236 lines
6.5 KiB
C
236 lines
6.5 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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.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 <dev/pci/pcireg.h>
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#include <dev/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 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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sc->portrid = PCIR_BAR(0);
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sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &sc->portrid,
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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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lnc_release_resources(dev);
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return (ENXIO);
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}
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sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqrid,
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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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lnc_release_resources(dev);
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return (ENXIO);
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}
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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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lnc_release_resources(dev);
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return (ENXIO);
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}
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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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busdma_lock_mutex, /* lockfunc */
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&Giant, /* lockarg */
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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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lnc_release_resources(dev);
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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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lnc_release_resources(dev);
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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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lnc_release_resources(dev);
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return (ENXIO);
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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);
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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_BAR(0), 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, lnc_pci_driver, lnc_devclass, 0, 0);
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MODULE_DEPEND(lnc, pci, 1, 1, 1);
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MODULE_DEPEND(lnc, ether, 1, 1, 1);
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