NetBSD-5.0.2/sys/dev/cardbus/if_atw_cardbus.c
/* $NetBSD: if_atw_cardbus.c,v 1.24 2008/07/09 20:07:19 joerg Exp $ */
/*-
* Copyright (c) 1999, 2000, 2003 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. This code was adapted for the ADMtek ADM8211
* by 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.
*/
/*
* CardBus bus front-end for the ADMtek ADM8211 802.11 MAC/BBP driver.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_atw_cardbus.c,v 1.24 2008/07/09 20:07:19 joerg Exp $");
#include "opt_inet.h"
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <machine/endian.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_ether.h>
#include <net80211/ieee80211_netbsd.h>
#include <net80211/ieee80211_radiotap.h>
#include <net80211/ieee80211_var.h>
#if NBPFILTER > 0
#include <net/bpf.h>
#endif
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_inarp.h>
#endif
#include <sys/bus.h>
#include <sys/intr.h>
#include <dev/ic/atwreg.h>
#include <dev/ic/rf3000reg.h>
#include <dev/ic/si4136reg.h>
#include <dev/ic/atwvar.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
#include <dev/cardbus/cardbusvar.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_cardbus_softc {
struct atw_softc sc_atw; /* real ADM8211 softc */
/* CardBus-specific goo. */
void *sc_ih; /* interrupt handle */
cardbus_devfunc_t sc_ct; /* our CardBus devfuncs */
cardbustag_t sc_tag; /* our CardBus tag */
int sc_csr; /* CSR bits */
bus_size_t sc_mapsize; /* the size of mapped bus space
region */
int sc_cben; /* CardBus enables */
int sc_bar_reg; /* which BAR to use */
pcireg_t sc_bar_val; /* value of the BAR */
cardbus_intr_line_t sc_intrline; /* interrupt line */
};
static int atw_cardbus_match(device_t, cfdata_t, void *);
static void atw_cardbus_attach(device_t, device_t, void *);
static int atw_cardbus_detach(device_t, int);
CFATTACH_DECL_NEW(atw_cardbus, sizeof(struct atw_cardbus_softc),
atw_cardbus_match, atw_cardbus_attach, atw_cardbus_detach, atw_activate);
static void atw_cardbus_setup(struct atw_cardbus_softc *);
static int atw_cardbus_enable(struct atw_softc *);
static void atw_cardbus_disable(struct atw_softc *);
static void atw_cardbus_intr_ack(struct atw_softc *);
static const struct atw_cardbus_product *atw_cardbus_lookup
(const struct cardbus_attach_args *);
static const struct atw_cardbus_product {
u_int32_t acp_vendor; /* PCI vendor ID */
u_int32_t acp_product; /* PCI product ID */
const char *acp_product_name;
} atw_cardbus_products[] = {
{ PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211,
"ADMtek ADM8211 802.11 MAC/BBP" },
{ 0, 0, NULL },
};
static const struct atw_cardbus_product *
atw_cardbus_lookup(const struct cardbus_attach_args *ca)
{
const struct atw_cardbus_product *acp;
for (acp = atw_cardbus_products;
acp->acp_product_name != NULL;
acp++) {
if (PCI_VENDOR(ca->ca_id) == acp->acp_vendor &&
PCI_PRODUCT(ca->ca_id) == acp->acp_product)
return (acp);
}
return (NULL);
}
static int
atw_cardbus_match(device_t parent, cfdata_t match, void *aux)
{
struct cardbus_attach_args *ca = aux;
if (atw_cardbus_lookup(ca) != NULL)
return (1);
return (0);
}
static void
atw_cardbus_attach(device_t parent, device_t self, void *aux)
{
struct atw_cardbus_softc *csc = device_private(self);
struct atw_softc *sc = &csc->sc_atw;
struct cardbus_attach_args *ca = aux;
cardbus_devfunc_t ct = ca->ca_ct;
const struct atw_cardbus_product *acp;
bus_addr_t adr;
sc->sc_dev = self;
sc->sc_dmat = ca->ca_dmat;
csc->sc_ct = ct;
csc->sc_tag = ca->ca_tag;
acp = atw_cardbus_lookup(ca);
if (acp == NULL) {
printf("\n");
panic("atw_cardbus_attach: impossible");
}
/*
* Power management hooks.
*/
sc->sc_enable = atw_cardbus_enable;
sc->sc_disable = atw_cardbus_disable;
sc->sc_intr_ack = atw_cardbus_intr_ack;
/* Get revision info. */
sc->sc_rev = PCI_REVISION(ca->ca_class);
printf(": %s, revision %d.%d\n", acp->acp_product_name,
(sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf);
#if 0
printf("%s: signature %08x\n", device_xname(self),
(rev >> 4) & 0xf, rev & 0xf,
cardbus_conf_read(ct->ct_cc, ct->ct_cf, csc->sc_tag, 0x80));
#endif
/*
* Map the device.
*/
csc->sc_csr = CARDBUS_COMMAND_MASTER_ENABLE;
if (Cardbus_mapreg_map(ct, ATW_PCI_MMBA,
CARDBUS_MAPREG_TYPE_MEM, 0, &sc->sc_st, &sc->sc_sh, &adr,
&csc->sc_mapsize) == 0) {
#if 0
printf("%s: atw_cardbus_attach mapped %d bytes mem space\n",
device_xname(self), csc->sc_mapsize);
#endif
#if rbus
#else
(*ct->ct_cf->cardbus_mem_open)(cc, 0, adr, adr+csc->sc_mapsize);
#endif
csc->sc_cben = CARDBUS_MEM_ENABLE;
csc->sc_csr |= CARDBUS_COMMAND_MEM_ENABLE;
csc->sc_bar_reg = ATW_PCI_MMBA;
csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_MEM;
} else if (Cardbus_mapreg_map(ct, ATW_PCI_IOBA,
CARDBUS_MAPREG_TYPE_IO, 0, &sc->sc_st, &sc->sc_sh, &adr,
&csc->sc_mapsize) == 0) {
#if 0
printf("%s: atw_cardbus_attach mapped %d bytes I/O space\n",
device_xname(self), csc->sc_mapsize);
#endif
#if rbus
#else
(*ct->ct_cf->cardbus_io_open)(cc, 0, adr, adr+csc->sc_mapsize);
#endif
csc->sc_cben = CARDBUS_IO_ENABLE;
csc->sc_csr |= CARDBUS_COMMAND_IO_ENABLE;
csc->sc_bar_reg = ATW_PCI_IOBA;
csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_IO;
} else {
aprint_error_dev(self, "unable to map device registers\n");
return;
}
/*
* Bring the chip out of powersave mode and initialize the
* configuration registers.
*/
atw_cardbus_setup(csc);
/* Remember which interrupt line. */
csc->sc_intrline = ca->ca_intrline;
#if 0
/*
* The CardBus cards will make it to store-and-forward mode as
* soon as you put them under any kind of load, so just start
* out there.
*/
sc->sc_txthresh = 3; /* TBD name constant */
#endif
/*
* Finish off the attach.
*/
atw_attach(sc);
ATW_WRITE(sc, ATW_FER, ATW_FER_INTR);
/*
* Power down the socket.
*/
Cardbus_function_disable(csc->sc_ct);
}
static void
atw_cardbus_intr_ack(struct atw_softc *sc)
{
ATW_WRITE(sc, ATW_FER, ATW_FER_INTR);
}
static int
atw_cardbus_detach(device_t self, int flags)
{
struct atw_cardbus_softc *csc = device_private(self);
struct atw_softc *sc = &csc->sc_atw;
struct cardbus_devfunc *ct = csc->sc_ct;
int rv;
#if defined(DIAGNOSTIC)
if (ct == NULL)
panic("%s: data structure lacks", device_xname(self));
#endif
rv = atw_detach(sc);
if (rv)
return (rv);
/*
* Unhook the interrupt handler.
*/
if (csc->sc_ih != NULL)
cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, csc->sc_ih);
/*
* Release bus space and close window.
*/
if (csc->sc_bar_reg != 0)
Cardbus_mapreg_unmap(ct, csc->sc_bar_reg,
sc->sc_st, sc->sc_sh, csc->sc_mapsize);
return (0);
}
static int
atw_cardbus_enable(struct atw_softc *sc)
{
struct atw_cardbus_softc *csc = (struct atw_cardbus_softc *)sc;
cardbus_devfunc_t ct = csc->sc_ct;
cardbus_chipset_tag_t cc = ct->ct_cc;
cardbus_function_tag_t cf = ct->ct_cf;
/*
* Power on the socket.
*/
Cardbus_function_enable(ct);
/*
* Set up the PCI configuration registers.
*/
atw_cardbus_setup(csc);
/*
* Map and establish the interrupt.
*/
csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET,
atw_intr, sc);
if (csc->sc_ih == NULL) {
aprint_error_dev(sc->sc_dev,
"unable to establish interrupt\n");
Cardbus_function_disable(csc->sc_ct);
return (1);
}
return (0);
}
static void
atw_cardbus_disable(struct atw_softc *sc)
{
struct atw_cardbus_softc *csc = (struct atw_cardbus_softc *)sc;
cardbus_devfunc_t ct = csc->sc_ct;
cardbus_chipset_tag_t cc = ct->ct_cc;
cardbus_function_tag_t cf = ct->ct_cf;
/* Unhook the interrupt handler. */
cardbus_intr_disestablish(cc, cf, csc->sc_ih);
csc->sc_ih = NULL;
/* Power down the socket. */
Cardbus_function_disable(ct);
}
static void
atw_cardbus_setup(struct atw_cardbus_softc *csc)
{
cardbus_devfunc_t ct = csc->sc_ct;
cardbus_chipset_tag_t cc = ct->ct_cc;
cardbus_function_tag_t cf = ct->ct_cf;
pcireg_t reg;
(void)cardbus_set_powerstate(ct, csc->sc_tag, PCI_PWR_D0);
/* Program the BAR. */
cardbus_conf_write(cc, cf, csc->sc_tag, csc->sc_bar_reg,
csc->sc_bar_val);
/* Make sure the right access type is on the CardBus bridge. */
(*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cben);
(*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
/* Enable the appropriate bits in the PCI CSR. */
reg = cardbus_conf_read(cc, cf, csc->sc_tag,
CARDBUS_COMMAND_STATUS_REG);
reg &= ~(CARDBUS_COMMAND_IO_ENABLE|CARDBUS_COMMAND_MEM_ENABLE);
reg |= csc->sc_csr;
cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_COMMAND_STATUS_REG,
reg);
/*
* Make sure the latency timer is set to some reasonable
* value.
*/
reg = cardbus_conf_read(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG);
if (CARDBUS_LATTIMER(reg) < 0x20) {
reg &= ~(CARDBUS_LATTIMER_MASK << CARDBUS_LATTIMER_SHIFT);
reg |= (0x20 << CARDBUS_LATTIMER_SHIFT);
cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG, reg);
}
}