if_lnc_isa.c

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    1 /*-
    2  * Copyright (c) 1994-2000
    3  *      Paul Richards. All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer,
   10  *    verbatim and that no modifications are made prior to this
   11  *    point in the file.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. The name Paul Richards may not be used to endorse or promote products
   16  *    derived from this software without specific prior written permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL PAUL RICHARDS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  *
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __FBSDID("$FreeBSD$");
   34 
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/bus.h>
   38 #include <sys/kernel.h>
   39 #include <sys/malloc.h>
   40 #include <sys/module.h>
   41 #include <sys/socket.h>
   42 
   43 #include <machine/bus.h>
   44 #include <machine/resource.h>
   45 #include <sys/rman.h>
   46 
   47 #include <net/ethernet.h>
   48 #include <net/if.h>
   49 #include <net/if_arp.h>
   50 
   51 #include <isa/isavar.h>
   52 
   53 #include <dev/lnc/if_lncvar.h>
   54 #include <dev/lnc/if_lncreg.h>
   55 
   56 static struct isa_pnp_id lnc_pnp_ids[] = {
   57         {0,     NULL}
   58 };
   59 
   60 static int
   61 lnc_legacy_probe(device_t dev)
   62 {
   63         struct lnc_softc *sc = device_get_softc(dev);
   64 
   65         sc->portrid = 0;
   66         sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &sc->portrid,
   67                                              RF_ACTIVE);
   68 
   69         if (! sc->portres) {
   70                 device_printf(dev, "Failed to allocate I/O ports\n");
   71                 lnc_release_resources(dev);
   72                 return (ENXIO);
   73         }
   74 
   75         sc->lnc_btag = rman_get_bustag(sc->portres);
   76         sc->lnc_bhandle = rman_get_bushandle(sc->portres);
   77 
   78         /*
   79          * There isn't any way to determine if a NIC is a BICC. Basically, if
   80          * the lance probe succeeds using the i/o addresses of the BICC then
   81          * we assume it's a BICC.
   82          *
   83          */
   84         sc->rap = BICC_RAP;
   85         sc->rdp = BICC_RDP;
   86         sc->nic.mem_mode = DMA_FIXED;
   87         /* XXX Should set BICC_IOSIZE et al somewhere to alloc
   88            resources correctly */
   89 
   90         if ((sc->nic.ic = lance_probe(sc))) {
   91                 device_set_desc(dev, "BICC Isolan");
   92                 sc->nic.ident = BICC;
   93                 lnc_release_resources(dev);
   94                 return (0);
   95         } else {
   96             /* It's not a BICC so try the standard NE2100 ports */
   97             sc->rap = PCNET_RAP;
   98             sc->rdp = PCNET_RDP;
   99             if ((sc->nic.ic = lance_probe(sc))) {
  100                 sc->nic.ident = NE2100;
  101                 device_set_desc(dev, "NE2100");
  102                 lnc_release_resources(dev);
  103                 return (0);
  104             } else {
  105                 lnc_release_resources(dev);
  106                 return (ENXIO);
  107             }
  108         }
  109 }
  110 
  111 static int
  112 lnc_isa_probe(device_t dev)
  113 {
  114         int pnp;
  115 
  116         pnp = ISA_PNP_PROBE(device_get_parent(dev), dev, lnc_pnp_ids);
  117         if (pnp == ENOENT) {
  118                 /* It's not a PNP card, see if we support it by probing it */
  119                 return (lnc_legacy_probe(dev));
  120         } else if (pnp == ENXIO) {
  121                 return (ENXIO);
  122         } else {
  123                 /* Found PNP card we support */
  124                 return (0);
  125         }
  126 }
  127 
  128 static void
  129 lnc_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error)
  130 {
  131         /* Do nothing */
  132         return;
  133 }
  134 
  135 static int
  136 lnc_isa_attach(device_t dev)
  137 {
  138         lnc_softc_t *sc = device_get_softc(dev);
  139         int err = 0;
  140         bus_size_t lnc_mem_size;
  141 
  142         device_printf(dev, "Attaching %s\n", device_get_desc(dev));
  143 
  144         sc->portrid = 0;
  145         sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &sc->portrid,
  146                                              RF_ACTIVE);
  147 
  148         if (! sc->portres) {
  149                 device_printf(dev, "Failed to allocate I/O ports\n");
  150                 lnc_release_resources(dev);
  151                 return (ENXIO);
  152         }
  153 
  154         sc->drqrid = 0;
  155         sc->drqres = bus_alloc_resource_any(dev, SYS_RES_DRQ, &sc->drqrid,
  156                                             RF_ACTIVE);
  157 
  158         if (! sc->drqres) {
  159                 device_printf(dev, "Failed to allocate DMA channel\n");
  160                 lnc_release_resources(dev);
  161                 return (ENXIO);
  162         }
  163 
  164         if (isa_get_irq(dev) == -1)
  165                 bus_set_resource(dev, SYS_RES_IRQ, 0, 10, 1);
  166 
  167         sc->irqrid = 0;
  168         sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqrid,
  169                                             RF_ACTIVE);
  170 
  171         if (! sc->irqres) {
  172                 device_printf(dev, "Failed to allocate irq\n");
  173                 lnc_release_resources(dev);
  174                 return (ENXIO);
  175         }
  176 
  177         err = bus_setup_intr(dev, sc->irqres, INTR_TYPE_NET, lncintr,
  178                              sc, &sc->intrhand);
  179 
  180         if (err) {
  181                 device_printf(dev, "Failed to setup irq handler\n");
  182                 lnc_release_resources(dev);
  183                 return (err);
  184         }
  185 
  186         /* XXX temp setting for nic */
  187         sc->nic.mem_mode = DMA_FIXED;
  188         sc->nrdre  = NRDRE;
  189         sc->ntdre  = NTDRE;
  190 
  191         if (sc->nic.ident == NE2100) {
  192             sc->rap = PCNET_RAP;
  193             sc->rdp = PCNET_RDP;
  194             sc->bdp = PCNET_BDP;
  195         } else {
  196             sc->rap = BICC_RAP;
  197             sc->rdp = BICC_RDP;
  198         }
  199 
  200         /* Create a DMA tag describing the ring memory we need */
  201 
  202         lnc_mem_size = ((NDESC(sc->nrdre) + NDESC(sc->ntdre)) *
  203                          sizeof(struct host_ring_entry));
  204 
  205         lnc_mem_size += (NDESC(sc->nrdre) * RECVBUFSIZE) +
  206                         (NDESC(sc->ntdre) * TRANSBUFSIZE);
  207 
  208         err = bus_dma_tag_create(NULL,                  /* parent */
  209                                  4,                     /* alignement */
  210                                  0,                     /* boundary */
  211                                  BUS_SPACE_MAXADDR_24BIT,       /* lowaddr */
  212                                  BUS_SPACE_MAXADDR,     /* highaddr */
  213                                  NULL, NULL,            /* filter, filterarg */
  214                                  lnc_mem_size,          /* segsize */
  215                                  1,                     /* nsegments */
  216                                  BUS_SPACE_MAXSIZE_32BIT,       /* maxsegsize */
  217                                  0,                     /* flags */
  218                                  busdma_lock_mutex,     /* lockfunc */
  219                                  &Giant,                /* lockarg */
  220                                  &sc->dmat);
  221 
  222         if (err) {
  223                 device_printf(dev, "Can't create DMA tag\n");
  224                 lnc_release_resources(dev);
  225                 return (ENOMEM);
  226         }
  227 
  228         err = bus_dmamem_alloc(sc->dmat, (void **)&sc->recv_ring,
  229                                BUS_DMA_NOWAIT, &sc->dmamap);
  230 
  231         if (err) {
  232                 device_printf(dev, "Couldn't allocate memory\n");
  233                 lnc_release_resources(dev);
  234                 return (ENOMEM);
  235         }
  236 
  237         err = bus_dmamap_load(sc->dmat, sc->dmamap, sc->recv_ring, lnc_mem_size,
  238                         lnc_alloc_callback, sc->recv_ring, BUS_DMA_NOWAIT);
  239 
  240         if (err) {
  241                 device_printf(dev, "Couldn't load DMA map\n");
  242                 lnc_release_resources(dev);
  243                 return (ENOMEM);
  244         }
  245 
  246         isa_dmacascade(rman_get_start(sc->drqres));
  247 
  248         /* Call generic attach code */
  249         if (! lnc_attach_common(dev)) {
  250                 device_printf(dev, "Generic attach code failed\n");
  251                 lnc_release_resources(dev);
  252                 return (ENXIO);
  253         }
  254         return (0);
  255 }
  256 
  257 static int
  258 lnc_isa_detach(device_t dev)
  259 {
  260         lnc_softc_t *sc = device_get_softc(dev);
  261         int s = splimp();
  262 
  263         ether_ifdetach(&sc->arpcom.ac_if);
  264         splx(s);
  265 
  266         lnc_stop(sc);
  267         lnc_release_resources(dev);
  268 
  269         return (0);
  270 }
  271 
  272 static device_method_t lnc_isa_methods[] = {
  273 /*      DEVMETHOD(device_identify,      lnc_isa_identify), */
  274         DEVMETHOD(device_probe,         lnc_isa_probe),
  275         DEVMETHOD(device_attach,        lnc_isa_attach),
  276         DEVMETHOD(device_detach,        lnc_isa_detach),
  277 #ifdef notyet
  278         DEVMETHOD(device_suspend,       lnc_isa_suspend),
  279         DEVMETHOD(device_resume,        lnc_isa_resume),
  280         DEVMETHOD(device_shutdown,      lnc_isa_shutdown),
  281 #endif
  282         { 0, 0 }
  283 };
  284 
  285 static driver_t lnc_isa_driver = {
  286         "lnc",
  287         lnc_isa_methods,
  288         sizeof(struct lnc_softc),
  289 };
  290 
  291 DRIVER_MODULE(lnc, isa, lnc_isa_driver, lnc_devclass, 0, 0);
  292 MODULE_DEPEND(lnc, isa, 1, 1, 1);
  293 MODULE_DEPEND(lnc, ether, 1, 1, 1);
Cache object: c4df5cff81153cd1dfd6508593ae3be8
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FreeBSD/Linux Kernel Cross Reference sys/dev/lnc/if_lnc_isa.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/lnc/if_lnc_isa.c
