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/* $OpenBSD: if_ral_cardbus.c,v 1.1 2005/02/15 20:51:18 damien Exp $ */
/*-
* Copyright (c) 2005
* Damien Bergamini <damien.bergamini@free.fr>
*
* 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.
*/
/*
* CardBus front-end for the Ralink RT2500 driver.
*/
#include <sys/param.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/timeout.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_rssadapt.h>
#include <net80211/ieee80211_radiotap.h>
#include <dev/ic/ralvar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/cardbus/cardbusvar.h>
struct ral_cardbus_softc {
struct ral_softc sc_sc;
/* cardbus specific goo */
cardbus_devfunc_t sc_ct;
cardbustag_t sc_tag;
void *sc_ih;
bus_size_t sc_mapsize;
pcireg_t sc_bar_val;
int sc_intrline;
};
int ral_cardbus_match(struct device *, void *, void *);
void ral_cardbus_attach(struct device *, struct device *, void *);
int ral_cardbus_detach(struct device *, int);
struct cfattach ral_cardbus_ca = {
sizeof (struct ral_cardbus_softc), ral_cardbus_match,
ral_cardbus_attach, ral_cardbus_detach
};
int ral_cardbus_enable(struct ral_softc *);
void ral_cardbus_disable(struct ral_softc *);
void ral_cardbus_power(struct ral_softc *, int);
void ral_cardbus_setup(struct ral_cardbus_softc *);
int
ral_cardbus_match(struct device *parent, void *match, void *aux)
{
struct cardbus_attach_args *ca = aux;
if (CARDBUS_VENDOR(ca->ca_id) == PCI_VENDOR_RALINK &&
CARDBUS_PRODUCT(ca->ca_id) == PCI_PRODUCT_RALINK_RT2560)
return 1;
return 0;
}
void
ral_cardbus_attach(struct device *parent, struct device *self, void *aux)
{
struct ral_cardbus_softc *csc = (struct ral_cardbus_softc *)self;
struct ral_softc *sc = &csc->sc_sc;
struct cardbus_attach_args *ca = aux;
cardbus_devfunc_t ct = ca->ca_ct;
bus_addr_t base;
int error;
sc->sc_dmat = ca->ca_dmat;
csc->sc_ct = ct;
csc->sc_tag = ca->ca_tag;
csc->sc_intrline = ca->ca_intrline;
printf("\n");
/* power management hooks */
sc->sc_enable = ral_cardbus_enable;
sc->sc_disable = ral_cardbus_disable;
sc->sc_power = ral_cardbus_power;
/* map control/status registers */
error = Cardbus_mapreg_map(ct, CARDBUS_BASE0_REG,
CARDBUS_MAPREG_TYPE_MEM, 0, &sc->sc_st, &sc->sc_sh, &base,
&csc->sc_mapsize);
if (error != 0) {
printf(": could not map memory space\n");
return;
}
#if rbus
#else
(*cf->cardbus_mem_open)(cc, 0, base, base + csc->sc_mapsize);
#endif
csc->sc_bar_val = base | CARDBUS_MAPREG_TYPE_MEM;
/* set up the PCI configuration registers */
ral_cardbus_setup(csc);
ral_attach(sc);
Cardbus_function_disable(ct);
}
int
ral_cardbus_detach(struct device *self, int flags)
{
struct ral_cardbus_softc *csc = (struct ral_cardbus_softc *)self;
struct ral_softc *sc = &csc->sc_sc;
cardbus_devfunc_t ct = csc->sc_ct;
cardbus_chipset_tag_t cc = ct->ct_cc;
cardbus_function_tag_t cf = ct->ct_cf;
int error;
error = ral_detach(sc);
if (error != 0)
return error;
/* unhook the interrupt handler */
if (csc->sc_ih != NULL) {
cardbus_intr_disestablish(cc, cf, csc->sc_ih);
csc->sc_ih = NULL;
}
/* release bus space and close window */
Cardbus_mapreg_unmap(ct, CARDBUS_BASE0_REG, sc->sc_st, sc->sc_sh,
csc->sc_mapsize);
return 0;
}
int
ral_cardbus_enable(struct ral_softc *sc)
{
struct ral_cardbus_softc *csc = (struct ral_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);
/* setup the PCI configuration registers */
ral_cardbus_setup(csc);
/* map and establish the interrupt handler */
csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET,
ral_intr, sc);
if (csc->sc_ih == NULL) {
printf(": could not establish interrupt\n");
Cardbus_function_disable(ct);
return 1;
}
printf(" irq %d\n", csc->sc_intrline);
return 0;
}
void
ral_cardbus_disable(struct ral_softc *sc)
{
struct ral_cardbus_softc *csc = (struct ral_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);
}
void
ral_cardbus_power(struct ral_softc *sc, int why)
{
struct ral_cardbus_softc *csc = (struct ral_cardbus_softc *)sc;
if (why == PWR_RESUME) {
/* kick the PCI configuration registers */
ral_cardbus_setup(csc);
}
}
void
ral_cardbus_setup(struct ral_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;
/* program the BAR */
cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_BASE0_REG,
csc->sc_bar_val);
/* make sure the right access type is on the cardbus bridge */
(*cf->cardbus_ctrl)(cc, CARDBUS_MEM_ENABLE);
(*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_MASTER_ENABLE | CARDBUS_COMMAND_MEM_ENABLE;
cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_COMMAND_STATUS_REG,
reg);
}
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