/* $OpenBSD: if_rtw_cardbus.c,v 1.19 2010/09/06 19:20:21 deraadt Exp $ */ /* $NetBSD: if_rtw_cardbus.c,v 1.4 2004/12/20 21:05:34 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 <sys/cdefs.h> #include "bpfilter.h" #include <sys/param.h> #include <sys/systm.h> #include <sys/mbuf.h> #include <sys/malloc.h> #include <sys/kernel.h> #include <sys/socket.h> #include <sys/ioctl.h> #include <sys/errno.h> #include <sys/device.h> #include <machine/endian.h> #include <net/if.h> #include <net/if_dl.h> #include <net/if_media.h> #ifdef INET #include <netinet/in.h> #include <netinet/if_ether.h> #endif #include <net80211/ieee80211_radiotap.h> #include <net80211/ieee80211_var.h> #if NBPFILTER > 0 #include <net/bpf.h> #endif #include <machine/bus.h> #include <machine/intr.h> #include <dev/ic/rtwreg.h> #include <dev/ic/rtwvar.h> #include <dev/pci/pcivar.h> #include <dev/pci/pcireg.h> #include <dev/pci/pcidevs.h> #include <dev/cardbus/cardbusvar.h> #include <dev/pci/pcidevs.h> /* * 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 */ pcitag_t sc_tag; /* our CardBus tag */ pci_chipset_tag_t sc_pc; /* PCI chipset */ int sc_csr; /* CSR bits */ bus_size_t sc_mapsize; /* size of the 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 rtw_cardbus_match(struct device *, void *, void *); void rtw_cardbus_attach(struct device *, struct device *, void *); int rtw_cardbus_detach(struct device *, int); void rtw_cardbus_intr_ack(struct rtw_regs *); void rtw_cardbus_funcregen(struct rtw_regs *, int); struct cfattach rtw_cardbus_ca = { sizeof(struct rtw_cardbus_softc), rtw_cardbus_match, rtw_cardbus_attach, rtw_cardbus_detach }; void rtw_cardbus_setup(struct rtw_cardbus_softc *); int rtw_cardbus_enable(struct rtw_softc *); void rtw_cardbus_disable(struct rtw_softc *); void rtw_cardbus_power(struct rtw_softc *, int); const struct pci_matchid rtw_cardbus_devices[] = { { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8180 }, #ifdef RTW_DEBUG { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8185 }, { PCI_VENDOR_BELKIN2, PCI_PRODUCT_BELKIN2_F5D7010 }, #endif { PCI_VENDOR_BELKIN2, PCI_PRODUCT_BELKIN2_F5D6020V3 }, { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DWL610 } }; int rtw_cardbus_match(struct device *parent, void *match, void *aux) { return (cardbus_matchbyid((struct cardbus_attach_args *)aux, rtw_cardbus_devices, sizeof(rtw_cardbus_devices)/sizeof(rtw_cardbus_devices[0]))); } void rtw_cardbus_intr_ack(struct rtw_regs *regs) { RTW_WRITE(regs, RTW_FER, RTW_FER_INTR); } 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(struct device *parent, struct device *self, void *aux) { struct rtw_cardbus_softc *csc = (void *)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; bus_addr_t adr; int rev; 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 = rtw_cardbus_enable; sc->sc_disable = rtw_cardbus_disable; sc->sc_power = rtw_cardbus_power; sc->sc_intr_ack = rtw_cardbus_intr_ack; /* Get revision info. */ rev = PCI_REVISION(ca->ca_class); RTW_DPRINTF(RTW_DEBUG_ATTACH, ("%s: pass %d.%d signature %08x\n", sc->sc_dev.dv_xname, (rev >> 4) & 0xf, rev & 0xf, pci_conf_read(ca->ca_pc, csc->sc_tag, 0x80))); /* * Map the device. */ csc->sc_csr = PCI_COMMAND_MASTER_ENABLE; if (Cardbus_mapreg_map(ct, RTW_PCI_MMBA, PCI_MAPREG_TYPE_MEM, 0, ®s->r_bt, ®s->r_bh, &adr, &csc->sc_mapsize) == 0) { RTW_DPRINTF(RTW_DEBUG_ATTACH, ("%s: %s mapped %lu bytes mem space\n", sc->sc_dev.dv_xname, __func__, (long)csc->sc_mapsize)); csc->sc_cben = CARDBUS_MEM_ENABLE; csc->sc_csr |= PCI_COMMAND_MEM_ENABLE; csc->sc_bar_reg = RTW_PCI_MMBA; csc->sc_bar_val = adr | PCI_MAPREG_TYPE_MEM; } else if (Cardbus_mapreg_map(ct, RTW_PCI_IOBA, PCI_MAPREG_TYPE_IO, 0, ®s->r_bt, ®s->r_bh, &adr, &csc->sc_mapsize) == 0) { RTW_DPRINTF(RTW_DEBUG_ATTACH, ("%s: %s mapped %lu bytes I/O space\n", sc->sc_dev.dv_xname, __func__, (long)csc->sc_mapsize)); csc->sc_cben = CARDBUS_IO_ENABLE; csc->sc_csr |= PCI_COMMAND_IO_ENABLE; csc->sc_bar_reg = RTW_PCI_IOBA; csc->sc_bar_val = adr | PCI_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. */ rtw_cardbus_setup(csc); /* Remember which interrupt line. */ csc->sc_intrline = ca->ca_intrline; printf(": irq %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); /* * Power down the socket. */ Cardbus_function_disable(csc->sc_ct); } int rtw_cardbus_detach(struct device *self, int flags) { struct rtw_cardbus_softc *csc = (void *)self; struct rtw_softc *sc = &csc->sc_rtw; struct rtw_regs *regs = &sc->sc_regs; 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 = rtw_detach(sc); if (rv) return (rv); rtw_cardbus_funcregen(regs, 0); /* * 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, csc->sc_mapsize); return (0); } int rtw_cardbus_enable(struct rtw_softc *sc) { struct rtw_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. */ rtw_cardbus_setup(csc); /* * Map and establish the interrupt. */ csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET, rtw_intr, sc, sc->sc_dev.dv_xname); 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); } 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 (0); } void rtw_cardbus_disable(struct rtw_softc *sc) { struct rtw_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; 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; /* Power down the socket. */ Cardbus_function_disable(ct); } void rtw_cardbus_power(struct rtw_softc *sc, int why) { RTW_DPRINTF(RTW_DEBUG_ATTACH, ("%s: rtw_cardbus_power\n", sc->sc_dev.dv_xname)); if (why == DVACT_RESUME) rtw_enable(sc); } void rtw_cardbus_setup(struct rtw_cardbus_softc *csc) { struct rtw_softc *sc = &csc->sc_rtw; 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; int pmreg; if (pci_get_capability(pc, csc->sc_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { reg = pci_conf_read(pc, csc->sc_tag, pmreg + 4) & 0x03; #if 1 /* XXX Probably not right for CardBus. */ if (reg == 3) { /* * The card has lost all configuration data in * this state, so punt. */ printf("%s: unable to wake up from power state D3\n", sc->sc_dev.dv_xname); return; } #endif if (reg != 0) { printf("%s: waking up from power state D%d\n", sc->sc_dev.dv_xname, reg); pci_conf_write(pc, csc->sc_tag, pmreg + 4, 0); } } /* Program the BAR. */ pci_conf_write(pc, 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 = pci_conf_read(pc, csc->sc_tag, PCI_COMMAND_STATUS_REG); reg &= ~(PCI_COMMAND_IO_ENABLE|PCI_COMMAND_MEM_ENABLE); reg |= csc->sc_csr; 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); } }