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/* $OpenBSD: if_atw_pci.c,v 1.20 2024/05/24 06:02:53 jsg Exp $ */
/* $NetBSD: if_atw_pci.c,v 1.7 2004/07/23 07:07:55 dyoung Exp $ */
/*-
* Copyright (c) 1998, 1999, 2000, 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center; Charles M. Hannum; and David Young.
*
* 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.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 THE FOUNDATION OR CONTRIBUTORS
* 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.
*/
/*
* PCI bus front-end for the ADMtek ADM8211 802.11 MAC/BBP chip.
*
* Derived from the ``Tulip'' PCI bus front-end.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <net/if.h>
#include <net/if_media.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <net80211/ieee80211_radiotap.h>
#include <net80211/ieee80211_var.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/ic/atwreg.h>
#include <dev/ic/atwvar.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
/*
* PCI configuration space registers used by the ADM8211.
*/
#define ATW_PCI_IOBA 0x10 /* i/o mapped base */
#define ATW_PCI_MMBA 0x14 /* memory mapped base */
struct atw_pci_softc {
struct atw_softc psc_atw; /* real ADM8211 softc */
pci_intr_handle_t psc_ih; /* interrupt handle */
void *psc_intrcookie;
pci_chipset_tag_t psc_pc; /* our PCI chipset */
pcitag_t psc_pcitag; /* our PCI tag */
};
int atw_pci_match(struct device *, void *, void *);
void atw_pci_attach(struct device *, struct device *, void *);
int atw_pci_detach(struct device *, int);
const struct cfattach atw_pci_ca = {
sizeof (struct atw_softc), atw_pci_match, atw_pci_attach, atw_pci_detach,
atw_activate
};
const struct pci_matchid atw_pci_devices[] = {
{ PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211 },
{ PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRSHPW796 }
};
int
atw_pci_match(struct device *parent, void *match, void *aux)
{
return (pci_matchbyid((struct pci_attach_args *)aux, atw_pci_devices,
nitems(atw_pci_devices)));
}
static int
atw_pci_enable(struct atw_softc *sc)
{
struct atw_pci_softc *psc = (void *)sc;
/* Establish the interrupt. */
psc->psc_intrcookie = pci_intr_establish(psc->psc_pc, psc->psc_ih,
IPL_NET, atw_intr, sc, sc->sc_dev.dv_xname);
if (psc->psc_intrcookie == NULL) {
printf("%s: unable to establish interrupt\n",
sc->sc_dev.dv_xname);
return (1);
}
return (0);
}
static void
atw_pci_disable(struct atw_softc *sc)
{
struct atw_pci_softc *psc = (void *)sc;
/* Unhook the interrupt handler. */
pci_intr_disestablish(psc->psc_pc, psc->psc_intrcookie);
psc->psc_intrcookie = NULL;
}
void
atw_pci_attach(struct device *parent, struct device *self, void *aux)
{
struct atw_pci_softc *psc = (void *) self;
struct atw_softc *sc = &psc->psc_atw;
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
const char *intrstr = NULL;
bus_space_tag_t iot, memt;
bus_space_handle_t ioh, memh;
bus_size_t iosize, memsize;
int ioh_valid, memh_valid;
psc->psc_pc = pa->pa_pc;
psc->psc_pcitag = pa->pa_tag;
/*
* No power management hooks.
* XXX Maybe we should add some!
*/
sc->sc_flags |= ATWF_ENABLED;
/*
* Get revision info, and set some chip-specific variables.
*/
sc->sc_rev = PCI_REVISION(pa->pa_class);
/*
* Check to see if the device is in power-save mode, and
* being it out if necessary.
*
* XXX This code comes almost verbatim from if_tlp_pci.c. I do
* not understand it. Tulip clears the "sleep mode" bit in the
* CFDA register, first. There is an equivalent (?) register at the
* same place in the ADM8211, but the docs do not assign its bits
* any meanings. -dcy
*/
pci_set_powerstate(pc, pa->pa_tag, PCI_PMCSR_STATE_D0);
/*
* Map the device.
*/
ioh_valid = (pci_mapreg_map(pa, ATW_PCI_IOBA,
PCI_MAPREG_TYPE_IO, 0,
&iot, &ioh, NULL, &iosize, 0) == 0);
memh_valid = (pci_mapreg_map(pa, ATW_PCI_MMBA,
PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0,
&memt, &memh, NULL, &memsize, 0) == 0);
if (memh_valid) {
sc->sc_st = memt;
sc->sc_sh = memh;
sc->sc_mapsize = memsize;
} else if (ioh_valid) {
sc->sc_st = iot;
sc->sc_sh = ioh;
sc->sc_mapsize = iosize;
} else {
printf(": unable to map device registers\n");
return;
}
sc->sc_dmat = pa->pa_dmat;
/*
* Get the cacheline size.
*/
sc->sc_cacheline = PCI_CACHELINE(pci_conf_read(pc, pa->pa_tag,
PCI_BHLC_REG));
/*
* Get PCI data moving command info.
*/
if (pa->pa_flags & PCI_FLAGS_MRL_OKAY) /* read line */
sc->sc_flags |= ATWF_MRL;
if (pa->pa_flags & PCI_FLAGS_MRM_OKAY) /* read multiple */
sc->sc_flags |= ATWF_MRM;
if (pa->pa_flags & PCI_FLAGS_MWI_OKAY) /* write invalidate */
sc->sc_flags |= ATWF_MWI;
/*
* Map and establish our interrupt.
*/
if (pci_intr_map(pa, &psc->psc_ih)) {
printf(": unable to map interrupt\n");
return;
}
intrstr = pci_intr_string(pc, psc->psc_ih);
psc->psc_intrcookie = pci_intr_establish(pc, psc->psc_ih, IPL_NET,
atw_intr, sc, sc->sc_dev.dv_xname);
if (psc->psc_intrcookie == NULL) {
printf(": unable to establish interrupt");
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
return;
}
printf(": %s\n", intrstr);
sc->sc_enable = atw_pci_enable;
sc->sc_disable = atw_pci_disable;
/*
* Finish off the attach.
*/
atw_attach(sc);
}
int
atw_pci_detach(struct device *self, int flags)
{
struct atw_pci_softc *psc = (void *)self;
struct atw_softc *sc = &psc->psc_atw;
int rv;
rv = atw_detach(sc);
if (rv)
return (rv);
if (psc->psc_intrcookie != NULL)
pci_intr_disestablish(psc->psc_pc, psc->psc_intrcookie);
bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_mapsize);
return (0);
}
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