/* $NetBSD: if_rtw_cardbus.c,v 1.26 2008/05/14 19:24:48 dyoung Exp $ */ /*- * Copyright (c) 2004, 2005 David Young. All rights reserved. * * Adapted for the RTL8180 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. The name of David Young may not be used to endorse or promote * products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY David Young ``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 David * Young 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. */ /*- * Copyright (c) 1999, 2000 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. * * 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 front-end for the Realtek RTL8180 802.11 MAC/BBP driver. * * TBD factor with atw, tlp Cardbus front-ends? */ #include __KERNEL_RCSID(0, "$NetBSD: if_rtw_cardbus.c,v 1.26 2008/05/14 19:24:48 dyoung 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 /* * PCI configuration space registers used by the RTL8180. */ #define RTW_PCI_IOBA 0x10 /* i/o mapped base */ #define RTW_PCI_MMBA 0x14 /* memory mapped base */ struct rtw_cardbus_softc { struct rtw_softc sc_rtw; /* real RTL8180 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; /* size of the mapped bus space * region */ int sc_bar_reg; /* which BAR to use */ pcireg_t sc_bar_val; /* value of the BAR */ int sc_intrline; /* interrupt line */ }; int rtw_cardbus_match(device_t, struct cfdata *, void *); void rtw_cardbus_attach(device_t, device_t, void *); int rtw_cardbus_detach(device_t, int); CFATTACH_DECL_NEW(rtw_cardbus, sizeof(struct rtw_cardbus_softc), rtw_cardbus_match, rtw_cardbus_attach, rtw_cardbus_detach, NULL); void rtw_cardbus_setup(struct rtw_cardbus_softc *); bool rtw_cardbus_resume(device_t PMF_FN_PROTO); bool rtw_cardbus_suspend(device_t PMF_FN_PROTO); const struct rtw_cardbus_product *rtw_cardbus_lookup( const struct cardbus_attach_args *); const struct rtw_cardbus_product { u_int32_t rcp_vendor; /* PCI vendor ID */ u_int32_t rcp_product; /* PCI product ID */ const char *rcp_product_name; } rtw_cardbus_products[] = { { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8180, "Realtek RTL8180 802.11 MAC/BBP" }, { PCI_VENDOR_BELKIN, PCI_PRODUCT_BELKIN_F5D6020V3, "Belkin F5D6020v3 802.11b (RTL8180 MAC/BBP)" }, { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DWL610, "DWL-610 D-Link Air 802.11b (RTL8180 MAC/BBP)" }, { 0, 0, NULL }, }; const struct rtw_cardbus_product * rtw_cardbus_lookup(const struct cardbus_attach_args *ca) { const struct rtw_cardbus_product *rcp; for (rcp = rtw_cardbus_products; rcp->rcp_product_name != NULL; rcp++) { if (PCI_VENDOR(ca->ca_id) == rcp->rcp_vendor && PCI_PRODUCT(ca->ca_id) == rcp->rcp_product) return rcp; } return NULL; } int rtw_cardbus_match(device_t parent, struct cfdata *match, void *aux) { struct cardbus_attach_args *ca = aux; if (rtw_cardbus_lookup(ca) != NULL) return 1; return 0; } static void rtw_cardbus_intr_ack(struct rtw_regs *regs) { RTW_WRITE(regs, RTW_FER, RTW_FER_INTR); } static void rtw_cardbus_funcregen(struct rtw_regs *regs, int enable) { u_int32_t reg; rtw_config0123_enable(regs, 1); reg = RTW_READ(regs, RTW_CONFIG3); if (enable) RTW_WRITE(regs, RTW_CONFIG3, reg | RTW_CONFIG3_FUNCREGEN); else RTW_WRITE(regs, RTW_CONFIG3, reg & ~RTW_CONFIG3_FUNCREGEN); rtw_config0123_enable(regs, 0); } void rtw_cardbus_attach(device_t parent, device_t self, void *aux) { struct rtw_cardbus_softc *csc = device_private(self); struct rtw_softc *sc = &csc->sc_rtw; struct rtw_regs *regs = &sc->sc_regs; struct cardbus_attach_args *ca = aux; cardbus_devfunc_t ct = ca->ca_ct; const struct rtw_cardbus_product *rcp; bus_addr_t adr; int rev; sc->sc_dev = self; sc->sc_dmat = ca->ca_dmat; csc->sc_ct = ct; csc->sc_tag = ca->ca_tag; rcp = rtw_cardbus_lookup(ca); if (rcp == NULL) { printf("\n"); panic("rtw_cardbus_attach: impossible"); } sc->sc_intr_ack = rtw_cardbus_intr_ack; /* Get revision info. */ rev = PCI_REVISION(ca->ca_class); printf(": %s\n", rcp->rcp_product_name); RTW_DPRINTF(RTW_DEBUG_ATTACH, ("%s: pass %d.%d signature %08x\n", device_xname(self), (rev >> 4) & 0xf, rev & 0xf, cardbus_conf_read(ct->ct_cc, ct->ct_cf, csc->sc_tag, 0x80))); /* * Map the device. */ csc->sc_csr = CARDBUS_COMMAND_MASTER_ENABLE | CARDBUS_COMMAND_PARITY_ENABLE | CARDBUS_COMMAND_SERR_ENABLE; if (Cardbus_mapreg_map(ct, RTW_PCI_MMBA, CARDBUS_MAPREG_TYPE_MEM, 0, ®s->r_bt, ®s->r_bh, &adr, ®s->r_sz) == 0) { RTW_DPRINTF(RTW_DEBUG_ATTACH, ("%s: %s mapped %" PRIuMAX " bytes mem space\n", device_xname(self), __func__, (uintmax_t)regs->r_sz)); #if rbus #else (*ct->ct_cf->cardbus_mem_open)(cc, 0, adr, adr+csc->sc_mapsize); #endif csc->sc_csr |= CARDBUS_COMMAND_MEM_ENABLE; csc->sc_bar_reg = RTW_PCI_MMBA; csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_MEM; } else if (Cardbus_mapreg_map(ct, RTW_PCI_IOBA, CARDBUS_MAPREG_TYPE_IO, 0, ®s->r_bt, ®s->r_bh, &adr, ®s->r_sz) == 0) { RTW_DPRINTF(RTW_DEBUG_ATTACH, ("%s: %s mapped %" PRIuMAX " bytes I/O space\n", device_xname(self), __func__, (uintmax_t)regs->r_sz)); #if rbus #else (*ct->ct_cf->cardbus_io_open)(cc, 0, adr, adr+csc->sc_mapsize); #endif csc->sc_csr |= CARDBUS_COMMAND_IO_ENABLE; csc->sc_bar_reg = RTW_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. */ rtw_cardbus_setup(csc); /* Remember which interrupt line. */ csc->sc_intrline = ca->ca_intrline; aprint_normal_dev(self, "interrupting at %d\n", csc->sc_intrline); /* * Finish off the attach. */ rtw_attach(sc); rtw_cardbus_funcregen(regs, 1); RTW_WRITE(regs, RTW_FEMR, RTW_FEMR_INTR); RTW_WRITE(regs, RTW_FER, RTW_FER_INTR); if (!pmf_device_register(self, rtw_cardbus_suspend, rtw_cardbus_resume)) aprint_error_dev(self, "couldn't establish power handler\n"); else { pmf_class_network_register(self, &sc->sc_if); /* * Power down the socket. */ pmf_device_suspend_self(self); } } int rtw_cardbus_detach(device_t self, int flags) { struct rtw_cardbus_softc *csc = device_private(self); struct rtw_softc *sc = &csc->sc_rtw; struct rtw_regs *regs = &sc->sc_regs; struct cardbus_devfunc *ct = csc->sc_ct; int rc; #if defined(DIAGNOSTIC) if (ct == NULL) panic("%s: data structure lacks", device_xname(self)); #endif if ((rc = rtw_detach(sc)) != 0) return rc; /* * 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, regs->r_bt, regs->r_bh, regs->r_sz); return 0; } bool rtw_cardbus_resume(device_t self PMF_FN_ARGS) { struct rtw_cardbus_softc *csc = device_private(self); struct rtw_softc *sc = &csc->sc_rtw; cardbus_devfunc_t ct = csc->sc_ct; cardbus_chipset_tag_t cc = ct->ct_cc; cardbus_function_tag_t cf = ct->ct_cf; /* * Map and establish the interrupt. */ csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET, rtw_intr, sc); if (csc->sc_ih == NULL) { aprint_error_dev(sc->sc_dev, "unable to establish interrupt at %d\n", csc->sc_intrline); return false; } rtw_cardbus_funcregen(&sc->sc_regs, 1); RTW_WRITE(&sc->sc_regs, RTW_FEMR, RTW_FEMR_INTR); RTW_WRITE(&sc->sc_regs, RTW_FER, RTW_FER_INTR); return rtw_resume(self, flags); } bool rtw_cardbus_suspend(device_t self PMF_FN_ARGS) { struct rtw_cardbus_softc *csc = device_private(self); struct rtw_softc *sc = &csc->sc_rtw; cardbus_devfunc_t ct = csc->sc_ct; cardbus_chipset_tag_t cc = ct->ct_cc; cardbus_function_tag_t cf = ct->ct_cf; if (!rtw_suspend(self, flags)) return false; RTW_WRITE(&sc->sc_regs, RTW_FEMR, RTW_READ(&sc->sc_regs, RTW_FEMR) & ~RTW_FEMR_INTR); rtw_cardbus_funcregen(&sc->sc_regs, 0); /* Unhook the interrupt handler. */ cardbus_intr_disestablish(cc, cf, csc->sc_ih); csc->sc_ih = NULL; return true; } void rtw_cardbus_setup(struct rtw_cardbus_softc *csc) { cardbustag_t tag = csc->sc_tag; cardbus_devfunc_t ct = csc->sc_ct; cardbus_chipset_tag_t cc = ct->ct_cc; cardbusreg_t bhlc, csr, lattimer; cardbus_function_tag_t cf = ct->ct_cf; (void)cardbus_set_powerstate(ct, tag, PCI_PWR_D0); /* I believe the datasheet tries to warn us that the RTL8180 * wants for 16 (0x10) to divide the latency timer. */ bhlc = cardbus_conf_read(cc, cf, tag, CARDBUS_BHLC_REG); lattimer = rounddown(PCI_LATTIMER(bhlc), 0x10); if (PCI_LATTIMER(bhlc) != lattimer) { bhlc &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT); bhlc |= (lattimer << PCI_LATTIMER_SHIFT); cardbus_conf_write(cc, cf, tag, CARDBUS_BHLC_REG, bhlc); } /* Program the BAR. */ cardbus_conf_write(cc, cf, tag, csc->sc_bar_reg, csc->sc_bar_val); /* Enable the appropriate bits in the PCI CSR. */ csr = cardbus_conf_read(cc, cf, tag, PCI_COMMAND_STATUS_REG); csr &= ~(PCI_COMMAND_IO_ENABLE|PCI_COMMAND_MEM_ENABLE); csr |= csc->sc_csr; cardbus_conf_write(cc, cf, tag, PCI_COMMAND_STATUS_REG, csr); }