/* $OpenBSD: if_bwi_pci.c,v 1.17 2019/05/10 16:44:36 bcook Exp $ */ /* * Copyright (c) 2007 Marcus Glocker * * 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. */ /* * PCI front-end for the Broadcom AirForce */ #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* Base Address Register */ #define BWI_PCI_BAR0 0x10 int bwi_pci_match(struct device *, void *, void *); void bwi_pci_attach(struct device *, struct device *, void *); int bwi_pci_detach(struct device *, int); void bwi_pci_conf_write(void *, uint32_t, uint32_t); uint32_t bwi_pci_conf_read(void *, uint32_t); int bwi_pci_activate(struct device *, int); void bwi_pci_wakeup(struct bwi_softc *); struct bwi_pci_softc { struct bwi_softc psc_bwi; pci_chipset_tag_t psc_pc; pcitag_t psc_pcitag; void *psc_ih; bus_size_t psc_mapsize; }; struct cfattach bwi_pci_ca = { sizeof(struct bwi_pci_softc), bwi_pci_match, bwi_pci_attach, bwi_pci_detach, bwi_pci_activate }; const struct pci_matchid bwi_pci_devices[] = { { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4303 }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306 }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_2 }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4307 }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4309 }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4311 }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4312 }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4318 }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4319 }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM43XG }, { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4331 }, }; int bwi_pci_match(struct device *parent, void *match, void *aux) { struct pci_attach_args *pa = aux; /* * The second revision of the BCM4311/BCM4312 * chips require v4 firmware. */ if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_BROADCOM && (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_BCM4311 || PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_BCM4312) && PCI_REVISION(pa->pa_class) == 0x02) return (0); return (pci_matchbyid((struct pci_attach_args *)aux, bwi_pci_devices, sizeof(bwi_pci_devices) / sizeof(bwi_pci_devices[0]))); } void bwi_reset_bcm4331(struct bwi_softc *sc) { int i; /* * The BCM4331 is not actually supported by this driver, but buggy EFI * revisions in 2011-2012 Macs leave this chip enabled by default, * causing it to emit spurious interrupts when the shared interrupt * line is enabled. */ for (i = 0; CSR_READ_4(sc, BWI_RESET_STATUS) && i < 30; i++) delay(10); CSR_WRITE_4(sc, BWI_RESET_CTRL, BWI_RESET_CTRL_RESET); CSR_READ_4(sc, BWI_RESET_CTRL); delay(1); CSR_WRITE_4(sc, BWI_RESET_CTRL, 0); CSR_READ_4(sc, BWI_RESET_CTRL); delay(10); } void bwi_pci_attach(struct device *parent, struct device *self, void *aux) { struct bwi_pci_softc *psc = (struct bwi_pci_softc *)self; struct pci_attach_args *pa = aux; struct bwi_softc *sc = &psc->psc_bwi; const char *intrstr = NULL; pci_intr_handle_t ih; pcireg_t memtype, reg; sc->sc_dmat = pa->pa_dmat; psc->psc_pc = pa->pa_pc; psc->psc_pcitag = pa->pa_tag; /* map control / status registers */ memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, BWI_PCI_BAR0); if (pci_mapreg_map(pa, BWI_PCI_BAR0, memtype, 0, &sc->sc_mem_bt, &sc->sc_mem_bh, NULL, &psc->psc_mapsize, 0)) { printf(": can't map mem space\n"); return; } /* we need to access PCI config space from the driver */ sc->sc_conf_write = bwi_pci_conf_write; sc->sc_conf_read = bwi_pci_conf_read; reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); sc->sc_pci_revid = PCI_REVISION(pa->pa_class); sc->sc_pci_did = PCI_PRODUCT(pa->pa_id); sc->sc_pci_subvid = PCI_VENDOR(reg); sc->sc_pci_subdid = PCI_PRODUCT(reg); if (sc->sc_pci_did == PCI_PRODUCT_BROADCOM_BCM4331) { printf(": disabling\n"); bwi_reset_bcm4331(sc); bus_space_unmap(sc->sc_mem_bt, sc->sc_mem_bh, psc->psc_mapsize); return; } /* map interrupt */ if (pci_intr_map(pa, &ih) != 0) { printf(": can't map interrupt\n"); return; } /* establish interrupt */ intrstr = pci_intr_string(psc->psc_pc, ih); psc->psc_ih = pci_intr_establish(psc->psc_pc, ih, IPL_NET, bwi_intr, sc, sc->sc_dev.dv_xname); if (psc->psc_ih == NULL) { printf(": can't establish interrupt"); if (intrstr != NULL) printf(" at %s", intrstr); printf("\n"); return; } printf(": %s", intrstr); bwi_attach(sc); } int bwi_pci_detach(struct device *self, int flags) { struct bwi_pci_softc *psc = (struct bwi_pci_softc *)self; struct bwi_softc *sc = &psc->psc_bwi; bwi_detach(sc); pci_intr_disestablish(psc->psc_pc, psc->psc_ih); return (0); } int bwi_pci_activate(struct device *self, int act) { struct bwi_pci_softc *psc = (struct bwi_pci_softc *)self; struct bwi_softc *sc = &psc->psc_bwi; struct ifnet *ifp = &sc->sc_ic.ic_if; switch (act) { case DVACT_SUSPEND: if (ifp->if_flags & IFF_RUNNING) bwi_stop(sc, 1); break; case DVACT_WAKEUP: bwi_pci_wakeup(sc); break; } return (0); } void bwi_pci_wakeup(struct bwi_softc *sc) { struct ifnet *ifp = &sc->sc_ic.ic_if; if (ifp->if_flags & IFF_UP) bwi_init(ifp); } void bwi_pci_conf_write(void *self, uint32_t reg, uint32_t val) { struct bwi_pci_softc *psc = (struct bwi_pci_softc *)self; pci_conf_write(psc->psc_pc, psc->psc_pcitag, reg, val); } uint32_t bwi_pci_conf_read(void *self, uint32_t reg) { struct bwi_pci_softc *psc = (struct bwi_pci_softc *)self; return (pci_conf_read(psc->psc_pc, psc->psc_pcitag, reg)); }