ea7d6fcdcd
and modified for its new location.
1606 lines
38 KiB
C
1606 lines
38 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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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* Some Rhine chips 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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#ifdef HAVE_KERNEL_OPTION_HEADERS
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#include "opt_device_polling.h"
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#endif
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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/module.h>
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#include <sys/socket.h>
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#include <net/if.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/if_types.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.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/miivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#define VR_USEIOSPACE
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#include <dev/vr/if_vrreg.h>
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MODULE_DEPEND(vr, pci, 1, 1, 1);
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MODULE_DEPEND(vr, ether, 1, 1, 1);
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MODULE_DEPEND(vr, miibus, 1, 1, 1);
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/* "device miibus" required. See GENERIC if you get errors here. */
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#include "miibus_if.h"
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/*
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* Various supported device vendors/types, their names & quirks
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*/
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#define VR_Q_NEEDALIGN (1<<0)
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#define VR_Q_CSUM (1<<1)
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static struct vr_type {
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u_int16_t vr_vid;
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u_int16_t vr_did;
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int vr_quirks;
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char *vr_name;
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} vr_devs[] = {
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{ VIA_VENDORID, VIA_DEVICEID_RHINE,
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VR_Q_NEEDALIGN,
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"VIA VT3043 Rhine I 10/100BaseTX" },
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{ VIA_VENDORID, VIA_DEVICEID_RHINE_II,
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VR_Q_NEEDALIGN,
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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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0,
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"VIA VT6102 Rhine II 10/100BaseTX" },
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{ VIA_VENDORID, VIA_DEVICEID_RHINE_III,
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0,
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"VIA VT6105 Rhine III 10/100BaseTX" },
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{ VIA_VENDORID, VIA_DEVICEID_RHINE_III_M,
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VR_Q_CSUM,
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"VIA VT6105M Rhine III 10/100BaseTX" },
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{ DELTA_VENDORID, DELTA_DEVICEID_RHINE_II,
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VR_Q_NEEDALIGN,
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"Delta Electronics Rhine II 10/100BaseTX" },
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{ ADDTRON_VENDORID, ADDTRON_DEVICEID_RHINE_II,
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VR_Q_NEEDALIGN,
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"Addtron Technology Rhine II 10/100BaseTX" },
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{ 0, 0, 0, NULL }
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};
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struct vr_list_data {
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struct vr_desc vr_rx_list[VR_RX_LIST_CNT];
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struct vr_desc vr_tx_list[VR_TX_LIST_CNT];
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};
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struct vr_softc {
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struct ifnet *vr_ifp; /* interface info */
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device_t vr_dev;
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struct resource *vr_res;
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struct resource *vr_irq;
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void *vr_intrhand;
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device_t vr_miibus;
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u_int8_t vr_revid; /* Rhine chip revision */
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u_int8_t vr_flags; /* See VR_F_* below */
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struct vr_list_data *vr_ldata;
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struct callout vr_stat_callout;
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struct mtx vr_mtx;
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int vr_suspended; /* if 1, sleeping/detaching */
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int vr_quirks;
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struct vr_desc *vr_rx_head;
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struct vr_desc *vr_tx_cons;
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struct vr_desc *vr_tx_prod;
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#ifdef DEVICE_POLLING
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int rxcycles;
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#endif
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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_desc *, 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_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 void vr_start_locked(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_init_locked(struct vr_softc *);
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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 int 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 int vr_mii_readreg(const struct vr_softc *, struct vr_mii_frame *);
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static int vr_mii_writereg(const struct vr_softc *, const struct vr_mii_frame *);
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static int vr_miibus_readreg(device_t, uint16_t, uint16_t);
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static int vr_miibus_writereg(device_t, uint16_t, uint16_t, uint16_t);
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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 void vr_setmulti(struct vr_softc *);
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static void vr_reset(const 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(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_F_RESTART 0x01 /* Restart unit on next tick */
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#define VR_LOCK(_sc) mtx_lock(&(_sc)->vr_mtx)
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#define VR_UNLOCK(_sc) mtx_unlock(&(_sc)->vr_mtx)
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#define VR_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->vr_mtx, MA_OWNED)
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/*
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* register space access macros
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*/
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#define CSR_WRITE_4(sc, reg, val) bus_write_4(sc->vr_res, reg, val)
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#define CSR_WRITE_2(sc, reg, val) bus_write_2(sc->vr_res, reg, val)
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#define CSR_WRITE_1(sc, reg, val) bus_write_1(sc->vr_res, reg, val)
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#define CSR_READ_2(sc, reg) bus_read_2(sc->vr_res, reg)
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#define CSR_READ_1(sc, reg) bus_read_1(sc->vr_res, reg)
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#define VR_SETBIT(sc, reg, x) CSR_WRITE_1(sc, reg, CSR_READ_1(sc, reg) | (x))
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#define VR_CLRBIT(sc, reg, x) CSR_WRITE_1(sc, reg, CSR_READ_1(sc, reg) & ~(x))
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#define VR_SETBIT16(sc, reg, x) CSR_WRITE_2(sc, reg, CSR_READ_2(sc, reg) | (x))
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#define VR_CLRBIT16(sc, reg, x) CSR_WRITE_2(sc, reg, CSR_READ_2(sc, reg) & ~(x))
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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(const struct vr_softc *sc, struct vr_mii_frame *frame)
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{
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int i;
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/* Set the PHY address. */
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CSR_WRITE_1(sc, VR_PHYADDR, (CSR_READ_1(sc, VR_PHYADDR)& 0xe0)|
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frame->mii_phyaddr);
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/* Set the register address. */
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CSR_WRITE_1(sc, VR_MIIADDR, frame->mii_regaddr);
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VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_READ_ENB);
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for (i = 0; i < 10000; i++) {
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if ((CSR_READ_1(sc, VR_MIICMD) & VR_MIICMD_READ_ENB) == 0)
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break;
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DELAY(1);
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}
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frame->mii_data = CSR_READ_2(sc, VR_MIIDATA);
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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(const struct vr_softc *sc, const struct vr_mii_frame *frame)
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{
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int i;
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/* Set the PHY address. */
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CSR_WRITE_1(sc, VR_PHYADDR, (CSR_READ_1(sc, VR_PHYADDR)& 0xe0)|
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frame->mii_phyaddr);
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/* Set the register address and data to write. */
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CSR_WRITE_1(sc, VR_MIIADDR, frame->mii_regaddr);
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CSR_WRITE_2(sc, VR_MIIDATA, frame->mii_data);
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VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_WRITE_ENB);
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for (i = 0; i < 10000; i++) {
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if ((CSR_READ_1(sc, VR_MIICMD) & VR_MIICMD_WRITE_ENB) == 0)
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break;
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DELAY(1);
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}
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return (0);
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}
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static int
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vr_miibus_readreg(device_t dev, uint16_t phy, uint16_t reg)
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{
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struct vr_mii_frame frame;
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struct vr_softc *sc = device_get_softc(dev);
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if (sc->vr_revid == REV_ID_VT6102_APOLLO && phy != 1)
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return (0);
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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(device_t dev, uint16_t phy, uint16_t reg, uint16_t data)
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{
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struct vr_mii_frame frame;
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struct vr_softc *sc = device_get_softc(dev);
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if (sc->vr_revid == REV_ID_VT6102_APOLLO && phy != 1)
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return (0);
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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(device_t dev)
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{
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struct mii_data *mii;
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struct vr_softc *sc = device_get_softc(dev);
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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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}
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/*
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* Program the 64-bit multicast hash filter.
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*/
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static void
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vr_setmulti(struct vr_softc *sc)
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{
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struct ifnet *ifp = sc->vr_ifp;
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int h = 0;
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uint32_t hashes[2] = { 0, 0 };
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struct ifmultiaddr *ifma;
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uint8_t rxfilt;
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int mcnt = 0;
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VR_LOCK_ASSERT(sc);
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rxfilt = CSR_READ_1(sc, VR_RXCFG);
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if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
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rxfilt |= VR_RXCFG_RX_MULTI;
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CSR_WRITE_1(sc, VR_RXCFG, rxfilt);
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CSR_WRITE_4(sc, VR_MAR0, 0xFFFFFFFF);
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CSR_WRITE_4(sc, VR_MAR1, 0xFFFFFFFF);
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return;
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}
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/* First, zero out all the existing hash bits. */
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CSR_WRITE_4(sc, VR_MAR0, 0);
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CSR_WRITE_4(sc, VR_MAR1, 0);
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/* Now program new ones. */
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IF_ADDR_LOCK(ifp);
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TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
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if (ifma->ifma_addr->sa_family != AF_LINK)
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continue;
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h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
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ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
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if (h < 32)
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hashes[0] |= (1 << h);
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else
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hashes[1] |= (1 << (h - 32));
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mcnt++;
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}
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IF_ADDR_UNLOCK(ifp);
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if (mcnt)
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rxfilt |= VR_RXCFG_RX_MULTI;
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else
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rxfilt &= ~VR_RXCFG_RX_MULTI;
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CSR_WRITE_4(sc, VR_MAR0, hashes[0]);
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CSR_WRITE_4(sc, VR_MAR1, hashes[1]);
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CSR_WRITE_1(sc, VR_RXCFG, rxfilt);
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}
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/*
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* In order to fiddle with the
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* 'full-duplex' and '100Mbps' bits in the netconfig register, we
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* first have to put the transmit and/or receive logic in the idle state.
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*/
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static void
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vr_setcfg(struct vr_softc *sc, int media)
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{
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int restart = 0;
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VR_LOCK_ASSERT(sc);
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if (CSR_READ_2(sc, VR_COMMAND) & (VR_CMD_TX_ON|VR_CMD_RX_ON)) {
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restart = 1;
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VR_CLRBIT16(sc, VR_COMMAND, (VR_CMD_TX_ON|VR_CMD_RX_ON));
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}
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if ((media & IFM_GMASK) == IFM_FDX)
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VR_SETBIT16(sc, VR_COMMAND, VR_CMD_FULLDUPLEX);
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else
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VR_CLRBIT16(sc, VR_COMMAND, VR_CMD_FULLDUPLEX);
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if (restart)
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VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON|VR_CMD_RX_ON);
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}
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static void
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vr_reset(const struct vr_softc *sc)
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{
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register int i;
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/*VR_LOCK_ASSERT(sc);*/ /* XXX: Called during attach w/o lock. */
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VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RESET);
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for (i = 0; i < VR_TIMEOUT; i++) {
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DELAY(10);
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if (!(CSR_READ_2(sc, VR_COMMAND) & VR_CMD_RESET))
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break;
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}
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if (i == VR_TIMEOUT) {
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if (sc->vr_revid < REV_ID_VT3065_A)
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device_printf(sc->vr_dev, "reset never completed!\n");
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else {
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/* Use newer force reset command */
|
|
device_printf(sc->vr_dev, "Using force reset command.\n");
|
|
VR_SETBIT(sc, VR_MISC_CR1, VR_MISCCR1_FORSRST);
|
|
}
|
|
}
|
|
|
|
/* Wait a little while for the chip to get its brains in order. */
|
|
DELAY(1000);
|
|
}
|
|
|
|
/*
|
|
* Probe for a VIA Rhine chip. Check the PCI vendor and device
|
|
* IDs against our list and return a match or NULL
|
|
*/
|
|
static struct vr_type *
|
|
vr_match(device_t dev)
|
|
{
|
|
struct vr_type *t = vr_devs;
|
|
|
|
for (t = vr_devs; t->vr_name != NULL; t++)
|
|
if ((pci_get_vendor(dev) == t->vr_vid) &&
|
|
(pci_get_device(dev) == t->vr_did))
|
|
return (t);
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* 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(device_t dev)
|
|
{
|
|
struct vr_type *t;
|
|
|
|
t = vr_match(dev);
|
|
if (t != NULL) {
|
|
device_set_desc(dev, t->vr_name);
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
return (ENXIO);
|
|
}
|
|
|
|
/*
|
|
* Attach the interface. Allocate softc structures, do ifmedia
|
|
* setup and ethernet/BPF attach.
|
|
*/
|
|
static int
|
|
vr_attach(device_t dev)
|
|
{
|
|
int i;
|
|
u_char eaddr[ETHER_ADDR_LEN];
|
|
struct vr_softc *sc;
|
|
struct ifnet *ifp;
|
|
int error = 0, rid;
|
|
struct vr_type *t;
|
|
int pmc;
|
|
|
|
sc = device_get_softc(dev);
|
|
sc->vr_dev = dev;
|
|
t = vr_match(dev);
|
|
KASSERT(t != NULL, ("Lost if_vr device match"));
|
|
sc->vr_quirks = t->vr_quirks;
|
|
device_printf(dev, "Quirks: 0x%x\n", sc->vr_quirks);
|
|
|
|
mtx_init(&sc->vr_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
|
|
MTX_DEF);
|
|
callout_init_mtx(&sc->vr_stat_callout, &sc->vr_mtx, 0);
|
|
|
|
/*
|
|
* Map control/status registers.
|
|
*/
|
|
pci_enable_busmaster(dev);
|
|
sc->vr_revid = pci_read_config(dev, VR_PCI_REVID, 4) & 0x000000FF;
|
|
|
|
rid = VR_RID;
|
|
sc->vr_res = bus_alloc_resource_any(dev, VR_RES, &rid, RF_ACTIVE);
|
|
|
|
if (sc->vr_res == NULL) {
|
|
device_printf(dev, "couldn't map ports/memory\n");
|
|
error = ENXIO;
|
|
goto fail;
|
|
}
|
|
|
|
/* Allocate interrupt */
|
|
rid = 0;
|
|
sc->vr_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
|
|
RF_SHAREABLE | RF_ACTIVE);
|
|
|
|
if (sc->vr_irq == NULL) {
|
|
device_printf(dev, "couldn't map interrupt\n");
|
|
error = ENXIO;
|
|
goto fail;
|
|
}
|
|
|
|
/* Allocate ifnet structure. */
|
|
ifp = sc->vr_ifp = if_alloc(IFT_ETHER);
|
|
if (ifp == NULL) {
|
|
device_printf(dev, "can not if_alloc()\n");
|
|
error = ENOSPC;
|
|
goto fail;
|
|
}
|
|
ifp->if_softc = sc;
|
|
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
|
|
ifp->if_mtu = ETHERMTU;
|
|
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
|
|
ifp->if_ioctl = vr_ioctl;
|
|
ifp->if_start = vr_start;
|
|
ifp->if_watchdog = vr_watchdog;
|
|
ifp->if_init = vr_init;
|
|
IFQ_SET_MAXLEN(&ifp->if_snd, VR_TX_LIST_CNT - 1);
|
|
ifp->if_snd.ifq_maxlen = VR_TX_LIST_CNT - 1;
|
|
IFQ_SET_READY(&ifp->if_snd);
|
|
|
|
if (sc->vr_quirks & VR_Q_CSUM) {
|
|
ifp->if_hwassist = (CSUM_IP | CSUM_TCP | CSUM_UDP);
|
|
ifp->if_capabilities |= IFCAP_HWCSUM;
|
|
}
|
|
|
|
ifp->if_capabilities |= IFCAP_VLAN_MTU;
|
|
ifp->if_capenable = ifp->if_capabilities;
|
|
if (ifp->if_capenable & IFCAP_TXCSUM)
|
|
ifp->if_hwassist = (CSUM_IP | CSUM_TCP | CSUM_UDP);
|
|
else
|
|
ifp->if_hwassist = 0;
|
|
|
|
#ifdef DEVICE_POLLING
|
|
ifp->if_capabilities |= IFCAP_POLLING;
|
|
#endif
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
if (pci_find_extcap(dev, PCIY_PMG, &pmc) == 0)
|
|
VR_CLRBIT(sc, VR_STICKHW, (VR_STICKHW_DS0|VR_STICKHW_DS1));
|
|
|
|
/* Reset the adapter. */
|
|
vr_reset(sc);
|
|
|
|
/*
|
|
* Turn on bit2 (MIION) in PCI configuration register 0x53 during
|
|
* initialization and disable AUTOPOLL.
|
|
*/
|
|
pci_write_config(dev, VR_PCI_MODE,
|
|
pci_read_config(dev, VR_PCI_MODE, 4) | (VR_MODE3_MIION << 24), 4);
|
|
VR_CLRBIT(sc, VR_MIICMD, VR_MIICMD_AUTOPOLL);
|
|
|
|
/*
|
|
* 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);
|
|
|
|
sc->vr_ldata = contigmalloc(sizeof(struct vr_list_data), M_DEVBUF,
|
|
M_NOWAIT | M_ZERO, 0, 0xffffffff, PAGE_SIZE, 0);
|
|
|
|
if (sc->vr_ldata == NULL) {
|
|
device_printf(dev, "no memory for list buffers!\n");
|
|
error = ENXIO;
|
|
goto fail;
|
|
}
|
|
|
|
/* Do MII setup. */
|
|
if (mii_phy_probe(dev, &sc->vr_miibus,
|
|
vr_ifmedia_upd, vr_ifmedia_sts)) {
|
|
device_printf(dev, "MII without any phy!\n");
|
|
error = ENXIO;
|
|
goto fail;
|
|
}
|
|
|
|
/* Call MI attach routine. */
|
|
ether_ifattach(ifp, eaddr);
|
|
|
|
sc->vr_suspended = 0;
|
|
|
|
/* Hook interrupt last to avoid having to lock softc */
|
|
error = bus_setup_intr(dev, sc->vr_irq, INTR_TYPE_NET | INTR_MPSAFE,
|
|
NULL, vr_intr, sc, &sc->vr_intrhand);
|
|
|
|
if (error) {
|
|
device_printf(dev, "couldn't set up irq\n");
|
|
ether_ifdetach(ifp);
|
|
goto fail;
|
|
}
|
|
|
|
fail:
|
|
if (error)
|
|
vr_detach(dev);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Shutdown hardware and free up resources. This can be called any
|
|
* time after the mutex has been initialized. It is called in both
|
|
* the error case in attach and the normal detach case so it needs
|
|
* to be careful about only freeing resources that have actually been
|
|
* allocated.
|
|
*/
|
|
static int
|
|
vr_detach(device_t dev)
|
|
{
|
|
struct vr_softc *sc = device_get_softc(dev);
|
|
struct ifnet *ifp = sc->vr_ifp;
|
|
|
|
KASSERT(mtx_initialized(&sc->vr_mtx), ("vr mutex not initialized"));
|
|
|
|
#ifdef DEVICE_POLLING
|
|
if (ifp->if_capenable & IFCAP_POLLING)
|
|
ether_poll_deregister(ifp);
|
|
#endif
|
|
|
|
/* These should only be active if attach succeeded */
|
|
if (device_is_attached(dev)) {
|
|
VR_LOCK(sc);
|
|
sc->vr_suspended = 1;
|
|
vr_stop(sc);
|
|
VR_UNLOCK(sc);
|
|
callout_drain(&sc->vr_stat_callout);
|
|
ether_ifdetach(ifp);
|
|
}
|
|
if (sc->vr_miibus)
|
|
device_delete_child(dev, sc->vr_miibus);
|
|
bus_generic_detach(dev);
|
|
|
|
if (sc->vr_intrhand)
|
|
bus_teardown_intr(dev, sc->vr_irq, sc->vr_intrhand);
|
|
if (sc->vr_irq)
|
|
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->vr_irq);
|
|
if (sc->vr_res)
|
|
bus_release_resource(dev, VR_RES, VR_RID, sc->vr_res);
|
|
|
|
if (ifp)
|
|
if_free(ifp);
|
|
|
|
if (sc->vr_ldata)
|
|
contigfree(sc->vr_ldata, sizeof(struct vr_list_data), M_DEVBUF);
|
|
|
|
mtx_destroy(&sc->vr_mtx);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Initialize the transmit descriptors.
|
|
*/
|
|
static int
|
|
vr_list_tx_init(struct vr_softc *sc)
|
|
{
|
|
struct vr_list_data *ld;
|
|
int i;
|
|
|
|
ld = sc->vr_ldata;
|
|
for (i = 0; i < VR_TX_LIST_CNT; i++) {
|
|
if (i == (VR_TX_LIST_CNT - 1)) {
|
|
ld->vr_tx_list[i].vr_next =
|
|
&ld->vr_tx_list[0];
|
|
ld->vr_tx_list[i].vr_nextphys =
|
|
vtophys(&ld->vr_tx_list[0]);
|
|
} else {
|
|
ld->vr_tx_list[i].vr_next =
|
|
&ld->vr_tx_list[i + 1];
|
|
ld->vr_tx_list[i].vr_nextphys =
|
|
vtophys(&ld->vr_tx_list[i + 1]);
|
|
}
|
|
}
|
|
sc->vr_tx_cons = sc->vr_tx_prod = &ld->vr_tx_list[0];
|
|
|
|
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(struct vr_softc *sc)
|
|
{
|
|
struct vr_list_data *ld;
|
|
int i;
|
|
|
|
VR_LOCK_ASSERT(sc);
|
|
|
|
ld = sc->vr_ldata;
|
|
|
|
for (i = 0; i < VR_RX_LIST_CNT; i++) {
|
|
if (vr_newbuf(&ld->vr_rx_list[i], NULL) == ENOBUFS)
|
|
return (ENOBUFS);
|
|
if (i == (VR_RX_LIST_CNT - 1)) {
|
|
ld->vr_rx_list[i].vr_next = &ld->vr_rx_list[0];
|
|
ld->vr_rx_list[i].vr_nextphys =
|
|
vtophys(&ld->vr_rx_list[0]);
|
|
} else {
|
|
ld->vr_rx_list[i].vr_next =
|
|
&ld->vr_rx_list[i + 1];
|
|
ld->vr_rx_list[i].vr_nextphys =
|
|
vtophys(&ld->vr_rx_list[i + 1]);
|
|
}
|
|
}
|
|
|
|
sc->vr_rx_head = &ld->vr_rx_list[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(struct vr_desc *c, struct mbuf *m)
|
|
{
|
|
struct mbuf *m_new = NULL;
|
|
|
|
if (m == NULL) {
|
|
m_new = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
|
|
if (m_new == NULL)
|
|
return (ENOBUFS);
|
|
} 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(uint64_t));
|
|
|
|
c->vr_mbuf = m_new;
|
|
c->vr_status = VR_RXSTAT;
|
|
c->vr_data = vtophys(mtod(m_new, caddr_t));
|
|
c->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(struct vr_softc *sc)
|
|
{
|
|
struct mbuf *m, *m0;
|
|
struct ifnet *ifp;
|
|
struct vr_desc *cur_rx;
|
|
int total_len = 0;
|
|
uint32_t rxstat, rxctl;
|
|
|
|
VR_LOCK_ASSERT(sc);
|
|
ifp = sc->vr_ifp;
|
|
|
|
while (!((rxstat = sc->vr_rx_head->vr_status) &
|
|
VR_RXSTAT_OWN)) {
|
|
#ifdef DEVICE_POLLING
|
|
if (ifp->if_capenable & IFCAP_POLLING) {
|
|
if (sc->rxcycles <= 0)
|
|
break;
|
|
sc->rxcycles--;
|
|
}
|
|
#endif
|
|
m0 = NULL;
|
|
cur_rx = sc->vr_rx_head;
|
|
sc->vr_rx_head = cur_rx->vr_next;
|
|
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++;
|
|
device_printf(sc->vr_dev,
|
|
"rx error (%02x):", rxstat & 0x000000ff);
|
|
if (rxstat & VR_RXSTAT_CRCERR)
|
|
printf(" crc error");
|
|
if (rxstat & VR_RXSTAT_FRAMEALIGNERR)
|
|
printf(" frame alignment error\n");
|
|
if (rxstat & VR_RXSTAT_FIFOOFLOW)
|
|
printf(" FIFO overflow");
|
|
if (rxstat & VR_RXSTAT_GIANT)
|
|
printf(" received giant packet");
|
|
if (rxstat & VR_RXSTAT_RUNT)
|
|
printf(" received runt packet");
|
|
if (rxstat & VR_RXSTAT_BUSERR)
|
|
printf(" system bus error");
|
|
if (rxstat & VR_RXSTAT_BUFFERR)
|
|
printf("rx buffer error");
|
|
printf("\n");
|
|
vr_newbuf(cur_rx, m);
|
|
continue;
|
|
}
|
|
|
|
/* No errors; receive the packet. */
|
|
total_len = VR_RXBYTES(cur_rx->vr_status);
|
|
if (ifp->if_capenable & IFCAP_RXCSUM) {
|
|
rxctl = cur_rx->vr_ctl;
|
|
if ((rxctl & VR_RXCTL_GOODIP) == VR_RXCTL_GOODIP)
|
|
m->m_pkthdr.csum_flags |=
|
|
CSUM_IP_CHECKED | CSUM_IP_VALID;
|
|
if ((rxctl & VR_RXCTL_GOODTCPUDP)) {
|
|
m->m_pkthdr.csum_flags |=
|
|
CSUM_DATA_VALID | CSUM_PSEUDO_HDR;
|
|
m->m_pkthdr.csum_data = 0xffff;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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(cur_rx, m);
|
|
if (m0 == NULL) {
|
|
ifp->if_ierrors++;
|
|
continue;
|
|
}
|
|
m = m0;
|
|
|
|
ifp->if_ipackets++;
|
|
VR_UNLOCK(sc);
|
|
(*ifp->if_input)(ifp, m);
|
|
VR_LOCK(sc);
|
|
}
|
|
}
|
|
|
|
static void
|
|
vr_rxeoc(struct vr_softc *sc)
|
|
{
|
|
struct ifnet *ifp = sc->vr_ifp;
|
|
int i;
|
|
|
|
VR_LOCK_ASSERT(sc);
|
|
|
|
ifp->if_ierrors++;
|
|
|
|
VR_CLRBIT16(sc, VR_COMMAND, VR_CMD_RX_ON);
|
|
DELAY(10000);
|
|
|
|
/* Wait for receiver to stop */
|
|
for (i = 0x400;
|
|
i && (CSR_READ_2(sc, VR_COMMAND) & VR_CMD_RX_ON);
|
|
i--) {
|
|
;
|
|
}
|
|
|
|
if (!i) {
|
|
device_printf(sc->vr_dev, "rx shutdown error!\n");
|
|
sc->vr_flags |= VR_F_RESTART;
|
|
return;
|
|
}
|
|
|
|
vr_rxeof(sc);
|
|
|
|
CSR_WRITE_4(sc, VR_RXADDR, vtophys(sc->vr_rx_head));
|
|
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RX_ON);
|
|
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RX_GO);
|
|
}
|
|
|
|
/*
|
|
* A frame was downloaded to the chip. It's safe for us to clean up
|
|
* the list buffers.
|
|
*/
|
|
static void
|
|
vr_txeof(struct vr_softc *sc)
|
|
{
|
|
struct vr_desc *cur_tx;
|
|
struct ifnet *ifp = sc->vr_ifp;
|
|
|
|
VR_LOCK_ASSERT(sc);
|
|
|
|
/*
|
|
* Go through our tx list and free mbufs for those
|
|
* frames that have been transmitted.
|
|
*/
|
|
cur_tx = sc->vr_tx_cons;
|
|
while (cur_tx != sc->vr_tx_prod) {
|
|
uint32_t txstat;
|
|
int i;
|
|
|
|
txstat = cur_tx->vr_status;
|
|
|
|
if ((txstat & VR_TXSTAT_ABRT) ||
|
|
(txstat & VR_TXSTAT_UDF)) {
|
|
for (i = 0x400;
|
|
i && (CSR_READ_2(sc, VR_COMMAND) & VR_CMD_TX_ON);
|
|
i--)
|
|
; /* Wait for chip to shutdown */
|
|
if (!i) {
|
|
device_printf(sc->vr_dev, "tx shutdown timeout\n");
|
|
sc->vr_flags |= VR_F_RESTART;
|
|
break;
|
|
}
|
|
atomic_set_acq_32(&cur_tx->vr_status, VR_TXSTAT_OWN);
|
|
CSR_WRITE_4(sc, VR_TXADDR, vtophys(cur_tx));
|
|
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;
|
|
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
|
|
cur_tx = cur_tx->vr_next;
|
|
}
|
|
sc->vr_tx_cons = cur_tx;
|
|
if (cur_tx->vr_mbuf == NULL)
|
|
ifp->if_timer = 0;
|
|
}
|
|
|
|
static void
|
|
vr_tick(void *xsc)
|
|
{
|
|
struct vr_softc *sc = xsc;
|
|
struct mii_data *mii;
|
|
|
|
VR_LOCK_ASSERT(sc);
|
|
|
|
if (sc->vr_flags & VR_F_RESTART) {
|
|
device_printf(sc->vr_dev, "restarting\n");
|
|
vr_stop(sc);
|
|
vr_reset(sc);
|
|
vr_init_locked(sc);
|
|
sc->vr_flags &= ~VR_F_RESTART;
|
|
}
|
|
|
|
mii = device_get_softc(sc->vr_miibus);
|
|
mii_tick(mii);
|
|
callout_reset(&sc->vr_stat_callout, hz, vr_tick, sc);
|
|
}
|
|
|
|
#ifdef DEVICE_POLLING
|
|
static poll_handler_t vr_poll;
|
|
static poll_handler_t vr_poll_locked;
|
|
|
|
static void
|
|
vr_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
|
|
{
|
|
struct vr_softc *sc = ifp->if_softc;
|
|
|
|
VR_LOCK(sc);
|
|
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
|
|
vr_poll_locked(ifp, cmd, count);
|
|
VR_UNLOCK(sc);
|
|
}
|
|
|
|
static void
|
|
vr_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
|
|
{
|
|
struct vr_softc *sc = ifp->if_softc;
|
|
|
|
VR_LOCK_ASSERT(sc);
|
|
|
|
sc->rxcycles = count;
|
|
vr_rxeof(sc);
|
|
vr_txeof(sc);
|
|
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
|
|
vr_start_locked(ifp);
|
|
|
|
if (cmd == POLL_AND_CHECK_STATUS) {
|
|
uint16_t status;
|
|
|
|
/* Also check status register. */
|
|
status = CSR_READ_2(sc, VR_ISR);
|
|
if (status)
|
|
CSR_WRITE_2(sc, VR_ISR, status);
|
|
|
|
if ((status & VR_INTRS) == 0)
|
|
return;
|
|
|
|
if (status & VR_ISR_RX_DROPPED) {
|
|
if_printf(ifp, "rx packet lost\n");
|
|
ifp->if_ierrors++;
|
|
}
|
|
|
|
if ((status & VR_ISR_RX_ERR) || (status & VR_ISR_RX_NOBUF) ||
|
|
(status & VR_ISR_RX_NOBUF) || (status & VR_ISR_RX_OFLOW)) {
|
|
if_printf(ifp, "receive error (%04x)", status);
|
|
if (status & VR_ISR_RX_NOBUF)
|
|
printf(" no buffers");
|
|
if (status & VR_ISR_RX_OFLOW)
|
|
printf(" overflow");
|
|
if (status & VR_ISR_RX_DROPPED)
|
|
printf(" packet lost");
|
|
printf("\n");
|
|
vr_rxeoc(sc);
|
|
}
|
|
|
|
if ((status & VR_ISR_BUSERR) ||
|
|
(status & VR_ISR_TX_UNDERRUN)) {
|
|
vr_reset(sc);
|
|
vr_init_locked(sc);
|
|
return;
|
|
}
|
|
|
|
if ((status & VR_ISR_UDFI) ||
|
|
(status & VR_ISR_TX_ABRT2) ||
|
|
(status & VR_ISR_TX_ABRT)) {
|
|
ifp->if_oerrors++;
|
|
if (sc->vr_tx_cons->vr_mbuf != NULL) {
|
|
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON);
|
|
VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_GO);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif /* DEVICE_POLLING */
|
|
|
|
static void
|
|
vr_intr(void *arg)
|
|
{
|
|
struct vr_softc *sc = arg;
|
|
struct ifnet *ifp = sc->vr_ifp;
|
|
uint16_t status;
|
|
|
|
VR_LOCK(sc);
|
|
|
|
if (sc->vr_suspended) {
|
|
/*
|
|
* Forcibly disable interrupts.
|
|
* XXX: Mobile VIA based platforms may need
|
|
* interrupt re-enable on resume.
|
|
*/
|
|
CSR_WRITE_2(sc, VR_IMR, 0x0000);
|
|
goto done_locked;
|
|
}
|
|
|
|
#ifdef DEVICE_POLLING
|
|
if (ifp->if_capenable & IFCAP_POLLING)
|
|
goto done_locked;
|
|
#endif
|
|
|
|
/* Suppress unwanted interrupts. */
|
|
if (!(ifp->if_flags & IFF_UP)) {
|
|
vr_stop(sc);
|
|
goto done_locked;
|
|
}
|
|
|
|
/* 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_DROPPED) {
|
|
device_printf(sc->vr_dev, "rx packet lost\n");
|
|
ifp->if_ierrors++;
|
|
}
|
|
|
|
if ((status & VR_ISR_RX_ERR) || (status & VR_ISR_RX_NOBUF) ||
|
|
(status & VR_ISR_RX_NOBUF) || (status & VR_ISR_RX_OFLOW)) {
|
|
device_printf(sc->vr_dev, "receive error (%04x)", status);
|
|
if (status & VR_ISR_RX_NOBUF)
|
|
printf(" no buffers");
|
|
if (status & VR_ISR_RX_OFLOW)
|
|
printf(" overflow");
|
|
if (status & VR_ISR_RX_DROPPED)
|
|
printf(" packet lost");
|
|
printf("\n");
|
|
vr_rxeoc(sc);
|
|
}
|
|
|
|
if ((status & VR_ISR_BUSERR) || (status & VR_ISR_TX_UNDERRUN)) {
|
|
vr_reset(sc);
|
|
vr_init_locked(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_tx_cons->vr_mbuf != NULL) {
|
|
VR_SETBIT16(sc, VR_COMMAND,
|
|
VR_CMD_TX_ON);
|
|
VR_SETBIT16(sc, VR_COMMAND,
|
|
VR_CMD_TX_GO);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Re-enable interrupts. */
|
|
CSR_WRITE_2(sc, VR_IMR, VR_INTRS);
|
|
|
|
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
|
|
vr_start_locked(ifp);
|
|
|
|
done_locked:
|
|
VR_UNLOCK(sc);
|
|
}
|
|
|
|
/*
|
|
* 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(struct ifnet *ifp)
|
|
{
|
|
struct vr_softc *sc = ifp->if_softc;
|
|
|
|
VR_LOCK(sc);
|
|
vr_start_locked(ifp);
|
|
VR_UNLOCK(sc);
|
|
}
|
|
|
|
static void
|
|
vr_start_locked(struct ifnet *ifp)
|
|
{
|
|
struct vr_softc *sc = ifp->if_softc;
|
|
struct mbuf *m, *m_head;
|
|
struct vr_desc *cur_tx, *n_tx;
|
|
struct vr_desc *f = NULL;
|
|
uint32_t cval;
|
|
|
|
if (ifp->if_drv_flags & IFF_DRV_OACTIVE)
|
|
return;
|
|
|
|
for (cur_tx = sc->vr_tx_prod;
|
|
cur_tx->vr_next != sc->vr_tx_cons; ) {
|
|
IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
|
|
if (m_head == NULL)
|
|
break;
|
|
|
|
VR_LOCK_ASSERT(sc);
|
|
/*
|
|
* Some 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 (sc->vr_quirks & VR_Q_NEEDALIGN) {
|
|
m = m_defrag(m_head, M_DONTWAIT);
|
|
if (m == NULL) {
|
|
/* Rollback, send what we were able to encap. */
|
|
IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
|
|
break;
|
|
}
|
|
m_head = m;
|
|
}
|
|
|
|
/*
|
|
* 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_pkthdr.len < VR_MIN_FRAMELEN) {
|
|
if (m_head->m_next != NULL)
|
|
m_head = m_defrag(m_head, M_DONTWAIT);
|
|
m_head->m_pkthdr.len += VR_MIN_FRAMELEN - m_head->m_len;
|
|
m_head->m_len = m_head->m_pkthdr.len;
|
|
/* XXX: bzero the padding bytes */
|
|
}
|
|
|
|
n_tx = cur_tx;
|
|
for (m = m_head; m != NULL; m = m->m_next) {
|
|
if (m->m_len == 0)
|
|
continue;
|
|
if (n_tx->vr_next == sc->vr_tx_cons) {
|
|
IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
|
|
sc->vr_tx_prod = cur_tx;
|
|
return;
|
|
}
|
|
KASSERT(n_tx->vr_mbuf == NULL, ("if_vr_tx overrun"));
|
|
|
|
f = n_tx;
|
|
f->vr_data = vtophys(mtod(m, caddr_t));
|
|
cval = m->m_len;
|
|
cval |= VR_TXCTL_TLINK;
|
|
|
|
if ((ifp->if_capenable & IFCAP_TXCSUM) &&
|
|
m_head->m_pkthdr.csum_flags) {
|
|
if (m_head->m_pkthdr.csum_flags & CSUM_IP)
|
|
cval |= VR_TXCTL_IPCSUM;
|
|
if (m_head->m_pkthdr.csum_flags & CSUM_TCP)
|
|
cval |= VR_TXCTL_TCPCSUM;
|
|
if (m_head->m_pkthdr.csum_flags & CSUM_UDP)
|
|
cval |= VR_TXCTL_UDPCSUM;
|
|
}
|
|
|
|
if (m == m_head)
|
|
cval |= VR_TXCTL_FIRSTFRAG;
|
|
f->vr_ctl = cval;
|
|
f->vr_status = 0;
|
|
n_tx = n_tx->vr_next;
|
|
}
|
|
|
|
KASSERT(f != NULL, ("if_vr: no packet processed"));
|
|
f->vr_ctl |= VR_TXCTL_LASTFRAG|VR_TXCTL_FINT;
|
|
cur_tx->vr_mbuf = m_head;
|
|
atomic_set_acq_32(&cur_tx->vr_status, VR_TXSTAT_OWN);
|
|
|
|
/* Tell the chip to start transmitting. */
|
|
VR_SETBIT16(sc, VR_COMMAND, /*VR_CMD_TX_ON|*/ VR_CMD_TX_GO);
|
|
|
|
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
|
|
ifp->if_timer = 5;
|
|
|
|
/*
|
|
* If there's a BPF listener, bounce a copy of this frame
|
|
* to him.
|
|
*/
|
|
BPF_MTAP(ifp, m_head);
|
|
cur_tx = n_tx;
|
|
}
|
|
sc->vr_tx_prod = cur_tx;
|
|
}
|
|
|
|
static void
|
|
vr_init(void *xsc)
|
|
{
|
|
struct vr_softc *sc = xsc;
|
|
|
|
VR_LOCK(sc);
|
|
vr_init_locked(sc);
|
|
VR_UNLOCK(sc);
|
|
}
|
|
|
|
static void
|
|
vr_init_locked(struct vr_softc *sc)
|
|
{
|
|
struct ifnet *ifp = sc->vr_ifp;
|
|
struct mii_data *mii;
|
|
int i;
|
|
|
|
VR_LOCK_ASSERT(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, IF_LLADDR(sc->vr_ifp)[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_RXTHRESH128BYTES);
|
|
|
|
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_128BYTES);
|
|
|
|
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) {
|
|
device_printf(sc->vr_dev,
|
|
"initialization failed: no memory for rx buffers\n");
|
|
vr_stop(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_rx_head));
|
|
|
|
/* 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]));
|
|
|
|
CSR_WRITE_2(sc, VR_ISR, 0xFFFF);
|
|
#ifdef DEVICE_POLLING
|
|
/*
|
|
* Disable interrupts if we are polling.
|
|
*/
|
|
if (ifp->if_capenable & IFCAP_POLLING)
|
|
CSR_WRITE_2(sc, VR_IMR, 0);
|
|
else
|
|
#endif
|
|
/*
|
|
* Enable interrupts.
|
|
*/
|
|
CSR_WRITE_2(sc, VR_IMR, VR_INTRS);
|
|
|
|
mii_mediachg(mii);
|
|
|
|
ifp->if_drv_flags |= IFF_DRV_RUNNING;
|
|
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
|
|
callout_reset(&sc->vr_stat_callout, hz, vr_tick, sc);
|
|
}
|
|
|
|
/*
|
|
* Set media options.
|
|
*/
|
|
static int
|
|
vr_ifmedia_upd(struct ifnet *ifp)
|
|
{
|
|
struct vr_softc *sc = ifp->if_softc;
|
|
|
|
if (ifp->if_flags & IFF_UP)
|
|
vr_init(sc);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Report current media status.
|
|
*/
|
|
static void
|
|
vr_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
|
|
{
|
|
struct vr_softc *sc = ifp->if_softc;
|
|
struct mii_data *mii;
|
|
|
|
mii = device_get_softc(sc->vr_miibus);
|
|
VR_LOCK(sc);
|
|
mii_pollstat(mii);
|
|
VR_UNLOCK(sc);
|
|
ifmr->ifm_active = mii->mii_media_active;
|
|
ifmr->ifm_status = mii->mii_media_status;
|
|
}
|
|
|
|
static int
|
|
vr_ioctl(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;
|
|
|
|
switch (command) {
|
|
case SIOCSIFFLAGS:
|
|
VR_LOCK(sc);
|
|
if (ifp->if_flags & IFF_UP) {
|
|
vr_init_locked(sc);
|
|
} else {
|
|
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
|
|
vr_stop(sc);
|
|
}
|
|
VR_UNLOCK(sc);
|
|
error = 0;
|
|
break;
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
VR_LOCK(sc);
|
|
vr_setmulti(sc);
|
|
VR_UNLOCK(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;
|
|
case SIOCSIFCAP:
|
|
#ifdef DEVICE_POLLING
|
|
if (ifr->ifr_reqcap & IFCAP_POLLING &&
|
|
!(ifp->if_capenable & IFCAP_POLLING)) {
|
|
error = ether_poll_register(vr_poll, ifp);
|
|
if (error)
|
|
return(error);
|
|
VR_LOCK(sc);
|
|
/* Disable interrupts */
|
|
CSR_WRITE_2(sc, VR_IMR, 0x0000);
|
|
ifp->if_capenable |= IFCAP_POLLING;
|
|
VR_UNLOCK(sc);
|
|
return (error);
|
|
|
|
}
|
|
if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
|
|
ifp->if_capenable & IFCAP_POLLING) {
|
|
error = ether_poll_deregister(ifp);
|
|
/* Enable interrupts. */
|
|
VR_LOCK(sc);
|
|
CSR_WRITE_2(sc, VR_IMR, VR_INTRS);
|
|
ifp->if_capenable &= ~IFCAP_POLLING;
|
|
VR_UNLOCK(sc);
|
|
return (error);
|
|
}
|
|
#endif /* DEVICE_POLLING */
|
|
ifp->if_capenable = ifr->ifr_reqcap;
|
|
if (ifp->if_capenable & IFCAP_TXCSUM)
|
|
ifp->if_hwassist = (CSUM_IP | CSUM_TCP | CSUM_UDP);
|
|
else
|
|
ifp->if_hwassist = 0;
|
|
break;
|
|
default:
|
|
error = ether_ioctl(ifp, command, data);
|
|
break;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
vr_watchdog(struct ifnet *ifp)
|
|
{
|
|
struct vr_softc *sc = ifp->if_softc;
|
|
|
|
VR_LOCK(sc);
|
|
|
|
ifp->if_oerrors++;
|
|
if_printf(ifp, "watchdog timeout\n");
|
|
|
|
vr_stop(sc);
|
|
vr_reset(sc);
|
|
vr_init_locked(sc);
|
|
|
|
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
|
|
vr_start_locked(ifp);
|
|
|
|
VR_UNLOCK(sc);
|
|
}
|
|
|
|
/*
|
|
* Stop the adapter and free any mbufs allocated to the
|
|
* RX and TX lists.
|
|
*/
|
|
static void
|
|
vr_stop(struct vr_softc *sc)
|
|
{
|
|
register int i;
|
|
struct ifnet *ifp;
|
|
|
|
VR_LOCK_ASSERT(sc);
|
|
|
|
ifp = sc->vr_ifp;
|
|
ifp->if_timer = 0;
|
|
|
|
callout_stop(&sc->vr_stat_callout);
|
|
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
|
|
|
|
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_ldata->vr_rx_list[i].vr_mbuf != NULL)
|
|
m_freem(sc->vr_ldata->vr_rx_list[i].vr_mbuf);
|
|
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_ldata->vr_tx_list[i].vr_mbuf != NULL)
|
|
m_freem(sc->vr_ldata->vr_tx_list[i].vr_mbuf);
|
|
bzero((char *)&sc->vr_ldata->vr_tx_list,
|
|
sizeof(sc->vr_ldata->vr_tx_list));
|
|
}
|
|
|
|
/*
|
|
* Stop all chip I/O so that the kernel's probe routines don't
|
|
* get confused by errant DMAs when rebooting.
|
|
*/
|
|
static int
|
|
vr_shutdown(device_t dev)
|
|
{
|
|
|
|
vr_detach(dev);
|
|
|
|
return (0);
|
|
}
|