if_ed_sic.c

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    1 /*-
    2  * Copyright (c) 2005, M. Warner Losh
    3  * All rights reserved.
    4  * Copyright (c) 1995, David Greenman 
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice unmodified, this list of conditions, and the following
   12  *    disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD: releng/8.3/sys/dev/ed/if_ed_sic.c 154924 2006-01-27 19:10:13Z imp $");
   32 
   33 #include "opt_ed.h"
   34 
   35 #ifdef ED_SIC
   36 #include <sys/param.h>
   37 #include <sys/systm.h>
   38 #include <sys/sockio.h>
   39 #include <sys/mbuf.h>
   40 #include <sys/kernel.h>
   41 #include <sys/socket.h>
   42 #include <sys/syslog.h>
   43 
   44 #include <sys/bus.h>
   45 
   46 #include <machine/bus.h>
   47 #include <sys/rman.h>
   48 #include <machine/resource.h>
   49 
   50 #include <net/ethernet.h>
   51 #include <net/if.h>
   52 #include <net/if_arp.h>
   53 #include <net/if_dl.h>
   54 #include <net/if_mib.h>
   55 #include <net/if_media.h>
   56 
   57 #include <net/bpf.h>
   58 
   59 #include <dev/ed/if_edreg.h>
   60 #include <dev/ed/if_edvar.h>
   61 
   62 /*
   63  * Probe and vendor-specific initialization routine for SIC boards
   64  */
   65 int
   66 ed_probe_SIC(device_t dev, int port_rid, int flags)
   67 {
   68         struct ed_softc *sc = device_get_softc(dev);
   69         int     error;
   70         int     i;
   71         u_int   memsize;
   72         u_long  pmem;
   73         u_char  sum;
   74 
   75         error = ed_alloc_port(dev, 0, ED_SIC_IO_PORTS);
   76         if (error)
   77                 return (error);
   78 
   79         sc->asic_offset = ED_SIC_ASIC_OFFSET;
   80         sc->nic_offset  = ED_SIC_NIC_OFFSET;
   81 
   82         memsize = 16384;
   83         /* XXX Needs to allow different msize */
   84         error = ed_alloc_memory(dev, 0, memsize);
   85         if (error)
   86                 return (error);
   87 
   88         sc->mem_start = 0;
   89         sc->mem_size  = memsize;
   90 
   91         pmem = rman_get_start(sc->mem_res);
   92         error = ed_isa_mem_ok(dev, pmem, memsize);
   93         if (error)
   94                 return (error);
   95 
   96         /* Reset card to force it into a known state. */
   97         ed_asic_outb(sc, 0, 0x00);
   98         DELAY(100);
   99 
  100         /*
  101          * Here we check the card ROM, if the checksum passes, and the
  102          * type code and ethernet address check out, then we know we have
  103          * an SIC card.
  104          */
  105         ed_asic_outb(sc, 0, 0x81);
  106         DELAY(100);
  107 
  108         sum = bus_space_read_1(sc->mem_bst, sc->mem_bsh, 6);
  109         for (i = 0; i < ETHER_ADDR_LEN; i++)
  110                 sum ^= (sc->enaddr[i] =
  111                     bus_space_read_1(sc->mem_bst, sc->mem_bsh, i));
  112 #ifdef ED_DEBUG
  113         device_printf(dev, "ed_probe_sic: got address %6D\n",
  114             sc->enaddr, ":");
  115 #endif
  116         if (sum != 0)
  117                 return (ENXIO);
  118         if ((sc->enaddr[0] | sc->enaddr[1] | sc->enaddr[2]) == 0)
  119                 return (ENXIO);
  120 
  121         sc->vendor   = ED_VENDOR_SIC;
  122         sc->type_str = "SIC";
  123         sc->isa16bit = 0;
  124         sc->cr_proto = 0;
  125 
  126         /*
  127          * SIC RAM page 0x0000-0x3fff(or 0x7fff)
  128          */
  129         ed_asic_outb(sc, 0, 0x80);
  130         DELAY(100);
  131 
  132         error = ed_clear_memory(dev);
  133         if (error)
  134                 return (error);
  135 
  136         sc->mem_shared = 1;
  137         sc->mem_end = sc->mem_start + sc->mem_size;
  138 
  139         /*
  140          * allocate one xmit buffer if < 16k, two buffers otherwise
  141          */
  142         if ((sc->mem_size < 16384) || (flags & ED_FLAGS_NO_MULTI_BUFFERING))
  143                 sc->txb_cnt = 1;
  144         else
  145                 sc->txb_cnt = 2;
  146         sc->tx_page_start = 0;
  147 
  148         sc->rec_page_start = sc->tx_page_start + ED_TXBUF_SIZE * sc->txb_cnt;
  149         sc->rec_page_stop = sc->tx_page_start + sc->mem_size / ED_PAGE_SIZE;
  150 
  151         sc->mem_ring = sc->mem_start + sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE;
  152 
  153         sc->sc_write_mbufs = ed_shmem_write_mbufs;
  154         return (0);
  155 }
  156 
  157 #endif /* ED_SIC */

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FreeBSD/Linux Kernel Cross Reference sys/dev/ed/if_ed_sic.c

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sys/dev/ed/if_ed_sic.c