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/* $OpenBSD: gcu.c,v 1.6 2022/03/11 18:00:45 mpi Exp $ */
/*
* Copyright (c) 2009 Dariusz Swiderski <sfires@sfires.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Driver for a GCU device that appears on embedded intel systems, like 80579
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/gcu_var.h>
int gcu_probe(struct device *, void *, void *);
void gcu_attach(struct device *, struct device *, void *);
int gcu_detach(struct device *, int);
const struct pci_matchid gcu_devices[] = {
{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_EP80579_GCU }
};
struct cfdriver gcu_cd = {
NULL, "gcu", DV_IFNET
};
const struct cfattach gcu_ca = {
sizeof(struct gcu_softc), gcu_probe, gcu_attach
};
int
gcu_probe(struct device *parent, void *match, void *aux)
{
return (pci_matchbyid((struct pci_attach_args *)aux, gcu_devices,
nitems(gcu_devices)));
}
void
gcu_attach(struct device *parent, struct device *self, void *aux)
{
struct gcu_softc *sc = (struct gcu_softc *)self;
struct pci_attach_args *pa = aux;
int val;
val = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_START);
if (PCI_MAPREG_TYPE(val) != PCI_MAPREG_TYPE_MEM) {
printf(": mmba is not mem space\n");
return;
}
if (pci_mapreg_map(pa, 0x10, PCI_MAPREG_MEM_TYPE(val), 0, &sc->tag,
&sc->handle, &sc->addr, &sc->size, 0)) {
printf(": cannot find mem space\n");
return;
}
mtx_init(&sc->mdio_mtx, IPL_NET);
printf("\n");
}
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