/* $OpenBSD: if_re_cardbus.c,v 1.32 2024/05/24 06:26:47 jsg Exp $ */ /* * Copyright (c) 2005 Peter Valchev * * 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 Realtek 8169 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct re_cardbus_softc { /* General */ struct rl_softc sc_rl; /* Cardbus-specific data */ cardbus_devfunc_t ct; pcitag_t sc_tag; pci_chipset_tag_t sc_pc; int sc_csr; int sc_cben; int sc_bar_reg; pcireg_t sc_bar_val; int sc_intrline; bus_size_t sc_mapsize; }; int re_cardbus_probe(struct device *, void *, void *); void re_cardbus_attach(struct device *, struct device *, void *); int re_cardbus_detach(struct device *, int); void re_cardbus_setup(struct rl_softc *); /* * Cardbus autoconfig definitions */ const struct cfattach re_cardbus_ca = { sizeof(struct re_cardbus_softc), re_cardbus_probe, re_cardbus_attach, re_cardbus_detach }; const struct pci_matchid re_cardbus_devices[] = { { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8169 }, }; /* * Probe for a Realtek 8169/8110 chip. Check the PCI vendor and device * IDs against our list and return a device name if we find a match. */ int re_cardbus_probe(struct device *parent, void *match, void *aux) { return (cardbus_matchbyid((struct cardbus_attach_args *)aux, re_cardbus_devices, nitems(re_cardbus_devices))); } /* * Attach the interface. Allocate softc structures, do ifmedia * setup and ethernet/BPF attach. */ void re_cardbus_attach(struct device *parent, struct device *self, void *aux) { struct re_cardbus_softc *csc = (struct re_cardbus_softc *)self; struct rl_softc *sc = &csc->sc_rl; struct cardbus_attach_args *ca = aux; struct cardbus_softc *psc = (struct cardbus_softc *)sc->sc_dev.dv_parent; cardbus_chipset_tag_t cc = psc->sc_cc; cardbus_function_tag_t cf = psc->sc_cf; cardbus_devfunc_t ct = ca->ca_ct; bus_addr_t adr; char intrstr[16]; sc->sc_dmat = ca->ca_dmat; csc->ct = ct; csc->sc_tag = ca->ca_tag; csc->sc_pc = ca->ca_pc; csc->sc_intrline = ca->ca_intrline; /* * Map control/status registers. */ if (Cardbus_mapreg_map(ct, RL_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, &sc->rl_btag, &sc->rl_bhandle, &adr, &csc->sc_mapsize) == 0) { csc->sc_cben = CARDBUS_MEM_ENABLE; csc->sc_csr |= PCI_COMMAND_MEM_ENABLE; csc->sc_bar_reg = RL_PCI_LOMEM; csc->sc_bar_val = adr | PCI_MAPREG_TYPE_MEM; } else { printf(": can't map mem space\n"); return; } /* Enable power */ Cardbus_function_enable(ct); /* Get chip out of powersave mode (if applicable), initialize * config registers */ re_cardbus_setup(sc); /* Allocate interrupt */ sc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET, re_intr, sc, sc->sc_dev.dv_xname); if (sc->sc_ih == NULL) { printf(": couldn't establish interrupt at %d", ca->ca_intrline); Cardbus_function_disable(csc->ct); return; } snprintf(intrstr, sizeof(intrstr), "irq %d", ca->ca_intrline); sc->sc_product = PCI_PRODUCT(ca->ca_id); /* Call bus-independent (common) attach routine */ if (re_attach(sc, intrstr)) { cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, sc->sc_ih); Cardbus_mapreg_unmap(ct, csc->sc_bar_reg, sc->rl_btag, sc->rl_bhandle, csc->sc_mapsize); } } /* * Get chip out of power-saving mode, init registers */ void re_cardbus_setup(struct rl_softc *sc) { struct re_cardbus_softc *csc = (struct re_cardbus_softc *)sc; cardbus_devfunc_t ct = csc->ct; cardbus_chipset_tag_t cc = ct->ct_cc; pci_chipset_tag_t pc = csc->sc_pc; pcireg_t reg, command; int pmreg; /* Handle power management nonsense */ if (pci_get_capability(pc, csc->sc_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { command = pci_conf_read(pc, csc->sc_tag, pmreg + PCI_PMCSR); if (command & RL_PSTATE_MASK) { pcireg_t iobase, membase, irq; /* Save important PCI config data */ iobase = pci_conf_read(pc, csc->sc_tag, RL_PCI_LOIO); membase = pci_conf_read(pc, csc->sc_tag, RL_PCI_LOMEM); irq = pci_conf_read(pc, csc->sc_tag, RL_PCI_INTLINE); /* Reset the power state */ printf("%s: chip is in D%d power mode " "-- setting to D0\n", sc->sc_dev.dv_xname, command & RL_PSTATE_MASK); command &= RL_PSTATE_MASK; pci_conf_write(pc, csc->sc_tag, pmreg + PCI_PMCSR, command); /* Restore PCI config data */ pci_conf_write(pc, csc->sc_tag, RL_PCI_LOIO, iobase); pci_conf_write(pc, csc->sc_tag, RL_PCI_LOMEM, membase); pci_conf_write(pc, csc->sc_tag, RL_PCI_INTLINE, irq); } } /* 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); /* Program the BAR */ pci_conf_write(pc, csc->sc_tag, csc->sc_bar_reg, csc->sc_bar_val); /* Enable proper bits in CARDBUS 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); } } /* * Cardbus detach function: deallocate all resources */ int re_cardbus_detach(struct device *self, int flags) { struct re_cardbus_softc *csc = (void *)self; struct rl_softc *sc = &csc->sc_rl; struct cardbus_devfunc *ct = csc->ct; re_detach(sc); /* Disable interrupts */ if (sc->sc_ih != NULL) cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, sc->sc_ih); /* Free cardbus resources */ Cardbus_mapreg_unmap(ct, csc->sc_bar_reg, sc->rl_btag, sc->rl_bhandle, csc->sc_mapsize); return (0); }