NetBSD/sys/dev/pci/if_wi_pci.c

330 lines
8.9 KiB
C

/* $NetBSD: if_wi_pci.c,v 1.7 2002/04/04 17:43:33 jdolecek Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Hideaki Imaizumi <hiddy@sfc.wide.ad.jp>
* and Ichiro FUKUHARA (ichiro@ichiro.org).
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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 Intersil PCI WaveLan.
* Works with Prism2.5 Mini-PCI wavelan.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_wi_pci.c,v 1.7 2002/04/04 17:43:33 jdolecek Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/syslog.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <sys/callout.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <net/if_ieee80211.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/ic/wi_ieee.h>
#include <dev/ic/wireg.h>
#include <dev/ic/wivar.h>
#define WI_PCI_PLX_LOMEM 0x10 /* PLX chip membase */
#define WI_PCI_PLX_LOIO 0x14 /* PLX chip iobase */
#define WI_PCI_LOMEM 0x18 /* ISA membase */
#define WI_PCI_LOIO 0x1C /* ISA iobase */
#define WI_PLX_COR_OFFSET 0x3E0
#define WI_PLX_COR_VALUE 0x41
struct wi_pci_softc {
struct wi_softc psc_wi; /* real "wi" softc */
/* PCI-specific goo */
pci_intr_handle_t psc_ih;
struct pci_attach_args *psc_pa;
void *sc_powerhook; /* power hook descriptor */
};
static int wi_pci_match __P((struct device *, struct cfdata *, void *));
static void wi_pci_attach __P((struct device *, struct device *, void *));
static int wi_pci_enable __P((struct wi_softc *));
static void wi_pci_disable __P((struct wi_softc *));
static void wi_pci_reset __P((struct wi_softc *));
static void wi_pci_powerhook __P((int, void *));
static const struct wi_pci_product
*wi_pci_lookup __P((struct pci_attach_args *));
struct cfattach wi_pci_ca = {
sizeof(struct wi_pci_softc), wi_pci_match, wi_pci_attach
};
const struct wi_pci_product {
pci_vendor_id_t wpp_vendor; /* vendor ID */
pci_product_id_t wpp_product; /* product ID */
const char *wpp_name; /* product name */
int wpp_plx; /* uses PLX chip */
} wi_pci_products[] = {
{ PCI_VENDOR_GLOBALSUN, PCI_PRODUCT_GLOBALSUN_GL24110P,
NULL, 1 },
{ PCI_VENDOR_GLOBALSUN, PCI_PRODUCT_GLOBALSUN_GL24110P02,
NULL, 1 },
{ PCI_VENDOR_EUMITCOM, PCI_PRODUCT_EUMITCOM_WL11000P,
NULL, 1 },
{ PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRWE777A,
NULL, 1 },
{ PCI_VENDOR_NETGEAR, PCI_PRODUCT_NETGEAR_MA301,
NULL, 1 },
{ PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_MINI_PCI_WLAN,
"Intersil Prism2.5", 0 },
{ 0, 0,
NULL, 0},
};
static int
wi_pci_enable(sc)
struct wi_softc *sc;
{
struct wi_pci_softc *psc = (struct wi_pci_softc *)sc;
/* establish the interrupt. */
sc->sc_ih = pci_intr_establish(psc->psc_pa->pa_pc,
psc->psc_ih, IPL_NET, wi_intr, sc);
if (sc->sc_ih == NULL) {
printf("%s: couldn't establish interrupt\n",
sc->sc_dev.dv_xname);
return (EIO);
}
/* reset HFA3842 MAC core */
wi_pci_reset(sc);
return (0);
}
static void
wi_pci_disable(sc)
struct wi_softc *sc;
{
struct wi_pci_softc *psc = (struct wi_pci_softc *)sc;
pci_intr_disestablish(psc->psc_pa->pa_pc, sc->sc_ih);
}
static void
wi_pci_reset(sc)
struct wi_softc *sc;
{
bus_space_write_2(sc->sc_iot, sc->sc_ioh,
WI_PCI_COR, WI_PCI_SOFT_RESET);
DELAY(100*1000); /* 100 m sec */
bus_space_write_2(sc->sc_iot, sc->sc_ioh, WI_PCI_COR, 0x0);
DELAY(100*1000); /* 100 m sec */
return;
}
static const struct wi_pci_product *
wi_pci_lookup(pa)
struct pci_attach_args *pa;
{
const struct wi_pci_product *wpp;
for (wpp = wi_pci_products; wpp->wpp_vendor != 0; wpp++) {
if (PCI_VENDOR(pa->pa_id) == wpp->wpp_vendor &&
PCI_PRODUCT(pa->pa_id) == wpp->wpp_product)
return (wpp);
}
return (NULL);
}
static int
wi_pci_match(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct pci_attach_args *pa = aux;
if (wi_pci_lookup(pa) != NULL)
return (1);
return (0);
}
static void
wi_pci_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct wi_pci_softc *psc = (struct wi_pci_softc *)self;
struct wi_softc *sc = &psc->psc_wi;
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
const char *intrstr;
const struct wi_pci_product *wpp;
pci_intr_handle_t ih;
bus_space_tag_t memt, iot;
bus_space_handle_t memh, ioh;
psc->psc_pa = pa;
wpp = wi_pci_lookup(pa);
#ifdef DIAGNOSTIC
if (wpp == NULL) {
printf("\n");
panic("wi_pci_attach: impossible");
}
#endif
if (wpp->wpp_plx) {
/* Map memory and I/O registers. */
if (pci_mapreg_map(pa, WI_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0,
&memt, &memh, NULL, NULL) != 0) {
printf(": can't map mem space\n");
return;
}
if (pci_mapreg_map(pa, WI_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
&iot, &ioh, NULL, NULL) != 0) {
printf(": can't map I/O space\n");
return;
}
} else {
if (pci_mapreg_map(pa, WI_PCI_CBMA,
PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT,
0, &iot, &ioh, NULL, NULL) != 0) {
printf(": can't map mem space\n");
return;
}
memt = iot;
memh = ioh;
sc->sc_pci = 1;
}
if (wpp->wpp_name != NULL) {
printf(": %s Wireless Lan\n", wpp->wpp_name);
} else {
char devinfo[256];
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
printf(": %s (rev. 0x%02x)\n", devinfo,
PCI_REVISION(pa->pa_class));
}
sc->sc_enabled = 1;
sc->sc_enable = wi_pci_enable;
sc->sc_disable = wi_pci_disable;
/* Enable the card. */
pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
PCI_COMMAND_MASTER_ENABLE);
sc->sc_iot = iot;
sc->sc_ioh = ioh;
/* Make sure interrupts are disabled. */
CSR_WRITE_2(sc, WI_INT_EN, 0);
CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF);
/* Map and establish the interrupt. */
if (pci_intr_map(pa, &ih)) {
printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname);
return;
}
intrstr = pci_intr_string(pc, ih);
psc->psc_ih = ih;
sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, wi_intr, sc);
if (sc->sc_ih == NULL) {
printf("%s: couldn't establish interrupt",
sc->sc_dev.dv_xname);
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
return;
}
printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
if (wpp->wpp_plx) {
/*
* Setup the PLX chip for level interrupts and config index 1
* XXX - should really reset the PLX chip too.
*/
bus_space_write_1(memt, memh,
WI_PLX_COR_OFFSET, WI_PLX_COR_VALUE);
} else {
/* reset HFA3842 MAC core */
wi_pci_reset(sc);
}
printf("%s:", sc->sc_dev.dv_xname);
sc->sc_ifp = &sc->sc_ethercom.ec_if;
if (wi_attach(sc) != 0) {
printf("%s: failed to attach controller\n",
sc->sc_dev.dv_xname);
pci_intr_disestablish(pa->pa_pc, sc->sc_ih);
return;
}
/* Add a suspend hook to restore PCI config state */
psc->sc_powerhook = powerhook_establish(wi_pci_powerhook, psc);
if (psc->sc_powerhook == NULL)
printf ("%s: WARNING: unable to establish pci power hook\n",
sc->sc_dev.dv_xname);
}
static void
wi_pci_powerhook(why, arg)
int why;
void *arg;
{
struct wi_pci_softc *psc = arg;
struct wi_softc *sc = &psc->psc_wi;
wi_power(sc, why);
}