rp->r_segbh = HIWORD(ifxp->ifw_info);
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rp->r_flags = 0;
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ifxp++;
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}
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ifrw = &sc->sc_ifr[0];
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for (rp = &dc->dc_rrent[0]; rp < &dc->dc_rrent[NRCV]; rp++) {
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rp->r_slen = MCLBYTES - 2;
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rp->r_segbl = LOWORD(ifrw->ifrw_info);
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rp->r_segbh = HIWORD(ifrw->ifrw_info);
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rp->r_flags = RFLG_OWN;
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ifrw++;
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}
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/* start up the board (rah rah) */
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s = splnet();
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sc->sc_rindex = sc->sc_xindex = sc->sc_xfree = sc->sc_nxmit = 0;
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sc->sc_if.if_flags |= IFF_RUNNING;
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DE_WLOW(PCSR0_INTE); /* avoid interlock */
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destart(&sc->sc_if); /* queue output packets */
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DE_WLOW(CMD_START|PCSR0_INTE);
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splx(s);
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return 0;
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}
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/*
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* Setup output on interface.
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* Get another datagram to send off of the interface queue,
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* and map it to the interface before starting the output.
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* Must be called from ipl >= our interrupt level.
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*/
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void
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destart(struct ifnet *ifp)
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{
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struct de_softc *sc = ifp->if_softc;
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struct de_cdata *dc;
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struct de_ring *rp;
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struct mbuf *m;
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int nxmit, len;
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/*
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* the following test is necessary, since
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* the code is not reentrant and we have
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* multiple transmission buffers.
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*/
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if (sc->sc_if.if_flags & IFF_OACTIVE)
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return;
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dc = sc->sc_dedata;
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for (nxmit = sc->sc_nxmit; nxmit < NXMT; nxmit++) {
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IFQ_DEQUEUE(&ifp->if_snd, m);
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if (m == 0)
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break;
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rp = &dc->dc_xrent[sc->sc_xfree];
|
|
if (rp->r_flags & XFLG_OWN)
|
|
panic("deuna xmit in progress");
|
|
bpf_mtap(ifp, m);
|
|
|
|
len = if_ubaput(&sc->sc_ifuba, &sc->sc_ifw[sc->sc_xfree], m);
|
|
rp->r_slen = len;
|
|
rp->r_tdrerr = 0;
|
|
rp->r_flags = XFLG_STP|XFLG_ENP|XFLG_OWN;
|
|
|
|
sc->sc_xfree++;
|
|
if (sc->sc_xfree == NXMT)
|
|
sc->sc_xfree = 0;
|
|
}
|
|
if (sc->sc_nxmit != nxmit) {
|
|
sc->sc_nxmit = nxmit;
|
|
if (ifp->if_flags & IFF_RUNNING)
|
|
DE_WLOW(PCSR0_INTE|CMD_PDMD);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Command done interrupt.
|
|
*/
|
|
void
|
|
deintr(void *arg)
|
|
{
|
|
struct ifxmt *ifxp;
|
|
struct de_cdata *dc;
|
|
struct de_softc *sc = arg;
|
|
struct de_ring *rp;
|
|
short csr0;
|
|
|
|
/* save flags right away - clear out interrupt bits */
|
|
csr0 = DE_RCSR(DE_PCSR0);
|
|
DE_WHIGH(csr0 >> 8);
|
|
|
|
|
|
sc->sc_if.if_flags |= IFF_OACTIVE; /* prevent entering destart */
|
|
/*
|
|
* if receive, put receive buffer on mbuf
|
|
* and hang the request again
|
|
*/
|
|
derecv(sc);
|
|
|
|
/*
|
|
* Poll transmit ring and check status.
|
|
* Be careful about loopback requests.
|
|
* Then free buffer space and check for
|
|
* more transmit requests.
|
|
*/
|
|
dc = sc->sc_dedata;
|
|
for ( ; sc->sc_nxmit > 0; sc->sc_nxmit--) {
|
|
rp = &dc->dc_xrent[sc->sc_xindex];
|
|
if (rp->r_flags & XFLG_OWN)
|
|
break;
|
|
|
|
sc->sc_if.if_opackets++;
|
|
ifxp = &sc->sc_ifw[sc->sc_xindex];
|
|
/* check for unusual conditions */
|
|
if (rp->r_flags & (XFLG_ERRS|XFLG_MTCH|XFLG_ONE|XFLG_MORE)) {
|
|
if (rp->r_flags & XFLG_ERRS) {
|
|
/* output error */
|
|
sc->sc_if.if_oerrors++;
|
|
} else if (rp->r_flags & XFLG_ONE) {
|
|
/* one collision */
|
|
sc->sc_if.if_collisions++;
|
|
} else if (rp->r_flags & XFLG_MORE) {
|
|
/* more than one collision */
|
|
sc->sc_if.if_collisions += 2; /* guess */
|
|
}
|
|
}
|
|
if_ubaend(&sc->sc_ifuba, ifxp);
|
|
/* check if next transmit buffer also finished */
|
|
sc->sc_xindex++;
|
|
if (sc->sc_xindex == NXMT)
|
|
sc->sc_xindex = 0;
|
|
}
|
|
sc->sc_if.if_flags &= ~IFF_OACTIVE;
|
|
destart(&sc->sc_if);
|
|
|
|
if (csr0 & PCSR0_RCBI) {
|
|
DE_WLOW(PCSR0_INTE|CMD_PDMD);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Ethernet interface receiver interface.
|
|
* If input error just drop packet.
|
|
* Otherwise purge input buffered data path and examine
|
|
* packet to determine type. If can't determine length
|
|
* from type, then have to drop packet. Othewise decapsulate
|
|
* packet based on type and pass to type specific higher-level
|
|
* input routine.
|
|
*/
|
|
void
|
|
derecv(struct de_softc *sc)
|
|
{
|
|
struct ifnet *ifp = &sc->sc_if;
|
|
struct de_ring *rp;
|
|
struct de_cdata *dc;
|
|
struct mbuf *m;
|
|
int len;
|
|
|
|
dc = sc->sc_dedata;
|
|
rp = &dc->dc_rrent[sc->sc_rindex];
|
|
while ((rp->r_flags & RFLG_OWN) == 0) {
|
|
sc->sc_if.if_ipackets++;
|
|
len = (rp->r_lenerr&RERR_MLEN) - ETHER_CRC_LEN;
|
|
/* check for errors */
|
|
if ((rp->r_flags & (RFLG_ERRS|RFLG_FRAM|RFLG_OFLO|RFLG_CRC)) ||
|
|
(rp->r_lenerr & (RERR_BUFL|RERR_UBTO))) {
|
|
sc->sc_if.if_ierrors++;
|
|
goto next;
|
|
}
|
|
m = if_ubaget(&sc->sc_ifuba, &sc->sc_ifr[sc->sc_rindex],
|
|
ifp, len);
|
|
if (m == 0) {
|
|
sc->sc_if.if_ierrors++;
|
|
goto next;
|
|
}
|
|
bpf_mtap(ifp, m);
|
|
|
|
if_percpuq_enqueue(ifp->if_percpuq, m);
|
|
|
|
/* hang the receive buffer again */
|
|
next: rp->r_lenerr = 0;
|
|
rp->r_flags = RFLG_OWN;
|
|
|
|
/* check next receive buffer */
|
|
sc->sc_rindex++;
|
|
if (sc->sc_rindex == NRCV)
|
|
sc->sc_rindex = 0;
|
|
rp = &dc->dc_rrent[sc->sc_rindex];
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Process an ioctl request.
|
|
*/
|
|
int
|
|
deioctl(struct ifnet *ifp, u_long cmd, void *data)
|
|
{
|
|
int s, error = 0;
|
|
|
|
s = splnet();
|
|
|
|
error = ether_ioctl(ifp, cmd, data);
|
|
if (error == ENETRESET)
|
|
error = 0;
|
|
|
|
splx(s);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Await completion of the named function
|
|
* and check for errors.
|
|
*/
|
|
void
|
|
dewait(struct de_softc *sc, const char *fn)
|
|
{
|
|
int csr0, csr1;
|
|
|
|
while ((DE_RCSR(DE_PCSR0) & PCSR0_INTR) == 0)
|
|
;
|
|
csr0 = DE_RCSR(DE_PCSR0);
|
|
DE_WHIGH(csr0 >> 8);
|
|
if (csr0 & PCSR0_PCEI) {
|
|
char bits0[64];
|
|
char bits1[64];
|
|
csr1 = DE_RCSR(DE_PCSR1);
|
|
snprintb(bits0, sizeof(bits0), PCSR0_BITS, csr0);
|
|
snprintb(bits1, sizeof(bits1), PCSR1_BITS, csr1);
|
|
aprint_error_dev(sc->sc_dev, "%s failed, csr0=%s csr1=%s\n",
|
|
fn, bits0, bits1);
|
|
}
|
|
}
|
|
|
|
int
|
|
dematch(device_t parent, cfdata_t cf, void *aux)
|
|
{
|
|
struct uba_attach_args *ua = aux;
|
|
struct de_softc ssc;
|
|
struct de_softc *sc = &ssc;
|
|
int i;
|
|
|
|
sc->sc_iot = ua->ua_iot;
|
|
sc->sc_ioh = ua->ua_ioh;
|
|
/*
|
|
* Make sure self-test is finished before we screw with the board.
|
|
* Self-test on a DELUA can take 15 seconds (argh).
|
|
*/
|
|
for (i = 0;
|
|
(i < 160) &&
|
|
(DE_RCSR(DE_PCSR0) & PCSR0_FATI) == 0 &&
|
|
(DE_RCSR(DE_PCSR1) & PCSR1_STMASK) == STAT_RESET;
|
|
++i)
|
|
DELAY(50000);
|
|
if (((DE_RCSR(DE_PCSR0) & PCSR0_FATI) != 0) ||
|
|
(((DE_RCSR(DE_PCSR1) & PCSR1_STMASK) != STAT_READY) &&
|
|
((DE_RCSR(DE_PCSR1) & PCSR1_STMASK) != STAT_RUN)))
|
|
return(0);
|
|
|
|
DE_WCSR(DE_PCSR0, 0);
|
|
DELAY(5000);
|
|
DE_WCSR(DE_PCSR0, PCSR0_RSET);
|
|
while ((DE_RCSR(DE_PCSR0) & PCSR0_INTR) == 0)
|
|
;
|
|
/* make board interrupt by executing a GETPCBB command */
|
|
DE_WCSR(DE_PCSR0, PCSR0_INTE);
|
|
DE_WCSR(DE_PCSR2, 0);
|
|
DE_WCSR(DE_PCSR3, 0);
|
|
DE_WCSR(DE_PCSR0, PCSR0_INTE|CMD_GETPCBB);
|
|
DELAY(50000);
|
|
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
deshutdown(void *arg)
|
|
{
|
|
struct de_softc *sc = arg;
|
|
|
|
DE_WCSR(DE_PCSR0, 0);
|
|
DELAY(1000);
|
|
DE_WCSR(DE_PCSR0, PCSR0_RSET);
|
|
dewait(sc, "shutdown");
|
|
}
|