/* $NetBSD: if_atw_cardbus.c,v 1.19 2007/12/09 20:27:56 jmcneill 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. * 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. */ /* * CardBus bus front-end for the ADMtek ADM8211 802.11 MAC/BBP driver. */ #include __KERNEL_RCSID(0, "$NetBSD: if_atw_cardbus.c,v 1.19 2007/12/09 20:27:56 jmcneill Exp $"); #include "opt_inet.h" #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if NBPFILTER > 0 #include #endif #ifdef INET #include #include #endif #include #include #include #include #include #include #include #include #include #include #include /* * 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 */ int sc_intrline; /* interrupt line */ }; int atw_cardbus_match(struct device *, struct cfdata *, void *); void atw_cardbus_attach(struct device *, struct device *, void *); int atw_cardbus_detach(struct device *, int); CFATTACH_DECL(atw_cardbus, sizeof(struct atw_cardbus_softc), atw_cardbus_match, atw_cardbus_attach, atw_cardbus_detach, atw_activate); void atw_cardbus_setup(struct atw_cardbus_softc *); int atw_cardbus_enable(struct atw_softc *); void atw_cardbus_disable(struct atw_softc *); void atw_cardbus_power(struct atw_softc *, int); static void atw_cardbus_intr_ack(struct atw_softc *); const struct atw_cardbus_product *atw_cardbus_lookup (const struct cardbus_attach_args *); 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 }, }; 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); } int atw_cardbus_match(struct device *parent, struct cfdata *match, void *aux) { struct cardbus_attach_args *ca = aux; if (atw_cardbus_lookup(ca) != NULL) return (1); return (0); } void atw_cardbus_attach(struct device *parent, struct device *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_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_power = atw_cardbus_power; 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", sc->sc_dev.dv_xname, (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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, 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 { printf("%s: unable to map device registers\n", sc->sc_dev.dv_xname); 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; printf("%s: interrupting at %d\n", sc->sc_dev.dv_xname, csc->sc_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); } int atw_cardbus_detach(struct device *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", sc->sc_dev.dv_xname); #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); } int atw_cardbus_enable(struct atw_softc *sc) { struct atw_cardbus_softc *csc = (void *) 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) { printf("%s: unable to establish interrupt at %d\n", sc->sc_dev.dv_xname, csc->sc_intrline); Cardbus_function_disable(csc->sc_ct); return (1); } return (0); } void atw_cardbus_disable(struct atw_softc *sc) { struct atw_cardbus_softc *csc = (void *) 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 atw_cardbus_power(struct atw_softc *sc, int why) { struct atw_cardbus_softc *csc = (void *) sc; printf("%s: atw_cardbus_power\n", sc->sc_dev.dv_xname); if (why == PWR_RESUME) { /* * Give the PCI configuration registers a kick * in the head. */ #ifdef DIAGNOSTIC if (ATW_IS_ENABLED(sc) == 0) panic("atw_cardbus_power"); #endif atw_cardbus_setup(csc); } } 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); } }