1705 lines
37 KiB
C
1705 lines
37 KiB
C
/*
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* Copyright (c) 1997, 1998
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* Bill Paul <wpaul@ctr.columbia.edu>. 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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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-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 Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* VIA Rhine fast ethernet PCI NIC driver
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*
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* Supports various network adapters based on the VIA Rhine
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* and Rhine II PCI controllers, including the D-Link DFE530TX.
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* Datasheets are available at http://www.via.com.tw.
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*
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* Written by Bill Paul <wpaul@ctr.columbia.edu>
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* Electrical Engineering Department
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* Columbia University, New York City
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*/
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/*
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* The VIA Rhine controllers are similar in some respects to the
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* the DEC tulip chips, except less complicated. The controller
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* uses an MII bus and an external physical layer interface. The
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* receiver has a one entry perfect filter and a 64-bit hash table
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* multicast filter. Transmit and receive descriptors are similar
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* to the tulip.
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*
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* The Rhine has a serious flaw in its transmit DMA mechanism:
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* transmit buffers must be longword aligned. Unfortunately,
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* FreeBSD doesn't guarantee that mbufs will be filled in starting
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* at longword boundaries, so we have to do a buffer copy before
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* transmission.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sockio.h>
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#include <sys/mbuf.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/ethernet.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/bpf.h>
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#include <vm/vm.h> /* for vtophys */
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#include <vm/pmap.h> /* for vtophys */
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#include <machine/bus_pio.h>
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#include <machine/bus_memio.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include <pci/pcireg.h>
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#include <pci/pcivar.h>
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#define VR_USEIOSPACE
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#include <pci/if_vrreg.h>
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MODULE_DEPEND(vr, miibus, 1, 1, 1);
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/* "controller miibus0" required. See GENERIC if you get errors here. */
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#include "miibus_if.h"
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif
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/*
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* Various supported device vendors/types and their names.
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*/
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static struct vr_type vr_devs[] = {
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{ VIA_VENDORID, VIA_DEVICEID_RHINE,
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"VIA VT3043 Rhine I 10/100BaseTX" },
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{ VIA_VENDORID, VIA_DEVICEID_RHINE_II,
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"VIA VT86C100A Rhine II 10/100BaseTX" },
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{ VIA_VENDORID, VIA_DEVICEID_RHINE_II_2,
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"VIA VT6102 Rhine II 10/100BaseTX" },
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{ DELTA_VENDORID, DELTA_DEVICEID_RHINE_II,
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"Delta Electronics Rhine II 10/100BaseTX" },
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{ ADDTRON_VENDORID, ADDTRON_DEVICEID_RHINE_II,
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"Addtron Technology Rhine II 10/100BaseTX" },
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{ 0, 0, NULL }
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};
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static int vr_probe (device_t);
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static int vr_attach (device_t);
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static int vr_detach (device_t);
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static int vr_newbuf (struct vr_softc *,
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struct vr_chain_onefrag *,
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struct mbuf *);
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static int vr_encap (struct vr_softc *, struct vr_chain *,
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struct mbuf * );
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static void vr_rxeof (struct vr_softc *);
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static void vr_rxeoc (struct vr_softc *);
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static void vr_txeof (struct vr_softc *);
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static void vr_txeoc (struct vr_softc *);
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static void vr_tick (void *);
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static void vr_intr (void *);
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static void vr_start (struct ifnet *);
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static int vr_ioctl (struct ifnet *, u_long, caddr_t);
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static void vr_init (void *);
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static void vr_stop (struct vr_softc *);
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static void vr_watchdog (struct ifnet *);
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static void vr_shutdown (device_t);
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static int vr_ifmedia_upd (struct ifnet *);
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static void vr_ifmedia_sts (struct ifnet *, struct ifmediareq *);
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static void vr_mii_sync (struct vr_softc *);
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static void vr_mii_send (struct vr_softc *, u_int32_t, int);
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static int vr_mii_readreg (struct vr_softc *, struct vr_mii_frame *);
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static int vr_mii_writereg (struct vr_softc *, struct vr_mii_frame *);
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static int vr_miibus_readreg (device_t, int, int);
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static int vr_miibus_writereg (device_t, int, int, int);
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static void vr_miibus_statchg (device_t);
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static void vr_setcfg (struct vr_softc *, int);
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static u_int8_t vr_calchash (u_int8_t *);
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static void vr_setmulti (struct vr_softc *);
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static void vr_reset (struct vr_softc *);
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static int vr_list_rx_init (struct vr_softc *);
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static int vr_list_tx_init (struct vr_softc *);
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#ifdef VR_USEIOSPACE
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#define VR_RES SYS_RES_IOPORT
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#define VR_RID VR_PCI_LOIO
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#else
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#define VR_RES SYS_RES_MEMORY
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#define VR_RID VR_PCI_LOMEM
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#endif
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static device_method_t vr_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, vr_probe),
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DEVMETHOD(device_attach, vr_attach),
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DEVMETHOD(device_detach, vr_detach),
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DEVMETHOD(device_shutdown, vr_shutdown),
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/* bus interface */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_driver_added, bus_generic_driver_added),
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/* MII interface */
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DEVMETHOD(miibus_readreg, vr_miibus_readreg),
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DEVMETHOD(miibus_writereg, vr_miibus_writereg),
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DEVMETHOD(miibus_statchg, vr_miibus_statchg),
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{ 0, 0 }
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};
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static driver_t vr_driver = {
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"vr",
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vr_methods,
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sizeof(struct vr_softc)
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};
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static devclass_t vr_devclass;
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DRIVER_MODULE(if_vr, pci, vr_driver, vr_devclass, 0, 0);
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DRIVER_MODULE(miibus, vr, miibus_driver, miibus_devclass, 0, 0);
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#define VR_SETBIT(sc, reg, x) \
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CSR_WRITE_1(sc, reg, \
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CSR_READ_1(sc, reg) | (x))
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#define VR_CLRBIT(sc, reg, x) \
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CSR_WRITE_1(sc, reg, \
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CSR_READ_1(sc, reg) & ~(x))
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#define VR_SETBIT16(sc, reg, x) \
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CSR_WRITE_2(sc, reg, \
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CSR_READ_2(sc, reg) | (x))
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#define VR_CLRBIT16(sc, reg, x) \
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CSR_WRITE_2(sc, reg, \
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CSR_READ_2(sc, reg) & ~(x))
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#define VR_SETBIT32(sc, reg, x) \
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CSR_WRITE_4(sc, reg, \
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CSR_READ_4(sc, reg) | (x))
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#define VR_CLRBIT32(sc, reg, x) \
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CSR_WRITE_4(sc, reg, \
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CSR_READ_4(sc, reg) & ~(x))
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#define SIO_SET(x) \
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CSR_WRITE_1(sc, VR_MIICMD, \
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CSR_READ_1(sc, VR_MIICMD) | (x))
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#define SIO_CLR(x) \
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CSR_WRITE_1(sc, VR_MIICMD, \
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CSR_READ_1(sc, VR_MIICMD) & ~(x))
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/*
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* Sync the PHYs by setting data bit and strobing the clock 32 times.
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*/
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static void
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vr_mii_sync(sc)
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struct vr_softc *sc;
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{
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register int i;
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SIO_SET(VR_MIICMD_DIR|VR_MIICMD_DATAIN);
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for (i = 0; i < 32; i++) {
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SIO_SET(VR_MIICMD_CLK);
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DELAY(1);
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SIO_CLR(VR_MIICMD_CLK);
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DELAY(1);
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}
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return;
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}
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/*
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* Clock a series of bits through the MII.
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*/
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static void
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vr_mii_send(sc, bits, cnt)
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struct vr_softc *sc;
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u_int32_t bits;
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int cnt;
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{
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int i;
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SIO_CLR(VR_MIICMD_CLK);
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for (i = (0x1 << (cnt - 1)); i; i >>= 1) {
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if (bits & i) {
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SIO_SET(VR_MIICMD_DATAIN);
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} else {
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SIO_CLR(VR_MIICMD_DATAIN);
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}
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DELAY(1);
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SIO_CLR(VR_MIICMD_CLK);
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DELAY(1);
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SIO_SET(VR_MIICMD_CLK);
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}
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}
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/*
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* Read an PHY register through the MII.
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*/
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static int
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vr_mii_readreg(sc, frame)
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struct vr_softc *sc;
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struct vr_mii_frame *frame;
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{
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int i, ack;
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VR_LOCK(sc);
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/*
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* Set up frame for RX.
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*/
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frame->mii_stdelim = VR_MII_STARTDELIM;
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frame->mii_opcode = VR_MII_READOP;
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frame->mii_turnaround = 0;
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frame->mii_data = 0;
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CSR_WRITE_1(sc, VR_MIICMD, 0);
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VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_DIRECTPGM);
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/*
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* Turn on data xmit.
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*/
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SIO_SET(VR_MIICMD_DIR);
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vr_mii_sync(sc);
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/*
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* Send command/address info.
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*/
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vr_mii_send(sc, frame->mii_stdelim, 2);
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vr_mii_send(sc, frame->mii_opcode, 2);
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vr_mii_send(sc, frame->mii_phyaddr, 5);
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vr_mii_send(sc, frame->mii_regaddr, 5);
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/* Idle bit */
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SIO_CLR((VR_MIICMD_CLK|VR_MIICMD_DATAIN));
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DELAY(1);
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SIO_SET(VR_MIICMD_CLK);
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DELAY(1);
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/* Turn off xmit. */
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SIO_CLR(VR_MIICMD_DIR);
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/* Check for ack */
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SIO_CLR(VR_MIICMD_CLK);
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DELAY(1);
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ack = CSR_READ_4(sc, VR_MIICMD) & VR_MIICMD_DATAOUT;
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SIO_SET(VR_MIICMD_CLK);
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DELAY(1);
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/*
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* Now try reading data bits. If the ack failed, we still
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* need to clock through 16 cycles to keep the PHY(s) in sync.
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*/
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if (ack) {
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for(i = 0; i < 16; i++) {
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SIO_CLR(VR_MIICMD_CLK);
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DELAY(1);
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SIO_SET(VR_MIICMD_CLK);
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DELAY(1);
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}
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goto fail;
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}
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for (i = 0x8000; i; i >>= 1) {
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SIO_CLR(VR_MIICMD_CLK);
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DELAY(1);
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if (!ack) {
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if (CSR_READ_4(sc, VR_MIICMD) & VR_MIICMD_DATAOUT)
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frame->mii_data |= i;
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DELAY(1);
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}
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SIO_SET(VR_MIICMD_CLK);
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DELAY(1);
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}
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fail:
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SIO_CLR(VR_MIICMD_CLK);
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DELAY(1);
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SIO_SET(VR_MIICMD_CLK);
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DELAY(1);
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VR_UNLOCK(sc);
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if (ack)
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return(1);
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return(0);
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}
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/*
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* Write to a PHY register through the MII.
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*/
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static int
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vr_mii_writereg(sc, frame)
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struct vr_softc *sc;
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struct vr_mii_frame *frame;
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{
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VR_LOCK(sc);
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CSR_WRITE_1(sc, VR_MIICMD, 0);
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VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_DIRECTPGM);
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/*
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* Set up frame for TX.
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*/
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frame->mii_stdelim = VR_MII_STARTDELIM;
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frame->mii_opcode = VR_MII_WRITEOP;
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frame->mii_turnaround = VR_MII_TURNAROUND;
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/*
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* Turn on data output.
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*/
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SIO_SET(VR_MIICMD_DIR);
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vr_mii_sync(sc);
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vr_mii_send(sc, frame->mii_stdelim, 2);
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vr_mii_send(sc, frame->mii_opcode, 2);
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vr_mii_send(sc, frame->mii_phyaddr, 5);
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vr_mii_send(sc, frame->mii_regaddr, 5);
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vr_mii_send(sc, frame->mii_turnaround, 2);
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vr_mii_send(sc, frame->mii_data, 16);
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/* Idle bit. */
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SIO_SET(VR_MIICMD_CLK);
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DELAY(1);
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SIO_CLR(VR_MIICMD_CLK);
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DELAY(1);
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/*
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* Turn off xmit.
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*/
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SIO_CLR(VR_MIICMD_DIR);
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VR_UNLOCK(sc);
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return(0);
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}
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static int
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vr_miibus_readreg(dev, phy, reg)
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device_t dev;
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int phy, reg;
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{
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struct vr_softc *sc;
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struct vr_mii_frame frame;
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sc = device_get_softc(dev);
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bzero((char *)&frame, sizeof(frame));
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frame.mii_phyaddr = phy;
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frame.mii_regaddr = reg;
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vr_mii_readreg(sc, &frame);
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return(frame.mii_data);
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}
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static int
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vr_miibus_writereg(dev, phy, reg, data)
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device_t dev;
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u_int16_t phy, reg, data;
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{
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struct vr_softc *sc;
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struct vr_mii_frame frame;
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sc = device_get_softc(dev);
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bzero((char *)&frame, sizeof(frame));
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frame.mii_phyaddr = phy;
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frame.mii_regaddr = reg;
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frame.mii_data = data;
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vr_mii_writereg(sc, &frame);
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return(0);
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}
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static void
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vr_miibus_statchg(dev)
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device_t dev;
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{
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struct vr_softc *sc;
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struct mii_data *mii;
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sc = device_get_softc(dev);
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VR_LOCK(sc);
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mii = device_get_softc(sc->vr_miibus);
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vr_setcfg(sc, mii->mii_media_active);
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VR_UNLOCK(sc);
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return;
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}
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/*
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* Calculate CRC of a multicast group address, return the lower 6 bits.
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*/
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static u_int8_t vr_calchash(addr)
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u_int8_t *addr;
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{
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u_int32_t crc, carry;
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int i, j;
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u_int8_t c;
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|
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/* Compute CRC for the address value. */
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crc = 0xFFFFFFFF; /* initial value */
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for (i = 0; i < 6; i++) {
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c = *(addr + i);
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for (j = 0; j < 8; j++) {
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carry = ((crc & 0x80000000) ? 1 : 0) ^ (c & 0x01);
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crc <<= 1;
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c >>= 1;
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if (carry)
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crc = (crc ^ 0x04c11db6) | carry;
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}
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}
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|
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/* return the filter bit position */
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return((crc >> 26) & 0x0000003F);
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}
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|
|
|
/*
|
|
* Program the 64-bit multicast hash filter.
|
|
*/
|
|
static void
|
|
vr_setmulti(sc)
|
|
struct vr_softc *sc;
|
|
{
|
|
struct ifnet *ifp;
|
|
int h = 0;
|
|
u_int32_t hashes[2] = { 0, 0 };
|
|
struct ifmultiaddr *ifma;
|
|
u_int8_t rxfilt;
|
|
int mcnt = 0;
|
|
|
|
ifp = &sc->arpcom.ac_if;
|
|
|
|
rxfilt = CSR_READ_1(sc, VR_RXCFG);
|
|
|
|
if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
|
|
rxfilt |= VR_RXCFG_RX_MULTI;
|
|
CSR_WRITE_1(sc, VR_RXCFG, rxfilt);
|
|
CSR_WRITE_4(sc, VR_MAR0, 0xFFFFFFFF);
|
|
CSR_WRITE_4(sc, VR_MAR1, 0xFFFFFFFF);
|
|
return;
|
|
}
|
|
|
|
/* first, zot all the existing hash bits */
|
|
CSR_WRITE_4(sc, VR_MAR0, 0);
|
|
CSR_WRITE_4(sc, VR_MAR1, 0);
|
|
|
|
/* now program new ones */
|
|
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
|
|
if (ifma->ifma_addr->sa_family != AF_LINK)
|
|
continue;
|
|
h = vr_calchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
|
|
if (h < 32)
|
|
hashes[0] |= (1 << h);
|
|
else
|
|
hashes[1] |= (1 << (h - 32));
|
|
mcnt++;
|
|
}
|
|
|
|
if (mcnt)
|
|
rxfilt |= VR_RXCFG_RX_MULTI;
|
|
else
|
|
rxfilt &= ~VR_RXCFG_RX_MULTI;
|
|
|
|
CSR_WRITE_4(sc, VR_MAR0, hashes[0]);
|
|
CSR_WRITE_4(sc, VR_MAR1, hashes[1]);
|
|
CSR_WRITE_1(sc, VR_RXCFG, rxfilt);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* In order to fiddle with the
|
|
* 'full-duplex' and '100Mbps' bits in the netconfig register, we
|
|
* first have to put the transmit and/or receive logic in the idle state.
|
|
*/
|
|
static void
|
|
vr_setcfg(sc, media)
|
|
struct vr_softc *sc;
|
|
int media;
|
|
{
|
|
int restart = 0;
|
|
|
|
if (CSR_READ_2(sc, VR_COMMAND) & (VR_CMD_TX_ON|VR_CMD_RX_ON)) {
|
|
restart = 1;
|
|
VR_CLRBIT16(sc, VR_COMMAND, (VR_CMD_TX_ON|VR_CMD_RX_ON));
|
|
}
|
|
|
|
if ((media & IFM_GMASK) == IFM_FDX)
|
|
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_FULLDUPLEX);
|
|
else
|
|
VR_CLRBIT16(sc, VR_COMMAND, VR_CMD_FULLDUPLEX);
|
|
|
|
if (restart)
|
|
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON|VR_CMD_RX_ON);
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
vr_reset(sc)
|
|
struct vr_softc *sc;
|
|
{
|
|
register int i;
|
|
|
|
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RESET);
|
|
|
|
for (i = 0; i < VR_TIMEOUT; i++) {
|
|
DELAY(10);
|
|
if (!(CSR_READ_2(sc, VR_COMMAND) & VR_CMD_RESET))
|
|
break;
|
|
}
|
|
if (i == VR_TIMEOUT) {
|
|
if (sc->vr_revid < REV_ID_VT3065_A)
|
|
printf("vr%d: reset never completed!\n", sc->vr_unit);
|
|
else {
|
|
/* Use newer force reset command */
|
|
printf("vr%d: Using force reset command.\n", sc->vr_unit);
|
|
VR_SETBIT(sc, VR_MISC_CR1, VR_MISCCR1_FORSRST);
|
|
}
|
|
}
|
|
|
|
/* Wait a little while for the chip to get its brains in order. */
|
|
DELAY(1000);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Probe for a VIA Rhine chip. Check the PCI vendor and device
|
|
* IDs against our list and return a device name if we find a match.
|
|
*/
|
|
static int
|
|
vr_probe(dev)
|
|
device_t dev;
|
|
{
|
|
struct vr_type *t;
|
|
|
|
t = vr_devs;
|
|
|
|
while(t->vr_name != NULL) {
|
|
if ((pci_get_vendor(dev) == t->vr_vid) &&
|
|
(pci_get_device(dev) == t->vr_did)) {
|
|
device_set_desc(dev, t->vr_name);
|
|
return(0);
|
|
}
|
|
t++;
|
|
}
|
|
|
|
return(ENXIO);
|
|
}
|
|
|
|
/*
|
|
* Attach the interface. Allocate softc structures, do ifmedia
|
|
* setup and ethernet/BPF attach.
|
|
*/
|
|
static int
|
|
vr_attach(dev)
|
|
device_t dev;
|
|
{
|
|
int i;
|
|
u_char eaddr[ETHER_ADDR_LEN];
|
|
u_int32_t command;
|
|
struct vr_softc *sc;
|
|
struct ifnet *ifp;
|
|
int unit, error = 0, rid;
|
|
|
|
sc = device_get_softc(dev);
|
|
unit = device_get_unit(dev);
|
|
bzero(sc, sizeof(struct vr_softc *));
|
|
|
|
mtx_init(&sc->vr_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
|
|
MTX_DEF | MTX_RECURSE);
|
|
VR_LOCK(sc);
|
|
|
|
/*
|
|
* Handle power management nonsense.
|
|
*/
|
|
if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
|
|
u_int32_t iobase, membase, irq;
|
|
|
|
/* Save important PCI config data. */
|
|
iobase = pci_read_config(dev, VR_PCI_LOIO, 4);
|
|
membase = pci_read_config(dev, VR_PCI_LOMEM, 4);
|
|
irq = pci_read_config(dev, VR_PCI_INTLINE, 4);
|
|
|
|
/* Reset the power state. */
|
|
printf("vr%d: chip is in D%d power mode "
|
|
"-- setting to D0\n", unit,
|
|
pci_get_powerstate(dev));
|
|
pci_set_powerstate(dev, PCI_POWERSTATE_D0);
|
|
|
|
/* Restore PCI config data. */
|
|
pci_write_config(dev, VR_PCI_LOIO, iobase, 4);
|
|
pci_write_config(dev, VR_PCI_LOMEM, membase, 4);
|
|
pci_write_config(dev, VR_PCI_INTLINE, irq, 4);
|
|
}
|
|
|
|
/*
|
|
* Map control/status registers.
|
|
*/
|
|
pci_enable_busmaster(dev);
|
|
pci_enable_io(dev, SYS_RES_IOPORT);
|
|
pci_enable_io(dev, SYS_RES_MEMORY);
|
|
command = pci_read_config(dev, PCIR_COMMAND, 4);
|
|
sc->vr_revid = pci_read_config(dev, VR_PCI_REVID, 4) & 0x000000FF;
|
|
|
|
#ifdef VR_USEIOSPACE
|
|
if (!(command & PCIM_CMD_PORTEN)) {
|
|
printf("vr%d: failed to enable I/O ports!\n", unit);
|
|
free(sc, M_DEVBUF);
|
|
goto fail;
|
|
}
|
|
#else
|
|
if (!(command & PCIM_CMD_MEMEN)) {
|
|
printf("vr%d: failed to enable memory mapping!\n", unit);
|
|
goto fail;
|
|
}
|
|
#endif
|
|
|
|
rid = VR_RID;
|
|
sc->vr_res = bus_alloc_resource(dev, VR_RES, &rid,
|
|
0, ~0, 1, RF_ACTIVE);
|
|
|
|
if (sc->vr_res == NULL) {
|
|
printf("vr%d: couldn't map ports/memory\n", unit);
|
|
error = ENXIO;
|
|
goto fail;
|
|
}
|
|
|
|
sc->vr_btag = rman_get_bustag(sc->vr_res);
|
|
sc->vr_bhandle = rman_get_bushandle(sc->vr_res);
|
|
|
|
/* Allocate interrupt */
|
|
rid = 0;
|
|
sc->vr_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
|
|
RF_SHAREABLE | RF_ACTIVE);
|
|
|
|
if (sc->vr_irq == NULL) {
|
|
printf("vr%d: couldn't map interrupt\n", unit);
|
|
bus_release_resource(dev, VR_RES, VR_RID, sc->vr_res);
|
|
error = ENXIO;
|
|
goto fail;
|
|
}
|
|
|
|
error = bus_setup_intr(dev, sc->vr_irq, INTR_TYPE_NET,
|
|
vr_intr, sc, &sc->vr_intrhand);
|
|
|
|
if (error) {
|
|
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->vr_irq);
|
|
bus_release_resource(dev, VR_RES, VR_RID, sc->vr_res);
|
|
printf("vr%d: couldn't set up irq\n", unit);
|
|
goto fail;
|
|
}
|
|
|
|
/*
|
|
* Windows may put the chip in suspend mode when it
|
|
* shuts down. Be sure to kick it in the head to wake it
|
|
* up again.
|
|
*/
|
|
VR_CLRBIT(sc, VR_STICKHW, (VR_STICKHW_DS0|VR_STICKHW_DS1));
|
|
|
|
/* Reset the adapter. */
|
|
vr_reset(sc);
|
|
|
|
/*
|
|
* Get station address. The way the Rhine chips work,
|
|
* you're not allowed to directly access the EEPROM once
|
|
* they've been programmed a special way. Consequently,
|
|
* we need to read the node address from the PAR0 and PAR1
|
|
* registers.
|
|
*/
|
|
VR_SETBIT(sc, VR_EECSR, VR_EECSR_LOAD);
|
|
DELAY(200);
|
|
for (i = 0; i < ETHER_ADDR_LEN; i++)
|
|
eaddr[i] = CSR_READ_1(sc, VR_PAR0 + i);
|
|
|
|
/*
|
|
* A Rhine chip was detected. Inform the world.
|
|
*/
|
|
printf("vr%d: Ethernet address: %6D\n", unit, eaddr, ":");
|
|
|
|
sc->vr_unit = unit;
|
|
bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
|
|
|
|
sc->vr_ldata = contigmalloc(sizeof(struct vr_list_data), M_DEVBUF,
|
|
M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0);
|
|
|
|
if (sc->vr_ldata == NULL) {
|
|
printf("vr%d: no memory for list buffers!\n", unit);
|
|
bus_teardown_intr(dev, sc->vr_irq, sc->vr_intrhand);
|
|
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->vr_irq);
|
|
bus_release_resource(dev, VR_RES, VR_RID, sc->vr_res);
|
|
error = ENXIO;
|
|
goto fail;
|
|
}
|
|
|
|
bzero(sc->vr_ldata, sizeof(struct vr_list_data));
|
|
|
|
ifp = &sc->arpcom.ac_if;
|
|
ifp->if_softc = sc;
|
|
ifp->if_unit = unit;
|
|
ifp->if_name = "vr";
|
|
ifp->if_mtu = ETHERMTU;
|
|
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
|
|
ifp->if_ioctl = vr_ioctl;
|
|
ifp->if_output = ether_output;
|
|
ifp->if_start = vr_start;
|
|
ifp->if_watchdog = vr_watchdog;
|
|
ifp->if_init = vr_init;
|
|
ifp->if_baudrate = 10000000;
|
|
ifp->if_snd.ifq_maxlen = VR_TX_LIST_CNT - 1;
|
|
|
|
/*
|
|
* Do MII setup.
|
|
*/
|
|
if (mii_phy_probe(dev, &sc->vr_miibus,
|
|
vr_ifmedia_upd, vr_ifmedia_sts)) {
|
|
printf("vr%d: MII without any phy!\n", sc->vr_unit);
|
|
bus_teardown_intr(dev, sc->vr_irq, sc->vr_intrhand);
|
|
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->vr_irq);
|
|
bus_release_resource(dev, VR_RES, VR_RID, sc->vr_res);
|
|
contigfree(sc->vr_ldata,
|
|
sizeof(struct vr_list_data), M_DEVBUF);
|
|
error = ENXIO;
|
|
goto fail;
|
|
}
|
|
|
|
callout_handle_init(&sc->vr_stat_ch);
|
|
|
|
/*
|
|
* Call MI attach routine.
|
|
*/
|
|
ether_ifattach(ifp, eaddr);
|
|
VR_UNLOCK(sc);
|
|
return(0);
|
|
|
|
fail:
|
|
VR_UNLOCK(sc);
|
|
mtx_destroy(&sc->vr_mtx);
|
|
|
|
return(error);
|
|
}
|
|
|
|
static int
|
|
vr_detach(dev)
|
|
device_t dev;
|
|
{
|
|
struct vr_softc *sc;
|
|
struct ifnet *ifp;
|
|
|
|
sc = device_get_softc(dev);
|
|
VR_LOCK(sc);
|
|
ifp = &sc->arpcom.ac_if;
|
|
|
|
vr_stop(sc);
|
|
ether_ifdetach(ifp);
|
|
|
|
bus_generic_detach(dev);
|
|
device_delete_child(dev, sc->vr_miibus);
|
|
|
|
bus_teardown_intr(dev, sc->vr_irq, sc->vr_intrhand);
|
|
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->vr_irq);
|
|
bus_release_resource(dev, VR_RES, VR_RID, sc->vr_res);
|
|
|
|
contigfree(sc->vr_ldata, sizeof(struct vr_list_data), M_DEVBUF);
|
|
|
|
VR_UNLOCK(sc);
|
|
mtx_destroy(&sc->vr_mtx);
|
|
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Initialize the transmit descriptors.
|
|
*/
|
|
static int
|
|
vr_list_tx_init(sc)
|
|
struct vr_softc *sc;
|
|
{
|
|
struct vr_chain_data *cd;
|
|
struct vr_list_data *ld;
|
|
int i;
|
|
|
|
cd = &sc->vr_cdata;
|
|
ld = sc->vr_ldata;
|
|
for (i = 0; i < VR_TX_LIST_CNT; i++) {
|
|
cd->vr_tx_chain[i].vr_ptr = &ld->vr_tx_list[i];
|
|
if (i == (VR_TX_LIST_CNT - 1))
|
|
cd->vr_tx_chain[i].vr_nextdesc =
|
|
&cd->vr_tx_chain[0];
|
|
else
|
|
cd->vr_tx_chain[i].vr_nextdesc =
|
|
&cd->vr_tx_chain[i + 1];
|
|
}
|
|
|
|
cd->vr_tx_free = &cd->vr_tx_chain[0];
|
|
cd->vr_tx_tail = cd->vr_tx_head = NULL;
|
|
|
|
return(0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Initialize the RX descriptors and allocate mbufs for them. Note that
|
|
* we arrange the descriptors in a closed ring, so that the last descriptor
|
|
* points back to the first.
|
|
*/
|
|
static int
|
|
vr_list_rx_init(sc)
|
|
struct vr_softc *sc;
|
|
{
|
|
struct vr_chain_data *cd;
|
|
struct vr_list_data *ld;
|
|
int i;
|
|
|
|
cd = &sc->vr_cdata;
|
|
ld = sc->vr_ldata;
|
|
|
|
for (i = 0; i < VR_RX_LIST_CNT; i++) {
|
|
cd->vr_rx_chain[i].vr_ptr =
|
|
(struct vr_desc *)&ld->vr_rx_list[i];
|
|
if (vr_newbuf(sc, &cd->vr_rx_chain[i], NULL) == ENOBUFS)
|
|
return(ENOBUFS);
|
|
if (i == (VR_RX_LIST_CNT - 1)) {
|
|
cd->vr_rx_chain[i].vr_nextdesc =
|
|
&cd->vr_rx_chain[0];
|
|
ld->vr_rx_list[i].vr_next =
|
|
vtophys(&ld->vr_rx_list[0]);
|
|
} else {
|
|
cd->vr_rx_chain[i].vr_nextdesc =
|
|
&cd->vr_rx_chain[i + 1];
|
|
ld->vr_rx_list[i].vr_next =
|
|
vtophys(&ld->vr_rx_list[i + 1]);
|
|
}
|
|
}
|
|
|
|
cd->vr_rx_head = &cd->vr_rx_chain[0];
|
|
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Initialize an RX descriptor and attach an MBUF cluster.
|
|
* Note: the length fields are only 11 bits wide, which means the
|
|
* largest size we can specify is 2047. This is important because
|
|
* MCLBYTES is 2048, so we have to subtract one otherwise we'll
|
|
* overflow the field and make a mess.
|
|
*/
|
|
static int
|
|
vr_newbuf(sc, c, m)
|
|
struct vr_softc *sc;
|
|
struct vr_chain_onefrag *c;
|
|
struct mbuf *m;
|
|
{
|
|
struct mbuf *m_new = NULL;
|
|
|
|
if (m == NULL) {
|
|
MGETHDR(m_new, M_NOWAIT, MT_DATA);
|
|
if (m_new == NULL)
|
|
return(ENOBUFS);
|
|
|
|
MCLGET(m_new, M_NOWAIT);
|
|
if (!(m_new->m_flags & M_EXT)) {
|
|
m_freem(m_new);
|
|
return(ENOBUFS);
|
|
}
|
|
m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
|
|
} else {
|
|
m_new = m;
|
|
m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
|
|
m_new->m_data = m_new->m_ext.ext_buf;
|
|
}
|
|
|
|
m_adj(m_new, sizeof(u_int64_t));
|
|
|
|
c->vr_mbuf = m_new;
|
|
c->vr_ptr->vr_status = VR_RXSTAT;
|
|
c->vr_ptr->vr_data = vtophys(mtod(m_new, caddr_t));
|
|
c->vr_ptr->vr_ctl = VR_RXCTL | VR_RXLEN;
|
|
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* A frame has been uploaded: pass the resulting mbuf chain up to
|
|
* the higher level protocols.
|
|
*/
|
|
static void
|
|
vr_rxeof(sc)
|
|
struct vr_softc *sc;
|
|
{
|
|
struct mbuf *m;
|
|
struct ifnet *ifp;
|
|
struct vr_chain_onefrag *cur_rx;
|
|
int total_len = 0;
|
|
u_int32_t rxstat;
|
|
|
|
ifp = &sc->arpcom.ac_if;
|
|
|
|
while(!((rxstat = sc->vr_cdata.vr_rx_head->vr_ptr->vr_status) &
|
|
VR_RXSTAT_OWN)) {
|
|
struct mbuf *m0 = NULL;
|
|
|
|
cur_rx = sc->vr_cdata.vr_rx_head;
|
|
sc->vr_cdata.vr_rx_head = cur_rx->vr_nextdesc;
|
|
m = cur_rx->vr_mbuf;
|
|
|
|
/*
|
|
* If an error occurs, update stats, clear the
|
|
* status word and leave the mbuf cluster in place:
|
|
* it should simply get re-used next time this descriptor
|
|
* comes up in the ring.
|
|
*/
|
|
if (rxstat & VR_RXSTAT_RXERR) {
|
|
ifp->if_ierrors++;
|
|
printf("vr%d: rx error: ", sc->vr_unit);
|
|
switch(rxstat & 0x000000FF) {
|
|
case VR_RXSTAT_CRCERR:
|
|
printf("crc error\n");
|
|
break;
|
|
case VR_RXSTAT_FRAMEALIGNERR:
|
|
printf("frame alignment error\n");
|
|
break;
|
|
case VR_RXSTAT_FIFOOFLOW:
|
|
printf("FIFO overflow\n");
|
|
break;
|
|
case VR_RXSTAT_GIANT:
|
|
printf("received giant packet\n");
|
|
break;
|
|
case VR_RXSTAT_RUNT:
|
|
printf("received runt packet\n");
|
|
break;
|
|
case VR_RXSTAT_BUSERR:
|
|
printf("system bus error\n");
|
|
break;
|
|
case VR_RXSTAT_BUFFERR:
|
|
printf("rx buffer error\n");
|
|
break;
|
|
default:
|
|
printf("unknown rx error\n");
|
|
break;
|
|
}
|
|
vr_newbuf(sc, cur_rx, m);
|
|
continue;
|
|
}
|
|
|
|
/* No errors; receive the packet. */
|
|
total_len = VR_RXBYTES(cur_rx->vr_ptr->vr_status);
|
|
|
|
/*
|
|
* XXX The VIA Rhine chip includes the CRC with every
|
|
* received frame, and there's no way to turn this
|
|
* behavior off (at least, I can't find anything in
|
|
* the manual that explains how to do it) so we have
|
|
* to trim off the CRC manually.
|
|
*/
|
|
total_len -= ETHER_CRC_LEN;
|
|
|
|
m0 = m_devget(mtod(m, char *), total_len, ETHER_ALIGN, ifp,
|
|
NULL);
|
|
vr_newbuf(sc, cur_rx, m);
|
|
if (m0 == NULL) {
|
|
ifp->if_ierrors++;
|
|
continue;
|
|
}
|
|
m = m0;
|
|
|
|
ifp->if_ipackets++;
|
|
(*ifp->if_input)(ifp, m);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
vr_rxeoc(sc)
|
|
struct vr_softc *sc;
|
|
{
|
|
|
|
vr_rxeof(sc);
|
|
VR_CLRBIT16(sc, VR_COMMAND, VR_CMD_RX_ON);
|
|
CSR_WRITE_4(sc, VR_RXADDR, vtophys(sc->vr_cdata.vr_rx_head->vr_ptr));
|
|
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RX_ON);
|
|
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RX_GO);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* A frame was downloaded to the chip. It's safe for us to clean up
|
|
* the list buffers.
|
|
*/
|
|
|
|
static void
|
|
vr_txeof(sc)
|
|
struct vr_softc *sc;
|
|
{
|
|
struct vr_chain *cur_tx;
|
|
struct ifnet *ifp;
|
|
|
|
ifp = &sc->arpcom.ac_if;
|
|
|
|
/* Reset the timeout timer; if_txeoc will clear it. */
|
|
ifp->if_timer = 5;
|
|
|
|
/* Sanity check. */
|
|
if (sc->vr_cdata.vr_tx_head == NULL)
|
|
return;
|
|
|
|
/*
|
|
* Go through our tx list and free mbufs for those
|
|
* frames that have been transmitted.
|
|
*/
|
|
while(sc->vr_cdata.vr_tx_head->vr_mbuf != NULL) {
|
|
u_int32_t txstat;
|
|
|
|
cur_tx = sc->vr_cdata.vr_tx_head;
|
|
txstat = cur_tx->vr_ptr->vr_status;
|
|
|
|
if ((txstat & VR_TXSTAT_ABRT) ||
|
|
(txstat & VR_TXSTAT_UDF)) {
|
|
while (CSR_READ_2(sc, VR_COMMAND) & VR_CMD_TX_ON)
|
|
; /* Wait for chip to shutdown */
|
|
VR_TXOWN(cur_tx) = VR_TXSTAT_OWN;
|
|
CSR_WRITE_4(sc, VR_TXADDR, vtophys(cur_tx->vr_ptr));
|
|
break;
|
|
}
|
|
|
|
if (txstat & VR_TXSTAT_OWN)
|
|
break;
|
|
|
|
if (txstat & VR_TXSTAT_ERRSUM) {
|
|
ifp->if_oerrors++;
|
|
if (txstat & VR_TXSTAT_DEFER)
|
|
ifp->if_collisions++;
|
|
if (txstat & VR_TXSTAT_LATECOLL)
|
|
ifp->if_collisions++;
|
|
}
|
|
|
|
ifp->if_collisions +=(txstat & VR_TXSTAT_COLLCNT) >> 3;
|
|
|
|
ifp->if_opackets++;
|
|
if (cur_tx->vr_mbuf != NULL) {
|
|
m_freem(cur_tx->vr_mbuf);
|
|
cur_tx->vr_mbuf = NULL;
|
|
}
|
|
|
|
if (sc->vr_cdata.vr_tx_head == sc->vr_cdata.vr_tx_tail) {
|
|
sc->vr_cdata.vr_tx_head = NULL;
|
|
sc->vr_cdata.vr_tx_tail = NULL;
|
|
break;
|
|
}
|
|
|
|
sc->vr_cdata.vr_tx_head = cur_tx->vr_nextdesc;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* TX 'end of channel' interrupt handler.
|
|
*/
|
|
static void
|
|
vr_txeoc(sc)
|
|
struct vr_softc *sc;
|
|
{
|
|
struct ifnet *ifp;
|
|
|
|
ifp = &sc->arpcom.ac_if;
|
|
|
|
if (sc->vr_cdata.vr_tx_head == NULL) {
|
|
ifp->if_flags &= ~IFF_OACTIVE;
|
|
sc->vr_cdata.vr_tx_tail = NULL;
|
|
ifp->if_timer = 0;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
vr_tick(xsc)
|
|
void *xsc;
|
|
{
|
|
struct vr_softc *sc;
|
|
struct mii_data *mii;
|
|
|
|
sc = xsc;
|
|
VR_LOCK(sc);
|
|
mii = device_get_softc(sc->vr_miibus);
|
|
mii_tick(mii);
|
|
|
|
sc->vr_stat_ch = timeout(vr_tick, sc, hz);
|
|
|
|
VR_UNLOCK(sc);
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
vr_intr(arg)
|
|
void *arg;
|
|
{
|
|
struct vr_softc *sc;
|
|
struct ifnet *ifp;
|
|
u_int16_t status;
|
|
|
|
sc = arg;
|
|
VR_LOCK(sc);
|
|
ifp = &sc->arpcom.ac_if;
|
|
|
|
/* Supress unwanted interrupts. */
|
|
if (!(ifp->if_flags & IFF_UP)) {
|
|
vr_stop(sc);
|
|
VR_UNLOCK(sc);
|
|
return;
|
|
}
|
|
|
|
/* Disable interrupts. */
|
|
CSR_WRITE_2(sc, VR_IMR, 0x0000);
|
|
|
|
for (;;) {
|
|
|
|
status = CSR_READ_2(sc, VR_ISR);
|
|
if (status)
|
|
CSR_WRITE_2(sc, VR_ISR, status);
|
|
|
|
if ((status & VR_INTRS) == 0)
|
|
break;
|
|
|
|
if (status & VR_ISR_RX_OK)
|
|
vr_rxeof(sc);
|
|
|
|
if ((status & VR_ISR_RX_ERR) || (status & VR_ISR_RX_NOBUF) ||
|
|
(status & VR_ISR_RX_NOBUF) || (status & VR_ISR_RX_OFLOW) ||
|
|
(status & VR_ISR_RX_DROPPED)) {
|
|
vr_rxeof(sc);
|
|
vr_rxeoc(sc);
|
|
}
|
|
|
|
if ((status & VR_ISR_BUSERR) || (status & VR_ISR_TX_UNDERRUN)) {
|
|
vr_reset(sc);
|
|
vr_init(sc);
|
|
break;
|
|
}
|
|
|
|
if ((status & VR_ISR_TX_OK) || (status & VR_ISR_TX_ABRT) ||
|
|
(status & VR_ISR_TX_ABRT2) || (status & VR_ISR_UDFI)) {
|
|
vr_txeof(sc);
|
|
if ((status & VR_ISR_UDFI) ||
|
|
(status & VR_ISR_TX_ABRT2) ||
|
|
(status & VR_ISR_TX_ABRT)) {
|
|
ifp->if_oerrors++;
|
|
if (sc->vr_cdata.vr_tx_head != NULL) {
|
|
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON);
|
|
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_GO);
|
|
}
|
|
} else
|
|
vr_txeoc(sc);
|
|
}
|
|
|
|
}
|
|
|
|
/* Re-enable interrupts. */
|
|
CSR_WRITE_2(sc, VR_IMR, VR_INTRS);
|
|
|
|
if (ifp->if_snd.ifq_head != NULL) {
|
|
vr_start(ifp);
|
|
}
|
|
|
|
VR_UNLOCK(sc);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Encapsulate an mbuf chain in a descriptor by coupling the mbuf data
|
|
* pointers to the fragment pointers.
|
|
*/
|
|
static int
|
|
vr_encap(sc, c, m_head)
|
|
struct vr_softc *sc;
|
|
struct vr_chain *c;
|
|
struct mbuf *m_head;
|
|
{
|
|
int frag = 0;
|
|
struct vr_desc *f = NULL;
|
|
int total_len;
|
|
struct mbuf *m;
|
|
|
|
m = m_head;
|
|
total_len = 0;
|
|
|
|
/*
|
|
* The VIA Rhine wants packet buffers to be longword
|
|
* aligned, but very often our mbufs aren't. Rather than
|
|
* waste time trying to decide when to copy and when not
|
|
* to copy, just do it all the time.
|
|
*/
|
|
if (m != NULL) {
|
|
struct mbuf *m_new = NULL;
|
|
|
|
MGETHDR(m_new, M_NOWAIT, MT_DATA);
|
|
if (m_new == NULL) {
|
|
printf("vr%d: no memory for tx list\n", sc->vr_unit);
|
|
return(1);
|
|
}
|
|
if (m_head->m_pkthdr.len > MHLEN) {
|
|
MCLGET(m_new, M_NOWAIT);
|
|
if (!(m_new->m_flags & M_EXT)) {
|
|
m_freem(m_new);
|
|
printf("vr%d: no memory for tx list\n",
|
|
sc->vr_unit);
|
|
return(1);
|
|
}
|
|
}
|
|
m_copydata(m_head, 0, m_head->m_pkthdr.len,
|
|
mtod(m_new, caddr_t));
|
|
m_new->m_pkthdr.len = m_new->m_len = m_head->m_pkthdr.len;
|
|
m_freem(m_head);
|
|
m_head = m_new;
|
|
/*
|
|
* The Rhine chip doesn't auto-pad, so we have to make
|
|
* sure to pad short frames out to the minimum frame length
|
|
* ourselves.
|
|
*/
|
|
if (m_head->m_len < VR_MIN_FRAMELEN) {
|
|
m_new->m_pkthdr.len += VR_MIN_FRAMELEN - m_new->m_len;
|
|
m_new->m_len = m_new->m_pkthdr.len;
|
|
}
|
|
f = c->vr_ptr;
|
|
f->vr_data = vtophys(mtod(m_new, caddr_t));
|
|
f->vr_ctl = total_len = m_new->m_len;
|
|
f->vr_ctl |= VR_TXCTL_TLINK|VR_TXCTL_FIRSTFRAG;
|
|
f->vr_status = 0;
|
|
frag = 1;
|
|
}
|
|
|
|
c->vr_mbuf = m_head;
|
|
c->vr_ptr->vr_ctl |= VR_TXCTL_LASTFRAG|VR_TXCTL_FINT;
|
|
c->vr_ptr->vr_next = vtophys(c->vr_nextdesc->vr_ptr);
|
|
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Main transmit routine. To avoid having to do mbuf copies, we put pointers
|
|
* to the mbuf data regions directly in the transmit lists. We also save a
|
|
* copy of the pointers since the transmit list fragment pointers are
|
|
* physical addresses.
|
|
*/
|
|
|
|
static void
|
|
vr_start(ifp)
|
|
struct ifnet *ifp;
|
|
{
|
|
struct vr_softc *sc;
|
|
struct mbuf *m_head = NULL;
|
|
struct vr_chain *cur_tx = NULL, *start_tx;
|
|
|
|
sc = ifp->if_softc;
|
|
|
|
VR_LOCK(sc);
|
|
if (ifp->if_flags & IFF_OACTIVE) {
|
|
VR_UNLOCK(sc);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Check for an available queue slot. If there are none,
|
|
* punt.
|
|
*/
|
|
if (sc->vr_cdata.vr_tx_free->vr_mbuf != NULL) {
|
|
ifp->if_flags |= IFF_OACTIVE;
|
|
return;
|
|
}
|
|
|
|
start_tx = sc->vr_cdata.vr_tx_free;
|
|
|
|
while(sc->vr_cdata.vr_tx_free->vr_mbuf == NULL) {
|
|
IF_DEQUEUE(&ifp->if_snd, m_head);
|
|
if (m_head == NULL)
|
|
break;
|
|
|
|
/* Pick a descriptor off the free list. */
|
|
cur_tx = sc->vr_cdata.vr_tx_free;
|
|
sc->vr_cdata.vr_tx_free = cur_tx->vr_nextdesc;
|
|
|
|
/* Pack the data into the descriptor. */
|
|
if (vr_encap(sc, cur_tx, m_head)) {
|
|
IF_PREPEND(&ifp->if_snd, m_head);
|
|
ifp->if_flags |= IFF_OACTIVE;
|
|
cur_tx = NULL;
|
|
break;
|
|
}
|
|
|
|
if (cur_tx != start_tx)
|
|
VR_TXOWN(cur_tx) = VR_TXSTAT_OWN;
|
|
|
|
/*
|
|
* If there's a BPF listener, bounce a copy of this frame
|
|
* to him.
|
|
*/
|
|
BPF_MTAP(ifp, cur_tx->vr_mbuf);
|
|
|
|
VR_TXOWN(cur_tx) = VR_TXSTAT_OWN;
|
|
VR_SETBIT16(sc, VR_COMMAND, /*VR_CMD_TX_ON|*/VR_CMD_TX_GO);
|
|
}
|
|
|
|
/*
|
|
* If there are no frames queued, bail.
|
|
*/
|
|
if (cur_tx == NULL) {
|
|
VR_UNLOCK(sc);
|
|
return;
|
|
}
|
|
|
|
sc->vr_cdata.vr_tx_tail = cur_tx;
|
|
|
|
if (sc->vr_cdata.vr_tx_head == NULL)
|
|
sc->vr_cdata.vr_tx_head = start_tx;
|
|
|
|
/*
|
|
* Set a timeout in case the chip goes out to lunch.
|
|
*/
|
|
ifp->if_timer = 5;
|
|
VR_UNLOCK(sc);
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
vr_init(xsc)
|
|
void *xsc;
|
|
{
|
|
struct vr_softc *sc = xsc;
|
|
struct ifnet *ifp = &sc->arpcom.ac_if;
|
|
struct mii_data *mii;
|
|
int i;
|
|
|
|
VR_LOCK(sc);
|
|
|
|
mii = device_get_softc(sc->vr_miibus);
|
|
|
|
/*
|
|
* Cancel pending I/O and free all RX/TX buffers.
|
|
*/
|
|
vr_stop(sc);
|
|
vr_reset(sc);
|
|
|
|
/*
|
|
* Set our station address.
|
|
*/
|
|
for (i = 0; i < ETHER_ADDR_LEN; i++)
|
|
CSR_WRITE_1(sc, VR_PAR0 + i, sc->arpcom.ac_enaddr[i]);
|
|
|
|
/* Set DMA size */
|
|
VR_CLRBIT(sc, VR_BCR0, VR_BCR0_DMA_LENGTH);
|
|
VR_SETBIT(sc, VR_BCR0, VR_BCR0_DMA_STORENFWD);
|
|
|
|
/*
|
|
* BCR0 and BCR1 can override the RXCFG and TXCFG registers,
|
|
* so we must set both.
|
|
*/
|
|
VR_CLRBIT(sc, VR_BCR0, VR_BCR0_RX_THRESH);
|
|
VR_SETBIT(sc, VR_BCR0, VR_BCR0_RXTHRESHSTORENFWD);
|
|
|
|
VR_CLRBIT(sc, VR_BCR1, VR_BCR1_TX_THRESH);
|
|
VR_SETBIT(sc, VR_BCR1, VR_BCR1_TXTHRESHSTORENFWD);
|
|
|
|
VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_THRESH);
|
|
VR_SETBIT(sc, VR_RXCFG, VR_RXTHRESH_STORENFWD);
|
|
|
|
VR_CLRBIT(sc, VR_TXCFG, VR_TXCFG_TX_THRESH);
|
|
VR_SETBIT(sc, VR_TXCFG, VR_TXTHRESH_STORENFWD);
|
|
|
|
/* Init circular RX list. */
|
|
if (vr_list_rx_init(sc) == ENOBUFS) {
|
|
printf("vr%d: initialization failed: no "
|
|
"memory for rx buffers\n", sc->vr_unit);
|
|
vr_stop(sc);
|
|
VR_UNLOCK(sc);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Init tx descriptors.
|
|
*/
|
|
vr_list_tx_init(sc);
|
|
|
|
/* If we want promiscuous mode, set the allframes bit. */
|
|
if (ifp->if_flags & IFF_PROMISC)
|
|
VR_SETBIT(sc, VR_RXCFG, VR_RXCFG_RX_PROMISC);
|
|
else
|
|
VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_PROMISC);
|
|
|
|
/* Set capture broadcast bit to capture broadcast frames. */
|
|
if (ifp->if_flags & IFF_BROADCAST)
|
|
VR_SETBIT(sc, VR_RXCFG, VR_RXCFG_RX_BROAD);
|
|
else
|
|
VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_BROAD);
|
|
|
|
/*
|
|
* Program the multicast filter, if necessary.
|
|
*/
|
|
vr_setmulti(sc);
|
|
|
|
/*
|
|
* Load the address of the RX list.
|
|
*/
|
|
CSR_WRITE_4(sc, VR_RXADDR, vtophys(sc->vr_cdata.vr_rx_head->vr_ptr));
|
|
|
|
/* Enable receiver and transmitter. */
|
|
CSR_WRITE_2(sc, VR_COMMAND, VR_CMD_TX_NOPOLL|VR_CMD_START|
|
|
VR_CMD_TX_ON|VR_CMD_RX_ON|
|
|
VR_CMD_RX_GO);
|
|
|
|
CSR_WRITE_4(sc, VR_TXADDR, vtophys(&sc->vr_ldata->vr_tx_list[0]));
|
|
|
|
/*
|
|
* Enable interrupts.
|
|
*/
|
|
CSR_WRITE_2(sc, VR_ISR, 0xFFFF);
|
|
CSR_WRITE_2(sc, VR_IMR, VR_INTRS);
|
|
|
|
mii_mediachg(mii);
|
|
|
|
ifp->if_flags |= IFF_RUNNING;
|
|
ifp->if_flags &= ~IFF_OACTIVE;
|
|
|
|
sc->vr_stat_ch = timeout(vr_tick, sc, hz);
|
|
|
|
VR_UNLOCK(sc);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Set media options.
|
|
*/
|
|
static int
|
|
vr_ifmedia_upd(ifp)
|
|
struct ifnet *ifp;
|
|
{
|
|
struct vr_softc *sc;
|
|
|
|
sc = ifp->if_softc;
|
|
|
|
if (ifp->if_flags & IFF_UP)
|
|
vr_init(sc);
|
|
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Report current media status.
|
|
*/
|
|
static void
|
|
vr_ifmedia_sts(ifp, ifmr)
|
|
struct ifnet *ifp;
|
|
struct ifmediareq *ifmr;
|
|
{
|
|
struct vr_softc *sc;
|
|
struct mii_data *mii;
|
|
|
|
sc = ifp->if_softc;
|
|
mii = device_get_softc(sc->vr_miibus);
|
|
mii_pollstat(mii);
|
|
ifmr->ifm_active = mii->mii_media_active;
|
|
ifmr->ifm_status = mii->mii_media_status;
|
|
|
|
return;
|
|
}
|
|
|
|
static int
|
|
vr_ioctl(ifp, command, data)
|
|
struct ifnet *ifp;
|
|
u_long command;
|
|
caddr_t data;
|
|
{
|
|
struct vr_softc *sc = ifp->if_softc;
|
|
struct ifreq *ifr = (struct ifreq *) data;
|
|
struct mii_data *mii;
|
|
int error = 0;
|
|
|
|
VR_LOCK(sc);
|
|
|
|
switch(command) {
|
|
case SIOCSIFFLAGS:
|
|
if (ifp->if_flags & IFF_UP) {
|
|
vr_init(sc);
|
|
} else {
|
|
if (ifp->if_flags & IFF_RUNNING)
|
|
vr_stop(sc);
|
|
}
|
|
error = 0;
|
|
break;
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
vr_setmulti(sc);
|
|
error = 0;
|
|
break;
|
|
case SIOCGIFMEDIA:
|
|
case SIOCSIFMEDIA:
|
|
mii = device_get_softc(sc->vr_miibus);
|
|
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
|
|
break;
|
|
default:
|
|
error = ether_ioctl(ifp, command, data);
|
|
break;
|
|
}
|
|
|
|
VR_UNLOCK(sc);
|
|
|
|
return(error);
|
|
}
|
|
|
|
static void
|
|
vr_watchdog(ifp)
|
|
struct ifnet *ifp;
|
|
{
|
|
struct vr_softc *sc;
|
|
|
|
sc = ifp->if_softc;
|
|
|
|
VR_LOCK(sc);
|
|
ifp->if_oerrors++;
|
|
printf("vr%d: watchdog timeout\n", sc->vr_unit);
|
|
|
|
vr_stop(sc);
|
|
vr_reset(sc);
|
|
vr_init(sc);
|
|
|
|
if (ifp->if_snd.ifq_head != NULL)
|
|
vr_start(ifp);
|
|
|
|
VR_UNLOCK(sc);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Stop the adapter and free any mbufs allocated to the
|
|
* RX and TX lists.
|
|
*/
|
|
static void
|
|
vr_stop(sc)
|
|
struct vr_softc *sc;
|
|
{
|
|
register int i;
|
|
struct ifnet *ifp;
|
|
|
|
VR_LOCK(sc);
|
|
|
|
ifp = &sc->arpcom.ac_if;
|
|
ifp->if_timer = 0;
|
|
|
|
untimeout(vr_tick, sc, sc->vr_stat_ch);
|
|
|
|
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_STOP);
|
|
VR_CLRBIT16(sc, VR_COMMAND, (VR_CMD_RX_ON|VR_CMD_TX_ON));
|
|
CSR_WRITE_2(sc, VR_IMR, 0x0000);
|
|
CSR_WRITE_4(sc, VR_TXADDR, 0x00000000);
|
|
CSR_WRITE_4(sc, VR_RXADDR, 0x00000000);
|
|
|
|
/*
|
|
* Free data in the RX lists.
|
|
*/
|
|
for (i = 0; i < VR_RX_LIST_CNT; i++) {
|
|
if (sc->vr_cdata.vr_rx_chain[i].vr_mbuf != NULL) {
|
|
m_freem(sc->vr_cdata.vr_rx_chain[i].vr_mbuf);
|
|
sc->vr_cdata.vr_rx_chain[i].vr_mbuf = NULL;
|
|
}
|
|
}
|
|
bzero((char *)&sc->vr_ldata->vr_rx_list,
|
|
sizeof(sc->vr_ldata->vr_rx_list));
|
|
|
|
/*
|
|
* Free the TX list buffers.
|
|
*/
|
|
for (i = 0; i < VR_TX_LIST_CNT; i++) {
|
|
if (sc->vr_cdata.vr_tx_chain[i].vr_mbuf != NULL) {
|
|
m_freem(sc->vr_cdata.vr_tx_chain[i].vr_mbuf);
|
|
sc->vr_cdata.vr_tx_chain[i].vr_mbuf = NULL;
|
|
}
|
|
}
|
|
|
|
bzero((char *)&sc->vr_ldata->vr_tx_list,
|
|
sizeof(sc->vr_ldata->vr_tx_list));
|
|
|
|
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
|
|
VR_UNLOCK(sc);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Stop all chip I/O so that the kernel's probe routines don't
|
|
* get confused by errant DMAs when rebooting.
|
|
*/
|
|
static void
|
|
vr_shutdown(dev)
|
|
device_t dev;
|
|
{
|
|
struct vr_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
vr_stop(sc);
|
|
|
|
return;
|
|
}
|