/* $NetBSD: if_epic_pci.c,v 1.19 2001/11/13 07:48:43 lukem Exp $ */ /*- * Copyright (c) 1998, 1999 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. * 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. */ /* * PCI bus front-end for the Standard Microsystems Corp. 83C170 * Ethernet PCI Integrated Controller (EPIC/100) driver. */ #include __KERNEL_RCSID(0, "$NetBSD: if_epic_pci.c,v 1.19 2001/11/13 07:48:43 lukem Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * PCI configuration space registers used by the EPIC. */ #define EPIC_PCI_IOBA 0x10 /* i/o mapped base */ #define EPIC_PCI_MMBA 0x14 /* memory mapped base */ struct epic_pci_softc { struct epic_softc sc_epic; /* real EPIC softc */ /* PCI-specific goo. */ void *sc_ih; /* interrupt handle */ }; int epic_pci_match(struct device *, struct cfdata *, void *); void epic_pci_attach(struct device *, struct device *, void *); struct cfattach epic_pci_ca = { sizeof(struct epic_pci_softc), epic_pci_match, epic_pci_attach, }; const struct epic_pci_product { u_int32_t epp_prodid; /* PCI product ID */ const char *epp_name; /* device name */ } epic_pci_products[] = { { PCI_PRODUCT_SMC_83C170, "SMC 83c170 Fast Ethernet" }, { PCI_PRODUCT_SMC_83C175, "SMC 83c175 Fast Ethernet" }, { 0, NULL }, }; const struct epic_pci_product *epic_pci_lookup(const struct pci_attach_args *); const struct epic_pci_product * epic_pci_lookup(pa) const struct pci_attach_args *pa; { const struct epic_pci_product *epp; if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_SMC) return (NULL); for (epp = epic_pci_products; epp->epp_name != NULL; epp++) if (PCI_PRODUCT(pa->pa_id) == epp->epp_prodid) return (epp); return (NULL); } const struct epic_pci_subsys_info { pcireg_t subsysid; int flags; } epic_pci_subsys_info[] = { { PCI_ID_CODE(PCI_VENDOR_SMC, 0xa024), /* SMC9432BTX1 */ EPIC_HAS_BNC }, { PCI_ID_CODE(PCI_VENDOR_SMC, 0xa016), /* SMC9432FTX */ EPIC_HAS_MII_FIBER | EPIC_DUPLEXLED_ON_694 }, { 0xffffffff, 0 } }; const struct epic_pci_subsys_info * epic_pci_subsys_lookup(const struct pci_attach_args *); const struct epic_pci_subsys_info * epic_pci_subsys_lookup(pa) const struct pci_attach_args *pa; { pci_chipset_tag_t pc = pa->pa_pc; pcireg_t reg; const struct epic_pci_subsys_info *esp; reg = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG); for (esp = epic_pci_subsys_info; esp->subsysid != 0xffffffff; esp++) if (esp->subsysid == reg) return (esp); return (NULL); } int epic_pci_match(parent, match, aux) struct device *parent; struct cfdata *match; void *aux; { struct pci_attach_args *pa = aux; if (epic_pci_lookup(pa) != NULL) return (1); return (0); } void epic_pci_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct epic_pci_softc *psc = (struct epic_pci_softc *)self; struct epic_softc *sc = &psc->sc_epic; struct pci_attach_args *pa = aux; pci_chipset_tag_t pc = pa->pa_pc; pci_intr_handle_t ih; const char *intrstr = NULL; const struct epic_pci_product *epp; const struct epic_pci_subsys_info *esp; bus_space_tag_t iot, memt; bus_space_handle_t ioh, memh; pcireg_t reg; int pmreg, ioh_valid, memh_valid; if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { reg = pci_conf_read(pc, pa->pa_tag, pmreg + 4); switch (reg & PCI_PMCSR_STATE_MASK) { case PCI_PMCSR_STATE_D1: case PCI_PMCSR_STATE_D2: printf(": waking up from power state D%d\n%s", reg & PCI_PMCSR_STATE_MASK, sc->sc_dev.dv_xname); pci_conf_write(pc, pa->pa_tag, pmreg + 4, (reg & ~PCI_PMCSR_STATE_MASK) | PCI_PMCSR_STATE_D0); break; case PCI_PMCSR_STATE_D3: /* * IO and MEM are disabled. We can't enable * the card because the BARs might be invalid. */ printf(": unable to wake up from power state D3, " "reboot required.\n"); pci_conf_write(pc, pa->pa_tag, pmreg + 4, (reg & ~PCI_PMCSR_STATE_MASK) | PCI_PMCSR_STATE_D0); return; } } /* * Map the device. */ ioh_valid = (pci_mapreg_map(pa, EPIC_PCI_IOBA, PCI_MAPREG_TYPE_IO, 0, &iot, &ioh, NULL, NULL) == 0); memh_valid = (pci_mapreg_map(pa, EPIC_PCI_MMBA, PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, NULL) == 0); if (memh_valid) { sc->sc_st = memt; sc->sc_sh = memh; } else if (ioh_valid) { sc->sc_st = iot; sc->sc_sh = ioh; } else { printf(": unable to map device registers\n"); return; } sc->sc_dmat = pa->pa_dmat; epp = epic_pci_lookup(pa); if (epp == NULL) { printf("\n"); panic("epic_pci_attach: impossible"); } printf(": %s, rev. %d\n", epp->epp_name, PCI_REVISION(pa->pa_class)); /* Make sure bus mastering is enabled. */ pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | PCI_COMMAND_MASTER_ENABLE); /* * Map and establish our interrupt. */ if (pci_intr_map(pa, &ih)) { printf("%s: unable to map interrupt\n", sc->sc_dev.dv_xname); return; } intrstr = pci_intr_string(pc, ih); psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, epic_intr, sc); if (psc->sc_ih == NULL) { printf("%s: unable to establish interrupt", sc->sc_dev.dv_xname); if (intrstr != NULL) printf(" at %s", intrstr); printf("\n"); return; } printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); esp = epic_pci_subsys_lookup(pa); if (esp) sc->sc_hwflags = esp->flags; /* * Finish off the attach. */ epic_attach(sc); }