The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/isa/if_tribm_isa.c

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    1 /*      $NetBSD: if_tribm_isa.c,v 1.4 2002/01/07 21:47:09 thorpej Exp $ */
    2 
    3 /* XXXJRT changes isa_attach_args too early */
    4 
    5 /*
    6  * Copyright (c) 1999 The NetBSD Foundation, Inc.
    7  * All rights reserved.
    8  *
    9  * This code is derived from software contributed to The NetBSD Foundation
   10  * by Onno van der Linden.
   11  *
   12  * Redistribution and use in source and binary forms, with or without
   13  * modification, are permitted provided that the following conditions
   14  * are met:
   15  * 1. Redistributions of source code must retain the above copyright
   16  *    notice, this list of conditions and the following disclaimer.
   17  * 2. Redistributions in binary form must reproduce the above copyright
   18  *    notice, this list of conditions and the following disclaimer in the
   19  *    documentation and/or other materials provided with the distribution.
   20  * 3. All advertising materials mentioning features or use of this software
   21  *    must display the following acknowledgement:
   22  *        This product includes software developed by The NetBSD
   23  *        Foundation, Inc. and its contributors.
   24  * 4. Neither the name of The NetBSD Foundation nor the names of its 
   25  *    contributors may be used to endorse or promote products derived
   26  *    from this software without specific prior written permission.
   27  *
   28  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   29  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   30  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   31  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   32  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   33  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   34  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   35  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   36  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   37  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   38  * POSSIBILITY OF SUCH DAMAGE.
   39  */
   40 
   41 #include <sys/cdefs.h>
   42 __KERNEL_RCSID(0, "$NetBSD: if_tribm_isa.c,v 1.4 2002/01/07 21:47:09 thorpej Exp $");
   43 
   44 #include <sys/param.h>
   45 #include <sys/systm.h>
   46 #include <sys/socket.h>
   47 #include <sys/device.h>
   48 
   49 #include <net/if.h>
   50 #include <net/if_ether.h>
   51 #include <net/if_media.h>
   52 
   53 #include <machine/bus.h>
   54 
   55 #include <dev/isa/isavar.h>
   56 
   57 #include <dev/ic/tropicreg.h>
   58 #include <dev/ic/tropicvar.h>
   59 
   60 int     tribm_isa_probe __P((struct device *, struct cfdata *, void *));
   61 int     tr_isa_map_io __P((struct isa_attach_args *, bus_space_handle_t *,
   62             bus_space_handle_t *));
   63 void    tr_isa_unmap_io __P((struct isa_attach_args *, bus_space_handle_t,
   64             bus_space_handle_t));
   65 
   66 int
   67 tribm_isa_probe(parent, match, aux)
   68         struct device   *parent;
   69         struct cfdata   *match;
   70         void    *aux;
   71 {
   72         struct isa_attach_args *ia = aux;
   73         static int irq_f[4] = { 9, 3, 6, 7 };
   74         static int irq_e[4] = { 9, 3, 10, 11 };
   75         bus_space_tag_t piot = ia->ia_iot;
   76         bus_space_tag_t memt = ia->ia_memt;
   77         bus_space_handle_t pioh, mmioh;
   78         int i, irq;
   79         u_int8_t s;
   80 
   81         if (ia->ia_nio < 1)
   82                 return (0);
   83         if (ia->ia_niomem < 1)
   84                 return (0);
   85         if (ia->ia_nirq < 1)
   86                 return (0);
   87 
   88         if (ISA_DIRECT_CONFIG(ia))
   89                 return (0);
   90 
   91 #ifdef notyet
   92 /* XXX Try both 0xa20 and 0xa24 and store that info like 3com */
   93         if (ia->ia_iobase == IOBASEUNK)
   94                 ia->ia_iobase = 0xa20;
   95 #else
   96         if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT)
   97                 return (0);
   98 #endif
   99 
  100         /*
  101          * XXXJRT Should not modify attach_args unless we know we match!
  102          */
  103 
  104         ia->ia_io[0].ir_size = 4;
  105         ia->ia_aux = NULL;
  106 
  107         if (tr_isa_map_io(ia, &pioh, &mmioh))
  108                 return 0;
  109 
  110 /*
  111  * F = Token-Ring Network PC Adapter
  112  *     Token-Ring Network PC Adapter II
  113  *     Token-Ring Network Adapter/A
  114  * E = Token-Ring Network 16/4 Adapter/A (long card)
  115  *     Token-Ring Network 16/4 Adapter
  116  * D = Token-Ring Network 16/4 Adapter/A (short card)
  117  *     16/4 ISA-16 Adapter
  118  * C = Auto 16/4 Token-Ring ISA Adapter
  119  *     Auto 16/4 Token-Ring MC Adapter
  120  */
  121 /*
  122  * XXX Both 0xD and 0xC types should be able to use 16-bit read and writes
  123  */
  124         switch (bus_space_read_1(memt, mmioh, TR_TYP_OFFSET)) {
  125         case 0xF:
  126         case 0xE:
  127         case 0xD:
  128                 if (ia->ia_iomem[0].ir_addr == ISACF_IOMEM_DEFAULT)
  129 #ifdef notyet
  130                         ia->ia_maddr = TR_SRAM_DEFAULT;
  131 #else
  132                         return 0;
  133 #endif
  134                 break;
  135         case 0xC:
  136                 i = bus_space_read_1(memt, mmioh, TR_ACA_OFFSET) << 12;
  137                 if (ia->ia_iomem[0].ir_addr == ISACF_IOMEM_DEFAULT)
  138                         ia->ia_iomem[0].ir_addr = i;
  139                 else if (ia->ia_iomem[0].ir_addr != i) {
  140                         printf(
  141 "tribm_isa_probe: sram mismatch; kernel configured %x != board configured %x\n",
  142                                 ia->ia_iomem[0].ir_addr, i);
  143                         tr_isa_unmap_io(ia, pioh, mmioh);
  144                         return 0;
  145                 }
  146                 break;
  147         default:
  148                 printf("tribm_isa_probe: unknown type code %x\n",
  149                     bus_space_read_1(memt, mmioh, TR_TYP_OFFSET));
  150                 tr_isa_unmap_io(ia, pioh, mmioh);
  151                 return 0;
  152         }
  153 
  154         s = bus_space_read_1(piot, pioh, TR_SWITCH);
  155 
  156         switch (bus_space_read_1(memt, mmioh, TR_IRQ_OFFSET)) {
  157         case 0xF:
  158                 irq = irq_f[s & 3];
  159                 break;
  160         case 0xE:
  161                 irq = irq_e[s & 3];
  162                 break;
  163         default:
  164                 printf("tribm_isa_probe: Unknown IRQ code %x\n",
  165                     bus_space_read_1(memt, mmioh, TR_IRQ_OFFSET));
  166                 tr_isa_unmap_io(ia, pioh, mmioh);
  167                 return 0;
  168         }
  169 
  170         if (ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT)
  171                 ia->ia_irq[0].ir_irq = irq;
  172         else if (ia->ia_irq[0].ir_irq != irq) {
  173                 printf(
  174 "tribm_isa_probe: irq mismatch; kernel configured %d != board configured %d\n",
  175                         ia->ia_irq[0].ir_irq, irq);
  176                 tr_isa_unmap_io(ia, pioh, mmioh);
  177                 return 0;
  178         }
  179 /*
  180  * XXX 0x0c == MSIZEMASK (MSIZEBITS)
  181  */
  182         ia->ia_iomem[0].ir_size = 8192 <<
  183             ((bus_space_read_1(memt, mmioh, TR_ACA_OFFSET + 1) & 0x0c) >> 2);
  184         tr_isa_unmap_io(ia, pioh, mmioh);
  185         /* Check alignment of membase. */
  186         if ((ia->ia_iomem[0].ir_addr & (ia->ia_iomem[0].ir_size-1)) != 0) {
  187                 printf("tribm_isa_probe: SRAM unaligned 0x%04x/%d\n",
  188                     ia->ia_iomem[0].ir_addr, ia->ia_iomem[0].ir_size);
  189                 return 0;
  190         }
  191 
  192         ia->ia_nio = 1;
  193         ia->ia_niomem = 1;
  194         ia->ia_nirq = 1;
  195 
  196         ia->ia_ndrq = 0;
  197 
  198         return 1;
  199 }

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