FreeBSD/Linux Kernel Cross Reference
sys/dev/cardbus/if_bwi_cardbus.c

     /*      $OpenBSD: if_bwi_cardbus.c,v 1.16 2022/04/06 18:59:28 naddy Exp $ */
     
     /*
      * Copyright (c) 2007 Marcus Glocker <mglocker@openbsd.org>
      * Copyright (c) 2006 Claudio Jeker <claudio@openbsd.org>
      *
      * 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 Broadcom AirForce
     */
    
    #include "bpfilter.h"
    
    #include <sys/param.h>
    #include <sys/mbuf.h>
    #include <sys/socket.h>
    #include <sys/systm.h>
    #include <sys/timeout.h>
    
    #include <net/if.h>
    #include <net/if_media.h>
    
    #include <netinet/in.h>
    #include <netinet/if_ether.h>
    
    #include <net80211/ieee80211_var.h>
    #include <net80211/ieee80211_amrr.h>
    #include <net80211/ieee80211_radiotap.h>
    
    #include <dev/pci/pcireg.h>
    #include <dev/pci/pcivar.h>
    #include <dev/pci/pcidevs.h>
    
    #include <dev/cardbus/cardbusvar.h>
    
    #include <dev/ic/bwivar.h>
    
    struct bwi_cardbus_softc {
            struct bwi_softc         csc_bwi;
    
            /* cardbus specific goo */
            cardbus_devfunc_t        csc_ct;
            pcitag_t                 csc_tag;
            void                    *csc_ih;
    
            bus_size_t               csc_mapsize;
            pcireg_t                 csc_bar_val;
            int                      csc_intrline;
            pci_chipset_tag_t        csc_pc;
    };
    
    int             bwi_cardbus_match(struct device *, void *, void*);
    void            bwi_cardbus_attach(struct device *, struct device *, void *);
    int             bwi_cardbus_detach(struct device *, int);
    void            bwi_cardbus_setup(struct bwi_cardbus_softc *);
    int             bwi_cardbus_enable(struct bwi_softc *);
    void            bwi_cardbus_disable(struct bwi_softc *);
    void            bwi_cardbus_conf_write(void *, uint32_t, uint32_t);
    uint32_t        bwi_cardbus_conf_read(void *, uint32_t);
    
    const struct cfattach bwi_cardbus_ca = {
            sizeof (struct bwi_cardbus_softc), bwi_cardbus_match,
            bwi_cardbus_attach, bwi_cardbus_detach
    };
    
    static const struct pci_matchid bwi_cardbus_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_BCM4318 },
            { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4319 },
            { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM43XG }
    };
    
    int
    bwi_cardbus_match(struct device *parent, void *match, void *aux)
    {
            return (cardbus_matchbyid(aux, bwi_cardbus_devices,
                sizeof (bwi_cardbus_devices) / sizeof (bwi_cardbus_devices[0])));
    }
    
    void
    bwi_cardbus_attach(struct device *parent, struct device *self, void *aux)
    {
            struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)self;
           struct cardbus_attach_args *ca = aux;
           struct bwi_softc *sc = &csc->csc_bwi;
           cardbus_devfunc_t ct = ca->ca_ct;
           pcireg_t reg;
           bus_addr_t base;
           int error;
   
           sc->sc_dmat = ca->ca_dmat;
           csc->csc_ct = ct;
           csc->csc_tag = ca->ca_tag;
           csc->csc_intrline = ca->ca_intrline;
           csc->csc_pc = ca->ca_pc;
   
           /* power management hooks */
           sc->sc_enable = bwi_cardbus_enable;
           sc->sc_disable = bwi_cardbus_disable;
           //sc->sc_power = bwi_cardbus_power;
   
           /* map control/status registers */
           error = Cardbus_mapreg_map(ct, CARDBUS_BASE0_REG,
               PCI_MAPREG_TYPE_MEM, 0, &sc->sc_mem_bt,
               &sc->sc_mem_bh, &base, &csc->csc_mapsize);
           if (error != 0) {
                   printf(": can't map mem space\n");
                   return;
           }
           csc->csc_bar_val = base | PCI_MAPREG_TYPE_MEM;
   
           /* set up the PCI configuration registers */
           bwi_cardbus_setup(csc);
   
           printf(": irq %d", csc->csc_intrline);
   
           /* we need to access Cardbus config space from the driver */
           sc->sc_conf_read = bwi_cardbus_conf_read;
           sc->sc_conf_write = bwi_cardbus_conf_write;
   
           reg = (sc->sc_conf_read)(sc, PCI_SUBSYS_ID_REG);
   
           sc->sc_pci_revid = PCI_REVISION(ca->ca_class);
           sc->sc_pci_did = PCI_PRODUCT(ca->ca_id);
           sc->sc_pci_subvid = PCI_VENDOR(reg);
           sc->sc_pci_subdid = PCI_PRODUCT(reg);
   
           error = bwi_attach(sc);
           if (error != 0)
                   bwi_cardbus_detach(&sc->sc_dev, 0);
   
           Cardbus_function_disable(ct);
   }
   
   int
   bwi_cardbus_detach(struct device *self, int flags)
   {
           struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)self;
           struct bwi_softc *sc = &csc->csc_bwi;
           cardbus_devfunc_t ct = csc->csc_ct;
           cardbus_chipset_tag_t cc = ct->ct_cc;
           cardbus_function_tag_t cf = ct->ct_cf;
           int error;
   
           error = bwi_detach(sc);
           if (error != 0)
                   return (error);
   
           /* unhook the interrupt handler */
           if (csc->csc_ih != NULL) {
                   cardbus_intr_disestablish(cc, cf, csc->csc_ih);
                   csc->csc_ih = NULL;
           }
   
           /* release bus space and close window */
           Cardbus_mapreg_unmap(ct, CARDBUS_BASE0_REG, sc->sc_mem_bt,
               sc->sc_mem_bh, csc->csc_mapsize);
   
           return (0);
   }
   
   void
   bwi_cardbus_setup(struct bwi_cardbus_softc *csc)
   {
           cardbus_devfunc_t ct = csc->csc_ct;
           cardbus_chipset_tag_t cc = ct->ct_cc;
           pci_chipset_tag_t pc = csc->csc_pc;
           cardbus_function_tag_t cf = ct->ct_cf;
           pcireg_t reg;
   
           /* program the BAR */
           pci_conf_write(pc, csc->csc_tag, CARDBUS_BASE0_REG,
               csc->csc_bar_val);
   
           /* make sure the right access type is on the cardbus bridge */
           (*cf->cardbus_ctrl)(cc, CARDBUS_MEM_ENABLE);
           (*cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
   
           /* enable the appropriate bits in the PCI CSR */
           reg = pci_conf_read(pc, csc->csc_tag,
               PCI_COMMAND_STATUS_REG);
           reg |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE;
           pci_conf_write(pc, csc->csc_tag, PCI_COMMAND_STATUS_REG,
               reg);
   }
   
   int
   bwi_cardbus_enable(struct bwi_softc *sc)
   {
           struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc;
           cardbus_devfunc_t ct = csc->csc_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);
   
           /* setup the PCI configuration registers */
           bwi_cardbus_setup(csc);
   
           /* map and establish the interrupt handler */
           csc->csc_ih = cardbus_intr_establish(cc, cf, csc->csc_intrline, IPL_NET,
               bwi_intr, sc, sc->sc_dev.dv_xname);
           if (csc->csc_ih == NULL) {
                   printf("%s: could not establish interrupt at %d\n",
                       sc->sc_dev.dv_xname, csc->csc_intrline);
                   Cardbus_function_disable(ct);
                   return (1);
           }
   
           return (0);
   }
   
   void
   bwi_cardbus_disable(struct bwi_softc *sc)
   {
           struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc;
           cardbus_devfunc_t ct = csc->csc_ct;
           cardbus_chipset_tag_t cc = ct->ct_cc;
           cardbus_function_tag_t cf = ct->ct_cf;
   
           /* unhook the interrupt handler */
           cardbus_intr_disestablish(cc, cf, csc->csc_ih);
           csc->csc_ih = NULL;
   
           /* power down the socket */
           Cardbus_function_disable(ct);
   }
   
   void
   bwi_cardbus_conf_write(void *self, uint32_t reg, uint32_t val)
   {
           struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)self;
           pci_chipset_tag_t pc = csc->csc_pc;
   
           pci_conf_write(pc, csc->csc_tag, reg, val);
   }
   
   uint32_t
   bwi_cardbus_conf_read(void *self, uint32_t reg)
   {
           struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)self;
           pci_chipset_tag_t pc = csc->csc_pc;
   
           return (pci_conf_read(pc, csc->csc_tag, reg));
   }

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