/* $OpenBSD: if_ral_cardbus.c,v 1.4 2005/02/22 10:40:46 damien Exp $ */ /*- * Copyright (c) 2005 * Damien Bergamini * * 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 "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include 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; /* 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); printf(": irq %d", csc->sc_intrline); 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("%s: could not establish interrupt at %d\n", sc->sc_dev.dv_xname, csc->sc_intrline); Cardbus_function_disable(ct); return 1; } 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); }