/* $NetBSD: if_atw_pci.c,v 1.8 2004/08/21 23:48:33 thorpej Exp $ */ /*- * Copyright (c) 1998, 1999, 2000, 2002 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; Charles M. Hannum; and 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. 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 ADMtek ADM8211 802.11 MAC/BBP chip. * * Derived from the ``Tulip'' PCI bus front-end. */ #include __KERNEL_RCSID(0, "$NetBSD: if_atw_pci.c,v 1.8 2004/08/21 23:48:33 thorpej Exp $"); #include #include #include #include #include #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 ADM8211. */ #define ATW_PCI_IOBA 0x10 /* i/o mapped base */ #define ATW_PCI_MMBA 0x14 /* memory mapped base */ struct atw_pci_softc { struct atw_softc psc_atw; /* real ADM8211 softc */ pci_intr_handle_t psc_ih; /* interrupt handle */ void *psc_intrcookie; pci_chipset_tag_t psc_pc; /* our PCI chipset */ pcitag_t psc_pcitag; /* our PCI tag */ }; static int atw_pci_match(struct device *, struct cfdata *, void *); static void atw_pci_attach(struct device *, struct device *, void *); CFATTACH_DECL(atw_pci, sizeof(struct atw_pci_softc), atw_pci_match, atw_pci_attach, NULL, NULL); static const struct atw_pci_product { u_int32_t app_vendor; /* PCI vendor ID */ u_int32_t app_product; /* PCI product ID */ const char *app_product_name; } atw_pci_products[] = { { PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211, "ADMtek ADM8211 802.11 MAC/BBP" }, { 0, 0, NULL }, }; static const struct atw_pci_product * atw_pci_lookup(const struct pci_attach_args *pa) { const struct atw_pci_product *app; for (app = atw_pci_products; app->app_product_name != NULL; app++) { if (PCI_VENDOR(pa->pa_id) == app->app_vendor && PCI_PRODUCT(pa->pa_id) == app->app_product) return (app); } return (NULL); } static int atw_pci_match(struct device *parent, struct cfdata *match, void *aux) { struct pci_attach_args *pa = aux; if (atw_pci_lookup(pa) != NULL) return (1); return (0); } static int atw_pci_enable(struct atw_softc *sc) { struct atw_pci_softc *psc = (void *)sc; /* Establish the interrupt. */ psc->psc_intrcookie = pci_intr_establish(psc->psc_pc, psc->psc_ih, IPL_NET, atw_intr, sc); if (psc->psc_intrcookie == NULL) { printf("%s: unable to establish interrupt\n", sc->sc_dev.dv_xname); return (1); } return (0); } static void atw_pci_disable(struct atw_softc *sc) { struct atw_pci_softc *psc = (void *)sc; /* Unhook the interrupt handler. */ pci_intr_disestablish(psc->psc_pc, psc->psc_intrcookie); psc->psc_intrcookie = NULL; } static void atw_pci_attach(struct device *parent, struct device *self, void *aux) { struct atw_pci_softc *psc = (void *) self; struct atw_softc *sc = &psc->psc_atw; struct pci_attach_args *pa = aux; pci_chipset_tag_t pc = pa->pa_pc; const char *intrstr = NULL; bus_space_tag_t iot, memt; bus_space_handle_t ioh, memh; int ioh_valid, memh_valid; const struct atw_pci_product *app; pcireg_t reg; int pmreg; psc->psc_pc = pa->pa_pc; psc->psc_pcitag = pa->pa_tag; app = atw_pci_lookup(pa); if (app == NULL) { printf("\n"); panic("atw_pci_attach: impossible"); } /* * No power management hooks. * XXX Maybe we should add some! */ sc->sc_flags |= ATWF_ENABLED; /* * Get revision info, and set some chip-specific variables. */ sc->sc_rev = PCI_REVISION(pa->pa_class); printf(": %s, revision %d.%d\n", app->app_product_name, (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf); /* * Check to see if the device is in power-save mode, and * being it out if necessary. * * XXX This code comes almost verbatim from if_tlp_pci.c. I do * not understand it. Tulip clears the "sleep mode" bit in the * CFDA register, first. There is an equivalent (?) register at the * same place in the ADM8211, but the docs do not assign its bits * any meanings. -dcy */ if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { reg = pci_conf_read(pc, pa->pa_tag, pmreg + PCI_PMCSR); 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 + PCI_PMCSR, (reg & ~PCI_PMCSR_STATE_MASK) | PCI_PMCSR_STATE_D0); break; case PCI_PMCSR_STATE_D3: /* * The card has lost all configuration data in * this state, so punt. */ printf(": unable to wake up from power state D3, " "reboot required.\n"); pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR, (reg & ~PCI_PMCSR_STATE_MASK) | PCI_PMCSR_STATE_D0); return; } } /* * Map the device. */ ioh_valid = (pci_mapreg_map(pa, ATW_PCI_IOBA, PCI_MAPREG_TYPE_IO, 0, &iot, &ioh, NULL, NULL) == 0); memh_valid = (pci_mapreg_map(pa, ATW_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; /* * 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); /* * Get the cacheline size. */ sc->sc_cacheline = PCI_CACHELINE(pci_conf_read(pc, pa->pa_tag, PCI_BHLC_REG)); /* * Get PCI data moving command info. */ if (pa->pa_flags & PCI_FLAGS_MRL_OKAY) /* read line */ sc->sc_flags |= ATWF_MRL; if (pa->pa_flags & PCI_FLAGS_MRM_OKAY) /* read multiple */ sc->sc_flags |= ATWF_MRM; if (pa->pa_flags & PCI_FLAGS_MWI_OKAY) /* write invalidate */ sc->sc_flags |= ATWF_MWI; /* * Map and establish our interrupt. */ if (pci_intr_map(pa, &psc->psc_ih)) { printf("%s: unable to map interrupt\n", sc->sc_dev.dv_xname); return; } intrstr = pci_intr_string(pc, psc->psc_ih); psc->psc_intrcookie = pci_intr_establish(pc, psc->psc_ih, IPL_NET, atw_intr, sc); if (psc->psc_intrcookie == 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); sc->sc_enable = atw_pci_enable; sc->sc_disable = atw_pci_disable; /* * Finish off the attach. */ atw_attach(sc); }