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783e9b1a7a
newbus in revision 1.19. As a result, lnc was, I believe, broken for all PCI cards. The softc fields `lnc_btag' and `lnc_bhandle' were not initialised, `rap', `rdp' and `bdp' were initialised to the wrong values, and the size of the DMA ring memory was calculated incorrectly. Paul Richards has further cleanups in the pipeline, but this at least is enough to make the driver usable with VMware. Approved by: paul
227 lines
6.3 KiB
C
227 lines
6.3 KiB
C
/*
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* Copyright (c) 1994-2000
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* Paul Richards. 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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* verbatim and that no modifications are made prior to this
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* point in the file.
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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. The name Paul Richards may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``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 PAUL RICHARDS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/socket.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <machine/bus_memio.h>
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#include <machine/bus_pio.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 <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <pci/pcireg.h>
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#include <pci/pcivar.h>
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#include <dev/lnc/if_lncreg.h>
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#include <dev/lnc/if_lncvar.h>
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#define AMD_VENDOR_ID 0x1022
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#define PCI_DEVICE_ID_PCNet_PCI 0x2000
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#define PCI_DEVICE_ID_PCHome_PCI 0x2001
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#define LNC_PROBE_PRIORITY -1
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static int
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lnc_pci_probe(device_t dev)
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{
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if (pci_get_vendor(dev) != AMD_VENDOR_ID)
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return (ENXIO);
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switch(pci_get_device(dev)) {
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case PCI_DEVICE_ID_PCNet_PCI:
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device_set_desc(dev, "PCNet/PCI Ethernet adapter");
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return(LNC_PROBE_PRIORITY);
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break;
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case PCI_DEVICE_ID_PCHome_PCI:
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device_set_desc(dev, "PCHome/PCI Ethernet adapter");
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return(LNC_PROBE_PRIORITY);
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break;
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default:
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return (ENXIO);
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break;
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}
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return (ENXIO);
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}
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static void
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lnc_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error)
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{
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/* Do nothing */
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return;
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}
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static int
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lnc_pci_attach(device_t dev)
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{
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lnc_softc_t *sc = device_get_softc(dev);
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unsigned command;
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int rid = 0;
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int err = 0;
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bus_size_t lnc_mem_size;
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device_printf(dev, "Attaching %s\n", device_get_desc(dev));
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command = pci_read_config(dev, PCIR_COMMAND, 4);
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command |= PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN;
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pci_write_config(dev, PCIR_COMMAND, command, 4);
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rid = PCIR_MAPS;
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sc->portres = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
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RF_ACTIVE);
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if (! sc->portres)
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device_printf(dev, "Cannot allocate I/O ports\n");
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rid = 0;
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sc->irqres = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
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RF_ACTIVE|RF_SHAREABLE);
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if (! sc->irqres)
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device_printf(dev, "Cannot allocate irq\n");
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err = bus_setup_intr(dev, sc->irqres, INTR_TYPE_NET, lncintr,
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sc, &sc->intrhand);
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if (err)
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device_printf(dev, "Cannot setup irq handler\n");
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sc->iobase = rman_get_start(sc->portres);
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sc->lnc_btag = rman_get_bustag(sc->portres);
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sc->lnc_bhandle = rman_get_bushandle(sc->portres);
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/* XXX temp setting for nic */
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sc->nic.ic = PCnet_PCI;
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sc->nic.ident = NE2100;
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sc->nic.mem_mode = DMA_FIXED;
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sc->nrdre = NRDRE;
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sc->ntdre = NTDRE;
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sc->rap = PCNET_RAP;
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sc->rdp = PCNET_RDP;
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sc->bdp = PCNET_BDP;
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/* Create a DMA tag describing the ring memory we need */
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lnc_mem_size = ((NDESC(sc->nrdre) + NDESC(sc->ntdre)) *
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sizeof(struct host_ring_entry));
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lnc_mem_size += sizeof(struct init_block) + (sizeof(struct mds) *
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(NDESC(sc->nrdre) + NDESC(sc->ntdre))) + MEM_SLEW;
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lnc_mem_size += (NDESC(sc->nrdre) * RECVBUFSIZE) +
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(NDESC(sc->ntdre) * TRANSBUFSIZE);
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err = bus_dma_tag_create(NULL, /* parent */
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1, /* alignement */
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0, /* boundary */
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BUS_SPACE_MAXADDR, /* lowaddr */
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BUS_SPACE_MAXADDR, /* highaddr */
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NULL, NULL, /* filter, filterarg */
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lnc_mem_size, /* segsize */
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1, /* nsegments */
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BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
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0, /* flags */
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&sc->dmat);
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if (err) {
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device_printf(dev, "Can't create DMA tag\n");
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/* XXX need to free currently allocated resources here */
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return (ENOMEM);
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}
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err = bus_dmamem_alloc(sc->dmat, (void **)&sc->recv_ring,
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BUS_DMA_NOWAIT, &sc->dmamap);
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if (err) {
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device_printf(dev, "Couldn't allocate memory\n");
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/* XXX need to free currently allocated resources here */
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return (ENOMEM);
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}
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bus_dmamap_load(sc->dmat, sc->dmamap, sc->recv_ring, lnc_mem_size,
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lnc_alloc_callback, sc->recv_ring, BUS_DMA_NOWAIT);
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/* Call generic attach code */
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if (! lnc_attach_common(dev)) {
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device_printf(dev, "Generic attach code failed\n");
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}
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return (0);
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}
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static int
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lnc_pci_detach(device_t dev)
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{
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lnc_softc_t *sc = device_get_softc(dev);
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int s = splimp();
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ether_ifdetach(&sc->arpcom.ac_if, ETHER_BPF_SUPPORTED);
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lnc_stop(sc);
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bus_teardown_intr(dev, sc->irqres, sc->intrhand);
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bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irqres);
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bus_release_resource(dev, SYS_RES_IOPORT, PCIR_MAPS, sc->portres);
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bus_dmamap_unload(sc->dmat, sc->dmamap);
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bus_dmamem_free(sc->dmat, sc->recv_ring, sc->dmamap);
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bus_dma_tag_destroy(sc->dmat);
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splx(s);
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return (0);
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}
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static device_method_t lnc_pci_methods[] = {
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DEVMETHOD(device_probe, lnc_pci_probe),
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DEVMETHOD(device_attach, lnc_pci_attach),
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DEVMETHOD(device_detach, lnc_pci_detach),
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#ifdef notyet
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DEVMETHOD(device_suspend, lnc_pci_suspend),
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DEVMETHOD(device_resume, lnc_pci_resume),
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DEVMETHOD(device_shutdown, lnc_pci_shutdown),
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#endif
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{ 0, 0 }
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};
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static driver_t lnc_pci_driver = {
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"lnc",
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lnc_pci_methods,
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sizeof(struct lnc_softc),
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};
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DRIVER_MODULE(lnc_pci, pci, lnc_pci_driver, lnc_devclass, 0, 0);
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