Line data    Source code

       1             : /*      $OpenBSD: if_pgt_pci.c,v 1.18 2015/12/11 16:07:02 mpi Exp $  */
       2             : 
       3             : /*
       4             :  * Copyright (c) 2006 Marcus Glocker <mglocker@openbsd.org>
       5             :  *
       6             :  * Permission to use, copy, modify, and distribute this software for any
       7             :  * purpose with or without fee is hereby granted, provided that the above
       8             :  * copyright notice and this permission notice appear in all copies.
       9             :  *
      10             :  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
      11             :  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
      12             :  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
      13             :  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
      14             :  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
      15             :  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
      16             :  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
      17             :  */
      18             : 
      19             : /*
      20             :  * PCI front-end for the PrismGT
      21             :  */
      22             : 
      23             : #include "bpfilter.h"
      24             : 
      25             : #include <sys/param.h>
      26             : #include <sys/sockio.h>
      27             : #include <sys/mbuf.h>
      28             : #include <sys/kernel.h>
      29             : #include <sys/socket.h>
      30             : #include <sys/systm.h>
      31             : #include <sys/malloc.h>
      32             : #include <sys/timeout.h>
      33             : #include <sys/device.h>
      34             : 
      35             : #include <machine/bus.h>
      36             : 
      37             : #include <net/if.h>
      38             : #include <net/if_media.h>
      39             : 
      40             : #include <netinet/in.h>
      41             : #include <netinet/if_ether.h>
      42             : 
      43             : #include <net80211/ieee80211_var.h>
      44             : #include <net80211/ieee80211_radiotap.h>
      45             : 
      46             : #include <dev/ic/pgtreg.h>
      47             : #include <dev/ic/pgtvar.h>
      48             : 
      49             : #include <dev/pci/pcireg.h>
      50             : #include <dev/pci/pcivar.h>
      51             : #include <dev/pci/pcidevs.h>
      52             : 
      53             : /* Base Address Register */
      54             : #define PGT_PCI_BAR0    0x10
      55             : 
      56             : int     pgt_pci_match(struct device *, void *, void *);
      57             : void    pgt_pci_attach(struct device *, struct device *, void *);
      58             : int     pgt_pci_detach(struct device *, int);
      59             : 
      60             : struct pgt_pci_softc {
      61             :         struct pgt_softc        sc_pgt;
      62             : 
      63             :         pci_chipset_tag_t       sc_pc;
      64             :         void                    *sc_ih;
      65             :         bus_size_t              sc_mapsize;
      66             : };
      67             : 
      68             : struct cfattach pgt_pci_ca = {
      69             :         sizeof(struct pgt_pci_softc), pgt_pci_match, pgt_pci_attach,
      70             :         pgt_pci_detach, pgt_activate
      71             : };
      72             : 
      73             : const struct pci_matchid pgt_pci_devices[] = {
      74             :         { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_ISL3877 },
      75             :         { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_ISL3890 },
      76             :         { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRWE154G72 }
      77             : };
      78             : 
      79             : int
      80           0 : pgt_pci_match(struct device *parent, void *match, void *aux)
      81             : {
      82           0 :         return (pci_matchbyid((struct pci_attach_args *)aux, pgt_pci_devices,
      83             :             sizeof(pgt_pci_devices) / sizeof(pgt_pci_devices[0])));
      84             : }
      85             : 
      86             : void
      87           0 : pgt_pci_attach(struct device *parent, struct device *self, void *aux)
      88             : {
      89           0 :         struct pgt_pci_softc *psc = (struct pgt_pci_softc *)self;
      90           0 :         struct pgt_softc *sc = &psc->sc_pgt;
      91           0 :         struct pci_attach_args *pa = aux;
      92             :         const char *intrstr = NULL;
      93           0 :         pci_intr_handle_t ih;
      94             :         int error;
      95             : 
      96           0 :         sc->sc_dmat = pa->pa_dmat;
      97           0 :         psc->sc_pc = pa->pa_pc;
      98             : 
      99             :         /* remember chipset */
     100           0 :         if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTERSIL_ISL3877)
     101           0 :                 sc->sc_flags |= SC_ISL3877;
     102             : 
     103             :         /* map control / status registers */
     104           0 :         error = pci_mapreg_map(pa, PGT_PCI_BAR0,
     105             :             PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
     106           0 :             &sc->sc_iotag, &sc->sc_iohandle, NULL, &psc->sc_mapsize, 0);
     107           0 :         if (error != 0) {
     108           0 :                 printf(": can't map mem space\n");
     109           0 :                 return;
     110             :         }
     111             : 
     112             :         /* map interrupt */
     113           0 :         if (pci_intr_map(pa, &ih) != 0) {
     114           0 :                 printf(": can't map interrupt\n");
     115           0 :                 return;
     116             :         }
     117             : 
     118             :         /* disable all interrupts */
     119           0 :         bus_space_write_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN, 0);
     120           0 :         (void)bus_space_read_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN);
     121           0 :         DELAY(PGT_WRITEIO_DELAY);
     122             : 
     123             :         /* establish interrupt */
     124           0 :         intrstr = pci_intr_string(psc->sc_pc, ih);
     125           0 :         psc->sc_ih = pci_intr_establish(psc->sc_pc, ih, IPL_NET, pgt_intr, sc,
     126           0 :             sc->sc_dev.dv_xname);
     127           0 :         if (psc->sc_ih == NULL) {
     128           0 :                 printf(": can't establish interrupt");
     129           0 :                 if (intrstr != NULL)
     130           0 :                         printf(" at %s", intrstr);
     131           0 :                 printf("\n");
     132           0 :                 return;
     133             :         }
     134           0 :         printf(": %s\n", intrstr);
     135             : 
     136           0 :         config_mountroot(self, pgt_attach);
     137           0 : }
     138             : 
     139             : int
     140           0 : pgt_pci_detach(struct device *self, int flags)
     141             : {
     142           0 :         struct pgt_pci_softc *psc = (struct pgt_pci_softc *)self;
     143           0 :         struct pgt_softc *sc = &psc->sc_pgt;
     144             : 
     145           0 :         if (psc->sc_ih != NULL) {
     146           0 :                 pgt_detach(sc);
     147           0 :                 pci_intr_disestablish(psc->sc_pc, psc->sc_ih);
     148           0 :         }
     149           0 :         if (psc->sc_mapsize > 0)
     150           0 :                 bus_space_unmap(sc->sc_iotag, sc->sc_iohandle,
     151             :                     psc->sc_mapsize);
     152             : 
     153           0 :         return (0);
     154             : }