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/*-
* Copyright (c) 1994-2000
* Paul Richards. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* verbatim and that no modifications are made prior to this
* point in the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name Paul Richards may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL PAUL RICHARDS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/lnc/if_lncreg.h>
#include <dev/lnc/if_lncvar.h>
#define AMD_VENDOR_ID 0x1022
#define PCI_DEVICE_ID_PCNet_PCI 0x2000
#define PCI_DEVICE_ID_PCHome_PCI 0x2001
#define LNC_PROBE_PRIORITY -1
static int
lnc_pci_probe(device_t dev)
{
if (pci_get_vendor(dev) != AMD_VENDOR_ID)
return (ENXIO);
switch(pci_get_device(dev)) {
case PCI_DEVICE_ID_PCNet_PCI:
device_set_desc(dev, "PCNet/PCI Ethernet adapter");
return(LNC_PROBE_PRIORITY);
break;
case PCI_DEVICE_ID_PCHome_PCI:
device_set_desc(dev, "PCHome/PCI Ethernet adapter");
return(LNC_PROBE_PRIORITY);
break;
default:
return (ENXIO);
break;
}
return (ENXIO);
}
static void
lnc_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error)
{
/* Do nothing */
return;
}
static int
lnc_pci_attach(device_t dev)
{
lnc_softc_t *sc = device_get_softc(dev);
unsigned command;
int err = 0;
bus_size_t lnc_mem_size;
device_printf(dev, "Attaching %s\n", device_get_desc(dev));
command = pci_read_config(dev, PCIR_COMMAND, 4);
command |= PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN;
pci_write_config(dev, PCIR_COMMAND, command, 4);
sc->portrid = PCIR_BAR(0);
sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &sc->portrid,
RF_ACTIVE);
if (! sc->portres) {
device_printf(dev, "Cannot allocate I/O ports\n");
lnc_release_resources(dev);
return (ENXIO);
}
sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqrid,
RF_ACTIVE|RF_SHAREABLE);
if (! sc->irqres) {
device_printf(dev, "Cannot allocate irq\n");
lnc_release_resources(dev);
return (ENXIO);
}
err = bus_setup_intr(dev, sc->irqres, INTR_TYPE_NET, lncintr,
sc, &sc->intrhand);
if (err) {
device_printf(dev, "Cannot setup irq handler\n");
lnc_release_resources(dev);
return (ENXIO);
}
sc->lnc_btag = rman_get_bustag(sc->portres);
sc->lnc_bhandle = rman_get_bushandle(sc->portres);
/* XXX temp setting for nic */
sc->nic.ic = PCnet_PCI;
sc->nic.ident = NE2100;
sc->nic.mem_mode = DMA_FIXED;
sc->nrdre = NRDRE;
sc->ntdre = NTDRE;
sc->rap = PCNET_RAP;
sc->rdp = PCNET_RDP;
sc->bdp = PCNET_BDP;
/* Create a DMA tag describing the ring memory we need */
lnc_mem_size = ((NDESC(sc->nrdre) + NDESC(sc->ntdre)) *
sizeof(struct host_ring_entry));
lnc_mem_size += sizeof(struct init_block) + (sizeof(struct mds) *
(NDESC(sc->nrdre) + NDESC(sc->ntdre))) + MEM_SLEW;
lnc_mem_size += (NDESC(sc->nrdre) * RECVBUFSIZE) +
(NDESC(sc->ntdre) * TRANSBUFSIZE);
err = bus_dma_tag_create(NULL, /* parent */
1, /* alignement */
0, /* boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
lnc_mem_size, /* segsize */
1, /* nsegments */
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
0, /* flags */
busdma_lock_mutex, /* lockfunc */
&Giant, /* lockarg */
&sc->dmat);
if (err) {
device_printf(dev, "Can't create DMA tag\n");
lnc_release_resources(dev);
return (ENOMEM);
}
err = bus_dmamem_alloc(sc->dmat, (void **)&sc->recv_ring,
BUS_DMA_NOWAIT, &sc->dmamap);
if (err) {
device_printf(dev, "Couldn't allocate memory\n");
lnc_release_resources(dev);
return (ENOMEM);
}
bus_dmamap_load(sc->dmat, sc->dmamap, sc->recv_ring, lnc_mem_size,
lnc_alloc_callback, sc->recv_ring, BUS_DMA_NOWAIT);
/* Call generic attach code */
if (! lnc_attach_common(dev)) {
device_printf(dev, "Generic attach code failed\n");
lnc_release_resources(dev);
return (ENXIO);
}
return (0);
}
static int
lnc_pci_detach(device_t dev)
{
lnc_softc_t *sc = device_get_softc(dev);
int s = splimp();
ether_ifdetach(&sc->arpcom.ac_if);
lnc_stop(sc);
bus_teardown_intr(dev, sc->irqres, sc->intrhand);
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irqres);
bus_release_resource(dev, SYS_RES_IOPORT, PCIR_BAR(0), sc->portres);
bus_dmamap_unload(sc->dmat, sc->dmamap);
bus_dmamem_free(sc->dmat, sc->recv_ring, sc->dmamap);
bus_dma_tag_destroy(sc->dmat);
splx(s);
return (0);
}
static device_method_t lnc_pci_methods[] = {
DEVMETHOD(device_probe, lnc_pci_probe),
DEVMETHOD(device_attach, lnc_pci_attach),
DEVMETHOD(device_detach, lnc_pci_detach),
#ifdef notyet
DEVMETHOD(device_suspend, lnc_pci_suspend),
DEVMETHOD(device_resume, lnc_pci_resume),
DEVMETHOD(device_shutdown, lnc_pci_shutdown),
#endif
{ 0, 0 }
};
static driver_t lnc_pci_driver = {
"lnc",
lnc_pci_methods,
sizeof(struct lnc_softc),
};
DRIVER_MODULE(lnc, pci, lnc_pci_driver, lnc_devclass, 0, 0);
MODULE_DEPEND(lnc, pci, 1, 1, 1);
MODULE_DEPEND(lnc, ether, 1, 1, 1);
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