/* $OpenBSD: if_ath_cardbus.c,v 1.16 2010/09/06 19:20:21 deraadt Exp $ */ /* $NetBSD: if_ath_cardbus.c,v 1.4 2004/08/02 19:14:28 mycroft Exp $ */ /* * Copyright (c) 2003 * Ichiro FUKUHARA . * All rights reserved. * * 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 Ichiro FUKUHARA. * 4. The name of the company nor the name of the author may be used to * endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``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 ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD 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 AR5001 Wireless LAN 802.11a/b/g CardBus. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif #include #include #include #include #include #include #include #include #include #include /* * PCI configuration space registers */ #define ATH_PCI_MMBA 0x10 /* memory mapped base */ struct ath_cardbus_softc { struct ath_softc sc_ath; /* CardBus-specific goo. */ void *sc_ih; /* interrupt handle */ cardbus_devfunc_t sc_ct; /* our CardBus devfuncs */ pcitag_t sc_tag; /* our CardBus tag */ pcireg_t sc_bar_val; /* value of the BAR */ int sc_intrline; /* interrupt line */ pci_chipset_tag_t sc_pc; }; int ath_cardbus_match(struct device *, void *, void *); void ath_cardbus_attach(struct device *, struct device *, void *); int ath_cardbus_detach(struct device *, int); struct cfattach ath_cardbus_ca = { sizeof(struct ath_cardbus_softc), ath_cardbus_match, ath_cardbus_attach, ath_cardbus_detach }; void ath_cardbus_setup(struct ath_cardbus_softc *); int ath_cardbus_enable(struct ath_softc *); void ath_cardbus_disable(struct ath_softc *); void ath_cardbus_power(struct ath_softc *, int); int ath_cardbus_match(struct device *parent, void *match, void *aux) { struct cardbus_attach_args *ca = aux; const char* devname; devname = ath_hal_probe(PCI_VENDOR(ca->ca_id), PCI_PRODUCT(ca->ca_id)); if (devname) return (1); return (0); } void ath_cardbus_attach(struct device *parent, struct device *self, void *aux) { struct ath_cardbus_softc *csc = (void *)self; struct ath_softc *sc = &csc->sc_ath; struct cardbus_attach_args *ca = aux; cardbus_devfunc_t ct = ca->ca_ct; bus_addr_t adr; sc->sc_dmat = ca->ca_dmat; csc->sc_ct = ct; csc->sc_tag = ca->ca_tag; csc->sc_pc = ca->ca_pc; /* * Power management hooks. */ sc->sc_enable = ath_cardbus_enable; sc->sc_disable = ath_cardbus_disable; sc->sc_power = ath_cardbus_power; /* * Map the device. */ if (Cardbus_mapreg_map(ct, ATH_PCI_MMBA, PCI_MAPREG_TYPE_MEM, 0, &sc->sc_st, &sc->sc_sh, &adr, &sc->sc_ss) == 0) { csc->sc_bar_val = adr | PCI_MAPREG_TYPE_MEM; } else { printf(": unable to map device registers\n"); return; } /* * Set up the PCI configuration registers. */ ath_cardbus_setup(csc); /* Remember which interrupt line. */ csc->sc_intrline = ca->ca_intrline; printf(": irq %d\n", csc->sc_intrline); /* * Finish off the attach. */ ath_attach(PCI_PRODUCT(ca->ca_id), sc); /* * Power down the socket. */ Cardbus_function_disable(csc->sc_ct); } int ath_cardbus_detach(struct device *self, int flags) { struct ath_cardbus_softc *csc = (void *)self; struct ath_softc *sc = &csc->sc_ath; 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 = ath_detach(sc, flags); 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); csc->sc_ih = NULL; } /* * Release bus space and close window. */ Cardbus_mapreg_unmap(ct, ATH_PCI_MMBA, sc->sc_st, sc->sc_sh, sc->sc_ss); return (0); } int ath_cardbus_enable(struct ath_softc *sc) { struct ath_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. */ ath_cardbus_setup(csc); /* * Map and establish the interrupt. */ csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET, ath_intr, sc, sc->sc_dev.dv_xname); if (csc->sc_ih == NULL) { printf(": unable to establish irq %d\n", csc->sc_intrline); Cardbus_function_disable(csc->sc_ct); return (1); } return (0); } void ath_cardbus_disable(struct ath_softc *sc) { struct ath_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 ath_cardbus_power(struct ath_softc *sc, int why) { if (why == DVACT_RESUME) ath_enable(sc); } void ath_cardbus_setup(struct ath_cardbus_softc *csc) { cardbus_devfunc_t ct = csc->sc_ct; cardbus_chipset_tag_t cc = ct->ct_cc; pci_chipset_tag_t pc = csc->sc_pc; pcireg_t reg; #ifdef notyet (void)cardbus_setpowerstate(sc->sc_dev.dv_xname, ct, csc->sc_tag, PCI_PWR_D0); #endif /* Program the BAR. */ pci_conf_write(pc, csc->sc_tag, ATH_PCI_MMBA, csc->sc_bar_val); /* Make sure the right access type is on the CardBus bridge. */ (*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_MEM_ENABLE); (*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE); /* Enable the appropriate bits in the PCI CSR. */ reg = pci_conf_read(pc, csc->sc_tag, PCI_COMMAND_STATUS_REG); reg |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE; pci_conf_write(pc, csc->sc_tag, PCI_COMMAND_STATUS_REG, reg); /* * Make sure the latency timer is set to some reasonable * value. */ reg = pci_conf_read(pc, csc->sc_tag, PCI_BHLC_REG); if (PCI_LATTIMER(reg) < 0x20) { reg &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT); reg |= (0x20 << PCI_LATTIMER_SHIFT); pci_conf_write(pc, csc->sc_tag, PCI_BHLC_REG, reg); } }